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PCM-3780 User Manual 26
Appendix A Specifications
A.1 Programmable Counter
A.2 Digital Input/Output
Channels 2
Resolution
16-bit
Compatibility
TTL level
Max. Input
Frequency
20 MHz
Clock Input
Low
0.8 V max.
High
2.0 V min.
Gate Input
Low
0.8 V max.
High
2.0 V min.
Counter Output
Low
0.4 V max.@ +8.0mA (sink)
High
2.4 V min.@ -0.4mA(source)
Channels
24 (8255Mode 0)
Input Voltage
Low
0.4V max.
High
2.4 V min.
Input Load
Low
0.4 V max.@ -0.2mA
High
2.7 V min.@20µA
Output Voltage
Low
0.5 V max.@+24 mA
High
2.4 V min.@-15 mA