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參數(shù)資料
| 型號： | IN74AC251N |
| 廠商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |
| 中文描述： | 8輸入數(shù)據(jù)選擇器/多路3態(tài)輸出的高速硅柵CMOS |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 167K |
| 代理商： | IN74AC251N |
TECHNICAL DATA
336
8-Input Data Selector/Multiplexer
with 3-State Outputs
High-Speed Silicon-Gate CMOS
The IN74AC251 is identical in pinout to the LS/ALS251,
HC/HCT251. The device inputs are compatible with standard CMOS
outputs; with pullup resistors, they are compatible with LS/ALS
outputs.
The device selects one of the eight binary Data Inputs, as
determined by the Address Inputs. The Output Enable pin must be at a
low level for the selected data to appear at the outputs. If Output
Enable is high, the Y and the Y outputs are in the high-impedance
state. This 3-State feature allows the IN74AC251 to be used in bus-
oriented systems.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
μ
A; 0.1
μ
A @ 25
°
C
High Noise Immunity Characteristic of CMOS Devices
Outputs Source/Sink 24 mA
IN74AC251
ORDERING INFORMATION
IN74AC251N Plastic
IN74AC251D SOIC
T
A
= -40
°
to 85
°
C for all
packages
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Outputs
A2
A1
A0
Output
Enable
Y
Y
X
X
X
H
Z
Z
L
L
L
L
D0
D0
L
L
H
L
D1
D1
L
H
L
L
D2
D2
L
H
H
L
D3
D3
H
L
L
L
D4
D4
H
L
H
L
D5
D5
H
H
L
L
D6
D6
H
H
H
L
D7
D7
D0,D1...D7=the level of the respective D
input
Z = high-impedance state
X = don’t care
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
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| IN74AC253 | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Speed Silicon-Gate CMOS |
| IN74AC253D | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Speed Silicon-Gate CMOS |
| IN74AC253N | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Speed Silicon-Gate CMOS |
| IN74AC257 | Quad 2-Input Date Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IN74AC253 | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Speed Silicon-Gate CMOS |
| IN74AC253D | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Speed Silicon-Gate CMOS |
| IN74AC253N | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Speed Silicon-Gate CMOS |
| IN74AC257 | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Quad 2-Input Date Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |
| IN74AC257D | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Quad 2-Input Date Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS |
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