MAX6314US35D1-T中文资料

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MAX13085EESA-T中文资料

General DescriptionThe MAX13080E–MAX13089E +5.0V, ±15kV ESD-protect-ed, RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry,guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic-high if all transmitters on a terminated bus are disabled (high impedance). The MAX13080E–MAX13089E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.The MAX13080E/MAX13081E/MAX13082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX13083E/MAX13084E/MAX13085E also feature slew-rate-limited drivers but allow transmit speeds up to 500kbps. The MAX13086E/MAX13087E/MAX13088E driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX13089E slew rate is pin selectable for 250kbps,500kbps, and 16Mbps.The MAX13082E/MAX13085E/MAX13088E are intended for half-duplex communications, and the MAX13080E/MAX13081E/MAX13083E/MAX13084E/MAX13086E/MAX13087E are intended for full-duplex communica-tions. The MAX13089E is selectable for half-duplex or full-duplex operation. It also features independently programmable receiver and transmitter output phase through separate pins.The MAX13080E–MAX13089E transceivers draw 1.2mA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256transceivers on the bus.The MAX13080E/MAX13083E/MAX13086E/MAX13089E are available in 14-pin PDIP and 14-pin SO packages.The MAX13081E/MAX13082E/MAX13084E/MAX13085E/MAX13087E/MAX13088E are available in 8-pin PDIP and 8-pin SO packages. The devices operate over the com-mercial, extended, and automotive temperature ranges.ApplicationsUtility Meters Lighting Systems Industrial Control Telecom Security Systems Instrumentation ProfibusFeatures♦+5.0V Operation♦Extended ESD Protection for RS-485/RS-422 I/O Pins±15kV Human Body Model ♦True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility ♦Hot-Swap Input Structures on DE and RE ♦Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission(MAX13080E–MAX13085E/MAX13089E)♦Low-Current Shutdown Mode (Except MAX13081E/MAX13084E/MAX13087E)♦Pin-Selectable Full-/Half-Duplex Operation (MAX13089E)♦Phase Controls to Correct for Twisted-Pair Reversal (MAX13089E)♦Allow Up to 256 Transceivers on the Bus ♦Available in Industry-Standard 8-Pin SO PackageMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers________________________________________________________________Maxim Integrated Products 1Ordering Information19-3590; Rev 1; 4/05For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Selector Guide, Pin Configurations, and Typical Operating Circuits appear at end of data sheet.Ordering Information continued at end of data sheet.M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(All Voltages Referenced to GND)Supply Voltage (V CC ).............................................................+6V Control Input Voltage (RE , DE, SLR,H/F , TXP, RXP)......................................................-0.3V to +6V Driver Input Voltage (DI)...........................................-0.3V to +6V Driver Output Voltage (Z, Y, A, B).............................-8V to +13V Receiver Input Voltage (A, B)....................................-8V to +13V Receiver Input VoltageFull Duplex (A, B)..................................................-8V to +13V Receiver Output Voltage (RO)....................-0.3V to (V CC + 0.3V)Driver Output Current.....................................................±250mAContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C).....727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 14-Pin Plastic DIP (derate 10.0mW/°C above +70°C)...800mW Operating Temperature RangesMAX1308_EC_ _.................................................0°C to +75°C MAX1308_EE_ _..............................................-40°C to +85°C MAX1308_EA_ _............................................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS (continued)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.) (Note 1)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 4_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX13080E/MAX13081E/MAX13082E/MAX13089E WITH SRL = UNCONNECTED (250kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICSMAX13080E/MAX13081E/MAX13082E/MAX13089E WITH SRL = UNCONNECTED (250kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________5DRIVER SWITCHING CHARACTERISTICSMAX13083E/MAX13084E/MAX13085E/MAX13089E WITH SRL = V CC (500kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICSMAX13083E/MAX13084E/MAX13085E/MAX13089E WITH SRL = V CC (500kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 6_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX13086E/MAX13087E/MAX13088E/MAX13089E WITH SRL = GND (16Mbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICSMAX13086E/MAX13087E/MAX13088E/MAX13089E WITH SRL = GND (16Mbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)Note 2:∆V OD and ∆V OC are the changes in V OD and V OC , respectively, when the DI input changes state.Note 3:The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback outputcurrent applies during current limiting to allow a recovery from bus contention.MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________70.800.901.501.101.001.201.301.401.60-40-10520-253550958011065125SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )0201040305060021345OUTPUT CURRENTvs. RECEIVER OUTPUT-HIGH VOLTAGEM A X 13080E -89E t o c 02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )20104030605070021345OUTPUT CURRENTvs. RECEIVER OUTPUT-LOW VOLTAGEM A X 13080E -89E t o c 03OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )4.04.44.24.84.65.25.05.4RECEIVER OUTPUT-HIGH VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T H I G H V O L T A G E (V )-40-10520-2535509580110651250.10.70.30.20.40.50.60.8RECEIVER OUTPUT-LOW VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T L O W V O L T A G E (V )-40-10520-25355095801106512502040608010012014016012345DRIVER DIFFERENTIAL OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGEDIFFERENTIAL OUTPUT VOLTAGE (V)D I F FE R E N T I A L O U T P U T C U R R E N T (m A )2.02.82.43.63.24.44.04.8DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURED I F FE R E N T I A L O U T P U T V O L T A G E (V )-40-10520-253550958011065125TEMPERATURE (°C)40201008060120140180160200-7-5-4-6-3-2-1012354OUTPUT CURRENT vs. TRANSMITTEROUTPUT-HIGH VOLTAGEOUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )60402080100120140160180200042681012OUTPUT CURRENT vs. TRANSMITTEROUTPUT-LOW VOLTAGEOUTPUT-LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )Typical Operating Characteristics(V CC = +5.0V, T A = +25°C, unless otherwise noted.)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 8_______________________________________________________________________________________21543679810SHUTDOWN CURRENT vs. TEMPERATUREM A X 13080E -89E t o c 10S H U T D O W N C U R R E N T (µA )-40-10520-253550958011065125TEMPERATURE (°C)600800700100090011001200DRIVER PROPAGATION DELAY vs. TEMPERATURE (250kbps)D R I VE R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)300400350500450550600DRIVER PROPAGATION DELAY vs. TEMPERATURE (500kbps)D R I VE R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)1070302040506080DRIVER PROPAGATION DELAY vs. TEMPERATURE (16Mbps)D R I VE R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)40201008060120140160180RECEIVER PROPAGATION DELAYvs. TEMPERATURE (250kpbs AND 500kbps)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)40201008060120140160180RECEIVER PROPAGATION DELAYvs. TEMPERATURE (16Mbps)R EC E I V E R P R O P A G AT I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)2µs/div DRIVER PROPAGATION DELAY (250kbps)DI 2V/divV Y - V Z 5V/divR L = 100Ω200ns/divRECEIVER PROPAGATION DELAY(250kbps AND 500kbps)V A - V B 5V/divRO 2V/divTypical Operating Characteristics (continued)(V CC = +5.0V, T A = +25°C, unless otherwise noted.)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________9Test Circuits and Waveforms400ns/divDRIVER PROPAGATION DELAY (500kbps)DI 2V/divR L = 100ΩV Y - V Z 5V/div10ns/div DRIVER PROPAGATION DELAY (16Mbps)DI 2V/divR L = 100ΩV Y 2V/divV Z 2V/div40ns/divRECEIVER PROPAGATION DELAY (16Mbps)V B 2V/divR L = 100ΩRO 2V/divV A 2V/divTypical Operating Characteristics (continued)(V CC = +5.0V, T A = +25°C, unless otherwise noted.)Figure 2. Driver Timing Test CircuitM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 10______________________________________________________________________________________Test Circuits and Waveforms (continued)Figure 4. Driver Enable and Disable Times (t DHZ , t DZH , t DZH(SHDN))DZL DLZ DLZ(SHDN)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversTest Circuits and Waveforms (continued)Figure 6. Receiver Propagation Delay Test CircuitM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX13080E/MAX13083E/MAX13086EMAX13081E/MAX13084E/MAX13086E/MAX13087EFunction TablesM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers MAX13082E/MAX13085E/MAX13088EFunction Tables (continued)MAX13089EDetailed Description The MAX13080E–MAX13089E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuit-ry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all dri-vers disabled (see the Fail-Safe section). The MAX13080E/MAX13082E/MAX13083E/MAX13085E/ MAX13086E/MAX13088E/MAX13089E also feature a hot-swap capability allowing line insertion without erroneous data transfer (see the Hot Swap Capability section). The MAX13080E/MAX13081E/MAX13082E feature reduced slew-rate drivers that minimize EMI and reduce reflec-tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX13083E/MAX13084E/MAX13085E also offer slew-rate limits allowing transmit speeds up to 500kbps. The MAX13086E/MAX13087E/MAX13088Es’ driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX13089E’s slew rate is selectable between 250kbps, 500kbps, and 16Mbps by driving a selector pin with a three-state driver.The MAX13082E/MAX13085E/MAX13088E are half-duplex transceivers, while the MAX13080E/MAX13081E/ MAX13083E/MAX13084E/MAX13086E/MAX13087E are full-duplex transceivers. The MAX13089E is selectable between half- and full-duplex communication by driving a selector pin (H/F) high or low, respectively.All devices operate from a single +5.0V supply. Drivers are output short-circuit current limited. Thermal-shutdown circuitry protects drivers against excessive power dissi-pation. When activated, the thermal-shutdown circuitry places the driver outputs into a high-impedance state.Receiver Input Filtering The receivers of the MAX13080E–MAX13085E, and the MAX13089E when operating in 250kbps or 500kbps mode, incorporate input filtering in addition to input hysteresis. This filtering enhances noise immunity with differential signals that have very slow rise and fall times. Receiver propagation delay increases by 25% due to this filtering.Fail-Safe The MAX13080E family guarantees a logic-high receiver output when the receiver inputs are shorted or open, or when they are connected to a terminated transmission line with all drivers disabled. This is done by setting the receiver input threshold between -50mV and -200mV. If the differential receiver input voltage (A - B) is greater than or equal to -50mV, RO is logic-high. If (A - B) is less than or equal to -200mV, RO is logic-low. In the case of a terminated bus with all transmitters disabled, the receiv-er’s differential input voltage is pulled to 0V by the termi-nation. With the receiver thresholds of the MAX13080E family, this results in a logic-high with a 50mV minimumnoise margin. Unlike previous fail-safe devices, the-50mV to -200mV threshold complies with the ±200mVEIA/TIA-485 standard.Hot-Swap Capability (Except MAX13081E/MAX13084E/MAX13087E)Hot-Swap InputsWhen circuit boards are inserted into a hot or powered backplane, differential disturbances to the data buscan lead to data errors. Upon initial circuit board inser-tion, the data communication processor undergoes itsown power-up sequence. During this period, the processor’s logic-output drivers are high impedanceand are unable to drive the DE and RE inputs of these devices to a defined logic level. Leakage currents up to±10µA from the high-impedance state of the proces-sor’s logic drivers could cause standard CMOS enableinputs of a transceiver to drift to an incorrect logic level. Additionally, parasitic circuit board capacitance couldcause coupling of V CC or GND to the enable inputs. Without the hot-swap capability, these factors could improperly enable the transceiver’s driver or receiver.When V CC rises, an internal pulldown circuit holds DElow and RE high. After the initial power-up sequence,the pulldown circuit becomes transparent, resetting thehot-swap tolerable input.Hot-Swap Input CircuitryThe enable inputs feature hot-swap capability. At theinput there are two NMOS devices, M1 and M2 (Figure 9). When V CC ramps from zero, an internal 7µstimer turns on M2 and sets the SR latch, which alsoturns on M1. Transistors M2, a 1.5mA current sink, andM1, a 500µA current sink, pull DE to GND through a5kΩresistor. M2 is designed to pull DE to the disabledstate against an external parasitic capacitance up to100pF that can drive DE high. After 7µs, the timer deactivates M2 while M1 remains on, holding DE low against three-state leakages that can drive DE high. M1 remains on until an external source overcomes the required input current. At this time, the SR latch resetsand M1 turns off. When M1 turns off, DE reverts to a standard, high-impedance CMOS input. Whenever V CCdrops below 1V, the hot-swap input is reset.For RE there is a complementary circuit employing two PMOS devices pulling RE to V CC. MAX13080E–MAX13089E+5.0V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 13080E –M A X 13089EMAX13089E ProgrammingThe MAX13089E has several programmable operating modes. Transmitter rise and fall times are programma-ble, resulting in maximum data rates of 250kbps,500kbps, and 16Mbps. To select the desired data rate,drive SRL to one of three possible states by using a three-state driver: V CC , GND, or unconnected. F or 250kbps operation, set the three-state device in high-impedance mode or leave SRL unconnected. F or 500kbps operation, drive SRL high or connect it to V CC .F or 16Mbps operation, drive SRL low or connect it to GND. SRL can be changed during operation without interrupting data communications.Occasionally, twisted-pair lines are connected backward from normal orientation. The MAX13089E has two pins that invert the phase of the driver and the receiver to cor-rect this problem. F or normal operation, drive TXP and RXP low, connect them to ground, or leave them uncon-nected (internal pulldown). To invert the driver phase,drive TXP high or connect it to V CC . To invert the receiver phase, drive RXP high or connect it to V CC . Note that the receiver threshold is positive when RXP is high.The MAX13089E can operate in full- or half-duplex mode. Drive H/F low, leave it unconnected (internal pulldown), or connect it to GND for full-duplex opera-tion. Drive H/F high for half-duplex operation. In full-duplex mode, the pin configuration of the driver and receiver is the same as that of a MAX13080E. In half-duplex mode, the receiver inputs are internally connect-ed to the driver outputs through a resistor-divider. This effectively changes the function of the device’s outputs.Y becomes the noninverting driver output and receiver input, Z becomes the inverting driver output and receiver input. In half-duplex mode, A and B are still connected to ground through an internal resistor-divider but they are not internally connected to the receiver.±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro-static discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX13080E family of devices have extra protection against static electricity. Maxim’s engineers have devel-oped state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD struc-tures withstand high ESD in all states: normal operation,shutdown, and powered down. After an ESD event, the MAX13080E–MAX13089E keep working without latchup or damage.ESD protection can be tested in various ways. The transmitter outputs and receiver inputs of the MAX13080E–MAX13089E are characterized for protec-tion to the following limits:•±15kV using the Human Body Model•±6kV using the Contact Discharge method specified in IEC 61000-4-2ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 10a shows the Human Body Model, and Figure 10b shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a 1.5k Ωresistor.IEC 61000-4-2The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The MAX13080E family of devices helps you design equip-ment to meet IEC 61000-4-2, without the need for addi-tional ESD-protection components.+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversThe major difference between tests done using the Human Body Model and IEC 61000-4-2 is higher peak current in IEC 61000-4-2 because series resistance is lower in the IEC 61000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 61000-4-2 is generally lower than that measured using the Human Body Model. Figure 10c shows the IEC 61000-4-2 model, and Figure 10d shows the current waveform for IEC 61000-4-2 ESD Contact Discharge test.Machine Model The machine model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. The objective is to emulate the stress caused when I/O pins are contacted by handling equipment during test and assembly. Of course, all pins require this protection, not just RS-485 inputs and outputs.Applications Information256 Transceivers on the BusThe standard RS-485 receiver input impedance is 12kΩ(1-unit load), and the standard driver can drive up to 32-unit loads. The MAX13080E family of transceivers has a1/8-unit load receiver input impedance (96kΩ), allowingup to 256 transceivers to be connected in parallel on one communication line. Any combination of these devices,as well as other RS-485 transceivers with a total of 32-unit loads or fewer, can be connected to the line.Reduced EMI and ReflectionsThe MAX13080E/MAX13081E/MAX13082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to250kbps. The MAX13083E/MAX13084E/MAX13085Eoffer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX13089E withSRL = V CC or unconnected are slew-rate limited. WithSRL unconnected, the MAX13089E error-free data transmission is up to 250kbps. With SRL connected toV CC,the data transmit speeds up to 500kbps. MAX13080E–MAX13089E+5.0V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 13080E –M A X 13089ELow-Power Shutdown Mode (Except MAX13081E/MAX13084E/MAX13087E)Low-power shutdown mode is initiated by bringing both RE high and DE low. In shutdown, the devices typically draw only 2.8µA of supply current.RE and DE can be driven simultaneously; the devices are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 700ns, the devices are guaranteed to enter shutdown.Enable times t ZH and t ZL (see the Switching Characteristics section) assume the devices were not in a low-power shutdown state. Enable times t ZH(SHDN)and t ZL(SHDN)assume the devices were in shutdown state. It takes drivers and receivers longer to become enabled from low-power shutdown mode (t ZH(SHDN), t ZL(SHDN))than from driver/receiver-disable mode (t ZH , t ZL ).Driver Output ProtectionTwo mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention.The first, a foldback current limit on the output stage,provides immediate protection against short circuits over the whole common-mode voltage range (see the Typical Operating Characteristics ). The second, a thermal-shut-down circuit, forces the driver outputs into a high-imped-ance state if the die temperature exceeds +175°C (typ).Line LengthThe RS-485/RS-422 standard covers line lengths up to 4000ft. F or line lengths greater than 4000ft, use the repeater application shown in Figure 11.Typical ApplicationsThe MAX13082E/MAX13085E/MAX13088E/MAX13089E transceivers are designed for bidirectional data commu-nications on multipoint bus transmission lines. F igures 12 and 13 show typical network applications circuits. To minimize reflections, terminate the line at both ends in its characteristic impedance, and keep stub lengths off the main line as short as possible. The slew-rate-lim-ited MAX13082E/MAX13085E and the two modes of the MAX13089E are more tolerant of imperfect termination.Chip InformationTRANSISTOR COUNT: 1228PROCESS: BiCMOS+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversFigure 11. Line Repeater for MAX13080E/MAX13081E/MAX13083E/MAX13084E/MAX13086E/MAX13087E/MAX13089E in Full-Duplex Mode+5.0V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX13080E–MAX13089EM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversPin Configurations and Typical Operating CircuitsMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________21Pin Configurations and Typical Operating Circuits (continued)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 22______________________________________________________________________________________Ordering Information (continued)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________23Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

MAX941CSA中文资料

ELECTRICAL CHARACTERISTICS
(V+ = 2.7V to 6.0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C. See Note 14.)
PARAMETER Positive Supply Voltage Input Voltage Range
Internal hysteresis ensures clean output switching, even with slow-moving input signals. The MAX941 features latch enable and device shutdown.
The single MAX941 and dual MAX942 are offered in a tiny µMAX package. Both the single and dual MAX942 are available in 8-pin DIP and SO packages. The quad MAX944 comes in 14-pin DIP and narrow SO packages.
__________________________________________________________Pin Configurations
TOP VIEW
MAX941
V+ 1 IN+ 2 IN- 3 SHDN 4
8 N.C. 7 OUT 6 GND 5 LATCH
DIP/SO/µMAX
SYMBOL V+
V
MIN TYP MAX UNITS

MAX3051ESA-T中文资料

General DescriptionThe MAX3051 interfaces between the CAN protocol controller and the physical wires of the bus lines in a controller area network (CAN). The MAX3051 provides differential transmit capability to the bus and differential receive capability to the CAN controller. The MAX3051is primarily intended for +3.3V single-supply applica-tions that do not require the stringent fault protection specified by the automotive industry (ISO 11898).The MAX3051 features four different modes of opera-tion: high-speed, slope-control, standby, and shutdown mode. H igh-speed mode allows data rates up to 1Mbps. The slope-control mode can be used to program the slew rate of the transmitter for data rates of up to 500kbps. This reduces the effects of EMI, thus allowing the use of unshielded twisted or parallel cable.In standby mode, the transmitter is shut off and the receiver is pulled high, placing the MAX3051 in low-current mode. In shutdown mode, the transmitter and receiver are switched off.The MAX3051 input common-mode range is from -7V to +12V, exceeding the ISO 11898 specification of -2V to +7V. These features, and the programmable slew-rate limiting, make the part ideal for nonautomotive, harsh environments. The MAX3051 is available in 8-pin SO and SOT23 packages and operates over the -40°C to +85°C extended temperature range.ApplicationsPrinters JetLinkIndustrial Control and Networks Telecom Backplane Consumer ApplicationsFeatures♦Low +3.3V Single-Supply Operation ♦ESD Protection±12kV Human Body Model♦Wide -7V to +12V Common-Mode Range ♦Small SOT23 Package♦Four Operating ModesHigh-Speed Operation Up to 1MbpsSlope-Control Mode to Reduce EMI (Up to 500kbps)Standby ModeLow-Current Shutdown Mode ♦Thermal Shutdown ♦Current LimitingMAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver________________________________________________________________Maxim Integrated Products 1Pin ConfigurationOrdering Information19-3274; Rev 1; 6/05For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Typical Operating Circuit at end of data sheet.M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3.3V ±5%, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A =Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND..............................................................-0.3V to +6V TXD, RS, SHDN to GND...........................................-0.3V to +6V RXD to GND .............................................................-0.3V to +6V CANH, CANL to GND..........................................-7.5V to +12.5V Continuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.9mW/°C above +70°C)...................470mW 8-Pin SOT23 (derate 9.7mW/°C above +70°C).............774mWOperating Temperature Range ...........................-40°C to +85°C Maximum Junction Temperature.....................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature Range (soldering, 10s)......................+300°CMAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V CC = +3.3V ±5%, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A =+25°C.) (Note 1)M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 4_______________________________________________________________________________________Note 2:No other devices on the BUS.Note 3:BUS externally driven.TIMING CHARACTERISTICS(V CC = +3.3V ±5%, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A =+25°C.)MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver_______________________________________________________________________________________5Figure 1. Timing Diagram Figure 2. Timing Diagram for Standby SignalFigure 3. Timing Diagram for Shutdown Signal Figure 4. Timing Diagram for Shutdown-to-Standby SignalTiming DiagramsSLEW RATE vs. R RS AT 100kbpsM A X 3051t o c 01R RS (k Ω)S L E W R A T E (V /µs )18016014012010080604020510152025303500200M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 6_______________________________________________________________________________________SUPPLY CURRENT vs. DATA RATEDATA RATE (kbps)S U P P L Y C U R R E N T (m A )8006004002001316192225101000SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE (SHDN = V CC )M A X 3051t o c 03TEMPERATURE (°C)S H U T D O W N S U P P L Y C U R R E N T (n A )603510-15204060801001200-4085STANDBY SUPPLY CURRENT vs. TEMPERATURE (RS = V CC )M A X 3051t o c 04TEMPERATURE (°C)S T A N D B Y S U P P L Y C U R R E N T (µA )603510-158.59.09.510.010.511.08.0-4085RECEIVER PROPAGATION DELAY vs.TEMPERATURETEMPERATURE (°C)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )603510-155101520253035404550-4085DRIVER PROPAGATION DELAY vs.TEMPERATURETEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )603510-1510203040500-4085RECEIVER OUTPUT LOW vs.OUTPUT CURRENTOUTPUT CURRENT (mA)V O L T A G E R X D (V )4035510152520300.20.40.60.81.01.21.41.60045Typical Operating Characteristics(V CC = +3.3V, R L = 60Ω, C L = 100pF, T A = +25°C, unless otherwise specified.)MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver_______________________________________________________________________________________7RECEIVER PROPAGATION DELAYRXD 1v/divCAHN - CANL200ns/divDRIVER PROPAGATION DELAYM A X 3051t o c 11TXD 2V/divR RS = 24k ΩR RS = 75k ΩR RS = 100k Ω200ns/divDRIVER PROPAGATION DELAYTXD 1V/divCAHN - CANL200ns/divRS = GNDLOOPBACK PROPAGATION DELAYvs. R RSM A X 3051t o c 13R RS (k Ω)L O O P B A C K P R O P A G A T I O N D E L A Y (n s )180160140120100806040202004006008001000120000200Typical Operating Characteristics (continued)(V CC = +3.3V, R L = 60Ω, C L = 100pF, T A = +25°C, unless otherwise specified.)RECEIVER OUTPUT HIGH vs.OUTPUT CURRENTM A X 3051t o c 08OUTPUT CURRENT (mA)R E C E I V E R O U T P U T H I G H (V C C - R X D ) (V )71235460.20.40.60.81.01.21.41.61.8008DIFFERENTIAL VOLTAGE vs.DIFFERENTIAL LOADDIFFERENTIAL LOAD R L (Ω)D I F FE R E N T I A L V O L T A G E (V )2001000.51.01.52.02.53.03.50300M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 8_______________________________________________________________________________________Detailed DescriptionFigure 5. MAX3051 Functional DiagramMAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN TransceiverDetailed DescriptionThe MAX3051 interfaces between the CAN protocol controller and the physical wires of the bus lines in a CAN. It provides differential transmit capability to the bus and differential receive capability to the CAN con-troller. It is primarily intended for +3.3V single-supply applications that do not require the stringent fault pro-tection specified by the automotive industry (ISO 11898) The MAX3051 features four different modes of opera-tion: high-speed, slope-control, standby, and shutdown mode. H igh-speed mode allows data rates up to 1Mbps. The slope-control mode can be used to pro-gram the slew rate of the transmitter for data rates of up to 500kbps. This reduces the effects of EMI, thus allow-ing the use of unshielded twisted or parallel cable. In standby mode, the transmitter is shut off and the receiver is pulled high, placing the MAX3051 in low-current mode. In shutdown mode, the transmitter and receiver are switched off.The MAX3051 input common-mode range is from -7V to +12V, exceeding the ISO 11898 specification of -2V to +7V. These features, and the programmable slew-rate limiting, make the part ideal for nonautomotive, harsh environments.The transceivers operate from a single +3.3V supply and draw 35µA of supply current in dominant state and 2µA in recessive state. In standby mode, supply cur-rent is reduced to 8µA. In shutdown mode, supply cur-rent is less than 1µA.CANH and CANL are output short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry that places the driver outputs into a high-impedance state.TransmitterThe transmitter converts a single-ended input (TXD)from the CAN controller to differential outputs for the bus lines (CANH, CANL). The truth table for the trans-mitter and receiver is given in Table 1.ReceiverThe receiver reads differential inputs from the bus lines (CANH , CANL) and transfers this data as a single-ended output (RXD) to the CAN controller. It consists of a comparator that senses the difference V DIFF = (CANH - CANL) with respect to an internal threshold of +0.75V.If this V DIFF is greater than 0.75, a logic-low is present at RXD. If V DIFF is less than 0.75V, a logic-high is present.The receiver always echoes the CAN BUS data.The CANH and CANL common-mode range is -7V to +12V. RXD is logic-high when CANH and CANL are shorted or terminated and undriven.Mode SelectionHigh-Speed ModeConnect RS to ground to set the MAX3051 to high-speed mode. When operating in high-speed mode, the MAX3051 can achieve transmission rates of up to 1Mbps. In high-speed mode, use shielded twisted pair cable to avoid EMI problems.Slope-Control ModeConnect a resistor from RS to ground to select slope-control mode (Table 2). In slope-control mode, CANH and CANL slew rates are controlled by the resistor con-nected to the RS pin. Maximum transmission speeds are controlled by R RS and range from 40kbps to 500kbps. Controlling the rise and fall slopes reduces EMI and allows the use of an unshielded twisted pair or a parallel pair of wires as bus lines. The equation for selecting the resistor value is given by:R RS (k Ω) ≈12000 / (maximum speed in kbps)See the Slew Rate vs. RRS graph in the Typical Operating Characteristics .Standby ModeIf a logic-high is applied to RS, the MAX3051 enters a low-current standby mode. In this mode, the transmitterM A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver10______________________________________________________________________________________is switched off and the receiver is switched to a low-current/low-speed state. If dominant bits are detected,RXD switches to low level. The microcontroller should react to this condition by switching the transceiver back to normal operation.When the MAX3051 enters standby mode, RXD goes high for 4µs (max) regardless of the BUS state.However, after 4µs, RXD goes low only when the BUS is dominant, otherwise RXD remains high (when the BUS is recessive). For proper measurement of standby-to-receiver active time (t SBRXDL ), the BUS should be in dominant state (see Figure 2).ShutdownDrive SH DN high to enter shutdown mode. Connect SHDN to ground or leave floating for normal operation.Thermal ShutdownIf the junction temperature exceeds +160°C, the device is switched off. The hysteresis is approximately 25°C,disabling thermal shutdown once the temperature drops below 135°C. In thermal shutdown, CANH and CANL go recessive and all IC functions are disabled.Applications InformationReduced EMI and ReflectionsIn slope-control mode, the CANH and CANL outputs are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. In multidrop CAN applications, it is important to main-tain a direct point-to-point wiring scheme. A single pair of wires should connect each element of the CAN bus,and the two ends of the bus should be terminated with 120Ωresistors (Figure 6). A star configuration should never be used.Any deviation from the point-to-point wiring scheme creates a stub. The high-speed edge of the CAN data on a stub can create reflections back down the bus.These reflections can cause data errors by eroding the noise margin of the system.Although stubs are unavoidable in a multidrop system,care should be taken to keep these stubs as small as possible, especially in high-speed mode. In slope-con-trol mode, the requirements are not as rigorous, but stub length should still be minimized.Power Supply and BypassingThe MAX3051 requires no special layout considerations beyond common practices. Bypass V CC to GND with a 0.1µF ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths.MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver______________________________________________________________________________________11Chip InformationTRANSISTOR COUNT: 1024PROCESS: BiCMOSTypical Operating CircuitM A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 12______________________________________________________________________________________Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN TransceiverMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embod ied in a Maxim prod uct. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________13©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products, Inc.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

PT6314中文资料

100
90
Vin
80
9.0V
12.0V
70
15.0V
20.0V
26.0V
60
50
40
0
0.5
1
1.5
2
2.5
3
Iout-(Amps)
Efficiency - %
Efficiency vs Output Current
100
90
80
70
60
50
40
0
0.5
1
1.5
2
2.5
3
Iout-(Amps)
Vin
2
2.5
3
Iout-(Amps)
Iout-(Amps)
Thermal Derating (Ta)
3
2.5
(See Note B)
60°C 70°C
2
85°C
1.5
1
0.5
0
9
11 13 15 17 19 21 23 25 27
Vin-(Volts)
Iout-(Amps)
Thermal Derating (Ta)
元器件交易网
PT6300 Series
3 Amp Adjustable Positive Step-down Integrated Sw itching Regulators
SLTS031B
(Revised 9/30/2000)
• 90% Efficiency • Adjustable Output Voltage • Internal Short Circuit Protection • Over-Temperature Protection • On/Off Control (Ground Off) • Small SIP Footprint • Wide Input Range

PM5350用户手册

改变文本值：
p 按输入选定值，并移动到右侧下一位，若处于最大位，移动到第一位。 p 按[+]或[-]增加或减小活动位的值0~9、A~Z或其他值。
改变数字值：
p 按输入选定值，并移动到左侧下一位，若处在最大位，则移动第一位。 p 按[+]增加活动位的值0~9、”.”、“+”和“-”。
从列表中选择一个值：
附A-规格书电能表计规格
附B-通讯接线通讯能力电能表计的菊花链设备电击危险
附C-命令接口受保护的命令接口不受保护的命令接口
附D-寄存器列表词典
目录
35 35 35 35 35 36 37 37 38 38 39 39 40 40 40 40 41 42 42 43 43
3
介绍
仪表硬件
电力系统设置
支持多种不同的电力系统配置，请选择如下。设置电力系统： 1．在基本设置界面选择第一项，按[Edit]（编辑）选定电力系统。 2．按[+]、[-]在所支持的电力系统配置中选择。注意：见11页“支持的电力系统类型”。 3．按[OK]选择仪表相应的电力系统配置。
11
操作
支持的电力系统类型
2
I1,I3
3
3
I1,I2,I3
3PH3W Wye Res Gnd 3PH3W Dlt Crnr Gnd 3PH3W Dlt Ungnd 3PH3W Wye Ungnd
3
1*
I1
3PH3W Wye Res Gnd 3PH4W Opn Dlt Ctr Tp
3PH4W Dlt Ctr Tp 3PH4W Wye Gnd
Yes
接受
No
拒绝
Ack
确认报警

MAX541

MAX541是美国MAXIM公司生产的D/A转换芯片，它是低功耗（1.5mW），无缓冲电压输出，能够驱动60kv的负载，用单+5V电源工作的串行16位数模转换器。

其转换时间为1μs，输出电压变换范围为0V~VREF[16]。

下图为芯片的管脚图，并将MAX541的管脚功能列于表3-3中。

表3-3 MAX541管脚功能表
引脚号引脚名称引脚功能
1 OUT DAC 电压输出
2 AGND 模拟地
3 REF 电压参考输入，链接到外接的+2.5V参
考
4 CS 芯片选择，低电平有效
5 SCLK 串行时钟输入
6 DIN 串行数据输入
7 DGND 数字地
8 VDD +5V电源电压
MAX的工作原理是：模拟输出电压VOUT的输出范围由输入不同的数字代码来有规律的控制，当输入的16位数字代码全为0时，输出电压VOUT为0。

当输入的16位数字代码全为1时，输出电压约为VREF即2.5V。

于是VOUT的变化规律是，16位数字代码从0开始，每次加1，一直到全为1，对应的输出电压一直从0开始每次增加VREF*(1/65536)。

1111 1111 1111 1111 VREF*（65535/65536）
…….
…….
1000 0000 0000 0000 VREF*(32768/65536)
…….
……
0000 0000 0000 0001 VREF*(1/65536)
0000 0000 0000 0000 VREF *( 0/65536)。

PT6315-S中文资料

VFD Driver/Controller IC PT6315-S DESCRIPTIONPT6315-S is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/4 to 1/8 duty factor. Eight segment output lines, 4 grid output lines, 4 segment/grid output drive lines, one display memory, control circuit, key scan circuit are all incorporated into a single chip to build a highly reliable peripheral device for a single chip micro computer. Serial data is fed to PT6315-S via a three-line serial interface. It is housed in a 28pins, SOP.FEATURES• CMOS Technology•Low Power Consumption•Key Scanning (8 x 2 matrix)•Multiple Display Modes: (8 Segments, 8 Digits to 12 Segments, 4 Digits)•8-Step Dimming Circuitry•Serial Interface for Clock, Data Input, Data Output, Strobe Pins•No External Resistors Needed for Driver Outputs•Available in 28pins, SOPAPPLICATION•Microcomputer Peripheral DevicesVFD Driver/Controller IC PT6315-SBLOCK DIAGRAMSG1/KS1SG2/KS2SG3/KS3SG4/KS4SG5/KS5SG6/KS6SG7/KS7SG8/KS8SG9/GR8SG10/GR7SG11/GR6GR1GR2GR3GR4VEEGND VDD K2K1OSCRDIN DOUT CLK STBSerial Data InterfaceControlDisplay MemoryTiming GeneratorKey Matrix MemorySegment Driver/Grid Driver/Key Scan OutputGrid DriverDimming CircuitOSCSG12/GR5VFD Driver/Controller IC PT6315-SPIN CONFIGURATIONVEE 1 3 2 5 4 8 7 6 10 9 1211 PT6315-S2826 2724 25 21 22 2319 20 17181413 15 16CLK STB K1K2VSS VDD SG1/KS1SG2/KS2SG3/KS3SG4/KS4SG5/KS5SG6/KS6SG7/KS7SG8/KS8SG9/GR8SG10/GR7DIN DOUT OSC VSS VDD GR1GR2GR3GR4SG12/GR5SG11/GR6VFD Driver/Controller IC PT6315-SPIN DESCRIPTIONPin NameI/ODescriptionPin No. CLK IClock Input Pin This pin reads serial data at the risingedge and outputs data at the falling edge.1 STB I Serial Interface Strobe Pin The data input after the STBhas fallen is processed as a command. When this pin is“HIGH”, CLK is ignored.2 K1 to K2 IKey Data Input Pins The data sent to these pins arelatched at the end of the display cycle.3, 4 VSS - Logic Ground Pin 5, 25 VDD - Logic Power Supply6, 24 SG1/KS1 to SG8/KS8 OHigh Voltage Segment Output Pins Also acts as the KeySource7 to 14 VEE - Pull Down Level15 SG9/GR8 to SG12/GR5 O High Voltage Segment/Grid Output Pins16 to 19GR4 to GR1 O High Voltage Grid Output Pins20 to 23OSC IOscillator Input Pin A resistor is connected to this pin todetermine the oscillation frequency.26 DOUT O Data Output Pin (N-Channel, Open Drain) This pinoutputs serial data at the falling edge of the shift clock(starting from the lower bit).27 DIN IData Input Pin This pin inputs serial data at the risingedge of the shift clock (starting from the lower bits). 28VFD Driver/Controller IC PT6315-S FUNCTION DESCRIPTIONCOMMANDSCommands determine the display mode and status of PT6315-S. A command is the first byte (b0 to b7) inputted to PT6315-S via the DIN Pin after STB Pin has changed from “HIGH” to “LOW” State. If for some reason the STB Pin is set to “HIGH” while data or commands are being transmitted, the serial communication is initialized, and the data/commands being transmitted are considered invalid. COMMAND 1: DISPLAY MODE SETTING COMMANDSPT6315-S provides 4 display mode settings as shown in the diagram below: As stated earlier a command is the first one byte (b0 to b7) transmitted to PT6315-S via the DIN Pin when STB is “LOW”. However, for these commands, the bits 5 to 6 (b4 to b5) are ignored, bits 7 & 8 (b6 to b7) are given a value of “0”.The Display Mode Setting Commands determine the number of segments and grids to be used (1/4 to 1/8 duty, 12 to 8 segments). When these commands are executed, the display is forcibly turned off, the key scanning stops. A display “ON” command must be executed in order to resume display. If the same mode setting is selected, no command execution is take place, therefore, nothing happens.When Power is turned “ON”, the 8-digit, 8-segment mode is selected.Not Relevant Display Mode Settings:12segmentsdigits,40000:segments11digits,0011:5digits,segments1060100:digits,segments970101:8segments80110:digits,VFD Driver/Controller IC PT6315-SDisplay Mode and RAM AddressData transmitted from an external device to PT6315-S via the serial interface are stored in the Display RAM and are assigned addresses. The RAM Addresses of PT6315-S are given below in 8 bits unit.SG1 SG4SG5 SG8SG9 SG12DGT100H 01H 02HDGT203H 04H 05HDGT306H 07H 08HDGT409H 0AH 0BH12H 13H 14HDGT515H 16H 17HDGT6DGT718H 19H 1AHDGT81BH 1CH 1DHb0 b7SG1 SG2 SG3 SG4 X X X Xb0 b7SG5 SG6 SG7 SG8 X X X Xb0 b7 X X SG9 SG10 SG11 SG12 X XNotes: X=ignore this byteVFD Driver/Controller IC PT6315-S COMMAND 2: DATA SETTING COMMANDSThe Data Setting Commands executes the Data Write or Data Read Modes for PT6315-S. The Data Setting Command, the bits 5 and 6 (b4, b5) are ignored, bit 7 (b6) is given the value of “1” while bit 8 (b7) is given the value of “0”. Please refer to the diagram below.When power is turned ON, the bit 4 to bit 1 (b3 to b0) are given the value of “0”.toDataDisplayKeyDataKeyDataMode):(DisplaySettingsIncrementModebeenWrittenDataAddressafterhasAddress0:NormalModeOperationMode1:TestVFD Driver/Controller IC PT6315-SPT6315-S Key Matrix & Key Input Data Storage RAMPT6315-S Key Matrix consists of an 8 x 12 array as shown below:K1K2S G 1/K SS G 2/K S S G 3/K S S G 4/K S S G 5/K S 5S G 6/K S S G 7/K S S G 8/K S 8Each data entered by each key is stored as follows. They are read by a READ Command, starting from the last significant bit. When the most significant bit of the data (SG8, b7) has been read, the least significant bit of the next data (SG0, b1) is read.K1…………K1 K1…………K2K1…………K2K1……………K2 SG1/KS1 SG2/KS2 SG3/KS3 SG4/KS4* * * *SG5/KS5 SG6/KS6 SG7/KS7 SG8/KS8 b0………….b1 b2………….b3b4………….b5b6…………….b7ReadingSequenceNote: * = These sections are not relevant but are needed to read the transmission clock.VFD Driver/Controller IC PT6315-SCOMMAND 3: ADDRESS SETTING COMMANDSAddress Setting Commands are used to set the address of the display memory. The address isconsidered valid if it has a value of “00H” to “1DH”. If the address is set to 1EH or higher, the data is ignored until a valid address is set. When power is turned ON, the address is set at “00H”.Please refer to the diagram below.width =1/16 width = 2/16 width =4/16 width =10/16 width – 11/16 width =12/16 width =13/16 width = 14/16 0: Display Off (Key scan continues) 1: Display OnVFD Driver/Controller IC PT6315-S SCANNING AND DISPLAY TIMINGThe Key Scanning and display timing diagram is given below. One cycle of key scanning consists of 2 frames. The data of the 8 x 2 matrix is stored in the RAM.Internal Operating Frequency (fosc) = 224/TKey S can DataT=500sDIS P L AYµ1 Frame = T X (n +1)D IS P LAYVFD Driver/Controller IC PT6315-S SERIAL COMMUNICATION FORMATThe following diagram shows the PT6315-S serial communication format. The DOUT Pin is anN-channel, open-drain output pin, therefore, it is highly recommended that an external pull-up resistor (1KΩ to 10KΩ) must be connected to DOUT.RECEPTION (DATA/COMMAND WRITE)ntin u e sD INC L KTRANSMISSION (DATA READ)D INC L KD O U Twhere: twait (waiting time) ≥ 1µsIt must be noted that when the data is read, the waiting time (twait) between the rising of the eighth clock that has set the command and the falling of the first clock that has read the data is greater or equal to 1µs.VFD Driver/Controller IC PT6315-SSWITCHING CHARACTERISTIC WAVEFORMPT6315-S Switching Characteristics Waveform is given below.OSCSTBCLKDINGn90%10%50t TZH2t THZSn90%10%t THZt TZH1DOUTwhere:PW CLK (Clock Pulse Width) ≥ 400ns PW STB (Strobe Pulse Width) ≥ 1us tsetup (Data Setup Time) ≥ 100ns thold (Data Hold Time) ≥ 100ns tCLK-STB (Clock - Strobe Time) ≥ 1us tTHZ (Fall Time) ≤ 150us tTZH2 (Grid Rise Time) ≤ 0.5us (at VDD=5V) tPZL (Propagation Delay Time) ≤ 100ns tTZH2 (Grid Rise Time) ≤ 1.0us (at VDD=3.3V) tPLZ (Propagation DelayTime) ≤ 400ns tTZH1 (Segment Rise Time) ≤ 2.0us (at VDD=5V) fosc = Oscillation Frequency tTZH1 (Segment Rise Time) ≤ 3.0us (at VDD=3.3V)VFD Driver/Controller IC PT6315-S APPLICATIONSDisplay memory is updated by incrementing addresses. Please refer to the following diagram.ST BC L KD IN Co mm and 2Co mm and 3Da ta 1Da ta n Co mm and 1Co mm and 4 Where:Command 1: Display Mode Setting CommandCommand 2: Data Setting CommandCommand 3: Address Setting CommandData 1 to n: Transfer Display Data (24 Bytes max.)Command 4: Display Control CommandThe following diagram shows the waveforms when updating specific addresses.STBCLKDIN Co mm and 2Co mm and 3Da ta Co mm and 3Da taWhere:Command 2: Data Setting CommandCommand 3: Address Setting CommandData: Display DataVFD Driver/Controller IC PT6315-SINITIALSETTINGMAINLOOPNotes:1. Command 1: Display Mode Commands2. Command 2: Data Setting Commands3. Command 3: Address Setting Commands4. Command 4: Display Control Commands5. When IC power is applied for the first time, the contents of the Display RAM are not defined; thus, it is strongly suggested that the contents of the Display RAM be cleared during the initial setting.VFD Driver/Controller IC PT6315-S ABSOLUTE MAXIMUM RATINGS(Unless otherwise stated, Ta=25℃, GND=0V)Parameter Symbol Ratings Unit Logic Supply Voltage VDD -0.5 to +7 V Driver Supply Voltage VEE VDD +0.5 to VDD -40 V Logic Input Voltage VI -0.5 to VDD +0.5 V VFD Driver Output Voltage VO VEE -0.5 to VDD +0.5 VVFD Driver Output Current IOVFD-40 (Grid)-15 (Segment)mAOperating Temperature Topr -40 to +85 ℃Storage Temperature Tstg -65 to +150 ℃RECOMMENDED OPERATING RANGE(Unless otherwise stated, Ta=-25℃, GND=0V)RatingsParameter SymbolMin. Typ. Max.Unit Logic Supply Voltage VDD 3.0 5 5.5 V High-Level Input Voltage VIH 0.7VDD- VDD V Low-Level Input Voltage VIL 0 - 0.3VDD V Driver Supply Voltage VEE VDD -35- 0 VVFD Driver/Controller IC PT6315-SELECTRICAL CHARACTERISTICS(Unless otherwise stated, VDD=5V, GND=0V, VEE=VDD-35V, Ta=25℃)Parameter Symbol Test Condition Min. Typ.Max. UnitLow-Level Output Voltage VOLDOUT DOUT,IOLDOUT=4mA- - 0.4 VHigh-Level Output Current IOHSG VO=VDD -2VSG1/KS1 to SG8/KS8-3 - - mAHigh-Level OutputCurrentIOHGR VO=VDD -2VGR1 to GR4, SG9/GR8 to SG12/GR5-15 - - mAHigh-Level Input Voltage VIH - 0.7VDD - - V Low-Level Input Voltage VIL - - - 0.3VDD V Oscillation Frequency fosc R=100K Ω 350 500 650 KHz Input Current II VI=VDD or VSS - - ±1 µA Dynamic Current Consumption IDDdyn Under no loadDisplay OFF - - 5 mA(Unless otherwise stated, VDD=3.3V, GND=0V, VEE=VDD-35V, Ta=25℃)ParameterSymbolTest Condition Min. Typ.Max. UnitLow-Level Output Voltage VOLDOUT DOUT,IOLDOUT=4mA - - 0.4 VHigh-Level Output CurrentIOHSG VO=VDD -2VSG1/KS1 to SG8/KS8-1.5 - - mAHigh-Level Output CurrentIOHGR VO=VDD -2V GR1 to GR4, SG9/GR8 to SG12/GR5-6 - - mA High-Level Input Voltage VIH - 0.7VDD - VDD V Low-Level Input Voltage VIL - VSS - 0.3VDD V Oscillation Frequency fosc R=100K Ω 350 500 650 KHz Input Current II VI=VDD or VSS - - ±1 µA Dynamic Current Consumption IDDdynUnder no loadDisplay OFF- - 3 mAVFD Driver/Controller IC PT6315-S APPLICATION CIRCUITVFD Driver/Controller IC PT6315-S ORDER INFORMATIONOrder Part Number Package Type Top CodePT6315-S 28 Pins, SOP, 300mil PT6315-SPT6315-S (L) 28 Pins, SOP, 300mil PT6315-SNotes:1. (L), (C) or (S) = Lead Free.2. The Lead Free mark is put in front of the date code.VFD Driver/Controller IC PT6315-S PACKAGE INFORMATION28 PINS, SOP, 300 MILVFD Driver/Controller IC PT6315-S Symbol Min. Nom. Max.A 2.35 2.65A1 0.10 0.30B 0.33 0.51C 0.23 0.32D 17.70 18.10E 7.40 7.60bsc.e 1.27H 10.00 10.65h 0.25 0.75L 0.40 1.27a 0°8°Notes:1. Dimensioning and tolerancing per ANSI Y14.5-1982.2. Dimension “D” does not include mold flash , protrusions or gate burrs. Mold Flash, protrusion or gate burrs shall not exceed 0.15mm (0.006 in) per side.3. Dimension “E” does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25 mm (0.010 in) per side.4. The chamfer on the body is optional. It is not present, a visual index feature must be located within the crosshatched area.5. “L” is the length of the terminal for soldering to a substrate.6. “N” is the number of terminal positions. (N=28)7. The lead width “B” as measured 0.36 mm (0.014 in) or greater above the seating plane, shall not exceed a maximum value of 0.61 mm (0.24 in).8. Controlling dimension: MILLIMETER.9. Refer to JEDEC MS-013 Variation AEJEDEC is the trademark of the JEDEC SOLID STATE TECHNOLOGY ASSOCIATION。

MAX6411BS35-T中文资料

General DescriptionThe MAX6406–MAX6411 is a family of ultra-low power circuits used for monitoring battery, power-supply, and regulated system voltages. Each detector contains a precision bandgap reference comparator and is trimmed to specified trip threshold voltages. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring system voltages from 2.5V to 5.0V. A manual reset input is also included.The MAX6406–MAX6411 assert a signal whenever the V CC supply voltage falls below a preset threshold.These devices are differentiated by their output logic configurations and preset threshold voltages. The MAX6406/MAX6409 (push-pull) and the MAX6408/MAX6411 (open-drain) have an active-low output (OUT is logic low when V CC is below V TH ). The MAX6407/MAX6410 have an active-high push-pull output (OUT is logic high when V CC is below V TH ). All parts are guaranteed to be in the correct output logic state for V CC down to 1V. The detector is designed to ignore fast transients on V CC . The MAX6406/MAX6407/MAX6408 have voltage thresholds between 2.20V and 3.08V in approximately 100mV increments. The MAX6409/MAX6410/MAX6411 have voltage thresholds between 3.30V and 4.63V in approximately 100mV increments.Ultra-low supply current of 500nA (MAX6406/MAX6407/MAX6408) makes these parts ideal for use in portable equipment. These devices are available in 4-bump chip-scale packages (UCSP ).ApplicationsPortable/Battery-Powered Equipment Cell Phones PDAs MP3 Players PagersFeatureso Tiny 4-Bump (2 X 2) Chip-Scale Package, (Package Pending Full Qualification—Expected Completion Date 6/30/01. See UCSP Reliability Section for More Details.)o 70% Smaller Than SC70 Packages o Ultra-Low 500nA Supply Current (MAX6406/MAX6407/MAX6408)o Factory-Trimmed Reset Thresholds from 2.20V to 4.63V in Approximately 100mV Increments o ±2.5% Threshold Accuracy (-40°C to +85°C)o Manual Reset Inputo Guaranteed OUT Valid to V CC = 1.0Vo Three Reset Output Logic Options: Active-Low Push-Pull, Active-High Push-Pull, and Active-Low Open-Drain o Immune to Short V CC Transients o No External ComponentsMAX6406–MAX6411Voltage Detectors in 4-Bump (2 X 2)Chip-Scale PackageMaxim Integrated Products 119-2041; Rev 1; 8/01For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .The MAX6406–MAX6411 are available in factory-set V CCdetector thresholds from 2.20V to 4.63V, in approximately 0.1V increments. Choose the desired threshold suffix from Table 1and insert it in the blank space following “S”. There are 21standard versions with a required order increment of 2500pieces. Sample stock is generally held on the standard ver-sions only (Table1). Required order increment is 10,000 pieces for nonstandard versions (Table 2). Contact factory for avail-ability. All devices available in tape-and-reel only.UCSP reliability is integrally linked to the user’s assemblymethods, circuit board material, and environment. Refer to the UCSP Reliability Notice in the UCSP Reliability section of this data sheet for more information.Pin Configuration appears at end of data sheet.UCSP is a trademark of Maxim Integrated Products, Inc.Ordering InformationSelector GuideM A X 6406–M A X 6411Voltage Detectors in 4-Bump (2 X 2) Chip-Scale PackageABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.All voltages measured to GND unless otherwise noted.VCC..........................................................................-0.3V to +6V OUT/OUT ...................................................-0.3V to (V CC + 0.3V)OUT (open-drain).....................................................-0.3V to +6V MR ..............................................................-0.3V to (V CC + 0.3V)Input/Output Current into Any Pin.......................................20mAContinuous Power Dissipation (T A = +70°C)4-Pin/Bump UCSP (derate 3.8mW/°C above +70°C)....303mW Operating Temperature Range ..........................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range ............................-65°C to +160°C Bump Reflow Temperature .............................................+235°CELECTRICAL CHARACTERISTICS(V CC = 1.0V to 5.5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V CC = 3V and T A = +25°C.) (Note1)MAX6406–MAX6411Voltage Detectors in 4-Bump (2 X 2)Chip-Scale Package_______________________________________________________________________________________3Note 2:Guaranteed by design.ELECTRICAL CHARACTERISTICS (continued)(V CC = 1.0V to 5.5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at V CC = 3V and T A = +25°C.) (Note1)Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)00.30.20.10.50.40.90.80.70.61.0-40-2020406080SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )050100200150250-40-2020406080PROPAGATION DELAY (V CC FALLING)vs. TEMPERATURETEMPERATURE (°C)P R O P A G A T I O N D E L A Y (µs )M A X 6406–M A X 6411Voltage Detectors in 4-Bump (2 X 2) Chip-Scale Package 4_______________________________________________________________________________________Typical Operating Characteristics (continued)(T A = +25°C, unless otherwise noted.)040206012010080140-40-2020406080PROPAGATION DELAY (V CC RISING)vs. TEMPERATURETEMPERATURE (°C)P R O P A G A T I O N D E L A Y (µs )01100010010MAXIMUM TRANSIENT DURATION vs. THRESHOLD OVERDRIVE500200100400300THRESHOLD OVERDRIVE V TH - V CC (mV)M A X I M U M T R A N S I E N T D U R A T I O N (µs )MAX6406–MAX6411Voltage Detectors in 4-Bump (2 X 2)Chip-Scale Package_______________________________________________________________________________________5M A X 6406–M A X 6411Detailed DescriptionManual Reset InputMany µP-based products require manual reset capabil-ity, allowing the operator, a test technician, or external logic circuit to initiate a reset. A logic low on MR asserts OUT/OUT . OUT/OUT remains asserted while MR is low.This input has an internal 50k Ωpullup resistor, so it can be left open if it is not used. MR can be driven with TTL or CMOS logic levels, or with open-drain/collector out-puts. Connect a normally open momentary switch from MR to GND to create a manual reset function. If MR is driven from long cables or if the device is used in a noisy environment, connect a 0.1µF capacitor from MR to ground to provide additional noise immunity.Applications InformationInterfacing to Different LogicVoltage ComponentsThe MAX6408/MAX6411 have an active-low, open-drain output. This output structure will sink current when OUT is asserted. Connect a pullup resistor from OUT to any supply voltage up to 5.5V (Figure 1). Select a resistor value large enough to allow a valid logic low (see Electrical Characteristics ), and small enough to register a logic high while supplying all input currents and leakage paths connected to the OUT line.Voltage Detectors in 4-Bump (2 X 2) Chip-Scale Package 6_______________________________________________________________________________________Negative-Going V CC TransientsThese devices are relatively immune to short-duration,negative-going V CC transients (glitches).The Typical Operating Characteristics show the Maximum Transient Duration vs. Threshold Overdrive graph, for which output pulses are not generated. The graph shows the maximum pulse width that a negative-going V CC transient may typically have before the devices issue output signals. As the amplitude of the transient increases, the maximum allowable pulse width decreases.UCSP ReliabilityThe chip-scale package (UCSP) represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliabil-ity tests. CSP reliability is integrally linked to the user ’s assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a CSP package. Performance through Operating Life Test and Moisture Resistance remains uncompromised as it is primarily determined by the wafer-fabrication process.Mechanical stress performance is a greater considera-tion for a CSP package. CSPs are attached through direct solder contact to the user ’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be rmation on Maxim ’s qualification plan, test data, and usage recommendations are detailed in the UCSP appli-cation note, which can be found on Maxim ’s website at .Chip InformationTRANSISTOR COUNT: 512PROCESS: BiCMOSMAX6406–MAX6411Voltage Detectors in 4-Bump (2 X 2)Chip-Scale Package_______________________________________________________________________________________7Figure 1. Interfacing to Different Logic Voltage ComponentsPin ConfigurationM A X 6406–M A X 6411Voltage Detectors in 4-Bump (2 X 2) Chip-Scale Package Package InformationMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.8_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2001 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.。

功能安全数据册 - Cerabar S PMP731、PMP635、PMC731、PMC631说明书

Functional Safety data sheet/Datenblatt zur Funktionalen SicherheitCerabar SPMP731, PMP635, PMC731, PMC631Cerabar S PMP731, PMP635Valid configurations/Zulässige AusprägungenPMP731-xxxx M xxx, PMP635-xxxx M xxxxElectronics/Elektronik4...20 mA/HARTSafety-related output signal/Sicherheitsbezogenes Ausgangssignal4...20 mASafety Manual/Handbuch zur Funktionalen SicherheitSD159PType of assessment/ Art der BewertungIEC 61508/IEC 61511incl. proven-in-use/BetriebsbewährungAssessor/AssessorTÜV RheinlandSIL2Type/TypBHFT0 (proven-in-use/Betriebsbewährung: HFT = 0 É HFT = 1) Mode of operation/BetriebsartLow demand modeSafety function(s)/Sicherheitsfunktion(en)MIN, MAX, Range/Bereichλsd700.8 FITλsuλddλdu94.4 FITSFF88.1 %PFD avg(for T1 = 1 year/für T1 = 1 Jahr)4.14 × 10–4MTBF tot143 years/JahreMTTR8 hours/StundenRecommended proof test interval/Empfohlenes PrüfintervallT1 = 1 year/JahrVoting(s)/ Architektur(en)1oo1,diverse redundant/diversitär redundantValid hardware version/ Gültige Hardware-Versionfrom delivery date September 1998/ ab Auslieferungsdatum September 1998Valid software version/Gültige Software-Versionas of/ab 7.0Functional Safety data sheet/Datenblatt zur Funktionalen SicherheitCerabar SPMP731, PMP635, PMC731, PMC631Cerabar S PMC731, PMC631Valid configurations/Zulässige AusprägungenPMC731-xxxx M xxx, PMC631-xxxx M xxxElectronics/Elektronik4...20 mA/HARTSafety-related output signal/Sicherheitsbezogenes Ausgangssignal4...20 mASafety Manual/Handbuch zur Funktionalen SicherheitSD159PType of assessment/ Art der BewertungIEC 61508/IEC 61511incl. proven-in-use/BetriebsbewährungAssessor/AssessorTÜV RheinlandSIL2Type/TypBHFT0 (proven-in-use/Betriebsbewährung: HFT = 0 É HFT = 1) Mode of operation/BetriebsartLow demand modeSafety function(s)/Sicherheitsfunktion(en)MIN, MAX, Range/Bereichλsd685.7 FITλsuλddλdu146.9 FITSFF82.4 %PFD avg(for T1 = 1 year/für T1 = 1 Jahr)6.43 × 10–4MTBF tot137 years/JahreMTTR8 hours/StundenRecommended proof test interval/Empfohlenes PrüfintervallT1 = 1 year/JahrVoting(s)/ Architektur(en)1oo1,diverse redundant/diversitär redundantValid hardware version/ Gültige Hardware-Versionfrom delivery date September 1998/ ab Auslieferungsdatum September 1998Valid software version/Gültige Software-Versionas of/ab 7.0。

MAX6314US35D4中文资料

General DescriptionThe MAX6314 low-power CMOS microprocessor (µP)supervisory circuit is designed to monitor power supplies in µP and digital systems. The MAX6314’s RESET output is bidirectional, allowing it to be directly connected to µPs with bidirectional reset inputs, such as the 68HC11. It provides excellent circuit reliability and low cost by eliminating external components and adjustments. The MAX6314 also provides a debounced manual reset input.This device performs a single function: it asserts a reset signal whenever the V CC supply voltage falls below a preset threshold or whenever manual reset is asserted.Reset remains asserted for an internally programmed interval (reset timeout period) after V CC has risen above the reset threshold or manual reset is deasserted.The MAX6314 comes with factory-trimmed reset threshold voltages in 100mV increments from 2.5V to 5V. Preset timeout periods of 1ms, 20ms, 140ms,and 1120ms (minimum) are also available. The device comes in a SOT143 package.F or a µP supervisor with an open-drain reset pin, see the MAX6315 data sheet.________________________ApplicationsComputers ControllersIntelligent InstrumentsCritical µP and µC Power Monitoring Portable/Battery-Powered EquipmentFeatures♦Small SOT143 Package♦RESET Output Simplifies Interface to Bidirectional Reset I/Os♦Precision Factory-Set V CC Reset Thresholds:100mV Increments from 2.5V to 5V♦±1.8% Reset Threshold Accuracy at T A = +25°C ♦±2.5% Reset Threshold Accuracy Over Temp.♦Four Reset Timeout Periods Available: 1ms, 20ms, 140ms, or 1120ms (minimum) ♦Immune to Short V CC Transients ♦5µA Supply Current♦Pin-Compatible with MAX811MAX6314*68HC11/Bidirectional-CompatibleµP Reset Circuit________________________________________________________________Maxim Integrated Products1Pin ConfigurationTypical Operating Circuit19-1090; Rev 2; 12/05Ordering Information continued at end of data sheet.*Patents PendingFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering Information†The MAX6314 is available in a SOT143 package, -40°C to+85°C temperature range.††The first two letters in the package top mark identify the part,while the remaining two letters are the lot tracking code.Devices are available in both leaded and lead-free packaging.Specify lead-free by replacing “-T” with “+T” when ordering.M A X 631468HC11/Bidirectional-Compatible µP Reset Circuit 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +2.5V to +5.5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Note 1:The MAX6314 monitors V CC through an internal, factory-trimmed voltage divider that programs the nominal reset threshold.Factory-trimmed reset thresholds are available in 100mV increments from 2.5V to 5V (see Ordering and Marking Information ).Note 2:This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop.Note 3:Measured from RESET V OL to (0.8 x V CC ), R LOAD = ∞.V CC ........................................................................-0.3V to +6.0V All Other Pins..............................................-0.3V to (V CC + 0.3V)Input Current (V CC ).............................................................20mA Output Current (RESET )......................................................20mA Rate of Rise (V CC )...........................................................100V/µsContinuous Power Dissipation (T A = +70°C)SOT143 (derate 4mW/°C above +70°C).......................320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CMAX631468HC11/Bidirectional-CompatibleµP Reset Circuit_______________________________________________________________________________________3__________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)4.7k Ω PULL-UP 2V/divMAX6314 PULL-UP 2V/divINPUT 5V/div200ns/divPULLUP CHARACTERISTICS100pF4.7k Ω+5V74HC0574HC05V CCGNDMR 100pF+5VRESETMAX63146-50-303090SUPPLY CURRENT vs. TEMPERATURE215TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )-101050347060135SUPPLY CURRENT vs. SUPPLY VOLTAGE215SUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )2344500-50-301090POWER-DOWN RESET DELAYvs. TEMPERATURE1040TEMPERATURE (°C)P O W E R -D O W N R E S E T D E L A Y (µs )-1020303050701.040.96-50-301090NORMALIZED RESET TIMEOUT PERIOD vs. TEMPERATURE (V CC RISING)0.970.981.021.001.03M A X 6314-05TEMPERATURE (°C)N O R M A L I Z E D R E S E T T I M E O U T P E R I O D -100.991.013050701.0060.994-50-301090NORMALIZED RESET THRESHOLD vs. TEMPERATURE (V CC FALLING)0.9960.9981.0041.000M A X 6314-06TEMPERATURE (°C)N O R M A L I Z E D R E S E T T H R E S H O L D-101.0023050701000101001000MAXIMUM TRANSIENT DURATION vs. RESET COMPARATOR OVERDRIVE20RESET COMP. OVERDRIVE, V TH - V CC (mV)M A X I M U M T R A N S I E N T D U R A T I O N (µs )4060806000-50-301090RESET PULLUP TIME vs. TEMPERATURE100200500300TEMPERATURE (°C)R E S E T P U L L -U P -T I M E (n s )-10400305070Figure 1. Functional Diagram M A X 631468HC11/Bidirectional-Compatible µP Reset Circuit 4_____________________________________________________________________________________________________________________________________________________Pin DescriptionSupply Voltage and Reset Threshold Monitor InputV CC4Manual Reset Input. A logic low on MR asserts reset. Reset remains asserted as long as MR is low, and for the reset timeout period (t RP ) after the reset conditions are terminated. Connect to V CC if not used.MR 3PIN Active-Low Complementary Output. In addition to the normal n-channel pulldown, RESET has a p-channel pullup transistor in parallel with a 4.7k Ωresistor to facilitate connection to µPs with bidirectional resets. See the Reset Output section.RESET2GroundGND 1FUNCTIONNAMEMAX631468HC11/Bidirectional-CompatibleµP Reset Circuit_______________________________________________________________________________________5Detailed DescriptionThe MAX6314 has a reset output consisting of a 4.7k Ωpull-up resistor in parallel with a P-channel transistor and an N-channel pull down (Figure 1), allowing this IC to directly interface with microprocessors (µPs) that have bidirectional reset pins (see the Reset Output section).Reset OutputA µP’s reset input starts the µP in a known state. The MAX6314 asserts reset to prevent code-execution errors during power-up, power-down, or brownout conditions. RESET is guaranteed to be a logic low for V CC > 1V (see the Electrical Characteristics table).Once V CC exceeds the reset threshold, the internal timer keeps reset asserted for the reset timeout period (t RP ); after this interval RESET goes high. If a brownout condition occurs (monitored voltage dips below its pro-grammed reset threshold), RESET goes low. Any time V CC dips below the reset threshold, the internal timer resets to zero and RESET goes low. The internal timer starts when V CC returns above the reset threshold, and RESET remains low for the reset timeout period.The MAX6314’s RESET output is designed to interface with µPs that have bidirectional reset pins, such as the Motorola 68HC11. Like an open-drain output, the MAX6314 allows the µP or other devices to pull RESET low and assert a reset condition. However, unlike a standard open-drain output, it includes the commonly specified 4.7k Ωpullup resistor with a P-channel active pullup in parallel.This configuration allows the MAX6314 to solve a prob-lem associated with µPs that have bidirectional reset pins in systems where several devices connect to RESET . These µPs can often determine if a reset was asserted by an external device (i.e., the supervisor IC)or by the µP itself (due to a watchdog fault, clock error,or other source), and then jump to a vector appropriate for the source of the reset. However, if the µP does assert reset, it does not retain the information, but must determine the cause after the reset has occurred.The following procedure describes how this is done with the Motorola 68HC11. In all cases of reset, the µP pulls RESET low for about four E-clock cycles. It then releases RESET , waits for two E-clock cycles, then checks RESET ’s state. If RESET is still low, the µP con-cludes that the source of the reset was external and,when RESET eventually reaches the high state, jumps to the normal reset vector. In this case, stored state information is erased and processing begins fromscratch. If, on the other hand, RESET is high after the two E-clock cycle delay, the processor knows that it caused the reset itself and can jump to a different vec-tor and use stored state information to determine what caused the reset.The problem occurs with faster µPs; two E-clock cycles is only 500ns at 4MHz. When there are several devices on the reset line, the input capacitance and stray capacitance can prevent RESET from reaching the logic-high state (0.8 x V CC ) in the allowed time if only a passive pullup resistor is used. In this case, all resets will be interpreted as external. The µP is guaranteed to sink only 1.6mA, so the rise time cannot be much reduced by decreasing the recommended 4.7k Ωpullup resistance.The MAX6314 solves this problem by including a pullup transistor in parallel with the recommended 4.7k Ωresis-tor (Figure 1). The pullup resistor holds the output high until RESET is forced low by the µP reset I/O, or by the MAX6314 itself. Once RESET goes below 0.5V, a com-parator sets the transition edge flip-flop, indicating that the next transition for RESET will be low to high. As soon as RESET is released, the 4.7k Ωresistor pulls RESET up toward V CC . When RESET rises above 0.5V,the active p-channel pullup turns on for the 2µs duration of the one-shot. The parallel combination of the 4.7k Ωpullup and the p-channel transistor on-resistance quickly charges stray capacitance on the reset line, allowing RESET to transition low to high with-in the required two E-clock period, even with several devices on the reset line (Figure 2). Once the one-shot times out, the p-channel transistor turns off. This process occurs regardless of whether the reset was caused by V CC dipping below the reset threshold, MR being asserted, or the µP or other device asserting RESET . Because the MAX6314 includes the standard 4.7k Ωpullup resistor, no external pullup resistor is required. To minimize current consumption, the internal pullup resistor is disconnected whenever the MAX6314asserts RESET .Manual Reset InputMany µP-based products require manual reset capabil-ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR asserts reset. Reset remains asserted while MR is low,and for the reset active timeout period after MR returns high. To minimize current consumption, the internal 4.7k Ωpullup resistor on RESET is disconnected whenever RESET is asserted.M A X 631468HC11/Bidirectional-Compatible µP Reset Circuit 6_______________________________________________________________________________________MR has an internal 63k Ωpullup resistor, so it can be left open if not used. Connect a normally open momen-tary switch from MR to GND to create a manual reset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environment, connecting a 0.1µF capacitor from MR to ground provides additional noise immunity.__________Applications InformationNegative-Going V CC TransientsIn addition to issuing a reset to the µP during power-up,power-down, and brownout conditions, these devices are relatively immune to short-duration negative-going transients (glitches). The T ypical Operating Character-istics show the Maximum Transient Duration vs. Reset Threshold Overdrive, for which reset pulses are not generated. The graph was produced using negative-going pulses, starting at V RST max and ending below the programmed reset threshold by the magnitude indicated (reset threshold overdrive). The graph shows the maximum pulse width that a negative-going V CC transient may typically have without causing a reset pulse to be issued. As the amplitude of the transient increases (i.e., goes farther below the reset threshold),the maximum allowable pulse width decreases. A 0.1µF bypass capacitor mounted close to V CC provides addi-tional transient immunity.Ensuring a Valid RESET OutputDown to V CC = 0VWhen V CC falls below 1V, RESET no longer sinks current—it becomes an open circuit. Therefore, high-impedance CMOS-logic inputs connected to RESET can drift to undetermined voltages. This presents no problem in most applications, since most µP and other circuitry is inoperative with V CC below 1V. However, in applications where RESET must be valid down to V CC = 0V, adding a pull-down resistor to RESET will cause any stray leakage currents to flow to ground,holding RESET low (Figure 3). R1’s value is not critical;100k Ωis large enough not to load RESET and small enough to pull RESET to ground.Figure 2. MAX6314 Supports Additional Devices on the Reset BusFigure 3. RESET Valid to V CC = Ground CircuitMAX631468HC11/Bidirectional-CompatibleµP Reset Circuit_______________________________________________________________________________________7Figure 4. RESET Timing Diagram†The MAX6314 is available in a SOT143 package, -40°C to +85°C temperature range.††The first two letters in the package top mark identify the part, while the remaining two letters are the lot tracking code.†††Sample stocks generally held on the bolded products; also, the bolded products have 2,500 piece minimum-order quantities.Non-bolded products have 10,000 piece minimum-order quantities. Contact factory for details.Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering.Note:All devices available in tape-and-reel only. Contact factory for availability.___________________________________________Ordering Information (continued)M A X 631468HC11/Bidirectional-Compatible µP Reset Circuit Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.8_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products, Inc._____________________________Ordering and Marking Information (continued)†The MAX6314 is available in a SOT143 package, -40°C to +85°C temperature range.††The first two letters in the package top mark identify the part, while the remaining two letters are the lot tracking code.†††Sample stocks generally held on the bolded products; also, the bolded products have 2,500 piece minimum-order quantities.Non-bolded products have 10,000 piece minimum-order quantities. Contact factory for details.Devices are available in both leaded and lead-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering.Note:All devices available in tape-and-reel only. Contact factory for availability.Chip InformationTRANSISTOR COUNT: 519Package InformationFor the latest package outline information, go to /packages .。

MAX1978中文数据手册

用于Peltier模块的集成温度控制器概论MAX1978 / MAX1979是用于Peltier热电冷却器（TEC）模块的最小, 最安全, 最精确完整的单芯片温度控制器。

片上功率FET和热控制环路电路可最大限度地减少外部元件, 同时保持高效率。

可选择的500kHz / 1MHz开关频率和独特的纹波消除方案可优化元件尺寸和效率, 同时降低噪声。

内部MOSFET的开关速度经过优化, 可降低噪声和EMI。

超低漂移斩波放大器可保持±0.001°C的温度稳定性。

直接控制输出电流而不是电压, 以消除电流浪涌。

独立的加热和冷却电流和电压限制提供最高水平的TEC保护。

MAX1978采用单电源供电, 通过在两个同步降压调节器的输出之间偏置TEC, 提供双极性±3A输出。

真正的双极性操作控制温度, 在低负载电流下没有“死区”或其他非线性。

当设定点非常接近自然操作点时, 控制系统不会捕获, 其中仅需要少量的加热或冷却。

模拟控制信号精确设置TEC 电流。

MAX1979提供高达6A的单极性输出。

提供斩波稳定的仪表放大器和高精度积分放大器, 以创建比例积分（PI）或比例积分微分（PID）控制器。

仪表放大器可以连接外部NTC或PTC热敏电阻, 热电偶或半导体温度传感器。

提供模拟输出以监控TEC温度和电流。

此外, 单独的过热和欠温输出表明当TEC温度超出范围时。

片上电压基准为热敏电阻桥提供偏置。

MAX1978 / MAX1979采用薄型48引脚薄型QFN-EP 封装, 工作在-40°C至+ 85°C温度范围。

采用外露金属焊盘的耐热增强型QFN-EP封装可最大限度地降低工作结温。

评估套件可用于加速设计。

应用光纤激光模块典型工作电路出现在数据手册的最后。

WDM, DWDM激光二极管温度控制光纤网络设备EDFA光放大器电信光纤接口ATE特征♦尺寸最小, 最安全, 最精确完整的单芯片控制器♦片上功率MOSFET-无外部FET♦电路占用面积<0.93in2♦回路高度<3mm♦温度稳定性为0.001°C♦集成精密积分器和斩波稳定运算放大器♦精确, 独立的加热和冷却电流限制♦通过直接控制TEC电流消除浪涌♦可调节差分TEC电压限制♦低纹波和低噪声设计♦TEC电流监视器♦温度监控器♦过温和欠温警报♦双极性±3A输出电流（MAX1978）♦单极性+ 6A输出电流（MAX1979）订购信息* EP =裸焊盘。

631-632说明书

通讯速率最高1MBPS/40M
19>。绝缘电阻符合IEC255-5标准100MΩ/500V
20>。耐压测试IEC255-5标准2.0KV/50Hz/1min
21>。脉冲电压测试IEC-255-5标准5KV/1.2/50μS/0.5J
22>。抗干扰
【1】共模干扰IEC255-22-1标准2.5KV/1MHz/2S
df/dt频率的变化率，df滑差整定值
U母线电压，DYD低电压闭锁定值,软件定义50V，无需整定
DL断路器状态
单相接地跳闸或选线
当中性点经电阻接地或零序电流较大时应直接作用于跳闸
I0I0D
TI0S
I0实测零序电流值，I0D零序电流动作整定值
T延时时间，I0S零序延时整定值
当中性点不接地或经消弧线圈接地，若零序电流较小不需跳闸时，装置自动识别线路零序电流5次谐波的功率方向为正且经CAN通讯网确认本线路零序电流值最大时发单相接地予报信号。（CAN总线为无主站系统，可实现任意装置间的通讯）
控制部分由遥控跳合闸、手动跳合闸及防跳回路组成。
测量部分由电流测量、电压测量、频率测量、功率测量、功率因数测量、电度测量组成。
监视部分配有装置故障报警、保护定值不合理报警、控制回路断线报警、PT断线报警及每种保护动作的独立信号空接点输出。
CAN总线网络控制部分实现装置同网络上其它设备间进行实时的数据交换。完成遥测、遥信、遥控、遥调及远方修改保护定值、远方信号复归等功能，直接构成发电厂、变电站综合自动化系统。
【2】电气测量
三相电流、电压、有功及无功功率、功率因数、频率、有功电度及无功电度。
开关事件记录
直接记录外部8个开关状态事件的时间及顺序并对脉冲计数，对不同的应用8个开关状态定义可以不同。

MAX471MAX472的中文资料大全

MAX471/MAX472的特点、功能美国美信公司生产的精密高端电流检测放大器是一个系列化产品，有MAX471/MAX472、MAX4172/MAX4173等。

它们均有一个电流输出端，可以用一个电阻来简单地实现以地为参考点的电流/电压的转换，并可工作在较宽电压内。

MAX471/MAX472具有如下特点：●具有完美的高端电流检测功能；●内含精密的内部检测电阻（MAX471）；●在工作温度范围内，其精度为2%；●具有双向检测指示，可监控充电和放电状态；●内部检测电阻和检测能力为3A，并联使用时还可扩大检测电流范围；●使用外部检测电阻可任意扩展检测电流范围（MAX472）；●最大电源电流为100μA；●关闭方式时的电流仅为5μA；●电压范围为3～36V；●采用8脚DIP/SO/STO三种封装形式。

MAX471/MAX472的引脚排列如图1所示，图2所示为其内部功能框图。

表1为MAX471/MAX472的引脚功能说明。

MAX471的电流增益比已预设为500μA/A，由于2kΩ的输出电阻（ROUT）可产生1V/A的转换，因此±3A时的满度值为3V.用不同的ROUT电阻可设置不同的满度电压。

但对于MAX471，其输出电压不应大于VRS+。

对于MAX472，则不能大于。

MAX471引脚图如图１所示，MAX472引脚图如图２所示。

MAX471/MAX472的引脚功能说明引脚名称功能MAX471MAX47211SHDN关闭端。

正常运用时连接到地。

当此端接高电平时，电源电流小于5μA2，3-RS+内部电流检测电阻电池（或电源端）。

“+”仅指示与SIGN输出有关的流动方向。

封装时已将2和3连在了一起-2空脚88OUT 电流输出，它正比于流过TSENSE被测电路的幅度，在MAX741中，此引脚到地之间应接一个2kΩ电阻，每一安培被测电流将产生大小等于1V的电压OUT端为电流幅度输出端，而SIGN端可用来指示输出电流的方向。

MAX352中文资料

Note 2: All leads are soldered or welded to PC board.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Digital Inputs, VCOM, VNC, VNO (Note 1) ...........(V- - 2V) to (V+ + 2V) .........................................................or 30mA (whichever occurs first) Current (any terminal) .........................................................30mA Peak Current COM_, NO_, NC_
Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C

MAX6307UK50D2-T中文资料

nfigurations and Typical Operating Circuit appear at end of data sheet. Ordering Information continued at end of data sheet. Standard Versions Table appears at end of data sheet.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
PARAMETER VCC Range Supply Current ICC SYMBOL VCC = 5.5V MAX6306/MAX6307/ MAX6309/MAX6310/ MAX6312/MAX6313 VTH MAX6306E/MAX6307/ MAX6309E/MAX6310E/ MAX6312E/MAX6313E Reset Threshold Reset Threshold VTH/°C VTH HYST D1 Reset Timeout Period tRP D2 D3 D4 VCC > 4.25V, ISINK = 3.2mA VOL RESET Output Voltage VOH MAX6305–MAX6310 VCC > 2.5V, ISINK = 1.2mA VCC > 1.2V, ISINK = 500µA VCC > 1.0V, ISINK = 50µA VCC > 4.25V, MAX6308/MAX6309/ ISOURCE = 800µA MAX6310 VCC > 2.5V, ISOURCE = 500µA VCC > 4.25V, ISINK = 3.2mA VCC > 2.5V, ISINK = 1.2mA MAX6311/MAX6312/ VCC > 1.8V, MAX6313 ISOURCE = 150µA VCC > 1.0V, ISOURCE = 10µA 0.8 x VCC 0.8 x VCC VCC - 1.5 V 0.8 x VCC 0.4 0.3 V 1.0 20 140 1120 TA = +25°C TA = 0°C to +70°C VTH 1.5% VTH 2.5% VTH 2.5% CONDITIONS TA = -40°C to +85°C (Note 2) MIN 1.0 8 VTH VTH TYP MAX 5.5 16 VTH + 1.5% VTH + 2.5% VTH + 2.5% ppm/°C mV 2.0 40 280 2240 0.4 0.3 0.3 0.3 V ms V UNITS

MAXIM MAX6315 数据手册

________________General DescriptionThe MAX6315 low-power CMOS microprocessor (µP)supervisory circuit is designed to monitor power sup-plies in µP and digital systems. It provides excellent cir-cuit reliability and low cost by eliminating external components and adjustments. The MAX6315 also pro-vides a debounced manual reset input.This device performs a single function: it asserts a reset signal whenever the V CC supply voltage falls below a preset threshold or whenever manual reset is asserted.Reset remains asserted for an internally programmed interval (reset timeout period) after V CC has risen above the reset threshold or manual reset is deasserted. The MAX6315’s open-drain RESET output can be pulled up to a voltage higher than V CC .The MAX6315 comes with factory-trimmed reset thresh-old voltages in 100mV increments from 2.5V to 5V.Preset timeout periods of 1ms, 20ms, 140ms, and 1120ms (minimum) are also available. The device comes in a SOT143 package.For microcontrollers (µCs) and µPs with bidirectional reset pins, see the MAX6314 data sheet.________________________ApplicationsComputers ControllersIntelligent InstrumentsCritical µP and µC Power Monitoring Portable/Battery-Powered Equipment____________________________Featureso Small SOT143 Packageo Open-Drain RESET Output Can Exceed V CC o Precision, Factory-Set V CC Reset Thresholds:100mV Increments from 2.5V to 5V o ±1.8% Reset Threshold Accuracy at T A = +25°C o ±2.5% Reset Threshold Accuracy Over Temp.o Four Reset Timeout Periods Available: 1ms, 20ms, 140ms, or 1120ms (minimum) o Immune to Short V CC Transients o 5µA Supply Currento Pin-Compatible with MAX811MAX6315Open-Drain SOT µP Reset Circuit________________________________________________________________Maxim Integrated Products 1__________________Pin Configuration__________Typical Operating Circuit19-2000; Rev 1; 1/99Ordering and Marking Information appear at end of data sheet.For free samples & the latest literature: , or phone 1-800-998-8800.For small orders, phone 1-800-835-8769.查询MAX6315US25D1-T供应商M A X 6315Open-Drain SOT µP Reset Circuit 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +2.5V to +5.5V, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Note 1:The MAX6315 monitors V CC through an internal factory-trimmed voltage divider that programs the nominal reset threshold.Factory-trimmed reset thresholds are available in 100mV increments from 2.5V to 5V (see Ordering and Marking Information ).V CC ........................................................................-0.3V to +6.0V RESET ....................................................................-0.3V to +6.0V All Other Pins..............................................-0.3V to (V CC + 0.3V)Input Current (V CC ).............................................................20mA Output Current (RESET )......................................................20mA Rate of Rise (V CC )...........................................................100V/µsContinuous Power Dissipation (T A = +70°C)SOT143 (derate 4mW/°C above +70°C)........................320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CMAX6315Open-Drain SOT µP Reset Circuit_______________________________________________________________________________________360-50-303090SUPPLY CURRENT vs. TEMPERATURE215TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )-101050347060135SUPPLY CURRENT vs. SUPPLY VOLTAGE215SUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )2344500-50-301090POWER-DOWN RESET DELAYvs. TEMPERATURE1040TEMPERATURE (°C)P O W E R -D O W N R E S E T D E L A Y (µs )-1020303050701.040.96-50-301090NORMALIZED RESET TIMEOUT PERIOD vs. TEMPERATURE (V CC RISING)0.970.981.021.001.03M A X 6315-04TEMPERATURE (°C)N O R M A L I Z E D R E S E T T I M E O U T P E R I O D-100.991.013050701.0060.994-50-301090NORMALIZED RESET THRESHOLD vs. TEMPERATURE (V CC FALLING)0.9960.9981.0041.000M A X 6315-05TEMPERATURE (°C)N O R M A L I Z E D R E S E T T H R E S H O L D-101.0023050701000101001000MAXIMUM TRANSIENT DURATION vs. RESET COMPARATOR OVERDRIVE20RESET COMP. OVERDRIVE, V TH - V CC (mV)M A X I M U M T R A N S I E N T D U R A T I O N (µs )406080__________________________________________Typical Operating Characteristics(T A= +25°C, unless otherwise noted.)______________________________________________________________Pin Description_______________Detailed DescriptionReset OutputA microprocessor’s (µP’s) reset input starts the µP in a known state. The MAX6315 asserts reset to prevent code-execution errors during power-up, power-down,or brownout conditions. RESET is guaranteed to be a logic low for V CC > 1V (see Electrical Characteristics ).Once V CC exceeds the reset threshold, the internal timer keeps reset asserted for the reset timeout period (t RP ); after this interval RESET goes high. If a brownout condition occurs (monitored voltage dips below its pro-grammed reset threshold), RESET goes low. Any time V CC dips below the reset threshold, the internal timer resets to zero and RESET goes low. The internal timer starts when V CC returns above the reset threshold, and RESET remains low for the reset timeout period.The MAX6315’s RESET output structure is a simple open-drain N-channel MOSFET switch. Connect a pull-up resistor to any supply in the 0V to +6V range. Select a resistor value large enough to register a logic low when RESET is asserted (see Electrical Characteristics ),and small enough to register a logic high while supply-ing all input current and leakage paths connected to the RESET line. A 10k Ωpull-up is sufficient in most applica-tions.Often, the pull-up connected to the MAX6315’s RESET output will connect to the supply voltage monitored at the IC’s V CC pin. However, some systems may use the open-drain output to level-shift from the monitored sup-ply to reset circuitry powered by some other supply (Figure 1). This is one useful feature of an open-drain output. Keep in mind that as the MAX6315’s V CC decreases below 1V, so does the IC’s ability to sink current at RESET . Finally, with any pull-up, RESET will be pulled high as V CC decays toward 0V. The voltage where this occurs depends on the pull-up resistor value and the voltage to which it connects (see Electrical Characteristics ).Manual-Reset InputMany µP-based products require manual-reset capabil-ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR asserts reset. Reset remains asserted while MR is low,and for the reset active timeout period after MR returns high.MR has an internal 63k Ωpull-up resistor, so it can be left open if not used. Connect a normally open momen-tary switch from MR to GND to create a manual reset function; external debounce circuitry is not required.If MR is driven from long cables or if the device is used in a noisy environment, connecting a 0.1µF capacitor from MR to ground provides additional noise immunity.__________Applications InformationNegative-Going V CC TransientsIn addition to issuing a reset to the µP during power-up,power-down, and brownout conditions, these devices are relatively immune to short-duration negative-going transients (glitches). The Typical Operating Character-istics show the Maximum Transient Duration vs. Reset Threshold Overdrive, for which reset pulses are not generated. The graph was produced using negative-going pulses, starting at V RST max and ending below the programmed reset threshold by the magnitude indi-cated (reset threshold overdrive). The graph shows the maximum pulse width that a negative-going V CC tran-sient may typically have without causing a reset pulse to be issued. As the transient amplitude increases (i.e.,goes farther below the reset threshold), the maximum allowable pulse width decreases. A 0.1µF bypass capacitor mounted close to V CC provides additional transient immunity.M A X 6315Open-Drain SOT µP Reset Circuit 4_______________________________________________________________________________________Figure 1. MAX6315 Open-Drain RESET Output Allows Use with Multiple SuppliesMAX6315Open-Drain SOT µP Reset Circuit_______________________________________________________________________________________5________________________________________________________Ordering Information†The MAX6315 is available in a SOT143 package, -40°C to +85°C temperature range.††The first two letters in the package top mark identify the part, while the remaining two letters are the lot tracking code.†††Sample stocks generally held on the bolded products; also, the bolded products have 2,500 piece minimum-order quantities.Non-bolded products have 10,000 piece minimum-order quantities. Contact factory for details.Note:All devices available in tape-and-reel only. Contact factory for availability.M A X 6315Open-Drain SOT µP Reset Circuit 6__________________________________________________________________________________________________________________________________Ordering Information (continued)†The MAX6315 is available in a SOT143 package, -40°C to +85°C temperature range.††The first two letters in the package top mark identify the part, while the remaining two letters are the lot tracking code.†††Sample stocks generally held on the bolded products; also, the bolded products have 2,500 piece minimum-order quantities.Non-bolded products have 10,000 piece minimum-order quantities. Contact factory for details.Note:All devices available in tape-and-reel only. Contact factory for availability.MAX6315Open-Drain SOT µP Reset Circuit_______________________________________________________________________________________7___________________Chip InformationTRANSISTOR COUNT: 519________________________________________________________Package InformationM A X 6315Open-Drain SOT µP Reset Circuit NOTESMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.8_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©1999 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.。

MB35型号的精密电子平衡器说明书

1. 1-MB35…-1 Technical data：技术参数（Technical data）单位（Unit）MB35D1 MB35C3精确度等级（OIML R60）D1C3 额定载荷Emax（Max. capacity） kg 220,550,1100,1760最小检定分度值（v min）% of Emax 0.0285 0.0100灵敏度（Sensitivity） mV/V2 2灵敏度误差（Sensitivity tolerance） % ±0.5000 ±0.1000温度对零点影响（TC Zero）% of Cn/10K±0.0400 ±0.0140温度对灵敏度影响（TC Span）% of Cn/10K±0.0500 ±0.0140非线性误差（Non-linearity）% of Cn±0.0500 ±0.0170滞后误差（Hysteresis error）% of Cn±0.0500 ±0.0170蠕变及蠕变恢复（30mins）（Creep、MDLR）%/30min±0.0500 ±0.0166零点平衡（Zero balance） mV/V0±0.10输入电阻（Input resistance）Ω >350输出电阻（Output resistance）Ω 350±2参考电压（Uref） V5工作电压范围（Bu）V 5 (15)绝缘电阻（Insulation resistance）GΩ/100V＞5额定温度范围（Nominal temperature rang）℃ -10～+40工作温度范围（Service temperature range）℃ -30～+70存储温度范围（Storage temperature range）℃ -50～+85安全承载（Safe load limit）% of Emax 150极限侧载（Lateral load limit）% of Emax 100破坏载荷（Breaking load）% of Emax 300允许动态载荷（Permissible dynamicload）（according to DIN 50100）% of Emax 70最大载荷下变形量（Deflection at Max.capacity），approx.mm 0.5重量（Weight approx.） kg 0.9保护等级（IP）IP66Material: 弹性体（Measuring element）电缆连接（Cable fitting）Cable-sheathAlloy steel Stainless steel/Sealing:VitonPVC2. 1-MB35…-1 Part Number Description Part NumberDescriptionDetailed description1-MB35C3/220KG-1 MB35C3/220kg L/C 2MV/V, C3, M12 THD 1-MB35C3/550KG-1 MB35C3/550kg L/C 2MV/V, C3, M12 THD 1-MB35C3/1.1T-1 MB35C3/1.1T L/C 2MV/V, C3, M12 THD 1-MB35C3/1.76T-1 MB35C3/1.76T L/C 2MV/V, C3, M12 THD 1-MB35D1/220KG-1 MB35D1/220kgL/C 2MV/V, D1, M12 THD 1-MB35D1/550KG-1 MB35D1/550kg L/C 2MV/V, D1, M12 THD 1-MB35D1/1.1T-1 MB35D1/1.1T L/C 2MV/V, D1, M12 THD 1-MB35D1/1.76T-1 MB35D1/1.76TL/C 2MV/V, D1, M12 THD3. 1-MB35…-1 Mounting dimension ：Cable:Shielded 4-core round cable(19/0.127mm) with PVC-jacketWiring code:Excitation voltage + : green Signal+:whiteSignal - :red Excitation voltage - :blackShield:Yellow, floating4. label: 4.1 Type labelVmin : XXXSAFE LOAD LIMIT = 150%Class : XXX Emax : XXXCn : X.XXmV/V2004MB35XXX /XXXPart NumberTypeClass Emax Cnvmin1-MB35C3/220KG-1 MB35C3/220kg C3 220kg 2.00mV/V 0.0100% 1-MB35C3/550KG-1 MB35C3/550kgC3 550kg 2.00mV/V 0.0100%1-MB35C3/1.1T-1 MB35C3/1.1t C3 1.1t 2.00mV/V 0.0100% 1-MB35C3/1.76T-1 MB35C3/1.76t C3 1.76t 2.00mV/V 0.0100% 1-MB35D1/220KG-1 MB35D1/220kgD1 220kg 2.00mV/V 0.0285%1-MB35D1/550KG-1 MB35D1/550kg D1 550kg 2.00mV/V 0.0285% 1-MB35D1/1.1T-1 MB35D1/1.1t D1 1.1t 2.00mV/V 0.0285% 1-MB35D1/1.76T-1 MB35D1/1.76t D1 1.76t 2.00mV/V 0.0285%4.2 Serial number labelF.-No.: xxxxxxxx4.3 Individual package labelXXXXXXLOAD CELLF.-No.: xxxxxxxx4.4 Outer package labelOrder P/N Altern P/N Type 1-MB35C3/220KG-1 1-MB35C3/220KG-1 MB35C3/220kg 1-MB35C3/550KG-1 1-MB35C3/550KG-1 MB35C3/550kg 1-MB35C3/1.1T-1 1-MB35C3/1.1T-1 MB35C3/1.1t 1-MB35C3/1.76T-1 1-MB35C3/1.76T-1 MB35C3/1.76t 1-MB35D1/220KG-1 1-MB35D1/220KG-1 MB35D1/220kg 1-MB35D1/550KG-1 1-MB35D1/550KG-1 MB35D1/550kg 1-MB35D1/1.1T-1 1-MB35D1/1.1T-1 MB35D1/1.1t 1-MB35D1/1.76T-1 1-MB35D1/1.76T-1 MB35D1/1.76t 编制：审核：批准：。