TC74LCX16244ELF

Overview

The TC74LCX16244 is a high-performance CMOS 16-bit bus buffer designed for 2.5 V or 3.3 V systems, featuring 5-V tolerant inputs and outputs. It operates with a supply voltage (VCC) of 2.0 to 3.6 V and supports an operating temperature range of -40 °C to 125 °C. The device provides four active-low output enables, allowing configuration as four 4-bit, two 8-bit, or one 16-bit non-inverting buffer. Propagation delay is 4.5 ns max at VCC = 3.0 to 3.6 V, with output currents of ±24 mA min at VCC = 3.0 V.

Feature Summary

• Low-voltage operation compatible with 2.5 V and 3.3 V systems while interfacing with 5 V environments
• High-speed performance with low power dissipation characteristics
• Configurable multi-bus buffering with four independent active-low output enables
• Power-down protection on all inputs and outputs against static discharge

Applications

• 3-state memory address drivers
• Clock distribution circuits
• Bus-oriented communications
• Data acquisition systems

Procurement Notes

Verify the manufacturing date to confirm compliance with the extended operating temperature range specification. Products manufactured after January 2020 support the Topr = -40 °C to 125 °C range; earlier units may have different thermal limits. Ensure the ordering suffix matches the required package type and tape/reel specifications. Confirm RoHS compatibility status directly with Toshiba Semiconductor and Storage representatives prior to final procurement decisions.

Selection Notes

Select this component when designing low-voltage logic interfaces requiring 5-V tolerance without level shifting. The device suits applications needing configurable bus widths via multiple output enables. Consider the propagation delay and output drive current requirements relative to load capacitance. Verify that the system's quiescent current constraints align with the specified ICC values across the intended operating temperature range.

Part Context

This part belongs to the TC74LCX series of low-voltage CMOS digital integrated circuits. It functions specifically as a 16-bit bus buffer within Toshiba's portfolio of logic devices. The LCX family targets applications demanding high speed and low power consumption in portable and battery-operated equipment. It complements other bus transceivers and buffers in mixed-voltage system designs.

Replacement Considerations

Consult official Toshiba documentation for verified substitute part numbers. Cross-referencing requires matching logical function, pinout, voltage ranges, and package dimensions. Do not assume functional equivalence based solely on similar naming conventions or generic family features.