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PDF HD74ACT139 Data sheet ( Hoja de datos )
| Número de pieza | HD74ACT139 | |
| Descripción | Dual 1-of-4 Decoder/Demultiplexer | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74AC139/HD74ACT139
Dual 1-of-4 Decoder/Demultiplexer
Description
The HD74AC139/HD74ACT139 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 HD74AC139/HD74ACT139 can be used as a function generator providing
all four minterms of two variables.
Features
• Multifunction Capability
• Two Completely Independent 1-of-4 Decoders
• Active Low Mutually Exclusive Outputs
• Outputs Source/Sink 24 mA
• HD74ACT139 has TTL-Compatible Inputs
1 page  
HD74AC139/HD74ACT139
AC Characteristics: HD74AC139
Item
Symbol VCC (V)*1
Propagation delay
t PLH
3.3
An to On
5.0
Propagation delay
t PHL
3.3
An to On
5.0
Propagation delay
t PLH
3.3
En to On
5.0
Propagation delay
t PHL
3.3
En to On
5.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = +25°C
CL = 50 pF
Min Typ
1.0 8.0
1.0 6.5
1.0 7.0
1.0 5.5
1.0 9.5
1.0 7.0
1.0 8.0
1.0 6.0
Max
11.5
8.5
10.0
7.5
12.0
8.5
10.0
7.5
Ta = –40°C to +85°C
CL = 50 pF
Min Max
1.0 13.0
1.0 9.5
1.0 11.0
1.0 8.5
1.0 13.0
1.0 10.0
1.0 11.0
1.0 8.5
Unit
ns
ns
ns
ns
AC Characteristics: HD74ACT139
Item
Symbol VCC (V)*1
Propagation delay
An to On
t PLH
5.0
Propagation delay
An to On
t PHL
5.0
Propagation delay
En to On
t PLH
5.0
Propagation delay
En to On
t PHL
5.0
Note: 1. Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = +25°C
CL = 50 pF
Min Typ
1.0 6.0
1.0 6.0
1.0 7.0
1.0 7.0
Max
8.5
9.5
10.0
9.5
Ta = –40°C to +85°C
CL = 50 pF
Min Max
1.0 9.5
Unit
ns
1.0 10.5 ns
1.0 11.0 ns
1.0 10.5 ns
Capacitance
Item
Input capacitance
Power dissipation capacitance
Symbol
CIN
CPD
Typ
4.5
40.0
Unit
pF
pF
Condition
VCC = 5.5 V
VCC = 5.0 V
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet HD74ACT139.PDF ] | |
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