Measurement Computing USB-DIO96H-50 - Manual (Page 14)

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Chapter 4
Specifications
This specification applies to revision 2 hardware and later
This specification covers revision 2 of the USB-DIO96H/50 hardware, which uses a 5 V power supply.
Revision 1 of the USB-DIO96H/50 hardware was designed with a 9 V power supply and daisy chained hub. For
revision 1 hardware specifications, refer to
www.mccdaq.com/PDFs/Manuals/USB-DIO96H-50_R1.pdf .
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Digital input/output
Table 1. Digital I/O specifications
Parameter Specification
Output 74ABT244A
Input 74ACT373
Configuration Eight banks of 8, eight banks of 4, programmable by bank as input or output
Pull-up/pull-down High impedance pull-up/pull-down selectable via DIP switch for each digital input port.
Number of I/O 96
Output high 2.0 V min @ –24 mA
Output low 0.5 V max @ 64 mA
Input high 2.0 V min, 5.5 V max
Input low 0.8 V max, –0.5 V absolute min
Input impedance 47 kΩ (series resistance)
Source current 24 mA per output max
Sink current 64 mA per output max
Power up state Input mode
Debounce mode Debouncing option available through firmware that samples all inputs eight times over a
specified interval and latches out the input state only when eight consecutive samples
are identical (all 0s or all 1s). Available debouncing intervals are 1 ms, 2 ms, 5 ms,
10 ms, 20 ms, 50 ms, 100 ms, 200 ms, and 400 ms.
Debounce interval accuracy +0% / –12.5%