LT1394CMS8#TRPBF

Overview

The LT1394CMS8#TRPBF is a single-supply, ground-sensing comparator featuring UltraFast propagation delay of 7ns and low power consumption of 6mA. It operates from a single 5V or dual ±5V supply with input common mode range extending to the negative rail. The device includes complementary TTL/CMOS outputs and an internal latch for data retention. Key electrical parameters include a maximum input offset voltage of 2.5mV, 100dB common mode rejection ratio, and output current capability of 4mA.

Feature Summary

• UltraFast 7ns propagation delay with low 6mA power consumption
• Ground-sensing inputs allowing operation down to the negative supply rail
• Internal latch mechanism for retaining output states independent of input signals
• Complementary outputs designed for direct interface with TTL and CMOS logic

Applications

• High speed analog-to-digital converters
• Zero-crossing detectors
• Current sense circuits for switching regulators
• Extended range voltage-to-frequency converters
• Fast pulse height and width discriminators

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the CMS8 variant meets the commercial temperature range requirements of 0°C to 70°C as specified in the datasheet. Ensure compatibility with the MSOP-8 package footprint during PCB layout verification.

Selection Notes

Select this component for applications requiring high-speed comparison with minimal power draw. The ground-sensing input feature simplifies single-supply designs by eliminating the need for level shifting. The integrated latch reduces external component count for sampling circuits. Verify that the 7ns delay meets system timing constraints under expected overdrive conditions.

Part Context

This part belongs to the LT1394 family of comparators manufactured by Analog Devices Inc. It utilizes Linear Technology's 6GHz complementary bipolar process technology. The device is pin-compatible with industry standards such as the LT1016, LT1116, and LT1671, facilitating drop-in replacements in existing designs.

Replacement Considerations

LT1394CS8#PBF

FAQ

How does the LATCH pin function?

When the LATCH pin is held high, the outputs retain their state regardless of the input signals. When the pin goes low, new data appears at the output after approximately 6ns.

What is the input common mode range?

The input common mode range extends from 1.5V below the positive supply down to the negative supply rail, allowing ground sensing on single-supply systems.