electronics, a pin-compatible device, such as a logic integrated circuit (IC), memory module or microprocessor, is one that has the same functions assigned to the same particular pins. [ [http://www.businessdictionary.com/definition/pin-compatible.html business dictionary - pin-compatible] ]
There are several levels of compatibility in
integrated circuits (ICs). Strictly speaking, "pin-compatible" refers only to two chips that have the same functions assigned to the same pins. For instance, two logic chips would have their inputs, outputs, power supply, and ground connections on the same pins.
Generally pin compatibility presumes mechanical and electrical compatibility, and the expression "pin-compatible" is often used as shorthand to refer to compatibility in all three of these senses.
ICs are mechanically compatible if they can be inserted into the same socket or soldered to the same footprint. This is generally true if (and only if) they use the same packaging standard (e.g.
DIP, TO-220, TSOP, etc.).
Electrical compatibility implies that the ICs work with the same supply and signaling voltage levels. Note that (unlike mechanical compatibility) this requirement is not necessarily bidirectional (chip A can be electrically compatible with B, but not vice-versa). For instance, the HC family of chips can run on 2V to 6V supplies, while the HCT family only tolerates 4.5V to 5.5V, so an HC can be used to replace an HCT, but not vice-versa (note: this is a simplistic treatment, and HC/HCT are largely, but not fully compatible, even at the shared 5V supply).
The most widely used and recognized family of pin-compatible chips is the 74'xx series of logic ICs. The tick-mark represents the omitted type designator -- most commonly HC (high-speed
CMOS), but can also be blank (original TTL), C (CMOS), LS (low-power Schottky), and many others. The "xx" represents the actual part, and ranges from 00 (quad 2-input NAND) to 40103 (8-bit synchronous binary down counter). All of the various families have remained pin-compatible over several decades of production by numerous different companies, including some versions that were not electrically compatible.
* [http://www.kingswood-consulting.co.uk/giicm/ Giant Internet IC Masturbator] - A list of 74'xx series and other generic chip pinouts (site is work-safe, despite its title)
Wikimedia Foundation. 2010.
Look at other dictionaries:
pin compatibility — kojelių žingsnio suderinamumas statusas T sritis radioelektronika atitikmenys: angl. pin compatibility vok. Pinkompatibilität, f rus. совместимость по шагу выводов, f pranc. compatibilité broche à broche, f … Radioelektronikos terminų žodynas
Compatibility — may refer to: Astrological compatibility Compatibilism – a philosophical position Compatibility (geochemistry) Compatibility (chemical) Compatibility (mechanics) Electromagnetic compatibility Interpersonal compatibility Computing Pin… … Wikipedia
IEEE Electromagnetic Compatibility Society — Infobox Organization name = IEEE Electromagnetic Compatibility Society image border = size = caption = formation = 1957 type = location = membership = language = English leader title = leader name = key people = num staff = budget = website =… … Wikipedia
Digital Visual Interface — (DVI) A male DVI D (single link) connector. Type Digital and analog computer video connector Production history … Wikipedia
x86 — This article is about Intel microprocessor architecture in general. For the 32 bit generation of this architecture which is also called x86 , see IA 32. x86 Designer Intel, AMD Bits 16 bit, 32 bit, and/or 64 bit Introduced 1978 Design … Wikipedia
MOS Technology — Not to be confused with Mostek. MOS Technology, Inc. Industry Semiconductor design and manufacturing Predecessor Allen Bradley Successor Co … Wikipedia
Oak Technology — was a supplier of semiconductor chips for sound cards, graphics cards and optical storage devices such as CD ROM, CD RW and DVD. In 2003, it was acquired by Zoran Corporation. Oak Technology helped develop the ATAPI standard and provided the… … Wikipedia
Logic family — In computer engineering, a logic family may refer to one of two related concepts. A logic family of monolithic digital integrated circuit devices is a group of electronic logic gates constructed using one of several different designs, usually… … Wikipedia
Geode (processor) — For other uses of Geode, see Geode (disambiguation) Geode is a series of x86 compatible System on a chip microprocessors and I/O companions produced by AMD targeted at the embedded computing market.The series was originally launched by National… … Wikipedia
PBGA479 — is a mobile CPU package type used by several architectures of Intel CPUs. The package type is specific to CPUs that do not use a socket but are instead soldered to the motherboard (see ball grid array). PGA (pin grid array) refers to a… … Wikipedia