74LVT162245MTD

Overview

The Fairchild Semiconductor 74LVT162245MTD is a low-voltage 16-bit bidirectional bus transceiver featuring three-state outputs. It operates within a voltage range of 2.7V to 3.6V and supports LVTTL input and LVTTL output levels. The device includes byte control for independent operation of two 8-bit sections or full 16-bit functionality. Key electrical characteristics include an A port with 25-ohm series resistors and ±12 mA drive, while the B port provides -32 mA source and 64 mA sink currents. Propagation delay is typically 4.6 ns.

Feature Summary

• Incorporates 25-ohm series resistors in A port outputs to reduce signal overshoot and undershoot without external termination components
• Provides power-up/down high-impedance state to ensure glitch-free bus loading during live insertion or extraction events
• Features bus-hold data inputs that eliminate the requirement for external pull-up resistors on unused pins

Applications

• Bus-oriented memory and disk controller architectures
• High-performance embedded systems requiring bi-directional data transfer
• Consumer products utilizing low-voltage logic interfaces

Procurement Notes

Verify the specific suffix 'MTD' against official datasheets to confirm the SSOP-48 package type and tape-and-reel or tube packaging configuration. Ensure the component meets RoHS compliance standards required for your manufacturing process. Cross-reference the manufacturer part number with current distributor catalogs to confirm availability and authenticity before procurement.

Selection Notes

Select this component when designing systems requiring 3.3V logic interfacing with 5V tolerant peripherals. The integrated series resistance simplifies PCB layout by removing the need for external termination resistors on the A port. Consider the byte-control feature if independent 8-bit data flow management is necessary for the application architecture.

Part Context

This device belongs to the 74LVT family of low-voltage CMOS logic circuits. It is functionally compatible with the standard 74FCT162245 but optimized for lower voltage operation. The 16-bit width allows for efficient parallel data transmission, making it suitable for wide-bus applications where speed and signal integrity are critical constraints.

Replacement Considerations

The 74LVTH162245MEA is a verified substitute offering identical functionality with added bushold features. Other compatible alternatives include the IDT74LVC162245APVG8 and PI74FCT162245T, provided voltage levels and package footprints match the design requirements.