 Origin |
USA |
Specialty Logic
Introduction
Logic circuits include such devices as latches, transceiver, multiplexers, registers, ALUs, and computer memory, all the way up through complete microprocessors which can contain more than a 100 million gates. In practice, the gates are made from FETs, particularly MOSFETs.
Specialty logic gates have diverse states of the output: high (H), low (L) and high-impedance (Z). The high-impedance state plays no role in the logic, which remains strictly binary. These devices are used on buses to allow multiple chips to send data. A group of three-states driving a line with a suitable control circuit is basically equivalent to a multiplexer, which may be physically distributed over separate devices.
Feature
Minimized signal distortion during live insertion or withdrawal
High-impedance state during power up and power down
No power-up sequencing required and power-off protection
Application
General consumer products
Wide variety of RF applications
Automotive systems
Category
Backplane Logic
Boundary Scan Logic
Bus Termination Arrays and Networks
DIMM Memory Drivers and Transceivers
Miscellaneous Gate and Delay Elements
Monostable Multivibrators
Phase-Locked-Loops (PLLs) and Oscillators
Programmable Logic
Product
FAIRCHILD
MAXIM
TI
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