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LS148 数据表(PDF) 6 Page - Texas Instruments

部件名 LS148
功能描述  10-LINE TO 4-LINE AND 8-LINE TO 3-LINE PRIORITY ENCODERS
PDF  24 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

LS148 数据表(HTML) 6 Page - Texas Instruments

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SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10LINE TO 4LINE AND 8LINE TO 3LINE PRIORITY ENCODERS
SDLS053B − OCTOBER 1976 − REVISED MAY 2004
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
VCC
Input
Req
0 input (’148): Req = 2 kΩ NOM
All other inputs: Req = 4 kΩ NOM
TYPICAL OF ALL OUTPUTS
VCC
Output
’147, ’148
85 Ω NOM
EQUIVALENT OF ALL INPUTS
VCC
Input
’LS147, ’LS148
TYPICAL OF ALL OUTPUTS
Output
VCC
120
Ω NOM
Req
’LS148 inputs 1–7: Req = 9 kΩ NOM
All other inputs: Req = 18 kΩ NOM



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