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PDF HD74AC539 Data sheet ( Hoja de datos )
| Número de pieza | HD74AC539 | |
| Descripción | Dual 1-of-4 Decoder with 3-State Output | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74AC539
Dual 1-of-4 Decoder with 3-State Output
Description
The HD74AC539 contains two inpedendent decoders. Each accepts two Address (A0, A1) input signals and
decodes them to select one of four mutually exclusive outputs. A polarity control input (P) determines
whether the outputs are active HIGH (P = L) or active LOW (P = H). An active LOW input Enable (E) is
available for data demultiplexing; data is routed to the selected output in non-inverted form in the active
LOW mode or in inverted form in the active HIGH mode. A HIGH signal on the active LOW Output
Enable (OE) input forces the 3-state outputs to the high impedance state.
Feature
• Outputs Source/Sink 24 mA
1 page  
HD74AC539
AC Characteristics: HD74AC539
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
E to On
5.0
Propagation delay
t PHL
3.3
E to On
5.0
Propagation delay
t PLH
3.3
P to On
5.0
Propagation delay
t PHL
3.3
P to On
5.0
Propagation delay
t ZH
3.3
OE to On
5.0
Propagation delay
t ZL
3.3
OE to On
5.0
Propagation delay
t HZ
3.3
OE to On
5.0
Propagation delay
t LZ
3.3
OE 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 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
1.0 —
Max
15.0
10.0
15.0
10.0
14.5
9.5
13.5
9.0
16.0
11.5
16.0
11.5
10.0
8.0
9.5
7.5
11.5
9.5
10.5
8.5
Ta = –40°C to +85°C
CL = 50 pF
Min Max
1.0 18.0
1.0 12.0
1.0 18.0
1.0 12.0
1.0 16.5
1.0 11.0
1.0 15.5
1.0 11.5
1.0 19.0
1.0 12.5
1.0 19.0
1.0 12.5
1.0 11.5
1.0 9.0
1.0 11.0
1.0 8.5
1.0 13.0
1.0 10.5
1.0 12.0
1.0 9.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Capacitance
Item
Input capacitance
Power dissipation capacitance
Symbol
CIN
CPD
Typ
4.5
60
Unit
pF
pF
Condition
VCC = 5.5 V
VCC = 5.0 V
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet HD74AC539.PDF ] | |
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