HT82K28A(2000) データシートの表示（PDF） - Holtek Semiconductor

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HT82K28A
(Rev.:2000)

Win98 Keyboard Encoder

Holtek Semiconductor 

HT82K28A

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

¾

¾2

5 mA

Input Low Voltage (C0~C7)

VIL

Input Low Voltage (DATA, CLOCK)

¾

0

¾ 0.6 V

¾

0

¾ 0.6 V

VIH

Input High Voltage

¾

3.5 ¾ VDD V

Output Low Voltage (R0~R18)

VOL

IOL=10mA

Output Low Voltage (DATA, CLOCK) IOL=15mA

¾ ¾ 0.5 V

¾ ¾ 0.5 V

Internal Pull-high Resistance (C0~C7)

¾

Rph

Internal Pull-high Resistance

(CLOCK, DATA)

¾

5 10 20 kW

2

5 15 kW

fSYS

System Clock

¾

¾ 4 ¾ MHz

3

February 16, 2000

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