MC54/74F139
DUAL 1-OF-4 DECODER
The MC54/74F139 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 de-
multiplexer. Each half of the F139 can be used as a function generator provid-
ing all four miniterms of two variables.
DUAL 1-OF-4
DECODER
FAST™ SHOTTKY TTL
•
•
•
•
Multifunction Capability
Two Completely Independent 1-of-4 Decoders
Active Low Mutually Exclusive Outputs
Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM
VCC
16
Eb
15
A0b
14
A1b
13
O0b
12
O1b
11
O2b
10
O3b
9
J SUFFIX
CERAMIC
CASE 620-09
16
1
16
1
N SUFFIX
PLASTIC
CASE 648-08
1
Ea
2
A0a
3
A1a
4
O0a
5
O1a
6
O2a
7
O3a
8
GND
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
LOGIC DIAGRAM
Ea
1
2
A0a A1a
3
Eb
15
A0b A1b
14
13
MC54FXXXJ
MC74FXXXN
MC74FXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
1
2 3
15
14 13
E
A0 A1
E
A0 A1
O0 O1 O2 O3
O0 O1 O2 O3
4
5
6
7
12
11
10
9
4 5 6 7
O3b
12 11 10 9
O0a
O1a
O2a
O3a
O0b
O1b
O2b
VCC = Pin 16
GND = Pin 8
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
FAST AND LS TTL DATA
4-56
MOTOROLA [ MOTOROLA, INC ]
