Avago Technologies LSI53C120 - Manual (Page 43)

Electrical Characteristics 3-13
Figure 3.3 shows the rise and fall time test conditions described in
Table 3.17 .
Figure 3.3 Rise and Fall Time Test Conditions
Figure 3.4 shows the SCSI input filtering described in Table 3.17 .
Figure 3.4 SCSI Input Filtering
Figure 3.5 shows the hysteresis of a SCSI receiver.
t
F
Fall time, 90% to 10% 5.2 14.7 ns Figure 3.4
dV
H
/dt Slew rate, low to high 0.15 0.49 V/ns Figure 3.3
dV
L
/dt Slew rate, high to low 0.19 0.67 V/ns Figure 3.3
ESD Electrostatic discharge 2 – KV MIL-STD-883C; 3015-7
Latch-up 100 – mA –
t
1
Filter delay 10 15 ns Figure 3.4
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.
4. SCSI RESET pin has 10 k
Ω
pull-up resistor.
Table 3.17 TolerANT Technology Electrical Characteristics
1
(Cont.)
Symbol Parameter Min Max Units Test Conditions
20 pF
47
Ω
2.5 V
+
−
REQ/ or ACK/ Input
t
1
V
TL
Note: t
1
is the input filtering period.