Nexperia USA Inc. 74CBTLV1G125GV-Q1H

Overview

74CBTLV1G125GV-Q1H from Nexperia is a single-channel, automotive-qualified bus switch IC with active-low output enable control, 5 Ω typical ON-resistance at 3.3 V, IOFF partial power-down protection, and operation from -40 °C to +125 °C. It enables bidirectional signal routing in low-voltage data paths such as I²C, SMBus, and GPIO expansion in ADAS domain controllers and body electronics modules.

For engineers reviewing the 74CBTLV1G125GV-Q1H datasheet, 74CBTLV1G125GV-Q1H pinout, 74CBTLV1G125GV-Q1H application, or 74CBTLV1G125GV-Q1H equivalent, key selection criteria include its rail-to-rail switching capability, Schmitt-trigger input tolerance for slow-edge signals, AEC-Q100 Grade 1 qualification, and guaranteed 0.25 ns propagation delay at 3.3 V.

Technical Context

This device implements a single-pole single-throw (SPST) CMOS transmission gate controlled by an active-low OE input. Its IOFF circuitry actively disables the switch and blocks backflow current when VCC = 0 V, enabling hot-swap and partial power-down system architectures.

The Schmitt-trigger input on OE provides hysteresis (typically 0.3 V) to reject noise on enable lines, while the 5 Ω RON ensures minimal signal attenuation across A–B ports under 64 mA load. Switch capacitance remains below 10.3 pF in ON-state, supporting >260 MHz -3 dB bandwidth at 3.3 V.

Key Specifications

Pinout & Package

74CBTLV1G125GV-Q1H uses the SC-74A (SOT753) surface-mount package: plastic, 5-lead, 1.3 mm × 1.7 mm body, 0.95 mm lead pitch, and 0.25 mm lead thickness. Pin 1 (OE) is located at the lower-left corner beneath the "b25" top-side marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus switch applications.

Compared with SN74LVC1G3157DRYR, the 74CBTLV1G125GV-Q1H delivers certified automotive reliability and IOFF safety, while outperforming it in speed (0.16 ns vs. 3.5 ns tpd) and ON-resistance (4.2 Ω vs. 6.5 Ω). Unlike 74LVC1G125GV-Q1, it provides true bidirectional analog pass-through rather than unidirectional logic buffering.

Availability

74CBTLV1G125GV-Q1H is available at Aetrix Electronics and suitable for automotive body electronics, ADAS sensor interfaces, infotainment GPIO expansion, and electric power steering diagnostic isolation requiring stable component supply across extended temperature ranges.

Supply support for 74CBTLV1G125GV-Q1H 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 logic, analog, and MOSFET solutions, with leadership in automotive-qualified discrete and logic devices.

The 74CBTLV1G125GV-Q1H belongs to Nexperia's automotive bus switch product line, engineered specifically for signal routing in harsh-environment vehicle networks where IOFF protection, AEC-Q100 compliance, and nanosecond timing are mandatory.

FAQ

What is the maximum allowable voltage on the OE pin when VCC = 2.3 V?

The OE input is overvoltage tolerant up to 3.6 V regardless of VCC level. This allows direct interfacing with 3.3 V control signals even when the switch operates at 2.3 V, eliminating level-shifter requirements in mixed-voltage systems.

Does the 74CBTLV1G125GV-Q1H support hot-plug operation?

Yes - its IOFF circuitry actively disables the switch and limits backflow current to ±10 μA when VCC = 0 V, enabling safe insertion/removal in live-backplane systems such as modular ADAS ECUs without disrupting other subsystems.

Can this device pass analog signals like audio or sensor outputs?

Yes - it provides rail-to-rail analog switching with 5 Ω RON and <10.3 pF ON-capacitance, making it suitable for DC-coupled analog signals up to 263 MHz, including PWM dimming control, thermistor voltage dividers, and low-speed sensor outputs.

How does the Schmitt-trigger action on OE improve system robustness?

The Schmitt-trigger provides ~0.3 V hysteresis on the OE input, rejecting noise spikes and slow-rising signals that could cause metastability or unintended switching during power-up, EMI events, or long PCB trace routing - critical in automotive harness environments.