Measurement Specialties PCI-DIO24 manual Specifications, Power consumption, Digital input / output

Chapter 5

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Power consumption

Table 1. Power consumption specifications

+5V operating

240 typical, 350 max

Digital input / output

	Table 2. Digital input / output specifications
Digital type	82C55
Configuration	2 banks of 8, 2 banks of 4, programmable by bank as input or output
Number of channels	24 I/O
Output high	3.7 volts min @ -2.5 mA
Output low	0.4 volts max @ 2.5 mA
Input high	2.2 volts min, 5.3 volts absolute max
Input low	0.8 volts max, -0.3 volts absolute min
Power-up / reset state	Input mode (high impedance)
Interrupts	INTA# - mapped to IRQn via PCI BIOS at boot-time
Interrupt enable	External (IR ENABLE, active low, disabled by default through internal resistor to
	TTL high) and programmable through PCI9052;
	0 = disabled, 1 = enabled (default)
Interrupt sources	External source (IR INPUT), polarity programmable through PCI9052;
	1 = active high, 0 = active low (default)

Environmental

	Table 3. Environmental specifications
Operating temperature range	0 to 50 °C
Storage temperature range	-20 to 70 °C
Humidity	0 to 90% non-condensing

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