Texas Instruments TXV0108QWRGYRQ1

Overview

TXV0108QWRGYRQ1 from Texas Instruments is an AEC-Q100 qualified 8-bit direction-controlled dual-rail voltage translator with independent VCCA (1.14–3.6 V) and VCCB (1.14–3.6 V) supplies, supporting up to 500 Mbps data rate, < ±400 ps channel-to-channel skew, and RGMII 2.0 compliance for Ethernet MAC-PHY redriving in automotive ADAS domain controllers.

For engineers reviewing the TXV0108QWRGYRQ1 datasheet, TXV0108QWRGYRQ1 pinout, TXV0108QWRGYRQ1 application, or TXV0108QWRGYRQ1 equivalent, key selection criteria include dual-supply voltage translation capability, RGMII timing compliance (≤750 ps rise/fall time, ≤±5% duty cycle distortion), wettable-flank VQFN-24 package for AOI-compatible solder joint inspection, and Ioff/VCC isolation for partial-power-down safety in asynchronous power-up systems.

Technical Context

The TXV0108QWRGYRQ1 implements a symmetric dual-rail CMOS transceiver architecture where A-port I/Os (A1–A8) and control pins (DIR, OE) are referenced to VCCA, while B-port I/Os (B1–B8) are referenced to VCCB. Directional data flow (A→B or B→A) is controlled by DIR level, and tri-state output enable/disable is managed via OE referenced to VCCA.

It integrates 10Ω damping resistors per output to suppress signal reflections, delivers up to 12 mA drive strength at 3.6 V, and achieves 390 ps peak-to-peak jitter (1.8–3.3 V) with optimized rise/fall symmetry. VCC isolation forces all I/Os into high-impedance when either supply drops below ~100 mV or floats, preventing backflow during power sequencing.

Key Specifications

Pinout & Package

TXV0108QWRGYRQ1 is housed in a wettable-flank 24-pin VQFN package (RGY), measuring 5.5 mm × 3.5 mm, with exposed thermal pad (recommended grounded) for enhanced thermal dissipation in high-density automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage translation applications.

Compared with SN74AVC8T245RGLR and TXS0108EJRVR, TXV0108QWRGYRQ1 uniquely combines AEC-Q100 qualification, VCC isolation, RGMII 2.0 timing validation, and wettable-flank packaging-making it the only drop-in solution for automotive Ethernet redriving where power sequencing safety and AOI-verifiable assembly are non-negotiable.

Availability

TXV0108QWRGYRQ1 is available at Aetrix Electronics and suitable for medium-range radar modules, ADAS domain controllers, and HVAC controller designs requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.

Supply support for TXV0108QWRGYRQ1 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with decades of expertise in high-reliability interface solutions.

The TXV0108QWRGYRQ1 belongs to TI's automotive-qualified voltage translation portfolio, engineered specifically for RGMII redriving in safety-critical ADAS and zonal E/E architectures where timing precision, power sequencing resilience, and manufacturability are paramount.

FAQ

What is the maximum data rate supported by TXV0108QWRGYRQ1?

TXV0108QWRGYRQ1 supports up to 500 Mbps when translating between 1.65 V and 3.6 V supplies. For full RGMII 2.0 compliance-including rise/fall time (<750 ps), duty cycle distortion (<±5%), and channel skew (<±400 ps)-operation is specified at 250 Mbps. This dual-rate capability allows system designers to select speed based on timing margin requirements while using the same device footprint.

Does TXV0108QWRGYRQ1 support asymmetric voltage translation?

Yes, TXV0108QWRGYRQ1 fully supports asymmetric translation: VCCA and VCCB can be independently set from 1.14 V to 3.6 V, enabling combinations such as 1.2 V ↔ 2.5 V, 1.8 V ↔ 3.3 V, or 2.5 V ↔ 3.3 V. The device's symmetric dual-rail design ensures matched propagation delay and skew regardless of rail pairing, making it ideal for heterogeneous SoC-to-PHY interfacing in automotive ECUs.

How does the VCC isolation feature work in TXV0108QWRGYRQ1?

VCC isolation in TXV0108QWRGYRQ1 forces all A- and B-port I/Os into high-impedance when either VCCA or VCCB drops to or near 0 V-preventing current backflow during power-down or fault conditions. This behavior is hardware-enforced and requires no external control. It is distinct from Ioff, which operates during partial power-down with one supply active; VCC isolation activates even if both supplies are unpowered.

Is TXV0108QWRGYRQ1 compatible with standard RGMII 2.0 implementations?

Yes, TXV0108QWRGYRQ1 is explicitly designed and tested to meet RGMII 2.0 specifications: <750 ps rise/fall time, <±5% duty cycle distortion, and <±400 ps channel-to-channel skew at 250 Mbps. TI's datasheet provides measured values across VCCA/VCCB combinations and temperature extremes, confirming interoperability with industry-standard Ethernet PHYs such as DP83867IR and KSZ9031RN.

What is the purpose of the wettable flank in the RGY package of TXV0108QWRGYRQ1?

The wettable flank in the TXV0108QWRGYRQ1's RGY (VQFN-24) package provides extended vertical sidewall metallization that promotes visible solder fillet formation during reflow. This enables automated optical inspection (AOI) to verify solder joint quality-critical for zero-defect manufacturing in automotive electronics where field reliability is non-negotiable. TI specifies this feature to support IPC-A-610 Class 3 compliance.