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參數資料
| 型號： | KK74HCT138AD |
| 廠商： | KODENSHI CORP. |
| 英文描述： | Replacement for Texas Instruments part number 5495/BDA. Buy from authorized manufacturer Rochester Electronics. |
| 中文描述： | 1 - 8解碼器/解復用器高性能硅柵CMOS |
| 文件頁數： | 1/6頁 |
| 文件大小： | 170K |
| 代理商： | KK74HCT138AD |
TECHNICAL DATA
K K
74HCT138A
1-of-8 Decoder/Demultiplexer
High-Performance Silicon-Gate CMOS
The
KK
74HCT138A is identical in pinout to the LS/ALS138. The
KK
74HCT138A may be used as a level converter for interfacing TTL or
NMOS outputs to High Speed CMOS inputs.
The
KK
74HCT138A decodes a three-bit Address to one-of-eight
active-lot 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
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.
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0
μ
A
demultiplexing
function
is
ORDERING INFORMATION
KK
74HCT138AN Plastic
KK
74HCT138AD SOIC
T
A
= -55
°
to 125
°
C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
CS1 CS2 CS3
A2 A1 A0
Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
X X H
X H X
L X X
X X X
X X X
X X X
H H H H H H H H
H H H H H H H H
H H H H H H H H
H L L
H L L
H L L
H L L
L L L
L L H
L H L
L H H
L H H H H H H H
H L H H H H H H
H H L H H H H H
H H H L H H H H
H L L
H L L
H L L
H L L
H L L
H L H
H H L
H H H
H H H H L H H H
H H H H H L H H
H H H H H H L H
H H H H H H H L
H = high level (steady state)
L = low level (steady state)
X = don’t care
1
相關PDF資料 |
PDF描述 |
|---|---|
| KK74HCT138AN | 1-of-8 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT139A | Dual 1-of-4 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT139AD | Dual 1-of-4 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT139AN | Dual 1-of-4 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT14A | Hex Schmitt-Trigger Inverter High-Performance Silicon-Gate CMOS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| KK74HCT138AN | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:1-of-8 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT139A | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Dual 1-of-4 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT139AD | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Dual 1-of-4 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT139AN | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Dual 1-of-4 Decoder/Demultiplexer High-Performance Silicon-Gate CMOS |
| KK74HCT14A | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Hex Schmitt-Trigger Inverter High-Performance Silicon-Gate CMOS |
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