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PDF U74HC138 Data sheet ( Hoja de datos )
| Número de pieza | U74HC138 | |
| Descripción | 3-TO-8 LINE DECODERS / DEMULTIPLEXERS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
U74HC138
3-TO-8 LINE DECODERS /
DEMULTIPLEXERS
DESCRIPTION
The U74HC138 decodes a three-bit Address to 1-of-8 active-low
outputs.
This device features three Chip Select inputs, two active-low
and one active-high, to facilitate the demultiplexing, cascading,
and chip-selecting functions.
The demultiplexing function is accomplished by using the
address inputs to select the desired device output. One of the Chip
Selects is used as a data input while the other Chip Selects are
held in their active states.
FEATURES
* Operate from 2.0V ~ 6.0V
* Low Input Current: 100nA Max
* Low Quiescent Current: 8μA Max
* Typ tPD=15ns
* Output Drive:4mA @ 5V
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74HC138L-D16-T
U74HC138G-D16-T
U74HC138L-S16-T
U74HC138G-S16-T
U74HC138L-S16-R
U74HC138G-S16-R
U74HC138L-R16-T
U74HC138G-R16-T
U74HC138L-R16-R
U74HC138G-R16-R
U74HC138L-P16-T
U74HC138G-P16-T
U74HC138L-P16-R
U74HC138G-P16-R
Package
DIP-16
SOP-16
SOP-16
SSOP-16
SSOP-16
TSSOP-16
TSSOP-16
CMOS IC
DIP-16
SOP-16
SSOP-16
TSSOP-16
Packing
Tube
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 6
QW-R502-614.E
http://www.Datasheet4U.com
1 page  
U74HC138
CMOS IC
SWITCHING CHARACTERISTICS (TA=25°C, CL=50pF, see Test Circuit and Waveforms)
PARAMETER
Propagation delay from input
(An) to output( Yn )
Propagation delay from input
(E3) to output( Yn )
Propagation delay from input
( En ) to output( Yn )
Output Transition Time
SYMBOL
tPLH/tPHL
tPLH/tPHL
tPLH/tPHL
tTLH/tTHL
TEST CONDITIONS
VCC =2.0V
VCC =4.5V
VCC =6.0V
VCC =2.0V
VCC =4.5V
VCC =6.0V
VCC =2.0V
VCC =4.5V
VCC =6.0V
VCC =2.0V
VCC =4.5V
VCC =6.0V
MIN TYP MAX UNIT
67 180 ns
18 36 ns
15 31 ns
66 155 ns
18 31 ns
15 26 ns
66 155 ns
18 31 ns
15 26 ns
38 75 ns
8 15 ns
6 13 ns
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance
SYMBOL
TEST CONDITIONS
CPD No Load
MIN TYP MAX UNIT
85 pF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R502-614.E
http://www.Datasheet4U.com
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| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet U74HC138.PDF ] | |
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