Skip to main content
Log in
Analog Devices LMX331HAXK — Analog & Data Acquisition

LMX331HAXK comparador de uso geral, saída open-drain, SC-70-5

MPNLMX331HAXK
End of Life

Texas Instruments LMX331HAXK, comparador de uso geral, 1 elemento, saída open-drain, atraso de propagação de 600ns, alimentação de 1,8V a 5,5V, encapsulamento SC-70-5, de -40°C a 125°C.

$0.53Ref. price · indicative, final on quote
Analog Devices LMX331HAXK datasheet (PDF)
Packaging5-TSSOP, SC-70-5, SOT-353
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LMX331HAXK specifications
ParameterValue
TypeGeneral Purpose
Output typeOpen-Drain
MountingSurface Mount
Voltage - input offset7mV @ 5V
Voltage - supply, single (Dual (±))1.8V ~ 5.5V
Output current73mA @ 5V
Current - quiescent120µA
Current - input bias0.25µA @ 5V
Operating temperature-40°C ~ 125°C
PackageBulk
Hysteresis2mV
Case5-TSSOP, SC-70-5, SOT-353
CMRR, PSRR70dB PSRR
Number of elements1
Propagation delay600ns (Typ)

Product details

Principais especificações e o que significam na bancada

A histerese de 2mV é interna, então você não precisa de resistores externos de realimentação positiva para uma comutação limpa em sinais de variação lenta — economiza alguns componentes passivos no BOM. A tensão de offset de entrada máxima é de 7mV a 5V, o que define o erro prático do limiar de detecção; para uma referência de 100mV, isso representa uma incerteza de 7%, portanto faça a margem de acordo. A corrente quiescente máxima é de 120µA, baixa o suficiente para nós de sensores alimentados por bateria que acordam periodicamente.

Encapsulamento e montagem — fácil de substituir em campo

O encapsulamento SC-70-5 (também conhecido como SOT-353) é um encapsulamento de montagem em superfície com cinco terminais.

Ciclo de vida e fornecimento — sem relógio LTB correndo

Frequently asked questions

Where can I buy the LMX331HAXK and get a price?

The LMX331HAXK is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — stock and price are confirmed at quote time.

What is the closest pin-compatible alternative to the LMX331HAXK?

The LMV331 in the same SC-70-5 package is a common pin-compatible alternative. The LMX331HAXK offers a wider supply range (1.8V to 5.5V vs 2.7V to 5.5V for the LMV331) and a slightly faster 600ns propagation delay versus 450ns typical for the LMV331, but both are general-purpose single comparators with open-drain outputs. Verify your voltage and speed margins before substituting.

What is the LMX331HAXK propagation delay and typical application circuit?

Propagation delay is 600ns typical. A typical application is a simple overvoltage or undervoltage detector: connect the non-inverting input to a reference voltage (e.g., from a resistor divider), the inverting input to the signal, and add a pull-up resistor on the output to your logic rail. The 2mV internal hysteresis keeps the output clean on slow edges.

Can I substitute the LMX331HAXK for the LMV331 in my circuit?

Yes, the LMX331HAXK is a drop-in replacement for the LMV331 in the SC-70-5 package if your circuit can tolerate the slightly slower 600ns propagation delay (vs 450ns typical for LMV331). The LMX331 also runs down to 1.8V, which gives you extra headroom for low-voltage designs. Check the input offset voltage and hysteresis specs against your threshold accuracy needs.

What is the difference between open-drain and push-pull output?

An open-drain output (like the LMX331HAXK) can only sink current to ground; it needs an external pull-up resistor to the desired logic voltage to produce a high level. This lets you level-shift the output to a higher voltage than the comparator's supply. A push-pull output drives both high and low internally, so no pull-up is needed, but you cannot wire-OR multiple outputs together without contention. Open-drain is preferred for mixed-voltage systems and shared interrupt lines.