74LCXZ16245MTD

Overview

The onsemi 74LCXZ16245MTD is a low-voltage 16-bit bidirectional bus transceiver featuring non-inverting buffers with 3-state outputs. Designed for bus-oriented applications, it operates within a supply voltage range of 2.0 V to 3.6 V. The device utilizes TSSOP-48 packaging and supports LVTTL/TTL input levels while providing LVCMOS output levels. It includes bus hold functionality to maintain stable states during invalid input conditions. The component is rated for operation from -40°C to +85°C and exhibits a propagation delay of 5.2 ns.

Feature Summary

• Provides sixteen non-inverting bidirectional buffer channels with 3-state output capability for efficient bus management.
• Integrates bus hold functionality to prevent floating outputs when input signals are invalid or transitioning.
• Supports mixed voltage domain interfacing by accepting LVTTL or TTL inputs while driving LVCMOS loads.

Applications

• Bus-oriented memory interface systems requiring bidirectional data transfer
• Mixed voltage domain signal translation between logic families
• High-density digital communication buses utilizing 16-bit parallel architectures

Procurement Notes

Verify current availability status as the component may be discontinued or subject to end-of-life restrictions. Confirm package integrity and moisture sensitivity level handling requirements prior to assembly. Ensure compatibility with existing board design constraints regarding the TSSOP-48 footprint and thermal dissipation characteristics.

Selection Notes

Select this component for applications requiring low-voltage operation between 2.0 V and 3.6 V with specific LVTTL input compatibility. Consider the 5.2 ns propagation delay and 24 mA drive strength for timing and load analysis. Evaluate the TSSOP-48 package size against available PCB real estate and soldering capabilities.

Part Context

This part belongs to the 74LCXZ series of low-voltage CMOS logic devices manufactured by onsemi. It shares functional similarities with other 16-bit transceivers in the 74LCX family but offers specific voltage tolerance and bus hold features tailored for modern low-power digital systems.

Replacement Considerations

Publicly confirmed substitute part numbers include 74LCXH16245MTDX and 74LCX16245MTDX. Verify pinout compatibility and electrical specifications before substitution.

FAQ

What is the function of the bus hold feature in this transceiver?

The bus hold feature maintains the last valid output state when the input signal is invalid or transitioning, preventing undefined logic levels on the bus.

Does this device support bidirectional data flow?

Yes, the 74LCXZ16245MTD contains sixteen non-inverting bidirectional buffers allowing data transfer in both directions controlled by the direction pin.