Digital I/O Specifications - Data Translation DT9828 User Manual

Digital I/O Specifications

Table 27 lists the specifications for the digital I/O subsystems on the DT9828 module.
Number of digital I/O lines
Number of ports
Digital Inputs
Input characteristics:
Input type:
Input high voltage:
Input low voltage:
Input voltage limits:
Digital Outputs
Output characteristics:
Current sink capability:
Output voltage range:
V range:
ext
Off state leakage:
Interrupt on change
Inputs clocked with sample clock
Software I/O selectable
Table 27: Digital I/O Specifications
Feature
8 (4 in, 4 out)
2 (4 bits each)
Level-sensitive
Optocoupler, 2.2 k
2.0 V minimum
0.8 V maximum
−
Open collector, 100 k
2 mA minimum, V
30 V maximum
30 V maximum
1
No
Yes
No
Specifications
Ω
in series with LED
5 V to +30 V (relative to Digital Input Return)
Ω
pull-up to V
(sat) = 0.35 V maximum
CE
μ
A maximum
Specifications
input
ext
101