74LCXZ2245MTC

Overview

The Fairchild Semiconductor 74LCXZ2245MTC is a low-voltage bidirectional transceiver featuring eight non-inverting buffers with three-state outputs. It operates within a supply voltage range of 1.4V to 3.6V and supports 5V tolerant inputs and outputs. The device incorporates 26 Ω series resistors in the B outputs to minimize signal reflections. Packaged in a 20-TSSOP, it functions across an industrial temperature range of -40°C to 85°C.

Feature Summary

• Provides bidirectional data transmission via eight non-inverting buffer channels
• Features 5V tolerant I/O capabilities for mixed-voltage system interfacing
• Integrates 26 Ω series output resistors to reduce signal ringing

Applications

• Bus-oriented memory interface applications
• Mixed-voltage domain data routing
• High-speed digital signal buffering

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as historical records indicate potential non-compliance for specific manufacturing lots. Ensure the 20-TSSOP package matches your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when 5V tolerance is required alongside low-voltage operation. The integrated series resistors simplify design by reducing external components needed for impedance matching. Compare against standard LCX245 variants if higher drive current or different resistor values are not critical for the specific application constraints.

Part Context

This part belongs to the 74LCXZ family, which extends the standard LCX logic series with enhanced features like built-in series resistors. It serves as a specialized variant designed for bus applications requiring improved signal integrity without additional discrete components, distinguishing it from the standard 74LCX2245.

Replacement Considerations

The 74LCX2245 is a functional equivalent lacking the series resistors. Verify if the absence of internal resistance impacts signal integrity in high-speed designs before substituting.