Nexperia USA Inc. 74AVC2T45GD-Q100H

Overview

74AVC2T45GD-Q100 from Nexperia is a dual-bit, dual-supply voltage level translator/transceiver enabling bidirectional logic-level translation between independent 0.8 V–3.6 V domains. It features two I/O ports (1A/2A referenced to VCC(A), 1B/2B to VCC(B)), DIR-controlled direction, IOFF partial power-down, and AEC-Q100 Grade 1 qualification for automotive infotainment and ADAS domain controllers.

For engineers reviewing the 74AVC2T45GD-Q100 datasheet, 74AVC2T45GD-Q100 pinout, 74AVC2T45GD-Q100 application, or 74AVC2T45GD-Q100 equivalent, key selection criteria include dual-rail voltage flexibility (e.g., 1.2 V ↔ 3.3 V), 500 Mbit/s max data rate at 1.8–3.3 V, IOFF leakage < ±1 μA at VCC = 0 V, Suspend-mode high-impedance on both ports, and TSSOP8 (SOT505-2) package compatibility with automotive PCB layouts.

Technical Context

This device implements a dual-rail transceiver architecture where DIR selects signal flow direction: HIGH enables A→B translation, LOW enables B→A. Each port's input thresholds scale with its respective supply (VIH = 0.65×VCC, VIL = 0.35×VCC), ensuring robust noise immunity across mixed-voltage interfaces.

IOFF circuitry actively disables outputs when either VCC(A) or VCC(B) is at GND, preventing backflow current and enabling hot-swap capability in partial-power-down systems. Suspend mode forces both ports into high-impedance regardless of DIR state, critical for automotive ECU power sequencing compliance.

Key Specifications

Pinout & Package

74AVC2T45GD-Q100 uses the TSSOP8 (SOT505-2) package: plastic thin shrink small outline, 8 leads, 3 mm body width, 0.5 mm lead length, pin 1 indicator below marking code.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AVC2T45RSWR and TXS0102DCUR, the 74AVC2T45GD-Q100 uniquely combines AEC-Q100 Grade 1 qualification, 500 Mbit/s performance, and explicit DIR control-making it the only viable option for high-speed, safety-compliant automotive domain controller interconnects.

Availability

74AVC2T45GD-Q100 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS sensor fusion modules, and body control gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AVC2T45GD-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 delivering high-performance logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile markets with emphasis on reliability and energy efficiency.

The 74AVC2T45GD-Q100 belongs to Nexperia's automotive-qualified AVC logic family, engineered specifically for robust voltage translation in harsh-temperature, safety-critical vehicle subsystems.

FAQ

What is the minimum valid voltage difference between VCC(A) and VCC(B)?

No minimum voltage difference is required: VCC(A) and VCC(B) may be equal (e.g., both 1.8 V) or differ by up to 2.8 V (e.g., 0.8 V ↔ 3.6 V). The device operates correctly across the full 0.8 V–3.6 V range on each rail independently, as confirmed in Table 6 of the datasheet.

Can DIR be left floating in a static application?

No - DIR must be actively driven HIGH or LOW. The datasheet specifies no internal pull-up/down on DIR (Table 3), and floating inputs risk metastability, increased ICC, or undefined direction states. A 10 kΩ pull-up to VCC(A) is recommended for default A→B operation.

How does Suspend mode behave when only VCC(A) is powered?

When VCC(A) = 3.3 V and VCC(B) = GND, the device enters Suspend mode: both 1A/2A and 1B/2B ports go high-impedance regardless of DIR state. This is explicitly defined in Table 4 ("GND [3] X Z Z") and prevents backfeeding into the unpowered B-side domain.

Is the 74AVC2T45GD-Q100 compatible with 5 V-tolerant inputs?

No - absolute maximum input voltage is +4.6 V (Table 5), but recommended operating VI is 0–3.6 V. Inputs exceeding VCC(A) or VCC(B) by >0.3 V risk latch-up or degraded noise margin. For 5 V interfaces, an external series resistor or dedicated 5 V-tolerant translator is required.