TC74LCX245FK(EL,K)

Overview

The TC74LCX245FK(EL,K) is a low-voltage octal bus transceiver manufactured by Toshiba Semiconductor and Storage. It operates within a power supply voltage range of 1.65 V to 3.6 V, with specific data retention capabilities down to 1.5 V. The device supports bidirectional data transmission between two 8-bit buses, featuring 5-V tolerant inputs and outputs that allow direct interfacing between 3.3-V and 5.0-V systems. Propagation delay is specified at a maximum of 7.0 ns when operating between 3.0 V and 3.6 V. Output drive capability reaches a minimum of 24 mA at 3.0 V. The component is housed in a 20-pin VSSOP package.

Feature Summary

• Bidirectional interface capability between 5.0 V and 3.3 V signal environments
• Power-down protection provided on all inputs and outputs
• Pin and function compatibility with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 245 type

Applications

• Low-voltage (3.3 V) system applications requiring high-speed operation
• Interfacing between 5.0 V and 3.3 V signals
• Two-way asynchronous communication between data busses

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm the exact package type and reel specifications. Ensure the procurement channel provides official datasheets for the requested variant. Confirm RoHS compliance status directly with the supplier or manufacturer representative prior to purchase.

Selection Notes

Select this component for designs requiring CMOS low power dissipation combined with high-speed performance. It is suitable for 3.3-V systems but also supports 5-V supply environments for both inputs and outputs. Consider the propagation delay and output current requirements relative to the load capacitance and operating voltage conditions defined in the electrical characteristics table.

Part Context

This part belongs to the TC74LCX series of low-voltage CMOS logic integrated circuits. It functions as an octal bus transceiver designed for use in 3.3-V systems while maintaining compatibility with legacy 74-series logic families. The device utilizes silicon monolithic technology to achieve high-speed operation without increasing power consumption significantly compared to standard CMOS devices.

Replacement Considerations

The datasheet notes pin and function compatibility with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 245 type. Verify voltage levels and speed requirements match before substituting with other manufacturers' equivalents.