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Table 6.11
TolerANT Technology Electrical Characteristics for SE SCSI Signals
Symbol
Parameter
2
V
Output high voltage
OH
V
Output low voltage
OL
V
Input high voltage
IH
V
Input low voltage
IL
V
Input clamp voltage
IK
V
Threshold, HIGH to LOW
TH
V
Threshold, LOW to HIGH
TL
V
–V
Hysteresis
TH
TL
2
I
Output high current
OH
I
Output low current
OL
2
I
Short-circuit output high current
OSH
I
Short-circuit output low current
OSL
I
Input high leakage
LH
I
Input low leakage
LL
R
Input resistance
I
C
Capacitance per pin
P
2
t
Rise time, 10% to 90%
R
t
Fall time, 90% to 10%
F
dV
/dt
Slew rate, LOW to HIGH
H
dV
/dt
Slew rate, HIGH to LOW
L
ESD
Electrostatic discharge
Latch-up
Filter delay
Ultra filter delay
Extended filter delay
1. These values are guaranteed by periodic characterization; they are not 100% tested on every
device.
2. Active negation outputs only: Data, Parity, SREQ/, SACK/.
3. Single pin only; irreversible damage may occur if sustained for one second.
6-6
Electrical Specifications
1
Min
Max
2.0
V
+0.3
DD
V
0.5
SS
2.0
V
+0.3
DD
V
0.3
0.8
SS
0.66
0.77
1.0
1.2
1.4
1.6
300
500
2.5
24
100
200
–
625
–
95
–
20
–
20
20
–
–
15
4.0
18.5
4.0
18.5
0.15
0.50
0.15
0.50
2
–
100
–
20
30
10
15
40
60
Unit
Test Conditions
V
I
= 7 mA
OH
V
I
= 48 mA
OL
V
–
V
Referenced to V
V
V
= 4.75; I
DD
I
V
–
V
–
mV
–
mA
V
= 2.5 V
OH
mA
V
= 0.5 V
OL
mA
Output driving low, pin
shorted to V
DD
mA
Output driving high, pin
shorted to V
SS
A
0.5 < V
DD
V
= 2.7 V
PIN
A
0.5 < V
DD
V
= 0.5 V
PIN
M
SCSI pins
pF
PQFP
ns
Figure 6.1
ns
Figure 6.1
V/ns
Figure 6.1
V/ns
Figure 6.1
KV
MIL-STD-883C; 3015-7
mA
–
ns
Figure 6.2
ns
Figure 6.2
ns
Figure 6.2
SS
= 20 mA
3
supply
supply
< 5.25
< 5.25
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