Analog Devices Inc. LTC2960HTS8-1

Overview

LTC2960HTS8-1 from Analog Devices (formerly Linear Technology) is a nano-current, high-voltage two-input voltage supervisor IC designed for battery and regulator monitoring in harsh environments. It features 850nA quiescent current, ±1.5% threshold accuracy over –40°C to 125°C, adjustable ADJ/IN+ reset thresholds via external resistive dividers, 15ms/200ms selectable reset timeout, and 36V open-drain RST/OUT outputs. It is used in automotive battery management systems to detect undervoltage conditions before deep discharge.

For engineers reviewing the LTC2960HTS8-1 datasheet, LTC2960HTS8-1 pinout, LTC2960HTS8-1 application, or LTC2960HTS8-1 equivalent, key selection criteria include its ultra-low ICC at 36V supply, dual-comparator architecture with IN+ input configuration, TSOT-23-8 package thermal performance (qJA = 195°C/W), and compatibility with 36V open-drain logic interfacing in high-temperature automotive designs.

Technical Context

The LTC2960HTS8-1 implements two independent comparators: one monitors the ADJ input for reset generation with 2.5% hysteresis, and the second monitors IN+ for auxiliary status signaling with 5% hysteresis. Its internal 400mV reference enables precise threshold setting across temperature.

It supports manual reset assertion via MR input (logic low active), reset timeout selection via RT pin (GND = 15ms, VCC = 200ms), and operates with VCC from 2.5V to 36V while maintaining guaranteed output behavior down to VCC ≥ 1.2V. The TSOT-23-8 package enables compact placement in space-constrained battery packs.

Key Specifications

Pinout & Package

Package: 8-lead Plastic TSOT-23 (ThinSOT™), 2.9mm × 1.6mm footprint, exposed pad not present (unlike DFN variant). Thermal resistance qJA = 195°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with MAX6326UT29D3+T and TPS3808G33DBVR, the LTC2960HTS8-1 uniquely delivers dual adjustable thresholds, 36V open-drain outputs, and sub-1µA ICC at full 36V/125°C - making it the only option capable of replacing two discrete supervisors in high-voltage, high-temperature battery systems without compromising runtime or thermal margin.

Availability

LTC2960HTS8-1 is available at Aetrix Electronics and suitable for automotive battery management, industrial sensor nodes, and security system backup power requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LTC2960HTS8-1 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 acquired Linear Technology in 2017 and maintains its precision analog and power management portfolio. Linear Technology was founded in 1981 and pioneered high-performance analog ICs for demanding applications.

The LTC2960HTS8-1 belongs to Linear's nano-power voltage supervisor family, engineered specifically for battery-critical systems where ultra-low quiescent current, wide input voltage range, and automotive-grade reliability are mandatory design requirements.

FAQ

What is the maximum input voltage the LTC2960HTS8-1 can monitor on the ADJ pin?

The ADJ pin has an absolute maximum rating of –0.3V to 3.5V. To monitor higher voltages (e.g., 12V or 24V rails), a resistive divider must scale the input so the voltage at ADJ remains within this range. For example, a 30:1 divider reduces a 30V rail to 1V at ADJ - well within specification and preserving 1.5% threshold accuracy over temperature.

Does the LTC2960HTS8-1 support manual reset deassertion with a push-button switch?

Yes. The MR pin is logic-low active and internally biased with a 1µA current source. A momentary push-button switch between MR and GND asserts reset; releasing the button allows MR to rise above its 0.4V–1.4V threshold, triggering the selected reset timeout period before RST returns high. No external pull-up resistor is required.

Can the LTC2960HTS8-1 be used to monitor both overvoltage and undervoltage conditions simultaneously?

No - the LTC2960HTS8-1 variant uses the IN+ input, which only detects falling thresholds (undervoltage). For overvoltage detection, the LTC2960HTS8-2 (IN– variant) is required. However, the LTC2960HTS8-1 can monitor two separate undervoltage events: one on ADJ (system reset) and one on IN+ (e.g., low-battery warning).

What is the purpose of the RT pin on the LTC2960HTS8-1, and how should it be configured?

The RT pin selects the reset timeout period: connect RT to GND for 15ms, or to VCC for 200ms. This pin replaces DVCC in the -1/-2 variants and has no supply function. Configuration is static at power-up; changing RT during operation does not alter the active timeout period until the next reset event.

How does the LTC2960HTS8-1 behave when VCC drops below 1.2V?

When VCC falls below 1.2V, the LTC2960HTS8-1 guarantees RST and OUT remain low, ensuring fail-safe reset assertion even during severe brown-out. Below 1.2V, output logic states are not guaranteed, but the device maintains forced low outputs to prevent undefined microcontroller behavior - a critical feature for automotive safety compliance.