參數(shù)資料
型號(hào): 74HCT138D-T
英文描述: 3-To-8-Line Demultiplexer
中文描述: 3至8線復(fù)用器
文件頁(yè)數(shù): 9/16頁(yè)
文件大?。?/td> 78K
代理商: 74HCT138D-T
2002 May 15
9
Philips Semiconductors
Product specification
Bus buffer/line driver; 3-state
74HC1G126; 74HCT1G126
handbook, full pagewidth
open
GND
VCC
VCC
VI
VO
MNA232
D.U.T.
CL
RT
RL =
1000
PULSE
GENERATOR
S1
Fig.7 Load circuitry for switching times.
Definitions for test circuit:
C
L
= Load capacitance including jig and probe capacitance (see “AC characteristics” for values).
R
L
= Load resistance (see “AC characteristics” for values).
R
T
= Termination resistance should be equal to the output impedance Z
o
of the pulse generator.
TEST
S
1
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
open
V
CC
GND
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