Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in
italic text
are guaranteed by design.
Digital input / output
Table 1. Digital I/O specifications
Output 74ABT244A
Input 74ACT373
Configuration
8 banks of 8, 8 banks of 4, programmable by bank as input or output
Number of I/O
96
Output high
2.0 volts min @ -24 mA
Output low
0.5 volts max @ 64 mA
Input high
2.0 volts min, 5.5 volts max
Input low
0.8 volts max, -0.5 volts absolute min
Source current
Maximum = 24 mA per output
Sink current
Maximum = 64 mA per output
Power up / reset state
Input mode (10 K ohm pulled-up by default)
Power
Table 2. Power specifications
Parameter Conditions
Specification
USB +5 V input voltage range
4.75V min. to 5.25V max.
USB +5 V supply current
All modes of operation
<100 mA
External power input
6.0 VDC to 12.5 VDC (9 VDC power
supply provided)
External power supply (included)
MCC p/n CB-PWR-9V3A
9 V ± 10% @ 3 A
6.0 V > Vext or Vext > 12.5 V
PWR LED = Off (power fault)
Voltage supervisor limits - PWR LED
6.0 V < Vext < 12.5 V
PWR LED = On
Power supply current
2.6 A max
User 5 V output voltage range
Available at 5 V screw terminals
(25, 77 and 103)
4.0 V min., 5.25 V max.
User 5 V output current available
Total from all 5 V screw
terminals
50 mA max
External power output
Table 3. External power output specifications
Parameter Conditions
Specification
External power output - current range
Note 1
4.0 A max. @ 25 °C
External power output - voltage range
The input voltage minus the output voltage at the
daisy chain output
0.5 V max
Compatible cable(s) for daisy chain
C-MAPWR-x
x = 2, 3, or 6 feet
4-1
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