R4=3.3KΩ
4) Signal level |
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• | LOW | : | 0 V to +0.8 V |
• | HIGH | : | +2.4 V to 5.0 V |
5)Interface circuit
a)Receiving circuit
DATA STROBE and INPUT PRIME
+5V
R1 | 74LS19 or equivalent |
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R2 |
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| C |
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| Signal name | R1 | R2 | C |
| DATA STROBE | 3.3KΩ | 100Ω | 560pF |
| INPUT PRIME | 3.3KΩ | 1KΩ | 0.001∝F |
DATA
+5V | R3=3.3KΩ |
R3
74LS374 or equivalent
b) Sending circuit
+5V
R4
7407 or equivalent (Open collector)
40930701TH DRAFT Vesion | 186 / |