LM311PWG4

Overview

The LM311PWG4 is a high-speed differential comparator manufactured by Texas Instruments, housed in an 8-TSSOP package. It operates within a supply voltage range of ±1.75 V to ±15 V (up to 30 V single-ended). Key electrical specifications include a maximum average input bias current of 0.25 µA and a maximum input offset voltage of 10,000 µV. The device supports open-collector outputs compatible with various logic families including TTL, MOS, and ECL. It functions as a single-channel amplifier circuit with an operating temperature range of 0°C to 70°C.

Feature Summary

• Provides high-speed differential comparison capabilities for signal processing applications.
• Features open-collector outputs that allow flexible interfacing with diverse logic families such as TTL, MOS, and ECL.
• Supports operation from low single-supply voltages down to 3.5 V or dual supplies up to ±15 V.

Applications

• Zero-crossing detection circuits
• Voltage monitoring systems
• Logic level shifting interfaces

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet specifications. Confirm the package type is TSSOP-8 and the suffix indicates lead-free and RoHS compliance. Ensure the operating temperature range matches the required application environment. Cross-reference the ordering part number with the manufacturer's current product status to confirm availability and end-of-life status before finalizing procurement decisions.

Selection Notes

Select this component when a high-speed comparator with flexible output drive capabilities is required. The open-collector output allows for wired-OR configurations and easy interface with different voltage levels. Consider the input offset voltage and bias current specifications for precision requirements. The TSSOP package is suitable for space-constrained surface-mount designs compared to through-hole alternatives like DIP.

Part Context

This part belongs to the LM311 family of comparators, which are industry-standard devices known for their versatility and speed. The 'G4' suffix typically denotes lead-free and RoHS-compliant manufacturing processes. It serves as a direct replacement for older non-compliant versions while maintaining identical pinout and electrical performance characteristics defined in the original LM311 specification.

Replacement Considerations

The LM311DRE4 is a documented substitute offering identical functionality in an SOIC-8 package. Verify pin compatibility and thermal performance differences between TSSOP and SOIC packages during substitution. Other LM311 variants may share electrical specs but differ in packaging or compliance status.