Analog Devices Inc. LTC6995MPS6-2#TRPBF

Overview

LTC6995MPS6-2#TRPBF from Analog Devices is a silicon-based programmable low-frequency oscillator IC designed for long-duration timing events in harsh environments. It delivers 1.024ms–9.54h output period (29.1µHz–977Hz), ±1.5% max frequency accuracy over –55°C to 125°C, and features active-low reset with selectable output polarity. It serves as a precision power-on reset timer or watchdog timer in automotive and industrial control systems.

For engineers reviewing the LTC6995MPS6-2#TRPBF datasheet, LTC6995MPS6-2#TRPBF pinout, LTC6995MPS6-2#TRPBF application, or LTC6995MPS6-2#TRPBF equivalent, key selection criteria include its –55°C to 125°C MP-grade temperature range, TSOT-23-6 package, 55µA–80µA supply current across clock periods, CMOS 20mA drive capability, and resistor-programmable NDIV divider with POL bit control.

Technical Context

The LTC6995MPS6-2#TRPBF implements a master oscillator (1MHz max) controlled by SET-pin current (ISET = VSET/RSET), followed by a fixed ÷1024 divider and an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹). Its internal 4-bit A/D converter on the DIV pin sets both NDIV and output polarity via the POL bit.

Reset behavior is version-specific: LTC6995-2 uses active-low RST that forces OUT to a fixed state (determined by POL) and clears internal dividers; release initiates a full half-period delay before oscillation resumes. Start-up time is 500× master clock period (≤5ms typical), with POR activation at ~1.4V.

Key Specifications

Pinout & Package

Package: 6-lead TSOT-23 (ThinSOT™), 1mm profile, lead-free, RoHS-compliant. Exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable oscillator applications.

Compared with LTC6995IS6-2#TRPBF, the LTC6995MPS6-2#TRPBF provides guaranteed operation down to –55°C and higher reliability for mission-critical automotive functions; compared with SiT1533AI-HR-33E-32.768000, it offers full resistor-based period tuning, active reset, and polarity selection-enabling flexible timing architectures impossible with fixed-frequency crystals.

Availability

LTC6995MPS6-2#TRPBF is available at Aetrix Electronics and suitable for automotive powertrain control, industrial safety interlocks, and aerospace telemetry systems requiring stable component supply across extreme temperature ranges and long production lifecycles.

Supply support for LTC6995MPS6-2#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC6995MPS6-2#TRPBF belongs to the TimerBlox® family of silicon timing devices, engineered specifically for replacing unreliable RC networks and quartz-based solutions in long-duration, low-power, and high-temperature timing applications.

FAQ

What is the operating temperature range of the LTC6995MPS6-2#TRPBF?

The LTC6995MPS6-2#TRPBF is rated for –55°C to 125°C operation and is part of Analog Devices' MP-grade product line, fully qualified to AEC-Q100 standards for automotive under-hood applications. This extended range exceeds standard industrial (–40°C to 85°C) and commercial (0°C to 70°C) grades, ensuring reliable timing performance in engine control units, battery management systems, and high-vibration industrial controllers. The LTC6995MPS6-2#TRPBF maintains ±1.5% frequency accuracy across this full span.

How does the LTC6995MPS6-2#TRPBF differ from the LTC6995-1 version?

The LTC6995MPS6-2#TRPBF is the LTC6995-2 variant, featuring an active-low reset input (RST), whereas LTC6995-1 uses active-high. Both share identical oscillator architecture, NDIV programming, and POL bit functionality. The LTC6995MPS6-2#TRPBF's RST pin asserts low to halt oscillation and clear dividers; releasing RST initiates a full output cycle with precise half-period delay. This makes LTC6995MPS6-2#TRPBF ideal for interfacing with open-drain reset supervisors or microcontrollers with active-low reset outputs.

Can the LTC6995MPS6-2#TRPBF generate a 1Hz output signal?

Yes, the LTC6995MPS6-2#TRPBF can generate a precise 1Hz output. Using NDIV = 64 and RSET = 3.125MΩ (standard 3.16MΩ 1% resistor), the equation tOUT = NDIV × RSET / 50kΩ × 1.024ms yields 1.000s. For lowest power, NDIV = 64 is preferred over higher values; the LTC6995MPS6-2#TRPBF draws ~65µA at this configuration. Output polarity is configurable via the DIV pin voltage to ensure correct reset-state behavior in the target system.

What is the minimum start-up time for the LTC6995MPS6-2#TRPBF?

The LTC6995MPS6-2#TRPBF has a typical start-up time of 500 × tMASTER, where tMASTER is the master oscillator period. With RSET = 50kΩ (max fMASTER ≈ 1MHz), tSTART ≈ 0.5ms; with RSET = 800kΩ (min fMASTER ≈ 62.5kHz), tSTART ≈ 8ms. This start-up occurs after V+ rises above ~1.4V (POR threshold), and the OUT pin remains low until completion. The LTC6995MPS6-2#TRPBF guarantees this behavior across –55°C to 125°C with no external components required.

Is the LTC6995MPS6-2#TRPBF pin-compatible with other TimerBlox devices?

No, the LTC6995MPS6-2#TRPBF is not pin-compatible with other TimerBlox devices such as LTC6990, LTC6991, or LTC6993. It uses a dedicated 6-pin TSOT-23 layout (V+, GND, SET, RST, DIV, OUT) optimized for resistor-programmed low-frequency oscillation. Other TimerBlox parts feature different pin counts (e.g., 8-pin DFN for LTC6993), distinct pin functions (e.g., MOD pin for pulse-width modulation), and incompatible internal architectures. Direct substitution requires PCB redesign and firmware reconfiguration.