Texas Instruments LMV393QDRQ1

Overview

LMV393QDRQ1 from Texas Instruments is a dual, low-voltage, open-collector automotive-grade comparator operating from 2.7 V to 5.5 V, featuring 100 μA typical supply current, 200 mV typical output saturation voltage at 1 mA, and input common-mode range extending to ground. It serves as a precision signal-level decision element in battery-powered sensor interfaces and power management circuits.

For engineers reviewing the LMV393QDRQ1 datasheet, LMV393QDRQ1 pinout, LMV393QDRQ1 application, or LMV393QDRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, rail-to-rail input capability down to GND, low-power operation in automotive ambient temperatures (–40°C to 125°C), and compatibility with standard SOIC-8 PCB footprints.

Technical Context

The LMV393QDRQ1 implements two independent voltage comparators with internal biasing optimized for single-supply operation. Its input stage supports common-mode voltages from GND to VCC+ – 0.1 V at 2.7 V supply and up to VCC+ – 0.8 V at 5 V supply, enabling direct sensing of grounded reference signals.

Each comparator features an open-collector NPN output stage capable of sinking up to 23 mA at 2.7 V and 84 mA at 5 V, with typical saturation voltage of 200 mV at 1 mA load - supporting wired-OR logic, level translation, and pull-up flexibility across diverse interface standards.

Key Specifications

Pinout & Package

LMV393QDRQ1 is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, 3.91 mm × 4.90 mm body, and 1.75 mm max height - compatible with standard surface-mount assembly processes and IPC-7351 SOIC-8 land patterns.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-voltage comparator applications.

Compared with LMV393DR and TLV3702IDR, the LMV393QDRQ1 uniquely balances AEC-Q100 compliance, sub-100 μA quiescent current, and open-collector flexibility - making it the optimal choice for production automotive power supervision and sensor interface functions where reliability and efficiency are jointly critical.

Availability

LMV393QDRQ1 is available at Aetrix Electronics and suitable for battery management systems, sensor diagnostic circuits, LED driver control, and power sequencing supervisors requiring stable component supply across automotive production lifecycles.

Supply support for LMV393QDRQ1 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

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The LMV393-Q1 product line delivers low-voltage, low-power comparators specifically engineered for automotive subsystems where extended temperature operation, supply efficiency, and functional safety readiness are mandatory design requirements.

FAQ

What is the maximum operating temperature range for the LMV393QDRQ1?

The LMV393QDRQ1 is rated for operation from –40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This specification is validated across process corners and lot variations, and applies directly to the LMV393QDRQ1 in its SOIC-8 package under recommended operating conditions - including 2.7 V to 5.5 V supply and appropriate PCB thermal layout.

Does the LMV393QDRQ1 support rail-to-rail input operation?

The LMV393QDRQ1 supports input common-mode voltage down to GND but does not achieve full rail-to-rail input range - its upper limit is VCC+ – 0.1 V at 2.7 V supply and VCC+ – 0.8 V at 5 V supply. This behavior is explicitly specified in the Electrical Characteristics tables of the LMV393QDRQ1 datasheet and confirmed across temperature and voltage conditions.

Can the LMV393QDRQ1 outputs drive a 10 kΩ pull-up resistor to 5 V?

Yes, the LMV393QDRQ1 open-collector outputs can reliably sink current with a 10 kΩ pull-up to 5 V. At 25°C and 5 V supply, the output leakage current is ≤0.003 μA and saturation voltage remains ≤200 mV at 1 mA load - ensuring clean logic-low levels and minimal power dissipation in the LMV393QDRQ1 itself.

Is the LMV393QDRQ1 pin-compatible with the standard LM393?

No, the LMV393QDRQ1 is not pin-compatible with the LM393. While both are dual comparators in SOIC-8 packages, the LM393 uses a different pinout: LM393 assigns OUT1 to Pin 1, IN1– to Pin 2, IN1+ to Pin 3, GND to Pin 4, IN2+ to Pin 5, IN2– to Pin 6, OUT2 to Pin 7, and VCC+ to Pin 8 - identical to LMV393QDRQ1. However, the LMV393QDRQ1 datasheet confirms this exact mapping, and TI's official package drawings validate SOIC-8 pin alignment. Thus, LMV393QDRQ1 is functionally and physically pin-compatible with LM393 in layout, though electrical specs differ.

What is the typical propagation delay of the LMV393QDRQ1 at 3.3 V supply?

The LMV393QDRQ1 does not specify propagation delay at exactly 3.3 V in its datasheet; values are characterized at 2.7 V and 5 V only. At 2.7 V, tPHL is 350 ns (100 mV overdrive); at 5 V, it is 200 ns. Interpolation suggests ~275 ns typical at 3.3 V, but design-critical timing must use worst-case values from the 2.7 V column (600 ns tPHL max) or verify experimentally - as no guaranteed spec exists for 3.3 V in the LMV393QDRQ1 datasheet.