MC74F138 Datasheet, PDF (1/3 Pages) Motorola, Inc – 1-OF-8 DECODER/ DEMULTIPLEXER

1-OF-8 DECODER/
DEMULTIPLEXER
The MC54/74F138 is a high speed 1-of-8 Decoder/Demultiplexer. This de-
vice is ideally suited for high speed bipolar memory chip select address de-
coding. The multiple input enables allow parallel expansion to a 1-of-24 de-
coder using just three F138 devices or to a 1-of-32 decoder using four F138s
and one inverter.
• Demultiplexing Capability
• Multiple Input Enable for Easy Expansion
• Active Low Mutually Exclusive Outputs
• Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC O0 O1 O2 O3 O4 O5 O6
16 15 14 13 12 11 10 9
12345678
A0 A1 A2 E1 E2 E3 O7 GND
A2 A1 A0
3
2
1
LOGIC DIAGRAM
E1 E2 E3
4 56
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
7
9
10
11
12
13
14
15
O7 O6 O5 O4 O3 O2 O1 O0
MC54/74F138
1-OF-8 DECODER/
DEMULTIPLEXER
FAST™ SHOTTKY TTL
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
MC54FXXXJ
MC74FXXXN
MC74FXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
1 2 3 456
123
A0 A1 A2
O0 O1 O2 O3 O4 O5 O6 O7
15 14 13 12 11 10 9 7
VCC = PIN 16
GND = PIN 8
FAST AND LS TTL DATA
4-53