SG Micro Corp

SGM8749 150ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator


The SGM8749 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 and open drain output. Propagation delay is 150ns, while supply current is only 22μA.

The input common mode range of the SGM8749 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.

The SGM8749 is available in Green SOT-23-5 and SC70-5 packages. It is rated over the -40 to +85 temperature range.



• Fast, 150ns Propagation Delay (10mV Overdrive)

• Low Power Consumption:

   22μA (TYP) at VS = 3V

• Wide Supply Voltage Range: 2.7V to 5.5V

• Optimized for 3V and 5V Applications

• Open Drain Output

• Rail-to-Rail Input Voltage Range

• Low Offset Voltage: 0.8mV (TYP)

• Output Swing 185mV with 4mA Output Current

• CMOS/TTL-Compatible Output

• -40 to +85 Operating Temperature Range

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



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
SGM8749YC5G/TR Production SC70-5 5 Y -40℃ to +85℃ Samples
SGM8749YN5G/TR Production SOT-23-5 5 Y -40℃ to +85℃ Samples

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