74AVCA164245VRE4

Overview

The SN74AVCA164245 is a 16-bit dual-supply noninverting bus transceiver with configurable voltage translation and 3-state outputs. It features two independent power rails, VCCA and VCCB, each accepting supply voltages from 1.4 V to 3.6 V. The device supports asynchronous bidirectional data transmission between buses based on the DIR input level. Control inputs are referenced to VCCA. It includes DOC circuitry for dynamic drive capability equivalent to standard outputs with ±24 mA current at 2.5 V VCC. The part operates over a temperature range of -40 °C to +85 °C.

Feature Summary

• Dual-rail design allows universal low-voltage bidirectional translation between any 1.5-V, 1.8-V, 2.5-V, or 3.3-V nodes.
• DOC circuitry dynamically changes output impedance to reduce noise without speed degradation.
• IOFF circuitry supports partial-power-down mode by disabling outputs to prevent damaging backflow currents.

Applications

• Asynchronous communication between data buses
• Mixed-voltage-mode data communications
• Partial-power-down applications

Procurement Notes

Verify the specific package type (TVSOP DGV) against the required PCB footprint. Confirm that the E4 suffix indicates lead-free material compliance. Ensure the operating environment stays within the specified -40 °C to +85 °C range. Check that control pins are supplied by VCCA as required for proper logic referencing.

Selection Notes

Select this component when interfacing buses with different supply voltages within the 1.4 V to 3.6 V range. It is suitable for designs requiring high-speed translation with minimal propagation delay. Consider the TVSOP package constraints if space is limited. Verify that the system does not require higher drive currents than the ±24 mA specification provides.

Part Context

This device belongs to the Texas Instruments Widebus family. It is designed specifically for mixed-voltage environments where multiple logic families operate at different supply levels. The dual-supply architecture eliminates the need for external level-shifting components in many configurations.

Replacement Considerations

SN74AVCA164245VRG4 is a verified lead-free alternative within the same product line.