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Peripheral Outputs
There are 8 peripheral outputs internal to the interrogator. 4 of these are
available at the DB-25 connector: pins 20, 7, 19, and 6 can be controlled
by setting or resetting bits, 3, 4, 5 and/or 6 of the command data byte of
the Write Peripheral Outputs command. The outputs are compatible
with CMOS levels.
Table 5.
Output Characteristics
*Note: VCC Min. is 4.75 volts, VCC is nominally 5.0 volts.
Description
Min.
Max. Units
High level output voltage @I
OutputHigh
= 1.0 mA, VCC* Min.
VCC* – 0.5
Volts
Low level output voltage @I
OutputHigh
= 12.0 mA, VCC* Min.
.4
Volts
Source current
-1.0
mA
Sink current
12.0
mA
Ouput leakage current
-10
+10
µ
A
556-EP Manual.P65
2/27/2001, 3:21 PM
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