KPCI3140_DocSpec.pdf part of Keithley KPCI3140 DocSpec KPCI3140_DocSpec.pdf, Keithley KPCI KPCI3140

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KPCI-3140 Specs
Features Summary
Digital I/O
Port Lines per port Type Interrupt on Bit Change Detection SSR Drive
A, B, C 8 bidirectional Level-sensitive No Yes
D 8 bidirectional Level-sensitive Yes Yes

Counter/Timers
Channels Resolution Maximum Clock Frequency External Clock
Counter/Timer 8 16 20MHz Yes
Interval Timers 4 24 20MHz No

Digital I/O
Ports A, B, C Port D
Number of lines 8 bidirectional per port 8 bidirectional
Inputs
Input type Level-sensitive Level-sensitive
High-level input voltage 2.0V minimum 2.0V minimum
Low-level input voltage 0.8V maximum 0.8V maximum
Minimum pulse width Not applicable 66ns high and low*
Outputs
Output driver high voltage 2.4V minimum (IOH = -15mA) 2.4V minimum (IOH = -15mA)
Output driver low voltage 0.5V maximum (IOL = 12mA) 0.5V minimum (IOL = 12mA)
*The minimum pulse width applies only to interrupt-on-change detection. Pulses less than the minimum may not be detected as a
change.

Counter/Timer
Number of counter/timer channels 8
Clock Inputs
Threshold voltage 0.98V
Input sensitivity