LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 243

• Manufacturer Part Number: LSI53C875
• Description: PCI to Ultra SCSI I/O Processor
• Manufacturer: LSI Logic

7.2 TolerANT Technology Electrical Characteristics
Table 7.15
V
Symbol
dV
dV
TH
I
V
I
OSH
I
V
V
V
V
V
V
OH
I
OSL
I
t
C
I
OH
R
OL
LH
R
t
LL
OL
–V
H
TH
L
TL
F
IH
IK
IL
P
1
I
/dt
/dt
1
1
1
TL
Parameter
Output high voltage
Output low voltage
Input high voltage
Input low voltage
Input clamp voltage
Threshold, HIGH to LOW
Threshold, LOW to HIGH
Hysteresis
Output high current
Output low current
Short-circuit output high current
Short-circuit output low current
Input high leakage
Input low leakage
Input resistance
Capacitance per pin
Rise time, 10% to 90%
Fall time, 90% to 10%
Slew rate, LOW to HIGH
Slew rate, HIGH to LOW
TolerANT Technology Electrical Characteristics
The LSI53C875 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
0.15
0.19
Min
200
100
2.5
0.1
2.0
0.66
1.1
1.5
2.5
9.7
5.2
20
0.5
–
–
–
–
–
Max
18.5
14.7
0.49
0.67
400
200
625
3.5
0.5
7.0
0.8
0.77
1.3
1.7
24
95
10
10
10
–
Figure 7.1
Table 7.15
V/ns
V/ns
Unit
M
mV
mA
mA
mA
mA
pF
ns
ns
V
V
V
V
V
V
V
A
A
through
V
Output driving high, pin
shorted to V
Output driving low, pin
shorted to V
DD
Referenced to V
Test Conditions
0.5 < V
0.5 < V
provides electrical
= 4.75; I
I
V
V
I
V
OH
V
OL
SCSI pins
Figure 7.1
Figure 7.1
Figure 7.1
Figure 7.1
PIN
PIN
OH
OL
Figure 7.5
PQFP
= 2.5 mA
= 48 mA
= 0.5 V
= 2.5 V
= 2.7 V
= 0.5 V
–
–
–
–
DD
DD
DD
I
SS
= 20 mA
< 5.25
< 5.25
supply
supply
3
SS
2
7-7