HD74HC245P中文资料

4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.
Max Unit 115 ns 23
6.0
— — 15 — 20
t PHL
2.0
— — 90 — 115 ns
4.5
— 8 18 — 23
6.0
— — 15 — 20
Output enable
t ZL
time
2.0
— — 150 — 190 ns
4.5
— 16 30 — 38
6.0
— — 26 — 32
Item Supply voltage range Input voltage Output voltage DC current drain per pin DC current drain per VCC, GND DC input diode current DC output diode current Power dissipation per package Storage temperature
HD74HC245
12.8 13.2 Max
20
11
Unit: mm
7.50
1
10
0.935 Max
0.20 ± 0.10
1.27
*0.42 ± 0.08 0.40 ± 0.06
0.15 0.12 M
*Dimension including the plating thickness Base material dimension
2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use.
Unit: mm
1.0 6.40 ± 0.20
0° – 8° 0.50 ± 0.10
+0.03 –0.04
0.07
Hitachi Code JEDEC EIAJ Mass (reference value)
TTP-20DA — — 0.07 g
6
HD74HC245
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document.
2.20 Max
*0.22 ± 0.05 0.20 ± 0.04
Unit: mm
7.80
+ –
0.20 0.301.150.70 ± 0.20
0° – 8°
Hitachi Code JEDEC EIAJ Mass (reference value)
FP-20DA — Conforms 0.31 g
5
2
HD74HC245
DC Characteristics
Item Input voltage
Output voltage
Off-state output current Input current Quiescent supply current
Ta = 25°C
Ta = –40 to +85°C
20
11
4.40
1
10
0.65
*0.22+–00..0078 0.20 ± 0.06
0.13 M
0.65 Max
0.10
1.10 Max
*Dimension including the plating thickness Base material dimension
*0.17 ± 0.05 0.15 ± 0.04
4.5
— — 0.26 — 0.33
6.0
— — 0.26 — 0.33
I OZ
6.0
— — ±0.5 — ±5.0 µA
Iin
6.0
— — ±0.1 — ±1.0 µA
I CC
6.0
— — 4.0 — 40 µA
Test Conditions
Vin = VIH or VIL IOH = –20 µA
3
HD74HC245
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C
Ta = –40 to +85°C
Item
Symbol
Propagation delay tPLH time
VCC (V) 2.0 4.5
Min Typ Max Min — — 90 — — 8 18 —
2.0
1.9 2.0 — 1.9 — V
4.5
4.4 4.5 — 4.4 —
6.0
5.9 6.0 — 5.9 —
4.5
4.18 — — 4.13 —
6.0
5.68 — — 5.63 —
VOL
2.0
— 0.0 0.1 — 0.1 V
4.5
— 0.0 0.1 — 0.1
6.0
— 0.0 0.1 — 0.1
HD74HC245
Pin Arrangement
DIR 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9
GND 10
(Top view)
20 VCC
19
Enable G
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
Absolute Maximum Ratings
Features
• High Speed Operation: tpd = 8 ns typ (CL = 50 pF) • High Output Current: Fanout of 15 LSTTL Loads • Wide Operating Voltage: VCC = 2 to 6 V • Low Input Current: 1 µA max • Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
HD74HC245
Octal Bus Transceivers (with 3-state outputs)
ADE-205-475 (Z) 1st. Edition Sep. 2000
Description
Each device has an active low enable input G and a direction control input, DIR. When DIR is high, data flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs. The HD74HC245 transfers true data from one bus to the other. This device does not have schmitt trigger inputs.
6.0
— — 26 — 32
Output rise/fall
t TLH
time
t THL
2.0
— — 60 — 75 ns