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參數(shù)資料
| 型號： | IN74HC251N |
| 廠商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | 8-INPUT DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS |
| 中文描述： | 8輸入數(shù)據(jù)選擇器/ 3多路態(tài)輸出 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 148K |
| 代理商： | IN74HC251N |
IN74HC251A
1
8-I
NPUT
D
ATA
S
ELECTOR
/M
ULTIPLEXER
WITH
3-S
TATE
O
UTPUTS
High-Performance Silicon-Gate CMOS
The IN74HC251 is identical in pinout to the LS/ALS251. The
device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LS/ALSTTL 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 IN74HC251 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
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
IN74HC251N Plastic
IN74HC251D SOIC
T
A
= -55
°
to 125
°
C for all
packages
FUNCTION TABLE
Inputs
A0
OE
X
H
L
L
H
L
L
L
H
L
L
L
H
L
L
L
H
L
D0,D1...D7=the level of the
respective D input
Z = high-impedance state
X = don’t care
Outputs
Y
Z
D0
D1
D2
D3
D4
D5
D6
D7
A2
X
L
L
L
L
H
H
H
H
A1
X
L
L
H
H
L
L
H
H
Y
Z
D0
D1
D2
D3
D4
D5
D6
D7
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
PIN ASSIGNMENT
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| IN74HC273A | OCTAL D FLIP-FLOP WITH COMMON CLOCK AND RESET |
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| IN74HC273AN | OCTAL D FLIP-FLOP WITH COMMON CLOCK AND RESET |
| IN74HC374ADW | Octal 3-State Noninverting D Flip-Flop (High-Performance Silicon-Gate CMOS) |
| IN74HC374AN | Octal 3-State Noninverting D Flip-Flop (High-Performance Silicon-Gate CMOS) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IN74HC253A | 制造商:IKSEMICON 制造商全稱:IK Semicon Co., Ltd 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| IN74HC253AD | 制造商:IKSEMICON 制造商全稱:IK Semicon Co., Ltd 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| IN74HC253AN | 制造商:IKSEMICON 制造商全稱:IK Semicon Co., Ltd 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| IN74HC257 | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| IN74HC257A | 制造商:IKSEMICON 制造商全稱:IK Semicon Co., Ltd 功能描述:Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
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