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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Delay Lines

Analog Devices Inc. LTC6994IS6-2#TRPBF

Name: LTC6994IS6-2#TRPBF
Brand: Analog Devices Inc.
SKU: LTC6994IS6-2#TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC6994IS6-2#TRPBF

Manufacturer:: Analog Devices Inc.

Category:: Delay Lines

Package:: SOT-23-6 Thin, TSOT-23-6

Datasheet:: LTC6994IS6-2#TRPBF.pdf

Description:: IC DELAY BLOCK 8TAP PROG TSOT23

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Product details

Overview

LTC6994IS6-2#TRPBF from Analog Devices is a programmable dual-edge delay block IC in the TimerBlox family, providing precise 1µs to 33.6s input-to-output delay with ±2.3% max error (for delays >512µs), CMOS output sourcing/sinking 20mA, and operation from 2.25V to 5.5V supply. It is used in switch debouncing, noise discrimination, and high-vibration industrial timing applications.

For engineers reviewing the LTC6994IS6-2#TRPBF datasheet, LTC6994IS6-2#TRPBF pinout, LTC6994IS6-2#TRPBF application, or LTC6994IS6-2#TRPBF equivalent, key selection criteria include delay accuracy vs. RSET/NDIV configuration, dual-edge vs. single-edge functionality, temperature drift (±0.006%/°C for NDIV ≥ 512), SOT-23-6 package compatibility, and –40°C to 85°C industrial temperature grade.

Technical Context

The LTC6994IS6-2#TRPBF implements a master oscillator (t_MASTER = 1µs × R_SET/50kΩ) feeding an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹) to achieve its full delay range. Its internal 4-bit A/D converter on the DIV pin sets both NDIV and polarity (POL = 1 enables output inversion).

Unlike the LTC6994-1, the LTC6994-2 variant delays both rising and falling edges of the IN signal, and supports dynamic delay adjustment via control voltage on the SET pin (I_SET = 1.25µA to 20µA). The device features hysteresis on IN (VIN(RISING) ≈ 0.55·V+ + 185mV), 500µs typical start-up time, and 70µA supply current at 10µs delay.

Key Specifications

Parameter	Value and Actual Design Meaning
Delay Range	1µs to 33.6 seconds - configurable via R_SET resistor and DIV pin voltage; supports pulse qualification and long-interval timing without external counters.
Delay Accuracy	±2.3% max for t_DELAY > 512µs - ensures reliable timing margin in debounce and noise-discrimination circuits.
Supply Voltage	2.25V to 5.5V - compatible with Li-ion, 3.3V, and 5V logic systems; includes power-on reset and 1.95V POR threshold.
Output Drive	±20mA CMOS - directly drives LEDs, logic inputs, or small relays without external buffers.
Operating Temp	–40°C to +85°C - qualified for industrial environments; junction limit 150°C; θ_JA = 192°C/W in TSOT-23.
Quiescent Current	65µA to 175µA (depending on R_SET/NDIV) - enables battery-powered operation with multi-second delay capability.
Start-Up Time	500 × t_MASTER (typ. 500µs at R_SET = 50kΩ) - fast initialization critical for responsive system boot or wake-up sequences.

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (ThinSOT™), 1mm height, RoHS-compliant, lead-free finish (LTFCX marking). Exposed pad not present in S6 package.

Pin/Terminal	Circuit Role	Design Meaning
IN (Pin 1)	Logic Input	Accepts 0V to V+ signals with hysteresis; rising/falling edges both delayed (LTC6994-2 function); minimum pulse width 5ns @ 3.3V.
GND (Pin 2)	Ground Reference	Low-inductance return path for all internal circuitry; must connect to solid ground plane for jitter and noise immunity.
SET (Pin 3)	Delay Programming	Sinks I_SET = V_SET/R_SET; V_SET regulated to 1.00V ±30mV; limits capacitance to <10pF for stability.
DIV (Pin 4)	Divider & Polarity Control	Voltage-programmed 4-bit A/D input; sets NDIV and POL bit; requires <100pF capacitance and ≤500kΩ source impedance.
V+ (Pin 5)	Power Supply	2.25V–5.5V input; bypass with 0.1µF ceramic capacitor directly to GND; ripple sensitivity mandates clean supply.
OUT (Pin 6)	CMOS Output	Full-rail swing (GND to V+); 30Ω typical output resistance; sources/sinks 20mA; supports output inversion when POL = 1.

Key Features

Feature	Design Value
Dual-edge delay	Delays both rising and falling transitions of IN signal - enables robust pulse shaping and minimum-width pulse generation.
Dynamic delay tuning	I_SET current (1.25–20µA) allows real-time delay adjustment via DAC or potentiometer - no hardware reconfiguration needed.
Noise discrimination	Hysteresis on IN plus programmable delay rejects sub-microsecond glitches - eliminates false triggers in EMI-prone environments.
Low-power precision	65µA quiescent current at longest delay settings - extends battery life in portable equipment without sacrificing timing resolution.
Industrial temperature grade	–40°C to +85°C guaranteed operation - validated across thermal cycling for reliability in factory automation and transportation systems.

Applications

Switch Debouncing	Noise Discriminator
Use Scenario: Mechanical pushbutton or relay contact closure in industrial HMI or motor control panels. IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF acts as a hardware-based digital filter, delaying both edges to suppress bounce-induced multiple transitions. Use Value: Eliminates need for firmware debouncing or RC networks; guarantees 1µs–33.6s adjustable rejection window with ±2.3% accuracy.	Use Scenario: Digital signal conditioning in automotive sensor interfaces exposed to EMI or vibration-induced transients. IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF qualifies pulses by requiring minimum high/low duration before propagating - rejecting sub-threshold noise spikes. Use Value: Provides deterministic, supply- and temperature-stable pulse qualification without microcontroller overhead or analog comparator drift.
Delay Matching	Portable Equipment Timing
Use Scenario: Synchronizing parallel signal paths in test instrumentation or data acquisition systems. IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF introduces calibrated, matched delay in one channel to align with propagation delay of another path. Use Value: Achieves sub-microsecond alignment tolerance across temperature using identical R_SET/DIV configurations - no calibration required.	Use Scenario: Low-power wake-up sequencing in handheld medical devices or IoT sensors. IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF holds MCU in reset or disables peripherals until a precise timeout expires after button press or motion detection. Use Value: Enables 65µA sleep-mode current with 33.6s maximum delay - extends coin-cell battery life by months versus software timers.

Switch Debouncing

Noise Discriminator

Use Scenario: Mechanical pushbutton or relay contact closure in industrial HMI or motor control panels.

IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF acts as a hardware-based digital filter, delaying both edges to suppress bounce-induced multiple transitions.

Use Value: Eliminates need for firmware debouncing or RC networks; guarantees 1µs–33.6s adjustable rejection window with ±2.3% accuracy.

Use Scenario: Digital signal conditioning in automotive sensor interfaces exposed to EMI or vibration-induced transients.

IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF qualifies pulses by requiring minimum high/low duration before propagating - rejecting sub-threshold noise spikes.

Use Value: Provides deterministic, supply- and temperature-stable pulse qualification without microcontroller overhead or analog comparator drift.

Delay Matching

Portable Equipment Timing

Use Scenario: Synchronizing parallel signal paths in test instrumentation or data acquisition systems.

IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF introduces calibrated, matched delay in one channel to align with propagation delay of another path.

Use Value: Achieves sub-microsecond alignment tolerance across temperature using identical R_SET/DIV configurations - no calibration required.

Use Scenario: Low-power wake-up sequencing in handheld medical devices or IoT sensors.

IC Role / Device Role / Timing Role: LTC6994IS6-2#TRPBF holds MCU in reset or disables peripherals until a precise timeout expires after button press or motion detection.

Use Value: Enables 65µA sleep-mode current with 33.6s maximum delay - extends coin-cell battery life by months versus software timers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LTC6994IS6-1#TRPBF	Single-edge delay only (rising OR falling, selected by POL bit); no output inversion capability.	Suitable for edge-triggered reset or simple pulse stretching where only one transition matters.	Select when dual-edge behavior is unnecessary and board space or BOM count must be minimized.
MAX6816EUT+T	Fixed 20ms debounce time; no programmability; open-drain output; 2.7V–5.5V supply.	Targeted exclusively at mechanical switch debouncing; lacks delay range, polarity control, or noise discrimination flexibility.	Choose for cost-sensitive, high-volume switch interfaces where 20ms fixed delay suffices and design simplicity is prioritized.

Compared with LTC6994IS6-1#TRPBF and MAX6816EUT+T, the LTC6994IS6-2#TRPBF uniquely delivers field-configurable dual-edge delay with sub-percent accuracy over seven decades of timing range - enabling one device to replace multiple discrete solutions in timing-critical industrial designs.

Availability

LTC6994IS6-2#TRPBF is available at Aetrix Electronics and suitable for industrial automation, automotive subsystems, and portable medical equipment requiring stable component supply, extended temperature operation, and long-lifecycle availability.

Supply support for LTC6994IS6-2#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC6994IS6-2#TRPBF belongs to the TimerBlox family - silicon timing devices designed to replace discrete RC networks and microcontroller-based delays with deterministic, low-power, pin-programmable timing functions.

FAQ

What is the maximum delay achievable with the LTC6994IS6-2#TRPBF?

The LTC6994IS6-2#TRPBF supports a maximum delay of 33.6 seconds, achieved when NDIV = 2²¹ (2,097,152) and R_SET = 800kΩ per the equation t_DELAY = NDIV × R_SET / 50kΩ × 1µs. This value is specified in the Electrical Characteristics table and confirmed across the –40°C to +85°C operating range.

Does the LTC6994IS6-2#TRPBF support output inversion?

Yes, the LTC6994IS6-2#TRPBF supports output inversion when the MSB (POL bit) of the DIVCODE is set to 1. This is a defining feature of the LTC6994-2 variant, unlike the LTC6994-1. Inversion occurs only when configured via the DIV pin voltage - no additional control lines are required.

What is the supply current of the LTC6994IS6-2#TRPBF at 2.25V and 5.5V?

At V+ = 2.25V and R_SET = 800kΩ with NDIV ≥ 512, the LTC6994IS6-2#TRPBF draws 55µA (min) to 90µA (max). At V+ = 5.5V under identical conditions, it draws 65µA (min) to 100µA (max). These values are specified in the Electrical Characteristics table under IS(IDLE) and apply over the full –40°C to +85°C temperature range.

Can the LTC6994IS6-2#TRPBF be used in automotive applications?

The LTC6994IS6-2#TRPBF is rated for –40°C to +85°C operation and is AEC-Q100 qualified for automotive applications. However, only versions with the #W suffix (e.g., LTC6994IS6-2#WTRPBF) are manufactured under controlled automotive processes and shipped with Automotive Reliability reports. Standard #TRPBF variants are suitable for non-safety-critical automotive subsystems but require validation per OEM requirements.

How is the delay accuracy affected by temperature and supply voltage?

Delay drift over temperature is ±0.006%/°C for NDIV ≥ 512 and ±0.008%/°C for NDIV ≤ 64. Supply voltage variation causes up to ±0.9% delay change (worst case, V+ = 2.25V to 2.7V, NDIV = 8). These parameters are measured and guaranteed across the full operating range and documented in the Electrical Characteristics table.

LTC6994IS6-2#TRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: TimerBlox®

Package/Case:: SOT-23-6 Thin, TSOT-23-6

Packaging:: Tape & Reel (TR)

Product Status:: Active

Number of Taps/Steps:: 8

Function:: Programmable

Delay to 1st Tap:: -

Tap Increment:: -

Available Total Delays:: 1µs ~ 33.6s

Number of Independent Delays:: 1

Voltage - Supply:: 2.25V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TSOT-23-6

LTC6994IS6-2#TRPBF FAQ

1.How can I place an order for LTC6994IS6-2#TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC6994IS6-2#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LTC6994IS6-2#TRPBF reliable?

The price and inventory of LTC6994IS6-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6994IS6-2#TRPBF is usually 5 days.

3.What payment methods are accepted for LTC6994IS6-2#TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6994IS6-2#TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC6994IS6-2#TRPBF?

LTC6994IS6-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC6994IS6-2#TRPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LTC6994IS6-2#TRPBF?

For technical support, including LTC6994IS6-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6994IS6-2#TRPBF requirements.

6.How does Aetrix verify that LTC6994IS6-2#TRPBF is sourced from the original manufacturer or authorized distributors?

All LTC6994IS6-2#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC6994IS6-2#TRPBF meets industry standards.

7.What is the process for return or replacement of LTC6994IS6-2#TRPBF?

All LTC6994IS6-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6994IS6-2#TRPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LTC6994IS6-2#TRPBF part is unused and in its original packaging.

Return procedure for LTC6994IS6-2#TRPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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