Oki OKIPAGE24DX Maintenance Manual page 167

4) Signal level
• LOW
• HIGH
5) Interface circuit
a) Receiving circuit
DATA STROBE and INPUT PRIME
DATA BIT-1 to 8
b) Sending circuit
40930701TH DRAFT Vesion
: 0 V to +0.8 V
: +2.4 V to 5.0 V
+5V
R1
R2
Signal name
DATA STROBE
INPUT PRIME
+5V
R3
+5V
7407 or equivalent (Open collector)
74LS19 or equivalent
C
R1 R2
3.3K 100
3.3K 1K
R3=3.3K
74LS374 or equivalent
R4=3.3K
R4
C
560pF
0.001 F
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