SN74AVCH16T245GR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AVCH16T245GR is a 16-bit dual-supply noninverting bus transceiver with configurable level-shifting and tri-state outputs. It supports VCCA and VCCB supply voltages ranging from 1.2 V to 3.6 V, enabling universal bidirectional translation between 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V nodes. The device features overvoltage-tolerant inputs and outputs up to 4.6 V, active bus-hold circuitry, and Ioff support for partial-power-down mode. Maximum data rates reach 380 Mbps at 1.8 V to 3.3 V level-shifting. It is housed in a TSSOP-48 package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configurable dual-rail design allows independent operation of ports across the full 1.2 V to 3.6 V power-supply range.
• Overvoltage-tolerant inputs and outputs enable mixed voltage-mode data communications without external protection.
• Active bus-hold circuitry maintains valid logic states on unused or undriven inputs, eliminating the need for external pullup or pulldown resistors.
• Ioff circuitry disables outputs during partial-power-down to prevent damaging current backflow through the device.

Buffers, Drivers, Receivers, Transceivers Applications

• Personal electronics
• Industrial systems
• Enterprise infrastructure
• Telecommunications equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'GR' corresponds to the TSSOP-48 package variant when sourcing. Confirm that the required operating temperature range aligns with the specified -40°C to +85°C limits. Ensure that the target application utilizes compatible supply voltages within the 1.2 V to 3.6 V range for both VCCA and VCCB rails to maintain functional integrity.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring asynchronous communication between data buses with varying voltage levels. The device is suitable for applications needing high-speed translation up to 380 Mbps. Consider the TSSOP-48 package constraints regarding board space and thermal dissipation. Verify that control pins DIR and OE are driven by VCCA-referenced signals to ensure proper direction and isolation control.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74AVCH16T245 family of 16-bit dual-supply bus transceivers. It is part of Texas Instruments' AVCH logic series, designed for low-voltage applications. The GR suffix indicates the TSSOP-48 package option. The component serves as a bridge for data transfer between different voltage domains in complex electronic systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AVCH16T245DGG

Buffers, Drivers, Receivers, Transceivers FAQ

How does the VCC isolation feature function?

If either VCCA or VCCB input is at GND, both ports enter a high-impedance state. This prevents false logic levels from being presented to either bus.

What is the purpose of the active bus-hold circuitry?

The active bus-hold circuitry holds unused or undriven inputs at a valid logic state. This eliminates the need for external pullup and pulldown resistors.