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參數資料
| 型號： | HD74HC138 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 3-to-8-line Decoder/Demultiplexer |
| 中文描述： | 3至8線解碼器/解復用器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 51K |
| 代理商： | HD74HC138 |
HD74HC138
3-to-8-line Decoder/Demultiplexer
Description
The HD74HC138 has 3 binary select inputs (A, B and C). If the device is enabled these inputs determine
which one of the eight normally high outputs will go low. Two active low and one active high enables (G
1
,
G
2A
and G
2B
) are provided to ease the cascading of decoders.
Features
High Speed Operation: t
pd
(A, B, C to Y) = 16.5 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 V to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Function Table
Inputs
Enable
Select
Outputs
G1
G
2A
X
G
2B
H
C
B
A
Y
0
H
Y
1
H
Y
2
H
Y
3
H
Y
4
H
Y
5
H
Y
6
H
Y
7
H
X
X
X
X
X
H
X
X
X
X
H
H
H
H
H
H
H
H
L
X
X
X
X
X
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
L
H
H
H
H
H
H
H
L
L
L
H
L
H
H
L
H
H
H
H
H
H
L
L
L
H
H
H
H
H
L
H
H
H
H
H
L
L
H
L
L
H
H
H
H
L
H
H
H
H
L
L
H
L
H
H
H
H
H
H
L
H
H
H
L
L
H
H
L
H
H
H
H
H
H
L
H
H
L
L
H
H
H
H
H
H
H
H
H
H
L
相關PDF資料 |
PDF描述 |
|---|---|
| HD74HC139 | Dual 2-to-4-line Decoders/Demultiplexers |
| HD74HC147 | Dual 4-Input Positive-NAND Gates 14-CDIP -55 to 125 |
| HD74HC148 | Dual 4-Input Positive-NAND Gates 20-LCCC -55 to 125 |
| HD74HC149 | Dual 4-Input Positive-NAND Gates 14-CDIP -55 to 125 |
| HD74HC14FH | Hex Schmitt-trigger Inverters |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HD74HC138FP | 制造商:Renesas Electronics Corporation 功能描述:Decoder/Demultiplexer Single 3-to-8 16-Pin SOP |
| HD74HC138FP-E | 制造商:Renesas Electronics Corporation 功能描述:Logic, 74HC series, SOP-16 |
| HD74HC138P-E | 制造商:Renesas Electronics Corporation 功能描述: |
| HD74HC138-T-ELL-E | 制造商:Renesas Electronics Corporation 功能描述: |
| HD74HC139FP-E | 制造商:Renesas Electronics Corporation 功能描述: |
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