155ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail I/O Comparator
155ns, 3V/5V, Single-Supply, Low Power, Rail-to-Rail I/O Comparator

The SGM8746 is a single, high speed, low power comparator, which features a fast 155ns propagation delay. The device is optimized for low voltage operation on 3V or 5V supply, and consumes only 22μA supply current.

The SGM8746 supports rail-to-rail input and output operation. The input common mode voltage range is from -0.1V to (+VS) + 0.1V, and the output voltage swing is within 0.2V of the rails without external pull-up or pull-down resistor. The device can be compatible with CMOS and TTL logics. Any input or output pin has a continuous short-circuit protection to both power supply rails. The SGM8746 has an internal hysteresis for reducing comparator sensitivity to noise, even when the input signals move slowly.

The SGM8746 is available in Green SOT-23-5 and SC70-5 packages. It is rated over the -40 to +85 temperature range.



  • High Speed: 155ns Propagation Delay (10mV Overdrive)

  • Low Supply Current: 22μA (TYP) at VS = 3V

  • Low Offset Voltage: 0.8mV (TYP)

  • Rail-to-Rail Input and Output

  • Supply Voltage Range: 2.7V to 5.5V

  • Optimized for 3V and 5V Applications

  • Output Swing to within 190mV from Rails with 4mA Output Current

  • Supports CMOS or TTL Logic

  • Internal Hysteresis for Reducing Comparator Sensitivity to Noise

  • -40 to +85 Operating Temperature Range

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


3V or 5V Applications

Portable/Battery-Powered Equipment

Mobile Phones

Zero-Crossing Detectors

Threshold Detectors

Line Receiver Units

Part Number Status Package Pins Pb-Free Temp Range
SGM8746YN5G/TR Production SOT-23-5 5 Y -40℃ to +85℃ Samples
SGM8746YC5G/TR Production SC70-5 5 Y -40℃ to +85℃ Samples