The NCR 5380 is an early SCSI

SCSI

Small Computer System Interface is a set of standards for physically connecting and transferring data between computers and peripheral devices. The SCSI standards define commands, protocols, and electrical and optical interfaces. SCSI is most commonly used for hard disks and tape drives, but it...

 controller chip developed by NCR Microelectronics

NCR Corporation

NCR Corporation is an American technology company specializing in kiosk products for the retail, financial, travel, healthcare, food service, entertainment, gaming and public sector industries. Its main products are self-service kiosks, point-of-sale terminals, automated teller machines, check...

. It was popular due to its simplicity and low cost. The 5380 was used in the Macintosh Plus

Macintosh Plus

The Macintosh Plus computer was the third model in the Macintosh line, introduced on January 16, 1986, two years after the original Macintosh and a little more than a year after the Macintosh 512K, with a price tag of US$2599...

 and in numerous SCSI cards for personal computers, including the Amiga

Amiga

The Amiga is a family of personal computers that was sold by Commodore in the 1980s and 1990s. The first model was launched in 1985 as a high-end home computer and became popular for its graphical, audio and multi-tasking abilities...

 and Atari TT. The 5380 was second source

Second source

In the electronics industry, a second source is a company that is licensed to manufacture and sell components originally designed by another company ....

d by several chip makers, including AMD and Zilog

Zilog

Zilog, Inc., previously known as ZiLOG , is a manufacturer of 8-bit and 24-bit microcontrollers, and is most famous for its Intel 8080-compatible Z80 series.-History:...

.

The NCR 5380 also made a significant appearance in Digital Equipment Corporation

Digital Equipment Corporation

Digital Equipment Corporation was a major American company in the computer industry and a leading vendor of computer systems, software and peripherals from the 1960s to the 1990s...

's VAX

VAX

VAX was an instruction set architecture developed by Digital Equipment Corporation in the mid-1970s. A 32-bit complex instruction set computer ISA, it was designed to extend or replace DEC's various Programmed Data Processor ISAs...

 computers, where it was featured on various Q-Bus

Q-Bus

The Q-bus was one of several bus technologies used with PDP and MicroVAX computer systems manufactured by the Digital Equipment Corporation of Maynard, Massachusetts....

 modules and as an integrated SCSI controller in numerous MicroVAX

MicroVAX

The MicroVAX was a family of low-end minicomputers developed and manufactured by Digital Equipment Corporation . The first model, the MicroVAX I, was introduced in 1984...

, VAXstation

VAXstation

The VAXstation was a family of workstation computers developed and manufactured by Digital Equipment Corporation using processors implementing the VAX instruction set architecture .- VAXstation I :...

 and VAXserver

VAXserver

The VAXserver was a family of minicomputers developed and manufactured by Digital Equipment Corporation using processors implementing the VAX instruction set architecture . The VAXserver models were variants of various VAX-based computers which were configured to only run operating systems which...

computers.