74LS173 4-bit D-type Register Tri-state

The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. The 74LS173A 4-bit registers include D-type flip-flops featuring totem-pole 3-state Outputs capable of driving highly capacitive or relatively low-impedance loads.

74LS173 Features

• 3-State Outputs Interface Directly With System Bus
• Gated Output-Control LInes for Enabling or Disabling the Outputs
• Fully Independent Clock Virtually

74LS173 Specifications

Supply Voltage	4.75 – 5.25Vdc
Maximum Clock Frequency	40Mhz
Power Dissipation	2mW/gate @100kHz
Minimum Output Current	8mA
Propagation Delay	10nS
Fan Out (TTL Loads)	20

74LS173 Pinout Diagram

74LS173 Pin Description

Pin No	Pin Name	Description
1	OE1	Output Enable (Active LOW) Inputs
2	OE2	Output Enable (Active LOW) Inputs
3	Q0	Output
4	Q1	Output
5	Q2	Output
6	Q3	Output
7	CP	Clock Pulse (Active HIGH Going Edge)Input
8	GND	Ground
9	IE1	Input Enable (Active LOW)
10	IE2	Input Enable (Active LOW)
11	D3	Data Input
12	D2	Data Input
13	D1	Data Input
14	D0	Data Input
15	MR	Master Reset
16	VCC	Positive Supply

Download 74LS173 4-bit D-type Register Tri-state Datasheet from the link given below.