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Analog Devices MAX942AUA+T — Analog & Data Acquisition

MAX942AUA+T Dual Comparator, 80ns, 8-uMAX/uSOP

MPNMAX942AUA+T
End of Life

Maxim Integrated MAX942AUA+T, General Purpose dual comparator, 80ns propagation delay, 2.7V to 5.5V supply, CMOS/Push-Pull/TTL output, 8-uMAX/uSOP, -40°C to 125°C.

$6.25Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX942AUA+T specifications
ParameterValue
TypeGeneral Purpose
Output typeCMOS, Push-Pull, TTL
MountingSurface Mount
Voltage - input offset3mV @ 5.5V
Voltage - supply, single (Dual (±))2.7V ~ 5.5V
Current - quiescent600µA
Current - input bias0.15µA @ 5.5V
Operating temperature-40°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
CMRR, PSRR81.94dB CMRR, 81.94dB PSRR
Number of elements2
Propagation delay80ns

Product details

80 ns propagation delay — what it buys the loop

Its 80 ns propagation delay (max) sets the upper bound for zero-crossing detection, overcurrent latch response, and PWM loop bandwidth — fast enough for most sensor threshold and signal-recovery circuits running below a few MHz. The CMOS, push-pull, or TTL output options let it drive logic inputs directly without a pull-up resistor, saving a BOM line.

The 600 µA max quiescent current per channel keeps the power budget tight for battery-powered or current-loop designs. Input offset voltage is 3 mV max at 5.5 V, and input bias current stays under 0.15 µA — both adequate for general-purpose threshold detection where sub-mV precision isn't required.

The 81.94 dB typical CMRR and PSRR reject common-mode and supply noise across the temperature range, so threshold accuracy holds up in electrically noisy environments where ground bounce or rail ripple is a given.

Package and rework — 8-uMAX/uSOP

The 8-MSOP/TSSOP footprint is common, and the body is small enough to fit tight layouts but large enough to hand-place and reflow without a microscope.

Frequently asked questions

What is the closest pin-compatible alternative to MAX942AUA+T?

Within the same Maxim family, the MAX942 is the base part number; the MAX942AUA+T is the tape-and-reel variant in the 8-uMAX package. Pin-compatible siblings with different speed or power grades exist (e.g., MAX942CPA in DIP, or MAX942ESA in SOIC), but the 8-uMAX footprint is specific to the UA suffix. For a direct drop-in, stick with the MAX942AUA base — the T suffix is just packaging.