SG Micro Corp

SGM8742 45ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator


The SGM8742 is a dual 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 currentis only 305μA.

The input common mode range of the SGM8742 extends beyond both power supply rails.The outputs pull 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 SGM8742 is available in Green SOIC-8 and MSOP-8 packages. It is rated over the-40 to +85temperature range.



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

• Low Power Consumption:

   305μA (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 Outputs

• -40 to +85 Operating Temperature Range

• Available in Green SOIC-8 and MSOP-8 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
SGM8742YS8G/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples
SGM8742YMS8G/TR Production MSOP-8 8 Y -40℃ to +85℃ Samples

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