1/10

July 2001

s

HIGH SPEED:

s

LOW POWER DISSIPATION:

s

HIGH NOISE IMMUNITY:

s

SYMMETRICAL OUTPUT IMPEDANCE:

s

BALANCED PROPAGATION DELAYS:

s

WIDE OPERATING VOLTAGE RANGE:

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 238

DESCRIPTION

The M74HC238 is an high speed CMOS 3 TO 8

LINE DECODER fabricated with silicon gate

If the device is enabled, 3 binary select inputs (A,

B and C) determine which one of outputs will go

high. When enable input G1 is held "Low" or either

G2A or G2B is held "High" decoding function is

inhibited and all the 8 outputs go low. Three

enable inputs are provided to ease cascade

connection

and

application

of

this

address

decoder in memory systems.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

M74HC238

3 TO 8 LINE DECODER

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

M74HC238B1R

SOP

M74HC238M1R

M74HC238RM13TR

TSSOP

M74HC238TTR

TSSOP

DIP

SOP