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SN74AS850A PDF预览

SN74AS850A

更新时间: 2024-10-01 12:22:31
品牌 Logo 应用领域
德州仪器 - TI 复用器输出元件
页数 文件大小 规格书
11页 167K
描述
1 OF 16 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

SN74AS850A 数据手册

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ꢀꢁ ꢂꢃ ꢄꢀ ꢅ ꢆ ꢇꢄ ꢈꢉ ꢀꢁꢂ ꢃꢄ ꢀ ꢅꢆ ꢊꢋ  
ꢊ ꢉꢌ ꢍ ꢉꢊ ꢎ ꢉ ꢏꢄꢐꢄꢉꢀ ꢑꢒ ꢑꢓꢐꢌ ꢔꢀꢕ ꢖꢗ ꢒꢐ ꢘꢙ ꢒꢑ ꢚꢑ ꢔ ꢀ  
ꢛ ꢘꢐ ꢜꢉ ꢝ ꢞꢀꢐꢄꢐ ꢑꢉ ꢌ ꢗꢐ ꢙꢗ ꢐꢀ  
SDAS154A − D2822, DECEMBER 1983 − REVISED JANUARY 1990  
4-Line to 1-Line Data Selectors/Multiplexers  
That Can Select 1 of 16 Data Inputs Typical  
Applications:  
SN74AS850A, SN74AS851B . . . N PACKAGE  
(TOP VIEW)  
Boolean Function Generators  
Parallel-to-Serial Converters  
Data Source Selectors  
V
D8  
D9  
D10  
D11  
D12  
1
28  
27  
26  
25  
24  
23  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
GY  
G
CC  
2
3
4
Cascadable to n-Bits  
5
3-State Bus Driver Outputs  
6
’AS850A Offers Clocked Selects; ’AS851B  
7
22 D13  
21 D14  
20 D15  
Offers Enable-Controlled Selects  
8
Has a Master Output Control (G) for  
Cascading and individual Output Controls  
(GY, GW) for Each Output  
9
10  
11  
12  
13  
14  
19  
Y
18 S0  
17 S1  
16 S2  
15 S3  
GW  
Package Option Includes 600-mil Standard  
CLK/SC  
Plastic DIPs  
W
GND  
Dependable Texas Instruments Quality and  
Reliability  
CLK for ’AS850A or SC for ’AS851B  
description  
These four-line to one-line data selectors/multiplexers provide full binary decoding to select one-of-sixteen data  
sources with complementary Y and W outputs. The ’AS850A has a clock-controlled select register allowing for  
a symmetrical presentation of the select inputs to the decoder while the ’AS851B has an enable-controlled select  
register allowing the user to select and hold one particular data line.  
A buffered group of output controls (G, GY, GW) can be used to place the two outputs in either a normal logic  
(high or low logic level) or a high-impedance state. In the high-impedance state, the outputs neither load nor  
drive the bus lines significantly. The high-impedance third state and increased drive provide the capability to  
drive the bus lines in a bus-organized system without the need for interface or pullup components.  
The output controls do not affect the internal operations of the data selector/multiplexer. New data can be setup  
while the outputs are in the high-impedance state.  
The SN74AS850A and SN74AS851B are characterized for operation from 0°C to 70°C.  
ꢐꢫ  
Copyright 1990, Texas Instruments Incorporated  
ꢧ ꢫ ꢨ ꢧꢠ ꢡꢵ ꢣꢢ ꢦ ꢮꢮ ꢬꢦ ꢤ ꢦ ꢥ ꢫ ꢧ ꢫ ꢤ ꢨ ꢰ  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77001  

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