TPCMP251-S5TR

Comparators Overview

The TPCMP251-S5TR is a single-channel, low-power comparator manufactured by 3PEAK in an SOT23-5 package. It operates on a supply voltage ranging from 2.5 V to 5.5 V with a quiescent current of 50 μA per channel. The device features a propagation delay of 120 ns and includes internal hysteresis for clean switching. Input offset voltage is ±4 mV maximum, while the input common-mode range extends 100 mV beyond the power rails. It utilizes a push-pull output stage capable of rail-to-rail swing and supports an operating temperature range from −40°C to +125°C.

Comparators Feature Summary

• Low-power operation with 50 μA quiescent current per channel
• Internal hysteresis eliminates output switching caused by input noise
• Push-pull output supporting rail-to-rail output swing
• Input common-mode range extends 100 mV beyond the power rails

Comparators Applications

• Peak and zero-crossing detectors
• Threshold detectors and discriminators
• Sensing at the ground or supply line
• Logic level shifting or translation
• IR receiver circuits

Comparators Procurement Notes

Verify the specific ordering suffix matches the required package type, as the TPCMP251 series is available in multiple configurations including SOT23-5, SC70-5, SOP8, and MSOP8. Confirm that the selected variant aligns with the intended PCB layout constraints and thermal requirements. Ensure compatibility with the system's voltage levels and signal integrity needs before finalizing procurement decisions.

Comparators Selection Notes

Select this component when designing circuits requiring high-speed response combined with minimal power consumption. The internal hysteresis makes it suitable for noisy environments without external components. Consider the push-pull output capability if driving loads directly is necessary, and verify that the extended common-mode input range meets the sensing requirements relative to the supply rails.

Comparators Part Context

The TPCMP251 belongs to the TPCMP25x family of comparators designed for general-purpose applications. This family emphasizes a balance between speed and power efficiency, making it appropriate for portable and battery-operated devices. The single-channel configuration provides flexibility for space-constrained designs while maintaining robust performance characteristics across a wide temperature range.

Comparators Replacement Considerations

The datasheet identifies TPCMP251U-S5TR as a related part number within the same family, distinguished by different marking information but sharing identical electrical specifications and pinout.

Comparators FAQ

How does the internal hysteresis function in the TPCMP251?

The internal hysteresis prevents output oscillation caused by input noise voltage by creating a difference between the trip points for rising and falling signals, ensuring clean switching transitions.

What is the input common-mode voltage range?

The input common-mode voltage range extends 100 mV below the negative supply rail and 100 mV above the positive supply rail, allowing for sensing at both ground and supply lines.