Analog Devices Inc. LTC2916ITS8-1#TRPBF

Overview

LTC2916ITS8-1#TRPBF from Analog Devices (acquired Linear Technology) is a precision voltage supervisor IC with fixed –5% tolerance, 9 selectable nominal thresholds (12V to 0.5V ADJ), and integrated manual reset input. It operates from 1.5V to 5.5V supply, consumes 30μA quiescent current, guarantees ±1.5% threshold accuracy over –40°C to 85°C, and delivers glitch-immune open-drain RST output for microprocessor reset in automotive control systems.

For engineers reviewing the LTC2916ITS8-1#TRPBF datasheet, LTC2916ITS8-1#TRPBF pinout, LTC2916ITS8-1#TRPBF application, or LTC2916ITS8-1#TRPBF equivalent, key selection criteria include its TSOT-23-8 package, MR pin support for push-button reset, internal 200ms timeout option, guaranteed RST assertion down to VCC = 0.8V, and operation up to 125°C ambient in H-grade variants.

Technical Context

The LTC2916ITS8-1#TRPBF implements a precision comparator-based monitoring architecture with three-state SEL1/SEL2 inputs selecting one of nine internally trimmed voltage thresholds, while its fixed –5% tolerance eliminates TOL pin configuration overhead. Its VM input accepts direct connection to monitored supplies or external resistive dividers for adjustable thresholds (e.g., 0.5V reference).

Glitch immunity is achieved via dual-stage filtering: a dedicated anti-glitch circuit requiring ≥10μs duration for >5% threshold deviation, plus an adjustable reset timeout (200ms internal or capacitor-programmable). The MR pin features a 100kΩ internal pull-up to VCC, enabling direct push-button interface without external components.

Key Specifications

Pinout & Package

Package: 8-Lead TSOT-23 (ThinSOT™), 3mm × 1.75mm footprint, 1mm profile, lead-free, tape-and-reel (TRPBF). Exposed pad not present in TSOT-23 variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2915ITS8-1#TRPBF, LTC2916ITS8-1#TRPBF trades TOL configurability for MR functionality-enabling field-service reset without firmware involvement-while maintaining identical threshold accuracy, package, and temperature range. Versus LTC2903CMS8-1#TRPBF, it provides 9× more threshold options and 2× tighter accuracy at higher voltages, justifying its use in complex multi-rail systems.

Availability

LTC2916ITS8-1#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, medical infusion pump controllers, and telecom base station power management requiring stable component supply across extended temperature ranges.

Supply support for LTC2916ITS8-1#TRPBF 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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2916ITS8-1#TRPBF belongs to ADI's Linear Technology legacy voltage supervisor product line, engineered for high-accuracy, low-power, and robust operation in harsh environments such as automotive under-hood and industrial control systems.

FAQ

What is the operating temperature range for the LTC2916ITS8-1#TRPBF?

The LTC2916ITS8-1#TRPBF is specified for operation from –40°C to +85°C (I-grade), as indicated by the "I" in the part number. This range is validated for all electrical parameters including threshold accuracy (±1.5%), quiescent current (30μA typical), and RST timing. The same die is also offered in H-grade (–40°C to 125°C) as LTC2916HTS8-1#TRPBF.

Does the LTC2916ITS8-1#TRPBF require external components for basic operation?

Yes, the LTC2916ITS8-1#TRPBF requires a 0.1μF ceramic bypass capacitor between VCC and GND, and an external pull-up resistor (e.g., 10kΩ) on the RST pin to the target logic rail. For manual reset, a momentary switch from MR to GND suffices due to the internal 100kΩ pull-up. No external resistors are needed for threshold selection-SEL1/SEL2 configure thresholds directly.

How does the MR pin function on the LTC2916ITS8-1#TRPBF?

The MR pin on the LTC2916ITS8-1#TRPBF is an active-low manual reset input with an internal 100kΩ pull-up to VCC. Pulling MR to GND asserts RST low for the full reset timeout period (200ms default or capacitor-adjusted), then releases RST high. This enables simple push-button reset without external components, and works independently of VM voltage status.

Can the LTC2916ITS8-1#TRPBF monitor a 12V supply directly?

Yes, the LTC2916ITS8-1#TRPBF can monitor a 12V supply directly using its internal 6.2V shunt regulator on the VCC pin. A series current-limiting resistor (e.g., 11kΩ for 12V) must be placed between the 12V source and VCC to limit input current to ≤5mA. VM connects to the 12V rail (or a divider for lower thresholds), and SEL1/SEL2 are set to VCC/VCC for 12V nominal monitoring.

What is the minimum VCC voltage required for the LTC2916ITS8-1#TRPBF to assert RST reliably?

The LTC2916ITS8-1#TRPBF guarantees RST assertion (low) for VCC ≥ 0.8V, as specified in the Electrical Characteristics table under VCC(MIN). Below this voltage, the internal circuitry may not operate predictably. This ensures fail-safe reset generation even during severe brown-out conditions before the MCU loses functional integrity.