Data Translation DT9835, User Manual

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Specifications
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Table 6 lists the specifications for the digital output subsystem.
Table 7 lists the power, physical, and environmental specifications for
the DT9835 function module.
Table 6: DOUT Subsystem Specifications
Feature Specifications
Number of lines 64 shared digital I/O lines
Termination 22
Ω
series resistor
Output driver Open collector (5 V)
Output driver high voltage 100 k
Ω
Pullup to +5V_I
a
a. You can drive the +5V_I isolated output pin from an external power supply. This will
allow the last digital output value to be latched to the input stage; therefore, if the
power is reduced by the host, the digital output values will not change. Current
requirements are 50 mA plus load.
Output driver low voltage 0.6 V maximum (IOL = 12 mA)
Back EMF diodes Yes