參數(shù)資料
型號(hào): HD74BC645A
廠商: Hitachi,Ltd.
英文描述: Octal Bus Transceivers With 3 State Outputs(三態(tài)輸出的八總線收發(fā)器)
中文描述: 八路總線收發(fā)器與三態(tài)輸出(三態(tài)輸出的八總線收發(fā)器)
文件頁(yè)數(shù): 6/9頁(yè)
文件大小: 43K
代理商: HD74BC645A
HD74BC645A
6
Test Circuit
C =
50 pF
Input
Output
500
DIR
A1
B1
V
CC
Pulse
Generator
Z = 50
V
CC
S
450
*4
S1
50
Scope
OPEN
7V
G
Notes:
1.
2.
3.
4.
C
L
includes probe and jig capacitance.
A2-B2 to A8-B8 are identical to above load circuit.
S1: Input-Output change switch.
Open: t
PLH
, t
PHL
, t
ZH
t
HZ
7 V: t
ZL
, t
LZ
Waveforms-1
t
PLH
t
PHL
V
OH
V
OL
Input
Output
10 %
0 V
1.5 V
90 %
1.5 V
t
r
t
f
1.5 V
90 %
1.5 V
3 V
10 %
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