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參數資料
| 型號： | KK74HC251A |
| 廠商： | KODENSHI CORP. |
| 英文描述： | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| 中文描述： | 8輸入數據選擇器/多路與三態輸出的高性能硅柵CMOS |
| 文件頁數： | 1/6頁 |
| 文件大小： | 174K |
| 代理商： | KK74HC251A |
TECHNICAL DATA
K K
74HC251A
8-Input Data Selector/Multiplexer
with 3-State Outputs
High-Performance Silicon-Gate CMOS
ORDERING INFORMATION
KK
74HC251AN Plastic
KK
74HC251AD SOIC
T
A
= -55
°
to 125
°
C for all packages
The
KK
74HC251A 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
KK
74HC251A 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
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
A2
A1
A0
OE
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
1
相關PDF資料 |
PDF描述 |
|---|---|
| KK74HC251AD | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| KK74HC251AN | 8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| KK74HC253A | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| KK74HC253AD | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| KK74HC253AN | Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| KK74HC251AD | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| KK74HC251AN | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:8-Input Data Selector/Multiplexer with 3-State Outputs High-Performance Silicon-Gate CMOS |
| KK74HC253A | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| KK74HC253AD | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
| KK74HC253AN | 制造商:KODENSHI 制造商全稱:KODENSHI KOREA CORP. 功能描述:Dual 4-Input Data Selector/Multiplexer with 3-State Otputs High-Performance Silicon-Gate CMOS |
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