User`s manual

Configuring the Agilent E1330B Digital I/O Module 29
Chapter 2
Typical Connection
Figure 2-11 shows a typical driver/receiver connection for data transfer.
The FLG, PIR, and STS lines have a discrete resistive pull-up network. The
data lines do not have a discrete resistive pull-up, but can use an internal
pull-up in the 75ALS160. The internal pull-up requires that the data lines
sink 3.2 mA to pull the line to less than 0.4 V. The I/O
, CTL, and RES lines
are open collector, and require external pull-up to logic high.
Figure 2-11. Typical Driver/Receiver Connections