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Table 6.9
Output Signals—IRQ/, MAC/_TESTOUT, REQ/
Symbol
Parameter
V
Output high voltage
OH
V
Output low voltage
OL
I
3-state leakage
OZ
I
Pull-down current - only
PULL
on IRQ/
Table 6.10
Output Signal—SERR/
Symbol
Parameter
V
Output low voltage
OL
I
3-state leakage
OZ
6.2 TolerANT Technology Electrical Characteristics
0.9 V
The LSI53C875A features TolerANT technology, which includes active
negation on the SCSI drivers and input signal filtering on the SCSI
receivers. Active negation actively drives the SCSI Request,
Acknowledge, Data, and Parity signals HIGH rather than allowing them
to be passively pulled up by terminators.
characteristics for SE SCSI signals.
provide reference information for testing SCSI signals.
TolerANT Technology Electrical Characteristics
Min
Max
V
DD
DD
V
0.1 V
SS
DD
10
10
50
12.5
Min
Max
V
0.1 V
SS
DD
10
10
Figure 6.1
Unit
Test Conditions
V
16 mA
V
16 mA
A
A
Unit
Test Conditions
V
16 mA
A
Table 6.11
provides electrical
through
Figure 6.5
–
–
–
6-5
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