SL74HCT374中文资料

SL74HCT374

Octal 3-State Noninverting D Flip-Flop

High-Performance Silicon-Gate CMOS

The SL74HCT374 is identical in pinout to the LS/ALS374.

The SL74HCT374 may be used as a level converter for interfacing TTL or NMOS outputs to High-Speed CMOS inputs.

Data meeting the setup and hold time is clocked to the outputs with the rising edge of the Clock. The Output Enable input does not affect the states of the flip-flops, but when Output Enable is high, the outputs are forced to the high-impedance state; thus, data may be stored even when the outputs are not enabled. TTL/NMOS-Compatible Input Levels

Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1.0 µA

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 20=VCC PIN 10 = GND

Output Enable L L L H

L,H,

X

FUNCTION TABLE

Inputs Clock D H L X X

Output Q H L no change Z

X = don’t care