LT1712IGN#PBF

Overview

The LT1712IGN#PBF is a dual UltraFast comparator featuring rail-to-rail inputs and complementary outputs. It operates on single supplies from 2.4V to 12V or dual supplies of ±2.4V to ±6V. Propagation delay is 4.5ns at 20mV overdrive. Inputs extend 100mV beyond rails without phase reversal. Outputs sink/source 10mA directly to TTL/CMOS logic. Each channel includes an internal latch with hysteresis for data retention. The device is housed in a 16-lead narrow SSOP package.

Feature Summary

• Rail-to-rail input common mode range extending beyond supply rails
• Complementary rail-to-rail outputs compatible with TTL and CMOS logic
• Internal output latch with built-in hysteresis for noise immunity
• Phase reversal protection for inputs exceeding supply limits

Applications

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

Procurement Notes

Verify the suffix IGN#PBF corresponds to the industrial temperature range (-40°C to 85°C) and lead-free RoHS compliance. Confirm the GN package designation matches the 16-lead narrow SSOP physical footprint required for your PCB layout. Ensure power supply decoupling meets high-speed design guidelines to maintain signal integrity.

Selection Notes

Select this component when dual-channel comparison with latching capability is required. It is suitable for systems needing rail-to-rail input flexibility and direct logic interfacing. Consider the 4.5ns propagation delay for high-speed timing applications. Verify that the 16-lead SSOP package fits the available board space compared to the single-channel MSOP alternative.

Part Context

This part belongs to the LT1711/LT1712 family of UltraFast comparators designed for 3V, 5V, and -5V operation. The LT1712 specifically provides two independent channels in a compact 16-lead SSOP package. It shares features like rail-to-rail inputs and output latches with its single-channel counterpart, the LT1711.

Replacement Considerations

LT1711CMS8#TRPBF (Single Channel)

FAQ

How does the latch pin function?

Holding the LATCH ENABLE pin high retains the current output state regardless of subsequent input changes. The pin has built-in hysteresis to prevent oscillation from noisy signals.

What happens if inputs exceed the supply rails?

The inputs can extend up to 100mV beyond the supply rails without causing phase reversal. Schottky clamp diodes protect the internal circuitry during excessive overdrive conditions.