![8282 Pinout](https://upload.wikimedia.org/wikipedia/commons/0/0f/8282_Pinout.png)
The Intel 8282 is an 8-bit
latch
A latch or catch (called sneck in Northern England and Scotland) is a type of mechanical fastener that joins two (or more) objects or surfaces while allowing for their regular separation. A latch typically engages another piece of hardware on t ...
, which was developed primarily for the
Intel-8086/
8087
The Intel 8087, announced in 1980, was the first x87 floating-point coprocessor for the 8086 line of microprocessors.
The purpose of the 8087 was to speed up computations for floating-point arithmetic, such as addition, subtraction, multi ...
/
8088
The Intel 8088 ("''eighty-eighty-eight''", also called iAPX 88) microprocessor is a variant of the Intel 8086. Introduced on June 1, 1979, the 8088 has an eight-bit external data bus instead of the 16-bit bus of the 8086. The 16-bit registers a ...
/
8089-processors. The component comes in 20-pin
DIL package
In microelectronics, a dual in-line package (DIP or DIL), is an electronic component package with a rectangular housing and two parallel rows of electrical connecting pins. The package may be through-hole mounted to a printed circuit board ...
. It was licensed to companies such as
NEC
is a Japanese multinational information technology and electronics corporation, headquartered in Minato, Tokyo. The company was known as the Nippon Electric Company, Limited, before rebranding in 1983 as NEC. It provides IT and network soluti ...
and
Siemens. With the ROM-less versions of the
MCS-48
The MCS-48 microcontroller series, Intel's first microcontroller, was originally released in 1976. Its first members were 8048, 8035 and 8748. The 8048 is probably the most prominent member of the family. Initially, this family was produced us ...
and
MCS-51 microcontroller (8035/8039 and 8031/8032) compact systems with external ROM / EPROM can be realized. The 8282 can also be used in
8080
The Intel 8080 (''"eighty-eighty"'') is the second 8-bit microprocessor designed and manufactured by Intel. It first appeared in April 1974 and is an extended and enhanced variant of the earlier 8008 design, although without binary compatibil ...
/
8085
The Intel 8085 ("''eighty-eighty-five''") is an 8-bit microprocessor produced by Intel and introduced in March 1976. It is software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added i ...
-systems replacing the
8212. If (''Output Enable'') is connected to GND, the chip is selected. STB (''Strobe'') is connected to the pin ALE (''Address Latch Enable'') of the processor and takes over the address data from the multiplexed address-/databus. The
8283 has the same functionality, but the data is inverted. In 1980 the Intel 8282 and I8282 (industrial grade) version was available for 5.55 USD and 16.25 USD in quantities of 100 respectively.
[8086 Available for industrial environment, Intel Preview Special Issue: 16-Bit Solutions, Intel Corporation, May/June 1980, page 29]
Intel 8282 is functionally identical to
74573 octal latch, although the pinout differ slightly.
:
References
Literature and datasheets
* Datasheet (Intel)
8282/8283 Octal Latch* NEC Electronics (Europe) GmbH, 1982 Catalog, p. 703–706
External links
* www.cpu-world.com
Image
{{DEFAULTSORT:8282
Input/output integrated circuits
Intel chipsets