TC74HC238AP/AF

2007-10-01

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74HC238AP,TC74HC238AF

3-to-8 Line Decoder

The TC74HC238A is a high speed CMOS 3-to-8 DECODER

It achieves the high speed operation similar to equivalent

LSTTL while maintaining the CMOS low power dissipation.

When the device is enabled, 3 Binary Select inputs (A, B and C)

determine which one of the outputs (Y0-Y7) will go high.

When enable input G1 is held low or either

A

2

G

or

2B

G

is

held high, decoding function is inhibited and all the outputs go

low. G1,

A

2

G

, and

2B

G

inputs are provided ease cascade

connection and for use as an adress decoder for memory systems.

All inputs are equipped with protection circuits against static

discharge or transient excess voltage.

Features

• Output drive capability: 10 LSTTL loads

• Pin and function compatible with 74LS238

Pin Assignment

TC74HC238AP

TC74HC238AF

Weight

DIP16-P-300-2.54A

: 1.00 g (typ.)

SOP16-P-300-1.27A

: 0.18 g (typ.)