LM311PWRG4

Overview

The LM311PWRG4 is a high-speed differential comparator manufactured by Texas Instruments, housed in an 8-TSSOP package. It operates within a supply voltage range of 3.5V to 30V (single) or ±1.75V to ±15V (dual). Key electrical specifications include a maximum input offset voltage of 10mV and a typical output current capability of 50mA. The device features a maximum average bias current of 0.25µA at ±15V and supports a wide common-mode input voltage range. It is designed for applications requiring fast response times and robust performance across the commercial temperature range of 0°C to 70°C.

Feature Summary

• Differential comparison with strobe functionality for precise timing control
• Open-collector/open-emitter output compatible with DTL, MOS, RTL, and TTL logic families
• High speed operation suitable for demanding signal processing tasks
• Wide single or dual power supply voltage tolerance

Applications

• Voltage level detection and threshold monitoring
• Zero-crossing detection circuits
• Logic interface conversion between different voltage domains
• Fast analog-to-digital converter front-ends

Procurement Notes

Verify the component authenticity by checking the manufacturer's marking code against official datasheets. Confirm the package type matches the 8-TSSOP specification and ensure the suffix G4 indicates lead-free and RoHS compliance as per Texas Instruments standards. Cross-reference the part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a high-speed comparator with strobe inputs is required. Ensure the application voltage does not exceed the 30V absolute maximum rating. Consider the open-collector output nature for pull-up resistor requirements. Verify that the 0°C to 70°C operating temperature range meets the environmental constraints of the target system.

Part Context

This part belongs to the LM311 family of comparators, which are industry-standard devices known for their versatility and speed. The LM311 series offers a balance of performance and cost-effectiveness, widely used in industrial and consumer electronics. The PWRG4 suffix specifically denotes the TSSOP package and green (RoHS/lead-free) compliant manufacturing process.

Replacement Considerations

Direct pin-compatible replacements include the LM311DR and LM311N, though package differences exist. For equivalent performance in surface-mount applications, verify compatibility with other LM311 variants from Texas Instruments or qualified second-source manufacturers offering similar speed and output drive characteristics.