Analog Devices Inc. LT6700IS6-2#TRMPBF

Overview

LT6700IS6-2#TRMPBF from Analog Devices is a micropower dual comparator with integrated 400mV reference, designed for low-voltage system monitoring. It features two inverting inputs, open-collector outputs rated to 18V, 6.5µA supply current at 5V, ±10nA max input bias current, and operates from 1.4V to 18V supply. It is used in battery voltage supervision and threshold detection circuits.

For engineers reviewing the LT6700IS6-2#TRMPBF datasheet, LT6700IS6-2#TRMPBF pinout, LT6700IS6-2#TRMPBF application, or LT6700IS6-2#TRMPBF equivalent, this part supports industrial temperature range (–40°C to 85°C), offers internal hysteresis (6.5mV typ), and enables level-translated output interfacing independent of supply voltage - critical for multi-rail power monitoring designs.

Technical Context

The LT6700IS6-2#TRMPBF implements two independent comparators, each with one externally accessible inverting input and the other internally tied to a precision 400mV reference. Its Over-The-Top® input architecture allows input voltages down to –0.3V and up to 18V regardless of VS, enabling ground-referenced or high-side sensing.

Both open-collector outputs sink ≥5mA over temperature and tolerate up to 18V off-state voltage. Internal hysteresis (6.5mV typical) eliminates external feedback components, simplifying design for stable switching in noisy environments like battery-powered instrumentation or industrial control inputs.

Key Specifications

Pinout & Package

Package: 6-lead TSOT-23 (S6), 1mm profile, RoHS-compliant, tape-and-reel (500 pcs).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator with reference applications.

Compared with LT6700IS6-1#TRMPBF, the LT6700IS6-2#TRMPBF provides matched inverting inputs ideal for dual low-side threshold detection, while TLV3702IDR lacks integrated reference and Over-The-Top® operation - making LT6700IS6-2#TRMPBF superior for compact, wide-input-range industrial monitoring.

Availability

LT6700IS6-2#TRMPBF is available at Aetrix Electronics and suitable for industrial control systems, battery-powered instrumentation, and automotive body electronics requiring stable component supply across extended temperature ranges.

Supply support for LT6700IS6-2#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LT6700 family was designed specifically for ultra-low-power, high-accuracy voltage monitoring in space- and energy-constrained systems - emphasizing integration, wide input range, and robust industrial temperature operation.

FAQ

What is the function of the internal 400mV reference in the LT6700IS6-2#TRMPBF?

The internal 400mV reference serves as the fixed comparison threshold for both comparators in the LT6700IS6-2#TRMPBF. Each comparator's non-inverting input is hardwired to this reference, while the external pins (–INA and –INB) provide inverting inputs. This architecture enables direct voltage monitoring against a stable, factory-trimmed reference without external components, delivering ±1.25% total threshold error at 25°C.

Can the LT6700IS6-2#TRMPBF operate with a 1.4V supply and still drive a 5V logic input?

Yes. The LT6700IS6-2#TRMPBF open-collector outputs can be pulled up to 5V (or up to 18V) independently of its 1.4V to 18V supply voltage (VS). When VS = 1.4V, OUTA and OUTB remain fully functional - sinking ≥5mA while tolerating 5V on the pull-up side. This level-shifting capability allows seamless interface between ultra-low-VS domains and standard logic rails.

What does "Over-The-Top® input" mean for the LT6700IS6-2#TRMPBF?

"Over-The-Top® input" means the LT6700IS6-2#TRMPBF accepts input voltages from –0.3V to 18V relative to GND - regardless of the VS supply voltage. For example, with VS = 1.4V, –INA and –INB can still reliably sense signals at 0V (ground), –0.2V, or 12V. This enables direct monitoring of battery negative terminals, floating sensors, or signals outside the supply domain - a key differentiator versus conventional comparators.

How does the internal hysteresis of the LT6700IS6-2#TRMPBF improve system reliability?

The LT6700IS6-2#TRMPBF integrates 6.5mV typical hysteresis to prevent output oscillation when input signals hover near the 400mV threshold due to noise or slow edges. This eliminates the need for external positive-feedback resistors, reduces PCB area and component count, and guarantees stable switching behavior in electrically noisy environments such as motor drives or industrial power supplies - directly enhancing long-term system robustness.

Is the LT6700IS6-2#TRMPBF pin-compatible with other variants like LT6700IS6-3#TRMPBF?

No. While all LT6700IS6-x variants share identical pinout and package (S6 TSOT-23), their input polarities differ: LT6700IS6-2#TRMPBF has two inverting inputs, LT6700IS6-3#TRMPBF has two noninverting inputs, and LT6700IS6-1#TRMPBF has one inverting and one noninverting input. Swapping them without circuit revision will invert logic behavior - e.g., an active-low alert becomes active-high - potentially causing system malfunction.