Toshiba Expands Low-Voltage Bus Transceiver Portfolio

As embedded processors continue shifting toward lower operating voltages, system designers increasingly require reliable level conversion between modern low-voltage SoCs and conventional industrial or consumer electronics interfaces. In this context, Toshiba Electronics Europe GmbH expanded its 74AVC dual-supply bus transceiver family with new 1-bit and 2-bit devices designed for high-speed bidirectional voltage translation.

Level conversion for mixed-voltage embedded systems
The new product lineup includes four 1-bit devices — 74AVC1T45NX, 74AVCH1T45NX, 74AVC1T45FU, and 74AVCH1T45FU — along with two 2-bit devices, the 74AVC2T45FK and 74AVCH2T45FK.

The transceivers support bidirectional level conversion between voltage domains as low as 0.7V or 0.8V and systems operating up to 3.6V without requiring additional external conversion circuitry. The devices are intended for mixed-voltage communication environments commonly found in industrial automation, consumer electronics, and enterprise systems.

Target applications include UART, GPIO, and SPI communication interfaces where low-voltage processors must communicate reliably with peripherals or subsystems operating at higher logic levels.

Push-pull architecture for high-speed communication
The new devices use a push-pull buffer architecture designed to support high-speed signal transmission. Toshiba stated that the transceivers support dual power supplies without restrictions on power-on or power-off sequencing, simplifying system-level power management design.

The 74AVC series uses directional control through DIR pins together with high-impedance control mechanisms tied to the power supply pins. This configuration helps prevent signal conflicts on shared communication lines and reduces the risk of malfunction during startup or shutdown conditions.

The 74AVCH series additionally integrates an internal bus-hold function that stabilizes logic states when signals become undefined. This approach can reduce the need for external pull-up and pull-down resistors while improving signal retention stability in embedded communication systems.

Compact packaging for space-constrained electronics
In addition to existing 4-bit products available in TSSOP16B packaging, the new devices are offered in smaller package formats including pinless XSON6 and pin-equipped SOT-363 (US6) and SOT-765 (US8) packages.

The compact package options are intended for applications where PCB area constraints and high-density layouts are important design considerations, particularly in portable electronics, industrial control modules, and compact embedded systems.

Toshiba stated that the expanded low-voltage logic IC portfolio is intended to support evolving embedded system requirements and improve power efficiency in next-generation electronic designs.

Edited by Aishwarya Mambet, Induportals Editor, with AI assistance.

www.toshiba.com