74AVC4TD245BQ,115

Overview

The Nexperia 74AVC4TD245BQ,115 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), an output enable input (OE), and dual supply pins (VCC(A) and VCC(B)). Both supplies operate between 0.8 V and 3.6 V, supporting translation among low voltage nodes including 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V. The device complies with JEDEC standards JESD8-12 through JESD8-B. Maximum data rates range from 100 Mbit/s to 380 Mbit/s depending on voltage levels. It includes IOFF circuitry for partial power-down applications and supports suspend mode when either supply is at GND.

Feature Summary

• Configurable bidirectional level translation between multiple low voltage nodes using independent A and B port supplies
• IOFF circuitry prevents damaging backflow current during partial power-down conditions
• Suspend mode isolates buses effectively when one supply rail is grounded
• High ESD protection exceeding 8000 V HBM Class 3B and 1000 V CDM Class C3

Applications

• Partial power-down applications requiring isolation of powered-down sections
• Systems translating between mixed low voltage logic nodes such as 1.2 V, 1.8 V, and 3.3 V
• Bidirectional bus interfaces in portable electronics and industrial control systems

Procurement Notes

Verify the ordering suffix

Selection Notes

Select this component when designing systems requiring bidirectional translation between disparate low voltage domains within the 0.8 V to 3.6 V range. Ensure that the application utilizes individual DIRn controls for per-bit direction management rather than a single global direction pin. Confirm that the PCB layout accommodates the DHVQFN16 package dimensions and thermal requirements specified in the datasheet.

Part Context

This part belongs to the 74AVC4TD245 family of 4-bit dual supply translating transceivers manufactured by Nexperia. It is distinct from standard bus transceivers like the 74AVC245 due to its dedicated dual-supply architecture enabling direct voltage level shifting without external resistors or additional components. The BQ variant specifically denotes the DHVQFN16 package option.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.