Parallel I/O Cabling Requirements; Parallel I/O Connector J1 Dc Characteristics; Parallel I/O Cabling Information - Intel iSBC 86/14 Hardware Reference Manual

PREPARATION FOR USE
Table 2-27. Parallel I/O Connector J1 DC Characteristics
Parameter
Test
Signals Symbol Description Conditions Min.
Max. Units
Port C8 Vol Output Low Voltage
101=31
0.45
Bidirectional Voh Output High Voltage Ioh=-9.2
rnA
2.4
Drivers
ViI Input Low Voltage
0.9
Vih Input High Voltage
2.0
IiI Input Current at Low V Vin=0.45V
-5.25
*Cl Capacitive Load
18
8255A Vol
Output Low Voltage
101=31
rnA
0.45
Driver/ Voh Output High Voltage Ioh=9.2
rnA
2.4
Receiver
ViI Input Low Voltage
Vih Input High Voltage
2.0
IiI
Input Current at Low V Vin=0.45
Iih Input Current at High V Vin=5.0
*Cl
Capacitive Load 18
EXT INTRO/
ViI Input Low Voltage 0.8
Vih Input High Voltage 2.0
IiI
Input Current at Low V Vin=0.4V -1.0
Iih
Input Current at High V Vin=27 -0.8
*Cl
Capacitive Load 30
*Capacitive load values are approximations.
2-36. Parallel I/O Cabling Requirements
Table 2-28 contains part numbers of types of cable that may be used to
interface the parallel port I/O to a user application. Any functional
and electrical equivalent may be substituted. Compatible J1 connector
information was presented earlier in the text in Table 2-2. To obtain
maximum reliability, limit the length of the parallel I/O cable to 3
meters (about 10 feet) or less.
Table 2-28. Parallel I/O Cabling Information
Cable Type Mfr Part Number
Flat Cable, 50 conductor, w/o ground plane 3M
3M 3306-50
Flat Cable, 50 conductor, with ground plane
3M
3M 3306-50
Woven cable, 25-pair
3M 3M 3321-25
2-69
V
V
V
V
rnA
pF
V
V
V
V
uA
pF
V
V
rnA
uA
pF