UNISONIC TECHNOLOGIES CO., LTD

U74HC377

CMOS IC

www.unisonic.com.tw

1 of 8

Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R502-A49.A

OCTAL D-TYPE FLIP-FLOPS

WITH CLOCK ENABLE



DESCRIPTION

The device is positive-edge-triggered octal D-type flip-flops

with an enable input.

Information at the data (D) inputs meeting the setup time

requirements is transferred to the Q outputs on the positive-going

edge of the clock (CLK) pulse, if EN is low. Clock triggering

occurs at a particular voltage level and is not directly related to

the transition time of the positive-going pulse. When CLK is at

either the high or low level, the D input has no effect at the output.

These devices are designed to prevent false clocking by

transitions at EN .



FEATURES

* Wide Operating Voltage Range of 2V to 6V

* Outputs Can Drive Up To 10 LSTTL Loads

* ±4mA Output Drive at 5V

* Low Input Current of 1μA Max.

* Eight Flip-Flops With Single-Rail Outputs

* Clock Enable Latched to Avoid False Clocking

* Applications Include

- Buffer/Storage Registers

- Shift Registers

- Pattern Generators



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

U74HC377L-S20-T

U74HC377G-S20-T

SOP-20

Tube

U74HC377L-S20-R

U74HC377G-S20-R

SOP-20

Tape Reel

U74HC377L-P20-T

U74HC377G-P20-T

TSSOP-20

Tube

U74HC377L-P20-R

U74HC377G-P20-R

TSSOP-20

Tape Reel