TC74VCX245FTEL

Overview

The TC74VCX245FTEL is a low-voltage octal bus transceiver manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 1.2 V to 3.6 V, supporting systems at 1.5 V, 1.8 V, 2.5 V, or 3.3 V. The device features bidirectional data transmission controlled by DIR inputs and high-impedance isolation via OE inputs. It provides 3.6-V tolerant inputs and outputs with power-down protection. Propagation delay ranges from 3.5 ns (max) at 3.0–3.6 V to 42.0 ns (max) at 1.2 V. Output currents are ±24 mA (min) at 3.0 V. It is housed in a TSSOP20 package.

Feature Summary

• Bidirectional interface capability between 2.5 V and 3.3 V signals
• 3.6 V tolerant function on all inputs and outputs
• Power-down protection provided on all pins
• Protection circuits against static discharge on all inputs

Applications

• Low-voltage (3.3 V) system applications
• Interfacing between 2.5 V and 3.3 V signal domains
• High-speed asynchronous communication between data busses

Procurement Notes

Verify the manufacturing date when sourcing this component, as the extended operating temperature range specification (-40 °C to 125 °C) applies exclusively to units produced after April 2020. Confirm that the specific ordering suffix matches the required packaging format, such as cut tape or reel, to ensure compatibility with automated assembly processes. Always consult the latest official datasheet for any updates to absolute maximum ratings or reliability guidelines before finalizing procurement specifications.

Selection Notes

Select the TC74VCX245FTEL for designs requiring operation across a wide voltage spectrum from 1.2 V to 3.6 V. Ensure the application environment does not exceed the specified propagation delays at the lowest operating voltages if timing constraints are critical. Verify that unused inputs are tied to VCC or GND to maintain stable logic states. Consider the thermal derating requirements if the ambient temperature exceeds 85 °C, as power dissipation limits decrease significantly in higher temperature ranges.

Part Context

This component belongs to the TC74VCX series of CMOS digital integrated circuits. It is designed as a high-performance octal bus transceiver utilizing silicon monolithic technology. The device achieves high-speed operation while maintaining low power dissipation typical of CMOS logic families. It serves as a bridge for data transfer between different voltage domains in modern electronic systems.

Replacement Considerations

Public confirmed substitute part numbers: None identified.