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參數(shù)資料
| 型號： | KK74HC257AD |
| 廠商： | KODENSHI CORP. |
| 英文描述： | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| 中文描述： | 四2輸入數(shù)據(jù)選擇器/多路與三態(tài)輸出的高性能硅柵CMOS |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 169K |
| 代理商： | KK74HC257AD |
TECHNICAL DATA
K K
74HC257A
Quad 2-Input Data Selector/Multiplexer
with 3-State Outputs
High-Performance Silicon-Gate CMOS
ORDERING INFORMATION
KK
74HC257AN Plastic
KK
74HC257AD SOIC
T
A
= -55
°
to 125
°
C for all packages
The
KK
74HC257A is identical in pinout to the LS/ALS257. The
device inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
This device selects a (4-bit) nibble from either the A or B inputs as
determined by the Select input. The nibble is presented at the outputs in
noninverted from when the Output Enable pin is at a low level. A high
level on the Output Enable pin switches the outputs into the high-
impedance state.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
μ
A
High Noise Immunity Characteristic of CMOS Devices
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
Output
Enable
Select
Y0-Y3
H
X
Z
L
L
A0-A3
L
H
B0-B3
X=don’t care
Z = high-impedance state
A0-A3,B0-B3=the levels of the respective
Nibble Inputs
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| KK74HC257AN | Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| KK74HC258A | Replacement for Texas Instruments part number 54ACT11245/BLA. Buy from authorized manufacturer Rochester Electronics. |
| KK74HC273A | Octal D Flip-Flop with Common Clock and Reset |
| KK74HC27A | Triple 3-Input NOR Gate |
| KK74HC27AD | Triple 3-Input NOR Gate |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KK74HC257AN | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| KK74HC258A | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Quad 2-Input Data Selectors/Multiplexer with 3-State Outputs |
| KK74HC273A | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Octal D Flip-Flop with Common Clock and Reset |
| KK74HC27A | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Triple 3-Input NOR Gate |
| KK74HC27AD | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Triple 3-Input NOR Gate |
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