Keithley KPCI-PIO24, User Manual, Page: 57 / 66

A-2 Specifications KPCI-PIO24 User’s Manual
Specifications for the KPCI-PIO24 board are listed in the following table.
Table A-1
KPCI-PIO24 Specifications
Number of
I/O Lines 24, bi-directional, non-isolated, TTL compatible
I/O interface The group of 24 I/O lines, emulates one 8255A chip configured for Mode O
External
connections One 37 pin ‘D’ type connector
Signal parameters Parameter Descriptions Min. Typ. Max. Unit
Data
V
IH
Voltage, Input High
2.0 - - V
lines
V
IL
Voltage, Input Low
- - 0.8 V
I
IH
Current, Input High, at
V
IN
= 2.7V
- - ±1 µA
I
IL
Current, Input Low, at
V
IN
= 0.5V
- - ±1 µA
I
OZH
High Impedance Output Current, at V
out
= High - - ±1 µA
I
OZL
High Impedance Output Current, at V
out
= Low - - ±1 µA
V
OH
Voltage, Output High, at
I
OH
= -8mA
2.4 3.3 - V
V
OH
Voltage, Output High, at
I
OH
= -15mA
2.0 3.0 - V
V
OL
Voltage, Output Low, at
I
OL
= 64mA
- 0.3 0.55 V
I
OL
Current, Output Low
- - 64 mA
I
OH
Current, Output High
- - -15 mA
I
OS
Short Circuit Current
-60 -120 -225 mA
I
OFF
Input/Output Power-Off Leakage
- - ±1 µA
Interrupt
I
IL
Current, Input Low
- - -100 µA
lines
I
IH
Current, Input High
- - -10 µA
V
OL
Voltage, Output Low, at
I
OL
= Maximum
- 0.3 0.5 V
V
OH
Voltage, Output High, at
I
OH
= Maximum
2.4 3.3 - V
I
OL
Current, Output Low
- - 16 mA
I
OH
Current, Output High
- - -3.2 mA
Power
Requirements
+5 VDC, 25 W maximum
Additional power
to external circuits
+5 VDC, 1A maximum, total
Environmental Operating temperature 0 to 50
°
C
Storage temperature 0 to 70
°
C
Relative humidity 20 to 90% noncondensing
Physical
dimensions 175 mm long
×
107 mm wide
×
19 mm high (6.88 in
×
4.2 in
×
0.75 in)
Weight 116 g (4.1 oz)