LT1711IMS8#TRPBF

Overview

The LT1711IMS8#TRPBF is a single UltraFast comparator from Analog Devices, housed in an 8-lead MSOP package. It features rail-to-rail inputs and complementary outputs compatible with TTL/CMOS logic. The device operates on a single supply from 2.4V to 12V or dual supplies of ±2.4V to ±6V. Key electrical parameters include a typical propagation delay of 4.5ns at 20mV overdrive, a maximum input offset voltage of 6mV, and a positive supply current of 19mA at 5V. It includes an internal latch for data retention and supports a maximum toggle frequency of 100MHz.

Feature Summary

• UltraFast response with rail-to-rail input common mode range extending beyond supply rails without phase reversal.
• Rail-to-rail matched complementary outputs capable of directly interfacing with TTL or CMOS logic circuits.
• Internal TTL/CMOS compatible output latch retains data when the latch pin is held high.
• Latch pin hysteresis provides protection against slow-moving or noisy latch signals.

Applications

• High-speed automatic test equipment
• Current sense for switching regulators
• Crystal oscillator circuits
• High-speed sampling circuits
• Window comparators

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging configuration distinct from tube variants. Confirm the IMS8 designation corresponds to the 8-lead MSOP package type. Ensure the 'I' grade meets the required -40°C to 85°C industrial temperature range specifications. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component for applications requiring sub-5ns propagation delays and rail-to-rail signal handling. The integrated latch feature simplifies digital interface requirements by retaining output states. Consider the 19mA supply current consumption relative to system power budgets. The wide supply voltage flexibility allows operation across various standard logic levels without level shifting components.

Part Context

This part belongs to the LT1711/LT1712 family of UltraFast comparators designed for ease of use in diverse systems. The LT1711 variant specifically offers a single channel solution in a compact MSOP footprint. It complements other high-speed analog devices like the LT1713 and LT1719, providing a balance between speed and functional integration such as latching capabilities.

Replacement Considerations

LT1711IMS8#PBF (Tube version)

FAQ

How does the input common mode range behave when signals exceed the supply rails?

The rail-to-rail input common mode range extends 100mV beyond both supply rails. Outputs are protected against phase reversal for inputs extending further beyond the rails, and input current does not significantly increase when taken to opposite rails.

What is the function of the LATCH ENABLE pin?

When the LATCH ENABLE pin is held high, the internal latch retains the current input data at the outputs. The pin has built-in hysteresis to protect against slow-moving or noisy latch signals.