Diodes Incorporated AZV331KSTR-G1

Overview

AZV331KSTR-G1 from Diodes Incorporated is a single general-purpose low-voltage comparator operating from 2.5V to 5.5V supply, featuring 60µA typical supply current, 200mV typical output saturation voltage, and open-collector output - optimized for battery-powered portable electronics including notebooks, PDAs, and mobile communication systems.

For engineers reviewing the AZV331KSTR-G1 datasheet, AZV331KSTR-G1 pinout, AZV331KSTR-G1 application, or AZV331KSTR-G1 equivalent, key selection criteria include supply current vs. temperature stability, input common-mode range extending to ground, propagation delay under 400ns at 100mV overdrive, and SC-70-5 package compatibility with space-constrained PCB layouts.

Technical Context

The AZV331KSTR-G1 uses a BiCMOS process with bipolar input and output stages, delivering improved noise immunity versus standard CMOS comparators while maintaining ultra-low quiescent current. Its input stage supports rail-to-rail common-mode operation down to ground, enabling direct sensing of low-side current shunts or battery voltage monitoring without level-shifting.

The open-collector output allows flexible pull-up configuration (e.g., to higher voltage rails or logic families), supporting mixed-voltage system interfacing. Propagation delay is specified from 200ns (high-to-low, 100mV overdrive, VCC=5V) to 1000ns (10mV overdrive, VCC=2.7V), confirming deterministic timing behavior across supply and signal conditions.

Key Specifications

Pinout & Package

AZV331KSTR-G1 is supplied in the SC-70-5 package (2.0 × 2.2 mm, 0.65 mm pitch), approximately half the footprint of SOT-23-5. This ultra-compact outline supports high-density portable PCB designs while maintaining thermal performance up to 150°C junction temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV331IDBVR and TLV331DBVR, AZV331KSTR-G1 uniquely balances ultra-low 60µA supply current, ground-sensing input, and open-collector output - making it optimal for space-constrained, battery-sensitive designs requiring flexible logic interfacing without added components.

Availability

AZV331KSTR-G1 is available at Aetrix Electronics and suitable for notebook power management, portable medical sensors, and mobile communication baseband monitoring requiring stable component supply across extended production cycles.

Supply support for AZV331KSTR-G1 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 analog ICs, specializing in high-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

AZV331 belongs to Diodes' general-purpose analog comparator product line, designed specifically for cost-sensitive, space-constrained portable electronics where low voltage, low power, and SC-70 packaging are primary system requirements.

FAQ

Is AZV331KSTR-G1 pin-compatible with LMV331?

Yes, AZV331KSTR-G1 is explicitly specified as a pin-for-pin compatible replacement for LMV331 in SC-70-5 and SOT-23-5 packages. Pin 1 (IN+), Pin 2 (GND), Pin 3 (IN−), Pin 4 (VCC), and Pin 5 (OUTPUT) match identically. No PCB redesign is needed for drop-in substitution.

What is the maximum sink current capability of the open-collector output?

The AZV331KSTR-G1 output can sink up to 23mA at VCC = 2.7V and VO ≤ 1.5V, and up to 84mA at VCC = 5V under the same condition. The 200mV typical saturation voltage at 1mA ensures robust logic LOW drive into standard TTL/CMOS loads.

Does AZV331KSTR-G1 support rail-to-rail input operation?

No - the input common-mode voltage range is specified from –0.1V to 2.0V at VCC = 2.7V and –0.1V to 4.2V at VCC = 5V. While it includes ground (enabling true single-supply use), it does not extend to the positive rail; the upper limit is typically VCC – 0.8V.

Can AZV331KSTR-G1 be used in oscillator circuits?

Yes - the datasheet provides validated one-shot multivibrator and square-wave oscillator reference designs using external RC networks and feedback. Propagation delay consistency (200–1000ns) and low input bias current (<250nA) ensure stable frequency generation in kHz-range timing applications.