TC74LCX245FTELM

Overview

The TC74LCX245FTELM 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, supporting bidirectional data transmission between busses. The device features 5-V tolerant inputs and outputs, allowing interface with 5.0 V and 3.3 V signals. Propagation delay is specified at a maximum of 7.0 ns when VCC is between 3.0 V and 3.6 V. Output current capability reaches 24 mA minimum at VCC = 3.0 V. The component utilizes a 20-pin SOP 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 245 type devices

Applications

• Low-voltage (3.3 V) system applications requiring high-speed operation
• Bus-to-bus communication in asynchronous systems
• Interfacing between 5.0 V and 3.3 V logic levels

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the base part number covers multiple packages including SOP and VSSOP. Confirm manufacturing date codes if operating characteristics for lower voltages are critical, as certain electrical parameters apply only to products manufactured from January 2009 onward. Ensure static discharge protection requirements are met during handling.

Selection Notes

Select this component for designs requiring CMOS low power dissipation combined with high-speed performance similar to LSTTL. It is suitable for 3.3 V VCC applications but also supports interfacing to 5-V supply environments. Consider the bidirectional nature controlled by the DIR input and the enable functionality provided by the OE pin for bus isolation needs.

Part Context

This device belongs to the TC74LCX series of low-voltage CMOS digital integrated circuits. It is fabricated using silicon monolithic technology. The product line includes variants such as the TC74LCX245FK, which shares identical logical functions but may differ in physical packaging dimensions and weight compared to the standard SOP version.

Replacement Considerations

Direct substitutes include the TC74LCX245FT and TC74LCX245FK. These parts maintain pin and function compatibility with the 74 series 245 type.