LM319M/NOPB

Overview

The LM319M/NOPB is a high-speed dual comparator manufactured by Texas Instruments, housed in a 14-pin SOIC surface-mount package. It operates on a single supply voltage ranging from 5V to 36V or dual supplies of ±2.5V to ±18V. The device features an open-collector output capable of driving up to 25mA and is compatible with RTL, DTL, and TTL logic families. Key electrical specifications include a typical response time of 80ns at ±15V, a maximum input offset voltage of 8mV, and a maximum input bias current of 1μA. The unit draws a typical operating supply current of 4.3mA and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• High-speed signal comparison with a typical response time of 80ns for rapid level detection applications.
• Open-collector output design allows direct interfacing with various logic families including TTL, DTL, and RTL.
• Wide single-supply voltage operation supports integration into systems powered between 5V and 36V.
• Strong drive capability enables direct connection to loads such as relays and indicators without additional circuitry.

Applications

• Fast analog-to-digital converter (ADC) synchronization
• Window comparator circuits
• Simple threshold detection systems

Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and electrical tolerances. Ensure the selected package variant matches the intended PCB layout requirements. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference the datasheet revision date to ensure all parameter limits are current before finalizing component selection.

Selection Notes

Select this component when system requirements demand fast propagation delay and wide common-mode voltage ranges. The open-collector output simplifies interface design with different logic levels. Consider the thermal dissipation capabilities of the SOIC-14 package relative to the ambient operating conditions. Verify that the required supply voltage falls within the specified 5V to 36V operational window for optimal performance.

Part Context

This device belongs to the LM319 series of general-purpose analog comparators produced by Texas Instruments. It serves as a standard solution for applications requiring quick decision-making based on analog input signals. The series is widely utilized in industrial control and consumer electronics where reliable signal thresholding is necessary.

Replacement Considerations

The LM319N/NOPB is a verified through-hole alternative within the same family. Verify pin compatibility and package dimensions before substituting surface-mount variants with through-hole versions in existing designs.