74AVC4TD245PW,118

Overview

The 74AVC4TD245PW is a 4-bit dual supply translating transceiver with configurable voltage translation and 3-state outputs. It features eight 1-bit input-output ports (An and Bn), four direction control inputs (DIR1–DIR4), and an output enable input (OE). Dual supply pins VCC(A) and VCC(B) support voltages from 0.8 V to 1.95 V or 1.1 V to 3.6 V, enabling translation between 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V nodes. The device operates within a temperature range of -40 °C to +125 °C.

Feature Summary

• Bidirectional level translation between multiple low-voltage supply nodes
• Configurable direction control for each bit via DIR inputs
• IOFF circuitry prevents damaging backflow current during partial power-down
• Suspend mode isolates buses when either supply is at GND level

Applications

• Partial power-down applications requiring IOFF protection
• Bidirectional data bus translation between different voltage domains
• Systems requiring configurable transmission direction per bit
• Interfaces needing bus isolation via active-low output enable

Procurement Notes

Verify the ordering suffix ,118 against the manufacturer's official documentation to confirm package type and temperature range specifications. Ensure the procurement source provides valid traceability for the SOT403-1 TSSOP16 package. Cross-reference the part number with the latest product data sheet revision to confirm compliance with current JEDEC standards and ESD ratings before finalizing orders.

Selection Notes

Select this component when bidirectional translation is required between specific low-voltage logic families such as 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The individual direction control inputs allow flexible data flow management. Consider the IOFF feature if the design requires safe operation during partial power-down states without external blocking diodes.

Part Context

This device belongs to the Nexperia 74AVC4TD series of translating transceivers. It is designed for high-speed bidirectional data transfer between circuits operating at different supply voltages. The 74AVC4TD245PW specifically offers four independent direction controls, distinguishing it from single-direction variants in the same family.

FAQ

How does the device handle partial power-down conditions?

The integrated IOFF circuitry disables the outputs to prevent damaging backflow current through the device when it is powered down.

What determines the direction of data transmission?

Transmission direction is controlled by the DIR1 through DIR4 inputs; a HIGH level allows transmission from An to Bn, while a LOW level allows transmission from Bn to An.