Nexperia USA Inc. 74LVCH1T45GN,132

Overview

74LVCH1T45GN,132 from Nexperia is a single-bit, dual-supply translating transceiver with 3-state outputs and active bus hold, enabling bidirectional level translation between 1.2 V and 5.5 V domains (e.g., 1.8 V MCU ↔ 3.3 V peripheral). It features independent VCC(A) and VCC(B) supplies, DIR-controlled direction, IOFF for partial power-down, and operates from –40 °C to +125 °C in ultra-thin XSON6 (SOT1115) package.

For engineers reviewing the 74LVCH1T45GN,132 datasheet, 74LVCH1T45GN,132 pinout, 74LVCH1T45GN,132 application, or 74LVCH1T45GN,132 equivalent, key selection criteria include dual-rail voltage flexibility (1.2–5.5 V), suspend-mode high-impedance isolation during power-down, bus hold for floating inputs, 420 Mbps max data rate (3.3 V → 5.0 V), and ±24 mA drive at 3.0 V.

Technical Context

This device implements a bidirectional, direction-controlled data path where DIR determines signal flow: HIGH enables A→B translation, LOW enables B→A. Both ports are referenced to their respective supplies-A and DIR to VCC(A), B to VCC(B)-enabling true voltage domain bridging without external biasing.

The integrated IOFF circuit disables outputs when either VCC(A) or VCC(B) is at GND, preventing backflow current; active bus hold maintains valid logic states on unused A/B pins without external pull resistors, reducing BOM count and board space in low-pin-count interfaces.

Key Specifications

Pinout & Package

XSON6 package (SOT1115), 0.9 × 1.0 × 0.35 mm, no leads, 6-terminal exposed pad-less construction optimized for high-density PCB layouts and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AVC1T45DBVR and TXS0101DCKR, the 74LVCH1T45GN,132 uniquely combines bus hold, 420 Mbps performance, and strict –40 °C to +125 °C operation in the smallest XSON6 footprint-making it optimal for space-constrained, mixed-voltage embedded systems requiring robust floating-input handling and high-speed timing.

Availability

74LVCH1T45GN,132 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, low-power wearable MCU bridges, and server baseboard management systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVCH1T45GN,132 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, reliable, and energy-efficient components for automotive, industrial, mobile, and computing applications.

The 74LVCH1T45GN,132 belongs to Nexperia's LVC/LVCH logic family, engineered specifically for low-voltage, mixed-rail system interfacing with emphasis on robustness, minimal board area, and seamless integration into high-density PCB layouts.

FAQ

What is the minimum operating voltage for VCC(A) and VCC(B)?

The 74LVCH1T45GN,132 supports VCC(A) and VCC(B) down to 1.2 V per JEDEC JESD8-7 compliance. At 1.2 V, it delivers guaranteed VOL ≤ 0.07 V and VOH ≥ 1.09 V with 3 mA load, enabling interoperability with advanced ultra-low-power logic families such as ARM Cortex-M0+ I/O banks.

How does the bus hold function interact with external pull resistors?

The bus hold circuit actively maintains the last-valid logic state on A/B pins with ±100 μA drive strength at 4.5 V, overriding weak external pulls (<10 kΩ). External resistors should be omitted unless stronger biasing (>100 μA) is needed for noise immunity in high-EMI environments.

Can VCC(A) and VCC(B) be powered from different regulators with independent sequencing?

Yes - VCC(A) and VCC(B) may power up/down in any order. When either supply reaches GND, the IOFF circuit forces both ports into high-impedance OFF-state, preventing back-current flow and ensuring safe hot-swap or staggered power sequencing in modular systems.

Is the 74LVCH1T45GN,132 pin-compatible with the 74LVC1T45GN,132?

Yes - both share identical SOT1115 (XSON6) pinout, thermal profile, and footprint. The LVCH variant adds active bus hold and improved drive strength (±24 mA vs. ±20 mA), while maintaining full functional and mechanical compatibility for drop-in upgrades in existing designs.