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PDF HD74LVC139 Data sheet ( Hoja de datos )
| Número de pieza | HD74LVC139 | |
| Descripción | Dual 2-to-4-line Decoders / Demultiplexers | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74LVC139
Dual 2-to-4-line Decoders / Demultiplexers
ADE-205-069B(Z)
Rev.2
September 1995
Description
The HD74LVC139 has two independent two-to-four-line decoders each with a single active low enable
input in a 16 pin package. Data on the select inputs cause one of the four normally high outputs to go low.
Low voltage and high speed operation is suitable at the battery drive product (note type personal computer)
and low power consumption extends the life of a battery for long time operation.
Features
• VCC = 2.0 V to 5.5 V
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• High output current ±24 mA (@VCC = 3.0 V to 5.5 V)
Function Table
Input
Enable
Select
GB
HX
LL
LL
LH
LH
H : High level
L : Low level
X : Immaterial
A
X
L
H
L
H
Outputs
Y0 Y1 Y2 Y3
HHHH
L HHH
HL HH
HHL H
HHHL
1 page  
HD74LVC139
Waveforms
Input
In phase output
10 %
tr
90 %
Vref
tPLH
Vref
tPHL
tf
90 %
Vref
10 %
tPHL
Vref
tPLH
VIH
GND
VOH
VOL
Out of
phase output
Vref Vref
VOH
VOL
Symbol
VCC = 2.7 V,
3.3±0.3 V
VCC = 5.0±0.5 V
VIH 2.7 V
VCC
Vref 1.5 V 50%VCC
Notes:
1. tr = 2.5 ns, tf = 2.5 ns
2. Input waveform : PRR = 10 MHz, duty cycle 50%
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet HD74LVC139.PDF ] | |
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