MC54F139J 查看數據表（PDF） - Motorola => Freescale
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MC54F139J Datasheet PDF : 3 Pages
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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.
• 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 Eb A0b A1b O0b O1b O2b O3b
16 15 14 13 12 11 10 9
12345678
Ea A0a A1a O0a O1a O2a O3a GND
Ea
1
LOGIC DIAGRAM
A0a A1a
Eb
23
15
A0b A1b
14 13
4
5
6
7
12
11
10
9
O0a O1a O2a O3a O0b O1b O2b O3b
VCC = PIN 16
GND = PIN 8
= PIN NUMBERS
FAST AND LS TTL DATA
4-56
MC54/74F139
DUAL 1-OF-4
DECODER
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 23
15 14 13
E A0 A1
E A0 A1
O0 O1 O2 O3 O0 O1 O2 O3
4 5 67
12 11 10 9
VCC = Pin 16
GND = Pin 8
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