An active termination design for the SCSI-2 bus is described.
LT1117 low dropout regulator
The SCSI-2 bus1 is an interface for computers and instrumentation that communicate over small distances—often within the same cabinet. Like GPIB (IEEE 488), SCSI’s hardware and software specifications are designed to coordinate independent resources such as disk and tape drives, file servers, printers, and other computers. SCSI-2 is a bidirectional bus, which must be terminated at both ends to 2.85V (Figure 399.1). The terminators are needed because SCSI-2 uses simple open collector output drivers in its transceivers. Terminators ...