 Semiconductor Components Industries, LLC, 2012

October, 2012 − Rev. 7

1

Publication Order Number:

MC74LCX139/D

MC74LCX139

Dual Low-Voltage CMOS

2-to-4 Decoder/Demultiplexer

With 5 V−Tolerant Inputs

The MC74LCX139 is a high performance, 2−to−4 decoder/

demultiplexer operating from a 2.3 to 3.6 V supply. High impedance

TTL compatible inputs significantly reduce current loading to input

drivers while TTL compatible outputs offer improved switching noise

to be safely driven from 5 V devices. The MC74LCX139 is suitable

for memory address decoding and other TTL level bus oriented

applications.

The MC74LCX139 high−speed 2−to−4 decoder/demultiplexer

accepts two binary weighted inputs (A0, A1) and, when enabled,

provides four mutually exclusive active−LOW outputs. The LCX139

features an active low Enable input. All outputs will be HIGH unless

En is LOW. The LCX139 can be used as an 8−output demultiplexer by

using one of the active−LOW Enable inputs as the data input and the

other Enable input as a strobe. The Enable inputs which are not used

must be permanently tied to ground.

Current drive capability is 24 mA at the outputs.

Features

System Power Requirements



Human Body Model >2000 V



Machine Model >200 V

Compliant

MARKING

DIAGRAMS

SOIC−16

D SUFFIX

CASE 751B

TSSOP−16

DT SUFFIX

CASE 948F

16

1

16

1

See detailed ordering and shipping information in the package

dimensions section on page 3 of this data sheet.

ORDERING INFORMATION

http://onsemi.com

A

= Assembly Location

WL, L

= Wafer Lot

Y

= Year

WW, W = Work Week

G or G

= Pb−Free Package

LCX139G

AWLYWW

LCX

139

ALYWG

G

16

16

1

1

(Note: Microdot may be in either location)