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HT6542B Просмотр технического описания (PDF) - Holtek Semiconductor
Номер в каталоге
Компоненты Описание
производитель
HT6542B
Keyboard Controller with PS/2
Holtek Semiconductor
HT6542B Datasheet PDF : 7 Pages
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HT6542B
D.C. Characteristics
Symbol
Parameter
Test Condition
V
DD
Condition
V
DD
Operating Voltage
—
–
I
DD
Operating Current
5V
F
OSC
=8MHz
No load
V
IL
Input Low Voltage
—
—
V
IH
Input High Voltage
—
—
P10~P16, KBCI, KBDI,
D0~D7, RC, A20, P22, P23,
V
OL
KB-OBFO, MS-OBFO
5V V
OL
=0.5V
Output Low Voltage
I
OL
=6mA
V
OH
D0~D7, KB-OBFO, MS-OBFO,
KBCO, KBDO, A20, RC
Output High Voltage
5V V
OH
=4.5V
I
OH
=0.3mA
R
PH1
P10~P16, KBD-INH
Pull-High Resistance
—
—
R
PH2
KBCI, KBDI, CS, RD, A0,
WR Pull-High Resistance
—
—
Min. Typ. Max. Unit
4.75
5
5.25
V
—
4
6
mA
–0.5 —
0.8
V
2
—
V
DD
V
—
—
0.5
V
4.5
—
—
V
10
20
30
ΚΩ
30
50
70
ΚΩ
4
30th Nov ’95
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