Analog Devices Inc. LTC6995HDCB-1#TRPBF

Overview

LTC6995HDCB-1#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 –40°C to 125°C, and operates from 2.25V–5.5V supply with 55–80µA current draw. It serves as a precision power-on reset timer or watchdog in automotive engine control units.

For engineers reviewing the LTC6995HDCB-1#TRPBF datasheet, LTC6995HDCB-1#TRPBF pinout, LTC6995HDCB-1#TRPBF application, or LTC6995HDCB-1#TRPBF equivalent, this page provides verified package mapping (6-lead DFN, 2mm × 3mm), confirmed RST-active-high behavior, validated DIVCODE-to-NDIV translation, real-world start-up timing (500× master clock cycle), and AEC-Q100-qualified thermal performance data.

Technical Context

The LTC6995HDCB-1#TRPBF implements a master oscillator (1MHz max) controlled by SET-pin current (ISET = VSET/RSET), followed by fixed ÷1024 division and an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹). Its internal 4-bit A/D converter reads DIV pin voltage (VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%) to set both NDIV and output polarity (POL bit).

Reset is active high (LTC6995-1 variant), halting oscillation and clearing dividers; release initiates full half-cycle delay before first edge. Output is CMOS, 50% duty cycle, 20mA drive capability, with 500µs typical start-up time and <1% settling within one output cycle after DIVCODE change.

Key Specifications

Pinout & Package

Package: 6-lead (2mm × 3mm) plastic DFN (DCB), exposed pad connected to GND. Thermal resistance θJA = 64°C/W, θJC = 9.6°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6995HDCB-2#TRPBF, the LTC6995HDCB-1#TRPBF offers native compatibility with active-high reset architectures, avoiding level-shifting components; versus SiT1533AI-JF-33E-32.768000, it provides field-configurable periods from ms to hours - essential for adaptive timing in automotive diagnostics and power management.

Availability

LTC6995HDCB-1#TRPBF is available at Aetrix Electronics and suitable for automotive powertrain control, industrial sensor wake-up sequencing, and medical device power-on reset applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6995HDCB-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC6995HDCB-1#TRPBF belongs to the TimerBlox® family - silicon timing devices engineered for precision, programmability, and robustness in applications where traditional RC or crystal-based solutions lack accuracy, stability, or integration density.

FAQ

What is the maximum operating temperature rating for the LTC6995HDCB-1#TRPBF?

The LTC6995HDCB-1#TRPBF is rated for continuous operation from –40°C to 125°C and is AEC-Q100 qualified for automotive Grade H applications. This specification is guaranteed over the full temperature range, with junction temperature limited to 150°C. The device maintains ±1.5% frequency accuracy across this range, making it suitable for under-hood engine control and transmission modules where ambient temperatures exceed 105°C.

How does the RST pin function on the LTC6995HDCB-1#TRPBF?

The RST pin on the LTC6995HDCB-1#TRPBF is active high: applying V+ to RST halts the master oscillator and clears internal dividers, forcing OUT to a state determined by the programmed POL bit. When RST is released (driven low), the oscillator resumes with a precisely timed half-period delay before the first output edge. This behavior is intrinsic to the LTC6995-1 variant and differs from the active-low RST of the LTC6995-2 series.

Can the LTC6995HDCB-1#TRPBF generate a 1Hz output signal?

Yes, the LTC6995HDCB-1#TRPBF can generate a precise 1Hz output. Using NDIV = 64 and RSET = 154kΩ yields tOUT = 64 × (154kΩ / 50kΩ) × 1.024ms = 1.012s (≈1Hz). This configuration draws ~65µA at 2.25V and maintains ±1.5% accuracy over –40°C to 125°C - ideal for low-power telemetry beacon intervals or HVAC cycle timing.

What package type is used for the LTC6995HDCB-1#TRPBF?

The LTC6995HDCB-1#TRPBF uses a 6-lead plastic DFN package (DCB), measuring 2mm × 3mm with 0.5mm pitch and a 1mm profile. The exposed pad (Pin 7) is internally connected to GND and must be soldered to the PCB ground plane for optimal thermal dissipation (θJA = 64°C/W) and noise immunity. This compact, low-profile package supports high-density automotive PCB layouts.

Is the LTC6995HDCB-1#TRPBF pin-compatible with other TimerBlox devices?

No, the LTC6995HDCB-1#TRPBF is not pin-compatible with other TimerBlox devices such as LTC6992 or LTC6993. Its 6-pin DFN pinout (V+, GND, RST, SET, DIV, OUT) is unique to the LTC6995 family and maps specifically to its dual-programming architecture (RSET + DIV voltage divider). Substituting other TimerBlox parts requires PCB redesign due to differing pin functions, counts, and package footprints.