74HC173 Datasheet – Quad D-type Flip-Flop ( PDF )

Part Number: 74HC173

Function: Quad D-type flip-flop, positive-edge trigger, 3-state

Package: DIP, SOP 16 Pin Type

Manufacturer: Philips Electronics ( https://www.nxp.com/ )


74HC173 datasheet



The 74HC173 / 74HCT173 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The devices are 4-bit parallel load registers with clock enable control, 3-state buffered outputs (Q0to Q3) and master reset (MR).

The master reset input (MR) is an active HIGH asynchronous input. When MR is HIGH, all four flip-flops are reset (cleared) independently of any other input condition.

The 3-state output buffers are controlled by a 2-input NOR gate.



1. Gated input enable for hold (do nothing) mode

2. Gated output enable control

3. Edge-triggered D-type register

4. Asynchronous master reset

5. Output capability: bus driver

6. ICC category: MSI


Other data sheets are available within the file:

74173, 74HC173DB, 74HC173PW, 74HC173U

74HC173 Datasheet PDF Download

74HC173 pdf