74LCXZ162244MEA

Overview

The onsemi 74LCXZ162244MEA is a low-voltage CMOS octal buffer with 5V tolerant inputs and outputs, packaged in a 48-lead SSOP. It contains sixteen non-inverting buffers with 3-state outputs designed for memory, address, and clock driving applications. The device features nibble control with separate 3-state control inputs for each of the four nibbles. Outputs include nominal 26/58 ohm series resistors to reduce overshoot and undershoot. It operates at VCC between 2.7V and 3.6V, supporting live insertion and withdrawal while ensuring high impedance during power-up/down.

Feature Summary

• Features 5V tolerant inputs and outputs for interfacing with 5V signal environments
• Includes nominal 26/58 ohm series resistors in outputs to minimize signal overshoot and undershoot
• Supports live insertion and withdrawal with guaranteed high impedance state during power transitions
• Implements patented noise and EMI reduction circuitry for improved signal integrity

Applications

• Memory and address drivers
• Clock drivers
• Bus oriented transmitter/receiver applications

Procurement Notes

Verify the specific package variant required, as the base part number corresponds to multiple packages including SSOP (MS48A) and TSSOP (MTD48). The suffix 'MEA' specifically denotes the 48-lead Small Shrink Outline Package. Confirm that the ordering code matches the desired physical footprint and JEDEC standard before finalizing procurement to ensure compatibility with existing board layouts.

Selection Notes

Select this component when designing systems requiring 16-bit buffering with independent nibble control. It is suitable for low-voltage applications operating between 2.7V and 3.6V that must interface with 5V logic levels. Consider its integrated series output resistors for applications needing inherent overshoot suppression without external components. Ensure the design accommodates the 48-lead SSOP package dimensions.

Part Context

This device belongs to the LCXZ family of low-voltage CMOS logic devices manufactured by Fairchild Semiconductor, now part of onsemi. It is categorized under buffer and line drivers within the logic integrated circuits portfolio. The LCXZ series is characterized by its ability to operate at lower supply voltages while maintaining compatibility with higher voltage I/O standards, making it distinct from standard 5V or pure 3.3V logic families.

Replacement Considerations

Direct substitutes may include other 16-bit buffers with similar 5V tolerance and nibble control features. Verify pinout compatibility and electrical specifications such as propagation delay and output drive current. Check if alternative packages are available for the same logical function if space constraints differ.