Avago Technologies LSI53C895A - Manual (Page 269)

TolerANT Technology Electrical Characteristics 6-9
Figure 6.3 Rise and Fall Time Test Condition
Figure 6.4 SCSI Input Filtering
t
F
Fall time, 90% to 10% 4.0 18.5 ns Figure 6.3
dV
H
/dt Slew rate, LOW to HIGH 0.15 0.50 V/ns Figure 6.3
dV
L
/dt Slew rate, HIGH to LOW 0.15 0.50 V/ns Figure 6.3
ESD Electrostatic discharge 2 – KV MIL-STD-883C; 3015-7
Latch-up 100 – mA –
Filter delay 20 30 ns Figure 6.4
Ultra filter delay 10 15 ns Figure 6.4
Ultra2 filter delay 5 8 ns Figure 6.4
Extended filter delay 40 60 ns Figure 6.4
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 6.14 TolerANT Technology Electrical Characteristics for SE SCSI Signals
(Cont.)
Symbol Parameter Min
1
Max Unit Test Conditions
+
−
2.5 V
47
Ω
20 pF
REQ/ or SACK/ Input
t
1
V
TH
Note: t
1
is the input filtering period.