74VCXH162244MTX

Logic - Buffers, Drivers, Receivers, Transceivers

The 74VCXH162244MTX is a high-speed CMOS Logic parallel bus transceiver. It is part of the VCXH series, a family of Fast CMOS SIMPLE SWITCHER® logic ICs, providing an optimal combination of low power and high speed performance. This IC provides logic translation between an 18- or 24-bit I/O bus (depending on package option) and an 8-bit I/O bus. It has two separate I/O bus systems with tri-state bidirectional bus pins and separate data flow directions. The device is constructed with advanced CMOS technology, which gives it superior speed and low power consumption compared to ordinary logic chips.

Application Field

The 74VCXH162244MTX is intended for use in applications where high speed, low power, and logic translation are paramount. Typical applications of the IC include bus interface in computer systems, high speed printer and terminal interface, bus interface in communications systems, signal conditioning in VLSI applications, memory interface and microprocessor or DSP interface.

Working Principle

The 74VCXH162244MTX is based on a current mode logic (CML) architecture, a technology wherein each logic signal is driven by an individual current source rather than by a square wave voltage. This architecture allows the IC to produce higher switching speeds and lower power consumption than traditional logic architectures. In addition, the IC has an asynchronous board-level handshake capability enabling each output to be independently enabled/externally controlled. The transceiver implements two bidirectional I/O buses, each composed of an 18- or 24-bit data bus and a 4-bit control bus. Data is transferred from bus A to bus B when the control bus is asserted, and vice versa for data transfer from bus B to bus A.

The device also implements a 15 ns typical propagation delay for all data transfers and signals, making it an ideal choice for high speed logic applications. Additionally, the device also has an on-chip power-down feature, allowing it to enter into a low power mode when it is not actively transferring data.

Conclusion

The 74VCXH162244MTX is an ideal solution for high speed, low power, and logic translation applications. Its CML architecture, coupled with its high speed propagation delay, low power consumption and on-chip power-down feature, make it an attractive choice forhigh-performance applications.