LM2901BYDT

Overview

The LM2901BYDT is an automotive-grade, low-power quad voltage comparator manufactured by STMicroelectronics. It features four independent comparators in a SOIC-14 package. The device operates from a single supply of 2 V to 36 V or dual supplies of ±1 V to ±18 V. Key electrical parameters include a maximum response time of 1 µs, a typical input offset voltage (Vos) of 5 mV, and a maximum input bias current (Ib) of 250 nA. It draws 2 mA of operating supply current and provides 22 mA output current per channel. The component is qualified under AEC-Q100 standards and functions within a temperature range of -40°C to +150°C.

Feature Summary

• Automotive grade qualification compliant with AEC-Q100 standards for reliability
• Wide single supply voltage operation ranging from 2 V to 36 V
• Low power consumption with minimal supply current independent of voltage
• Outputs compatible with TTL, DTL, ECL, MOS, and CMOS logic families

Applications

• Automotive electronic systems requiring high reliability
• Voltage monitoring circuits in low-power applications
• Signal conditioning for analog-to-digital conversion interfaces
• Threshold detection in battery management systems

Procurement Notes

Verify the specific suffix 'BY' against the manufacturer's official documentation to confirm it denotes the automotive grade and SOIC-14 package variant. Ensure the order matches the required AEC-Q100 qualification status. Cross-reference the datasheet revision to confirm the exact pinout and electrical characteristics for the BYDT designation before finalizing procurement.

Selection Notes

Select this component when designing for automotive environments that demand wide supply voltage tolerance and low quiescent current. The SOIC-14 surface-mount package facilitates automated assembly. Consider the 1 µs response time and 5 mV offset voltage for precision requirements. Verify thermal performance within the -40°C to +150°C operating range for the intended application environment.

Part Context

This part belongs to the LM2901B series, which represents an enhanced version of the standard LM2901. The B-grade offers improved electrical characteristics and a higher maximum operating voltage compared to previous iterations. The LM2901 family is designed for general-purpose voltage comparison tasks where low power and wide supply range are critical constraints.

Replacement Considerations

The LM2901DT serves as a non-automotive equivalent within the same series. Verify if the automotive qualification and extended temperature range up to +150°C are mandatory for the design. Other variants like LM2901BYPT offer different packaging options.