Conner CFP2105 series, Product Manual, Page: 61 / 90

Technical Reference Manual Page 53
Interface Physical Characteristics
5
Electrical Description
The paragraphs which follow describe the input and output electrical characteristics
of the drive.
Output Characteristics
The output drivers for Data, Parity, REQ and ACK are optionally active
negation. When they are set for active negation, they have three states:
asserted, negated and high impedance. The remainder of the signals have open
collector (drain) outputs. The drivers maintain a high impedance state during
power-on and power-off cycles. The driven signals have the following output
characteristics when measured at the drive connector:
Table 5-1
Active Negation Driver Output Signal Characteristics
Signal Characteristic Value
Signal Assertion 0.1 VDC to 0.5 VDC at 48 mA
Minimum Driver Output Capability 48 mA (sinking) at 0.5 VDC
Signal Negation 2.0 VDC to 3.24 VDC at 7 mA
3.0 VDC at 20 mA
Table 5-2
Open Collector Driver Output Signal Characteristics
Signal Characteristic Value
Signal Assertion 0.0 VDC to 0.5 VDC at 48 mA
Minimum Driver Output Capability 48 mA (sinking) at 0.5 VDC
Signal Negation 2.5 VDC to 5.25 VDC