Nexperia USA Inc. 74AVCH4T245D-Q100J

Overview

74AVCH4T245D-Q100 from Nexperia is an automotive-grade 4-bit dual-supply translating transceiver enabling bidirectional level translation between independent voltage domains (VCC(A) and VCC(B), each 0.8 V to 3.6 V). It supports two 2-bit or one 4-bit configuration, features active bus hold, IOFF partial power-down, and operates from −40 °C to +125 °C. Used in ADAS domain controllers for interfacing 1.2 V sensor interfaces with 3.3 V CAN/FlexRay communication subsystems.

For engineers reviewing the 74AVCH4T245D-Q100 datasheet, 74AVCH4T245D-Q100 pinout, 74AVCH4T245D-Q100 application, or 74AVCH4T245D-Q100 equivalent, key selection criteria include configurable direction control (nDIR), dual-rail 3-state output enable (nOE), bus hold elimination of external resistors, and AEC-Q100 Grade 1 qualification for under-hood automotive use.

Technical Context

This device implements a dual-voltage I/O architecture where nAn/nDIR/nOE pins reference VCC(A), while nBn pins reference VCC(B), enabling true bidirectional voltage translation without external biasing. The IOFF circuit enforces high-impedance outputs during partial power-down when either supply drops to GND, preventing backflow current.

Bus hold circuitry actively maintains valid logic levels on floating data inputs-eliminating pull-up/down resistors-with sustaining currents up to ±100 μA at 3.0 V. Suspend mode activates automatically if either VCC(A) or VCC(B) reaches GND, placing both port outputs in high-impedance OFF-state while preserving bus hold on the powered side.

Key Specifications

Pinout & Package

74AVCH4T245D-Q100 uses the SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with gull-wing leads suitable for automated optical inspection and reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply translating transceiver applications.

Compared with SN74AVCH4T245QPWRQ1 and 74LVC4T245PW-Q100, the 74AVCH4T245D-Q100 uniquely combines AEC-Q100 Grade 1, per-pin bus hold, and SO16 side-wettable flanks - making it optimal for space-constrained, high-reliability automotive modules requiring zero external termination.

Availability

74AVCH4T245D-Q100 is available at Aetrix Electronics and suitable for ADAS camera interfaces, infotainment SoC interconnects, and body control module bus isolation requiring stable component supply across extended temperature ranges.

Supply support for 74AVCH4T245D-Q100 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.

This device belongs to Nexperia's automotive-qualified AVCH logic family, designed specifically for robust, low-power voltage translation in harsh-temperature vehicle subsystems with stringent AEC-Q100 compliance.

FAQ

What is the maximum allowable voltage difference between VCC(A) and VCC(B)?

VCC(A) and VCC(B) may operate at any voltage between 0.8 V and 3.6 V independently, including identical or fully disparate values (e.g., 1.2 V ↔ 3.3 V). Absolute maximum ratings permit up to 4.6 V on either rail, but functional operation is guaranteed only within the 0.8 V–3.6 V range per supply.

Does the bus hold feature remain active during suspend mode?

Yes. When either VCC(A) or VCC(B) drops to GND, the device enters suspend mode and places all outputs in high-impedance OFF-state, but bus hold circuitry remains active on the powered-up side - ensuring floating inputs retain valid logic levels without external components.

Can nDIR and nOE be driven directly from a 3.3 V microcontroller when VCC(A) = 1.2 V?

No. nDIR and nOE inputs are referenced to VCC(A), so their VIH/VIL thresholds scale with VCC(A). Driving them from 3.3 V violates absolute maximum input voltage (VI ≤ VCC(A) + 0.5 V). A level-shifting buffer or resistor divider is required to limit input voltage to ≤1.7 V when VCC(A) = 1.2 V.

Is the SO16 package (SOT109-1) lead-free and RoHS compliant?

Yes. The 74AVCH4T245D-Q100 in SO16 packaging is lead-free, RoHS-compliant, and halogen-free per Nexperia's product specifications, meeting automotive environmental standards including ELV and REACH.