Diodes Incorporated 74LVC1G125QSE-7

Overview

74LVC1G125QSE-7 from Diodes Incorporated is an automotive-grade, single non-inverting buffer with 3-state output, designed for voltage-level shifting and signal isolation in mixed-voltage systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs regardless of V_CC, delivers ±24mA drive at 3.3V, and supports partial power-down via IOFF. It is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and packaged in SOT353.

For engineers reviewing the 74LVC1G125QSE-7 datasheet, 74LVC1G125QSE-7 pinout, 74LVC1G125QSE-7 application, or 74LVC1G125QSE-7 equivalent, key selection criteria include 3-state enable timing (t_EN/t_DIS ≤ 7.0 ns at 3.3V), IOFF leakage (±2 μA), input overvoltage tolerance, and SOT353 thermal resistance (θ_JA = 385°C/W).

Technical Context

This device implements a CMOS-based single-channel buffer with active-low output enable (OE), enabling bidirectional bus control in automotive and industrial logic interfaces. Its IOFF circuitry ensures zero-current backflow during power-down, satisfying IATF 16949-compliant system-level power sequencing requirements.

The logic function is strictly non-inverting (Y = A when OE = LOW), with propagation delay (t_PD) as low as 2.1 ns at 3.3V and 25°C. Input thresholds are V_IH ≥ 0.7×V_CC and V_IL ≤ 0.3×V_CC across full supply range, ensuring robust noise margin in noisy automotive environments.

Key Specifications

Pinout & Package

74LVC1G125QSE-7 is housed in a 5-pin SOT353 (SC-70) package measuring 2.15 mm × 2.10 mm × 1.10 mm with 0.65 mm lead pitch and matte tin-plated leads compliant with MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-state buffer applications.

Compared with SN74LVC1G125DBVR and NXPI 74LVC1G125GV, the 74LVC1G125QSE-7 uniquely combines AEC-Q100 Grade 1 qualification, SOT353's minimal footprint (2.15 × 2.1 mm), and MSL1 handling - making it the only choice for space-constrained, thermally demanding automotive modules requiring zero rework risk.

Availability

74LVC1G125QSE-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and programmable logic controller (PLC) I/O expansion requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for 74LVC1G125QSE-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-reliability solutions for automotive, industrial, and computing markets with ISO/TS 16949 and IATF 16949 certifications.

The 74LVC logic family targets low-voltage, mixed-signal interface applications requiring wide V_CC range, 5V-tolerant inputs, and robust ESD performance - specifically engineered for automotive infotainment, ADAS, and body electronics.

FAQ

What is the maximum allowable input voltage when V_CC = 1.8V?

The 74LVC1G125QSE-7 supports input voltages up to 5.5V regardless of V_CC level, verified per datasheet Section "Absolute Maximum Ratings" and "Recommended Operating Conditions." This allows safe interfacing with 5V signals even when powered from 1.8V, eliminating external level-shifting components in mixed-voltage designs.

Does this device support hot insertion in live backplanes?

Yes - its IOFF circuitry actively disables outputs during power-down, limiting backfeed current to ±2 μA (per datasheet Section "Electrical Characteristics"). This meets IEC 61000-4-2 and AEC-Q100 requirements for hot-swap compatibility in modular automotive and industrial systems with staggered power sequencing.

What is the typical propagation delay at 2.5V supply?

At V_CC = 2.5V and T_A = +25°C, typical propagation delay (t_PD) is 2.2 ns (min 0.5 ns, max 7.0 ns), per Table "Switching Characteristics" in the DS39797 datasheet. This value remains stable across –40°C to +125°C, supporting deterministic timing in engine control units and transmission controllers.

Is the SOT353 package RoHS and halogen-free compliant?

Yes - the 74LVC1G125QSE-7 is fully RoHS 3 compliant (2015/863/EU) and halogen-free, containing <900 ppm bromine, <900 ppm chlorine (<1500 ppm total Br+Cl), and <1000 ppm antimony, as certified in Diodes Incorporated's "Green" product definition documentation and confirmed in the datasheet Notes 1–3.