SG Micro Corp

SGM8740 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator


The SGM8740 is a single high-speed comparator optimized for systems powered from a 3V or 5V supply. The device features high-speed response, low-power consumption, and rail-to-rail input range. Propagation delay is 45ns, while supply current is only 155μA.

The input common mode range of the SGM8740 extends beyond both power supply rails. The output pulls to within 0.1V of either supply rail without external pull-up circuitry, making the device ideal for interface with both CMOS and TTL logics. All input and output pins can tolerate a continuous short-circuit fault condition to either rail. Internal hysteresis ensures clean output switching, even with slow-moving input signals.

The SGM8740 is available in Green SOT-23-5 and SC70-5 packages. It is rated over the -40 to +85 temperature range.



• Fast, 45ns Propagation Delay (10mV Overdrive)

• Low Power Consumption:

   155μA (TYP) at VS = 3V

• Wide Supply Voltage Range: 2.7V to 5.5V

• Optimized for 3V and 5V Applications

• Rail-to-Rail Input Voltage Range

• Low Offset Voltage: 0.9mV (TYP)

• Internal Hysteresis for Clean Switching

• Output Swing to within 200mV from Rails with

   4mA Output Current

• CMOS/TTL-Compatible Output

• -40 to +85 Operating Temperature Range

• Available in Green SOT-23-5 and SC70-5 Packages


Line Receivers

Battery-Powered Systems

Threshold Detectors/Discriminators

3V/5V Systems

Zero-Crossing Detectors

Sampling Circuits


Part Number Status Package Pins Pb-Free Temp Range
SGM8740YN5G/TR Production SOT-23-5 5 Y -40℃ to +85℃ Samples
SGM8740YC5G/TR Production SC70-5 5 Y -40℃ to +85℃ Samples

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