Citizen Systems CBM-910 사용자 설명서

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DATA

VCC

3.3k

< HOST SIDE >

< PRINTER SIDE >

(HC04 or equivalent)

STB

ACK BUSY P.N.E.

OUTPUT SIGNAL

RESET

VCC

3.3k

100

102

471

(HC04 or equivalent)

VCC

3.3k

104

(HC04 or equivalent)

VCC

3.3k

(HC04 or equivalent)

(1)

Input signal level
All inputs are HCMOS level.  As the input side is pulled up with a resistance of 3.3
k

Ω, it can be used at TTL level.

TTL Level

HCMOS Level

“HIGH” level: 2.0 V MIN

“HIGH” level: 4.0 V MIN

“LOW” level: 0.8 V MAX

“LOW” level: 1.0 V MAX

(2)

Output signal level
Output signal level is held at TTL.

(3)

I/O conditions