74F139 查看數據表（PDF） - Philips Electronics

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74F139

Dual 1-of-4 decoder/demultiplexer

Philips Electronics 

Philips Semiconductors

1-of-4 decoder/demultiplexer

Product specification

74F139

FEATURES

• Demultiplexing capability

• Two independent 1-of-4 decoders

• Multifunction capability

DESCRIPTION

The 74F139 is a high speed, dual 1-of-4 decoder/demultiplexer. This

device has two independent decoders, each accepting two binary

weighted inputs (A0n, A1n) and providing four mutually exclusive

active-Low outputs (Q0n–Q3n). Each decoder has an active-Low

Enable (E). When E is High, every output is forced High. The Enable

can be used as the Data input for a 1-of-4 demultiplexer application.

PIN CONFIGURATION

Ea 1

A0a 2

A1a 3

Q0a 4

Q1a 5

Q2a 6

Q3a 7

GND 8

16 VCC

15 Eb

14 A0b

13 A1b

12 Q0b

11 Q1b

10 Q2b

9 Q3b

SF00129

TYPE

74F139

TYPICAL

PROPAGATION

DELAY

5.3ns

TYPICAL

SUPPLY CURRENT

(TOTAL)

13mA

ORDERING INFORMATION

DESCRIPTION

COMMERCIAL RANGE

VCC = 5V ±10%,

Tamb = 0°C to +70°C

16-pin plastic DIP

N74F139N

16-pin plastic SO

N74F139D

PKG DWG #

SOT38-4

SOT109-1

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS

DESCRIPTION

74F (U.L.) HIGH/LOW

Ana, Anb

Address inputs

1.0/1.0

Ea, Eb

Enable inputs (active Low)

1.0/1.0

Q0n–Q3n

Data outputs (active Low)

50/33

NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.

LOAD VALUE HIGH/LOW

20µA/0.6mA

20µA/0.6mA

1.0mA/20mA

LOGIC SYMBOL

IEC/IEEE SYMBOL

1

23

15

14 13

Ea

A0a A1a

DECODER a

Q0a Q1a Q2a Q3a

Eb

A0b A1b

DECODER b

Q0b Q1b Q2b Q3b

4

VCC = Pin 16

GND = Pin 8

56 7

12 11 10 9

SF00130

DEMUX

2

4

0

0

3

1

G

0

3

1

5

6

2

1

7

3

14

12

13

11

10

15

9

SF00131

February 23, 1990

2

853–0344 98903

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