TC74HC173AP/AF

2007-10-01

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

Quad D-Type Register (3-state)

The TC74HC173A is a high speed CMOS D-TYPE REGISTER

It achieves the high speed operation similar to equivalent

LSTTL while maintaining the CMOS low power dissipation.

It consists a 4-bit register consisting of D-type flip-flops and

3-state buffers. The four flip-flops are controlled by a common

clock input (CK) and a common clear input (CLR).

Signals applied to the data inputs (D1~D4) are stored in the

respective flip-flops on the positive going transition of CK when

clock control inputs (G1, G2) are held low.

The clear function is asynchronous to CK and active on a high

level. The stored data are enabled to each outputs when output

control inputs (M, N) are held low, else the outputs are high

impedance state.

All inputs are equipped with protection circuits against static

discharge or transient excess voltage.

Features

• Output drive capability: 15 LSTTL loads

• Pin and function compatible with 74LS173

Pin Assignment

TC74HC173AP

TC74HC173AF

Weight

DIP16-P-300-2.54A

: 1.00 g (typ.)

SOP16-P-300-1.27A

: 0.18 g (typ.)