Nexperia USA Inc. 74LVCH1T45GS,132

Overview

74LVCH1T45GS,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 I/O to 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 SOT1202 (XSON6) package.

For engineers reviewing the 74LVCH1T45GS,132 datasheet, 74LVCH1T45GS,132 pinout, 74LVCH1T45GS,132 application, or 74LVCH1T45GS,132 equivalent, key selection criteria include dual-rail voltage flexibility (1.2–5.5 V), suspend-mode high-impedance behavior during power-down, bus-hold input stabilization, 210 Mbps max data rate (3.3 V → 3.3 V), and ±24 mA output drive at 3.0 V.

Technical Context

This device implements a bidirectional, direction-controlled data path where A and DIR are referenced to VCC(A), while B is referenced to VCC(B); a HIGH on DIR enables A→B transmission, LOW enables B→A. The IOFF circuit disables outputs and blocks backflow current when either supply is at GND, ensuring safe partial power-down operation.

Active bus hold maintains unused A/B inputs at valid logic levels without external pull resistors, reducing board space and system power. Propagation delays range from 0.7 ns (DIR→A at 5.0 V) to 48.6 ns (tPZH at worst-case –40 °C/+125 °C, 1.5 V→1.5 V), with timing fully characterized across all VCC combinations and temperature extremes.

Key Specifications

Pinout & Package

XSON6 package (SOT1202): ultra-thin 1.0 × 1.0 × 0.35 mm body, no leads, 6-terminal exposed pad design optimized for high-density PCB layouts and thermal performance in space-constrained applications.

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 74LVCH1T45GS,132 uniquely combines bus hold, full 1.2–5.5 V dual-rail support, IOFF, and industrial temperature range - making it the only choice for robust, maintenance-free level translation in mixed-voltage embedded systems requiring zero external components.

Availability

74LVCH1T45GS,132 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical wearable sensor hubs, and 5G small cell baseband interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LVCH1T45GS,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, and consumer applications.

The 74LVCH series targets low-voltage, high-speed logic interfacing in space-constrained and thermally demanding environments, emphasizing robustness, minimal external component count, and seamless integration across heterogeneous voltage domains.

FAQ

What is the minimum recommended supply voltage for reliable bus hold operation?

Bus hold remains functional down to VCC(A) = 1.4 V, providing ≥15 μA holding current at VI = 0.49 V. Below 1.4 V, holding strength degrades; for guaranteed operation across –40 °C to +125 °C, maintain VCC(A) ≥1.65 V per JEDEC JESD8-5 compliance.

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

Yes - the device supports independent power sequencing. When VCC(A) = 0 V and VCC(B) = 3.3 V, IOFF limits A-port leakage to ±2 μA, and B port remains fully operational. This enables safe hot-plug of subsystems without risk of backfeed or latch-up.

How does suspend mode affect signal integrity on unused A/B pins?

In suspend mode (VCC(A) = 0 V or VCC(B) = 0 V), both A and B ports enter high-impedance OFF-state with IOZ ≤±2 μA. Bus hold is disabled, so external termination is required only if signal integrity must be maintained during power-down - unlike active operation where bus hold sustains logic levels.

Is the 74LVCH1T45GS,132 compatible with 1.2 V LVTTL and 5.0 V TTL logic families simultaneously?

Yes - inputs accept up to 5.5 V regardless of VCC, and outputs swing rail-to-rail within their respective VCC domain. Driving a 5.0 V TTL input from VCC(B) = 5.0 V yields VOH ≥4.4 V (min), satisfying TTL VIH ≥2.0 V, while 1.2 V LVTTL inputs on A side are safely driven with VIH ≥0.8×VCC(A) = 0.96 V.