LP311PS

Overview

The LP311PS is a single low-power strobed differential comparator manufactured by Texas Instruments. It features an open-collector output and operates within a supply voltage range of ±5V to ±18V or +5V to +36V. The device includes dedicated strobe inputs for controlling the output state, allowing the output to be held in a high-impedance condition when disabled. Key electrical characteristics include a maximum input offset voltage of 10mV and a typical response time of 200ns. It is housed in an 8-pin plastic small outline (PS) package.

Feature Summary

• Incorporates dedicated strobe control inputs to manage output enablement and disable states
• Features open-collector outputs compatible with various logic families and voltage levels
• Designed for low power consumption applications compared to standard comparators

Applications

• Voltage monitoring systems requiring precise threshold detection
• Logic level conversion circuits between different voltage domains
• Operational amplifier circuit replacement where strobing capability is needed

Procurement Notes

Verify the specific suffix code on the component marking to confirm the exact variant, as suffixes may indicate lead-free status or tape-and-reel packaging. Ensure the procurement source provides official datasheets confirming the PS package dimensions and electrical specifications match the design requirements. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a single comparator with strobe functionality is required for low-power designs. Consider the open-collector output nature when designing pull-up resistor networks. Evaluate the supply voltage range to ensure compatibility with the system's power rails. Compare the response time and offset voltage against application timing constraints.

Part Context

The LP311PS belongs to the LM311 family of comparators, which are industry-standard devices known for their versatility and performance. This specific variant utilizes the PS package, a narrow-body small outline package suitable for surface-mount applications. The family offers a balance of speed, power consumption, and ease of use for general-purpose comparison tasks.