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| 型号： | SN74ALS251NE4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | ALS SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDIP16 |
| 封装： | PLASTIC, DIP-16 |
| 文件页数： | 1/17页 |
| 文件大小： | 693K |
| 代理商： | SN74ALS251NE4 |
SN54ALS251, SN74ALS251
1OF8 DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS215A APRIL 1982 REVISED DECEMBER 1994
Copyright
1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
3-State Version of the ′ALS151
3-State Outputs Interface Directly With
System Bus
Perform Parallel-to-Serial Conversion
Complementary Outputs Provide True and
Inverted Data
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
description
These data selectors/multiplexers contain full
binary decoding to select one-of-eight data
sources and feature controlled complementary
3-state outputs.
The 3-state outputs can interface with and drive
data lines of bus-organized systems. With all but
one of the common outputs disabled (at the
high-impedance state), the low impedance of the
signal-enabled output drives the bus line to a high
or low logic level. Both outputs are controlled by
the output-enable (OE) input. The outputs are
disabled when OE is high.
The SN54ALS251 is characterized for operation
over the full military temperature range of 55
°C
to 125
°C. The SN74ALS251 is characterized for
operation from 0
°C to 70°C.
FUNCTION TABLE
INPUTS
OUTPUTS
SELECT
OE
OUTPUTS
C
B
A
OE
Y
W
X
H
Z
L
LL
L
D0
L
LHL
D1
L
HL
L
D2
L
HH
L
D3
H
LL
L
D4
H
LHL
D5
H
HL
L
D6
H
L
D7
D0, D1, . . . D7 = the level of the respective D input
SN54ALS251 ...J PACKAGE
SN74ALS251 ...D OR N PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
D5
D6
NC
D7
A
D1
D0
NC
Y
W
SN54ALS251 . . . FK PACKAGE
(TOP VIEW)
D2
D3
NC
C
B
D4
OE
GND
NC
NC No internal connection
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
D3
D2
D1
D0
Y
W
OE
GND
VCC
D4
D5
D6
D7
A
B
C
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74ALS251NS | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| SN74ALS251NSR | 功能描述:编码器、解码器、复用器和解复用器 1-of-8 Data Slctr/ Mltplxr W/3-St Otpt RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74ALS251NSRE4 | 功能描述:编码器、解码器、复用器和解复用器 1-of-8 Data Slctr/ Mltplxr W/3-St Otpt RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74ALS251NSRG4 | 功能描述:编码器、解码器、复用器和解复用器 1 of 8 Data SELECTR Mltplxrs RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| SN74ALS253D | 功能描述:编码器、解码器、复用器和解复用器 Dual 1-of-4 Data Slct/Mltpx W/3St Otp RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
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