BU7253F-E2

Comparators Overview

The BU7253F-E2 is a dual-channel analog comparator manufactured by ROHM Semiconductor, housed in an 8-SOP surface-mount package. It operates on a single supply voltage ranging from 1.8 V to 5.5 V or dual supplies of ±0.9 V to ±2.75 V. The device features open-drain outputs capable of sourcing 6 mA per channel and draws a typical operating current of 35 µA. Key electrical specifications include a maximum input offset voltage of 11 mV, input bias current of 1 pA, and a propagation delay of 750 ns. It provides 80 dB common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR), functioning within a temperature range of -40°C to +85°C.

Comparators Feature Summary

• Supports low-voltage operation with a wide supply range from 1.8 V to 5.5 V.
• Features extremely low input bias current for high-impedance signal interfacing.
• Provides open-drain output configuration suitable for various logic level translations.

Comparators Applications

• General-purpose signal comparison in low-power electronic circuits
• Voltage monitoring applications requiring minimal quiescent current
• Threshold detection systems utilizing open-drain output compatibility

Comparators Procurement Notes

Verify the specific ordering suffix to confirm packaging format, as variants exist for cut tape, reel, and MouseReel formats. Ensure the selected part matches the required thermal and electrical specifications for the target application environment. Confirm RoHS compliance status through official manufacturer documentation prior to integration into regulated products.

Comparators Selection Notes

Select this component when low supply voltage operation and minimal power consumption are critical design constraints. The open-drain output requires external pull-up resistors, which must be accounted for in the circuit design. Consider the 750 ns propagation delay for timing-sensitive applications and ensure the load current does not exceed the 6 mA output capability.

Comparators Part Context

This device belongs to the BU7253 series of CMOS comparators designed for low-voltage applications. It offers a dual-channel configuration in a compact SOP-8 package, distinguishing it from single-channel variants or higher-channel count devices. The series emphasizes low power consumption and high input impedance, making it suitable for battery-operated portable electronics.

Comparators Replacement Considerations

Direct substitutes within the same family include the BU7253SF-E2, which offers an extended operating temperature range up to +105°C while maintaining similar electrical characteristics. Verify pinout compatibility and thermal performance differences before substituting.