Datasheet Texas Instruments SN74HCT257DR — 数据表


        



 
  

SCLS072D -NOVEMBER 1988 -REVISED SEPTEMBER 2003 D Operating Voltage Range of 4.5 V to 5.5 V
D High-Current 3-State Outputs Interface
Directly With System Bus D Typical tpd = 17 ns
D Low Power Consumption, 80-ВµA Max ICC
D В±6-mA Output Drive at 5 V 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 1A
A/B
NC
VCC
OE VCC
OE
4A
4B
4Y
3A
3B
3Y 1B
1Y
NC
2A
2B 4 3 2 1 20 19
18 5 17 6 16 7 15 8 14 …