© Semiconductor Components Industries, LLC, 2002

July, 2002 – Rev. 6

1

Publication Order Number:

MC74AC139/D

MC74AC139, MC74ACT139

Dual 1-of-4

Decoder/Demultiplexer

The MC74AC139/74ACT139 is a high–speed, dual 1–of–4

decoder/demultiplexer. The device has two independent decoders,

each accepting two inputs and providing four mutually–exclusive

active–LOW outputs. Each decoder has an active–LOW Enable input

which can be used as a data input for a 4–output demultiplexer. Each

half of the MC74AC139/74ACT139 can be used as a function

generator providing four minterms of two variables.

15

16

14

13

12

11

10

2

1

3

4

567

9

8

GND

Figure 1. Pinout: 16–Lead Packages Conductors

(Top View)

PIN ASSIGNMENT

PIN

FUNCTION

Address Inputs

E

Enable Inputs

Outputs

TRUTH TABLE

Inputs

Outputs

E

H

X

X

H

H

H

H

L

L

L

L

H

H

H

L

H

L

H

L

H

H

L

L

H

H

H

L

H

L

H

H

H

H

H

L

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

http://onsemi.com

DIP–16

N SUFFIX

CASE 648

1

16

SO–16

D SUFFIX

CASE 751B

1

16

Device

Package

Shipping

ORDERING INFORMATION

MC74AC139N

PDIP–16

25 Units/Rail

MC74AC139D

SOIC–16

48 Units/Rail

MC74AC139DR2

2500 Tape & Reel

TSSOP–16

DT SUFFIX

CASE 948F

MC74AC139DT

TSSOP–16

96 Units/Rail

MC74AC139DTR2

TSSOP–16

SOIC–16

2500 Tape & Reel

MC74ACT139N

PDIP–16

25 Units/Rail

MC74ACT139D

SOIC–16

48 Units/Rail

MC74ACT139DR2

2500 Tape & Reel

MC74ACT139DT

TSSOP–16

96 Units/Rail

SOIC–16

1

16

See general marking information in the device marking

section on page 6 of this data sheet.

DEVICE MARKING INFORMATION

1

16

EIAJ–16

M SUFFIX

CASE 966

MC74AC139M

EIAJ–16

MC74AC139MEL

EIAJ–16

2000 Tape & Reel

MC74ACT139M

EIAJ–16

MC74ACT139MEL

EIAJ–16

2000 Tape & Reel

50 Units/Rail

50 Units/Rail