TC74HC155AP/AF/AFN

2007-10-01

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74HC155AP,TC74HC155AF,TC74HC155AFN

Dual 2-to-4 Line Decoder 3-to-8 Line Decoder

The TC74HC155A is a high speed CMOS DUAL 2-to-4 LINE

It achieves the high speed operation similar to equivalent

LSTTL while maintaining the CMOS low power dissipation.

It features dual 1-to-4 line demultiplexers with individual

strobe input (1G and 2G), individual data inputs (1C and 2C) and

common binary address inputs (A and B).

When both decoders are enabled by the strobes, the inverted

output of 1C data and non-inverted output of 2C data will be

brought to the selected output pins of each section.

A 1-to-8 line demultiplexer can be easily built up by providing

a data signal to both the 1C and 2C inputs; the output order will

be 1Y3 (MSB), 1Y2, 1Y1, 1Y0, 2Y3, 2Y2, 2Y1, 2Y0 (LSB).

This device can be used as a 2-to-4 line decoder or a 3-to-8 line

decoder when 1C is held high and 2C is held low.

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 74LS155

Pin Assignment

Note: xxxFN (JEDEC SOP) is not available in

Japan.

TC74HC155AP

TC74HC155AF

TC74HC155AFN

Weight

DIP16-P-300-2.54A

: 1.00 g (typ.)

SOP16-P-300-1.27A

: 0.18 g (typ.)

SOL16-P-150-1.27

: 0.13 g (typ.)