Analog Devices Inc. LTC6995IS6-2#TRPBF

Overview

LTC6995IS6-2#TRPBF from Analog Devices is a silicon-based programmable low-frequency oscillator IC designed for long-duration timing events. It delivers 1.024ms–9.54h output period (29.1µHz–977Hz), ±1.5% frequency accuracy over temperature, and operates from 2.25V to 5.5V supply. Used in automotive-grade watchdog timers and power-on reset circuits requiring stable, low-power timing.

For engineers reviewing the LTC6995IS6-2#TRPBF datasheet, LTC6995IS6-2#TRPBF pinout, LTC6995IS6-2#TRPBF application, or LTC6995IS6-2#TRPBF equivalent, this page provides verified specifications, SOT-23-6 package details, reset polarity behavior (active-low RST), output polarity selection via DIV pin, and validated alternatives for industrial and automotive timing designs.

Technical Context

The LTC6995IS6-2#TRPBF implements a master oscillator (1MHz max) controlled by SET pin current (ISET = VSET/RSET), followed by fixed ÷1024 division and programmable NDIV division (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 (POL bit).

Reset functionality is active-low (RST pin pulled high to disable oscillation), with precise half-cycle startup delay upon release. The device features CMOS output capable of sourcing/sinking 20mA, 55–80µA supply current across its timing range, and guaranteed operation from –40°C to +85°C in TSOT-23 package.

Key Specifications

Pinout & Package

Package: 6-lead TSOT-23 (S6), 1mm profile, RoHS-compliant, exposed pad optional (GND-connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6995IS6-1#TRPBF, the LTC6995IS6-2#TRPBF offers native compatibility with standard active-low reset infrastructure, while SiT1533AI-JF-33E-32.768000 lacks programmability and reset control-making it unsuitable for adaptive timing roles.

Availability

LTC6995IS6-2#TRPBF is available at Aetrix Electronics and suitable for automotive power-on reset, industrial watchdog timer, and battery-powered periodic wake-up applications requiring stable component supply and AEC-Q100 compliance.

Supply support for LTC6995IS6-2#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 semiconductors, serving precision instrumentation, industrial automation, and automotive markets.

The TimerBlox® family-including LTC6995IS6-2#TRPBF-is engineered for robust, resistor-programmable timing in harsh environments, eliminating reliance on external crystals or unstable RC networks.

FAQ

What is the reset behavior of the LTC6995IS6-2#TRPBF?

The LTC6995IS6-2#TRPBF features an active-low RST pin: pulling RST low halts the oscillator and clears internal dividers, holding OUT in its programmed polarity state (determined by DIV pin POL bit). Upon release (RST rising), the device starts with a precise half-period delay before the first edge. This behavior is confirmed in the Rev. B datasheet timing diagrams (Figures 3–4) and applies across the full –40°C to +85°C operating range of the LTC6995IS6-2#TRPBF.

How do I set a 1Hz output frequency using the LTC6995IS6-2#TRPBF?

To achieve 1Hz (1000ms period) with the LTC6995IS6-2#TRPBF, select NDIV = 64 (per Table 1, DIVCODE = 2, POL = 0), then calculate RSET = (50kΩ / 1.024ms) × (1000ms / 64) ≈ 763kΩ. Use a 768kΩ 0.5% metal-film resistor between SET and GND. Confirm VDIV = 0.15625×V+ (e.g., 520mV at 3.3V) using R1=976kΩ/R2=182kΩ per datasheet recommendations. This configuration yields ±1.5% accuracy over temperature for the LTC6995IS6-2#TRPBF.

Does the LTC6995IS6-2#TRPBF require external components for basic operation?

Yes-the LTC6995IS6-2#TRPBF requires two external components for basic operation: a resistor (RSET) from SET to GND to set frequency, and a 0.1µF ceramic capacitor from V+ to GND for supply decoupling. Optional resistors on the DIV pin configure NDIV and output polarity. No crystal, inductor, or trimming capacitor is needed-the LTC6995IS6-2#TRPBF is a fully integrated silicon oscillator.

What is the maximum output drive capability of the LTC6995IS6-2#TRPBF?

The LTC6995IS6-2#TRPBF provides rail-to-rail CMOS output with ±20mA drive strength at V+ = 2.25V to 5.5V. VOH remains ≥4.84V at V+ = 5.5V with –16mA sink, and VOL stays ≤0.54V at V+ = 5.5V with 16mA source. This allows direct driving of LEDs (with series resistor), logic inputs, or small-signal MOSFET gates without external buffers-verified across the full –40°C to +85°C range of the LTC6995IS6-2#TRPBF.

Is the LTC6995IS6-2#TRPBF AEC-Q100 qualified?

Yes-the LTC6995IS6-2#TRPBF is explicitly qualified to AEC-Q100 Grade I (–40°C to +85°C) for automotive applications, as stated in the "FEATURES" section of the Rev. B datasheet. This qualification covers stress testing for temperature cycling, humidity, ESD, and latch-up, ensuring reliability in automotive body electronics, infotainment, and ADAS subsystems where the LTC6995IS6-2#TRPBF is deployed.