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HT82K28 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

Part # HT82K28
Description  Win98 Keyboard Encoder
Download  20 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT82K28 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc

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Electrical Characteristics
Ta=25°C
Symbol
Parameter
Test Conditions Min. Typ. Max. Unit
VDD
Operating Voltage
¾
4.75
5
5.25
V
IDD
Operating Current
¾¾
25
mA
VIL
Input Low Voltage (C0~C7)
¾
0
¾
0.6
V
Input Low Voltage (DATA, CLOCK)
¾
0
¾
0.6
V
VIH
Input High Voltage
¾
3.5
¾
VDD
V
VOL
Output Low Voltage (R0~R18)
IOL=10mA
¾¾
0.5
V
Output Low Voltage (DATA, CLOCK)
IOL=15mA
¾¾
0.5
V
Rph
Internal Pull-high Resistance (C0~C7)
¾
510
20
kW
Internal Pull-high Resistance
(CLOCK, DATA)
¾
25
15
kW
fSYS
System Clock
¾¾
4
¾
MHz
HT82K28A
3
February 16, 2000


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