SCD1284 INTEL [Intel Corporation], SCD1284 Datasheet - Page 85

• Manufacturer Part Number: SCD1284
• Description: IEEE 1284-Compatible Parallel Interface Controller with Two High-Speed Asynchronous Serial Ports
• Manufacturer: INTEL [Intel Corporation]

IEEE 1284-Compatible Parallel Interface Controller — CD1284
Figure 13. Cable Connection
+5 V
1.2 k
1.2 k
BIDIRECTIONAL
SIGNAL LINE
20
OUTPUT
SIGNAL LINE
20
INPUT
SIGNAL LINE
TRANSIENT
PROTECTION
CD1284
Caution: Transient protection is not implemented inside the CD1284 device, therefore transient voltages may cause
damage. Laboratory testing has shown that this type of protection is not necessary under normal conditions.
However, damage may occur under harsh conditions or when subjected to unusual abuse. Also note, the protection
circuit shown here may cause a powered-up host to supply power to the +5 V (V
) of the peripheral if it is not
cc
powered up. If this is a concern, then another protection circuit must be designed.
Datasheet
85