Nexperia USA Inc. 74LVCH2T45GM,125

Overview

74LVCH2T45GM,125 from Nexperia is a dual-bit, dual-supply translating transceiver with 3-state outputs enabling bidirectional level translation between 1.2 V and 5.5 V domains. It features independent VCC(A) and VCC(B) supplies, DIR-controlled data direction (A↔B), IOFF partial power-down protection, and active bus hold on I/O pins. Used in mixed-voltage FPGA-to-ASIC interconnects requiring voltage domain bridging without external logic.

For engineers reviewing the 74LVCH2T45GM,125 datasheet, 74LVCH2T45GM,125 pinout, 74LVCH2T45GM,125 application, or 74LVCH2T45GM,125 equivalent, this page delivers verified electrical specs, package mapping to XSON8 (SOT1116), thermal limits up to +125 °C, and real-world translation performance across 1.2–5.5 V node pairs - critical for low-power IoT sensor hubs and automotive body control modules.

Technical Context

This device implements a dual-port bidirectional buffer architecture with separate supply references: port A (1A/2A/DIR/VCC(A)) and port B (1B/2B/VCC(B)) operate independently within 1.2 V–5.5 V ranges. Direction control is synchronous and edge-transparent - DIR HIGH enables A→B transmission; DIR LOW enables B→A transmission.

The IOFF circuit disables outputs when either VCC(A) or VCC(B) = 0 V, preventing backflow current during partial power-down. Active bus hold maintains floating inputs at valid logic levels without external pull resistors, reducing board space and power in suspend-mode applications like battery-backed memory interfaces.

Key Specifications

Pinout & Package

XSON8 package (SOT1116), 1.2 mm × 1.0 mm × 0.35 mm body, no leads, 8-terminal surface-mount construction optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AVCH2T245RSWR and TXS0102DCUR, the 74LVCH2T45GM,125 uniquely supports full 1.2–5.5 V translation, integrated bus hold, IOFF, and automotive-grade -40 °C to +125 °C operation - making it the sole option for robust, mixed-voltage, high-reliability embedded systems.

Availability

74LVCH2T45GM,125 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, IoT edge sensor hubs, and FPGA configuration interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LVCH2T45GM,125 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 standard logic, analog, and MOSFET solutions for automotive, industrial, and mobile markets.

The 74LVCH2T45GM,125 belongs to Nexperia's LVC/LVCH family of advanced low-voltage CMOS translators - engineered specifically for robust mixed-voltage interconnect in safety-critical and thermally demanding environments.

FAQ

Can 74LVCH2T45GM,125 translate between 1.2 V and 5.0 V simultaneously?

Yes. VCC(A) can be set to 1.2 V while VCC(B) is set to 5.0 V, enabling bidirectional translation with guaranteed timing (max tPLH = 23.6 ns at -40 °C to +125 °C). Inputs tolerate up to 5.5 V regardless of supply, and outputs drive full rail-to-rail logic levels per respective VCC.

What happens to the outputs when VCC(A) = 0 V and VCC(B) = 3.3 V?

The device enters suspend mode: both port A and port B outputs go to high-impedance OFF-state. The IOFF circuit ensures zero backflow current from VCC(B) into the unpowered A-side, protecting downstream 3.3 V circuitry during partial power-down sequences.

Does the bus hold feature eliminate all external pull resistors?

Yes - for unused or floating data inputs (1A, 2A, 1B, 2B), the internal bus hold maintains valid HIGH or LOW states without external components. DIR has no bus hold and requires external biasing if left unconnected.

Is the 74LVCH2T45GM,125 pin-compatible with 74LVC2T45 variants?

Yes - both share identical XSON8 (SOT1116) pinout and function. The 'H' suffix denotes enhanced bus hold capability; non-H versions lack this feature but are electrically and mechanically interchangeable in layouts where bus hold is not required.