參數(shù)資料
型號(hào): CD74HC138SM
廠商: Texas Instruments, Inc.
英文描述: LM5575 SIMPLE SWITCHER® 75V, 1.5A Step-Down Switching Regulator; Package: TSSOP EXP PAD; No of Pins: 16
中文描述: 高速CMOS邏輯3至8線路解碼器/多路解復(fù)用器反相和非反相
文件頁(yè)數(shù): 3/7頁(yè)
文件大?。?/td> 43K
代理商: CD74HC138SM
3
H
L
L
H
L
L
H
H
H
H
L
H
H
H
H
L
L
H
L
H
H
H
H
H
H
L
H
H
H
L
L
H
H
L
H
H
H
H
H
H
L
H
H
L
L
H
H
H
H
H
H
H
H
H
H
L
NOTE: H = High Voltage Level, L = Low Voltage Level, X = Don’t Care
TRUTH TABLE CD74HC238, CD74HCT238
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
E2
E1
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
X
H
X
X
X
L
L
L
L
L
L
L
L
L
X
X
X
X
X
L
L
L
L
L
L
L
L
X
H
X
X
X
X
L
L
L
L
L
L
L
L
H
L
L
L
L
L
H
L
L
L
L
L
L
L
H
L
L
L
L
H
L
H
L
L
L
L
L
L
H
L
L
L
H
L
L
L
H
L
L
L
L
L
H
L
L
L
H
H
L
L
L
H
L
L
L
L
H
L
L
H
L
L
L
L
L
L
H
L
L
L
H
L
L
H
L
H
L
L
L
L
L
H
L
L
H
L
L
H
H
L
L
L
L
L
L
L
H
L
H
L
L
H
H
H
L
L
L
L
L
L
L
H
NOTE: H = High Voltage Level, L = Low Voltage Level, X = Don’t Care
TRUTH TABLE CD74HC138, CD74HCT138
INPUTS
OUTPUTS
ENABLE
ADDRESS
E3
E2
E1
A2
A1
A0
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
CD74HC138, CD74HCT138, CD74HC238, CD74HCT238
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