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Analog Devices Inc. LTC6994HS6-2#WTRPBF
- Part No.:
- LTC6994HS6-2#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Delay Lines
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC6994HS6-2#WTRPBF.pdf
- Description:
- TIMERBLOX: DELAY BLOCK/ DEBOUNCE
- Quantity:
- Payment:
- Shipping:
Inventory:3,107
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Product details
Overview
LTC6994HS6-2#WTRPBF from Analog Devices is a TimerBlox® programmable delay block IC designed for edge-controlled timing in noise-prone environments. It delays both rising and falling edges of digital inputs with user-selectable inversion, supports 1µs–33.6s delay range via RSET resistor and DIV pin voltage, achieves ±2.3% max delay error (for delays >512µs), operates from 2.25V–5.5V, and features CMOS output capable of ±20mA drive. It is used in switch debouncing for industrial control panels exposed to vibration.
For engineers reviewing the LTC6994HS6-2#WTRPBF datasheet, LTC6994HS6-2#WTRPBF pinout, LTC6994HS6-2#WTRPBF application, or LTC6994HS6-2#WTRPBF equivalent, key selection criteria include dual-edge delay capability, automotive-grade temperature range (–40°C to 125°C), AEC-Q100 qualification, SOT-23-6 package footprint, and dynamic delay adjustment via control voltage on the SET pin.
Technical Context
The LTC6994HS6-2#WTRPBF implements a master oscillator with tMASTER = 1µs × RSET/50kΩ, followed by an 8-step programmable divider (NDIV = 1, 8, 64, ..., 221) to set total delay tDELAY = NDIV × tMASTER. Its internal 4-bit A/D converter reads VDIV to determine both NDIV and POL bit state - for LTC6994-2, POL = 1 enables output inversion while maintaining dual-edge delay functionality.
Delay accuracy is governed by RSET tolerance and inherent device error (±2.3% for tDELAY > 512µs), with drift over temperature limited to ±0.006%/°C (NDIV ≥ 512). The SET pin regulates VSET to 1.00V ±30mV, making delay insensitive to VSET drift when using a single RSET, and enabling dynamic delay tuning via external current injection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay Range | 1µs to 33.6 seconds - covers microsecond-level signal synchronization up to multi-second system timeouts. |
| Delay Accuracy | ±2.3% max for delays >512µs - ensures reliable pulse qualification in safety-critical debounce applications. |
| Supply Voltage | 2.25V to 5.5V - compatible with Li-ion battery systems (3.0–4.2V) and standard 3.3V/5V logic rails. |
| Operating Temp | –40°C to 125°C - meets extended automotive under-hood and industrial embedded requirements. |
| Output Drive | ±20mA CMOS - directly drives LEDs, small relays, or logic inputs without external buffers. |
| Start-Up Time | 500 × tMASTER (typical 500µs at RSET = 50kΩ) - enables fast system initialization after power-on reset. |
| Quiescent Current | 65µA at V+ = 2.25V, RSET = 800kΩ, NDIV ≥ 512 - supports ultra-low-power always-on monitoring circuits. |
Pinout & Package
Package: 6-Lead Plastic TSOT-23 (S6), 1mm profile, 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 0.3×V+/0.7×V+ threshold CMOS-compatible signals; hysteresis prevents false triggering on noisy edges. |
| GND (Pin 2) | Ground Reference | Low-inductance return path for all internal circuitry; must connect directly to PCB ground plane. |
| SET (Pin 3) | Delay Programming | Sinks ISET = VSET/RSET; VSET regulated to 1.00V ±30mV; sets master oscillator frequency. |
| DIV (Pin 4) | Divider & Polarity Control | Voltage-programmed 4-bit input; determines NDIV (1–221) and POL bit (output inversion for LTC6994-2). |
| V+ (Pin 5) | Power Supply | 2.25V–5.5V input; requires local 0.1µF ceramic bypass capacitor to GND for stable operation. |
| OUT (Pin 6) | CMOS Output | Full-rail swing (GND to V+); 30Ω typical output impedance; sources/sinks 20mA at V+ ≥ 2.7V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-edge delay with polarity control | LTC6994HS6-2#WTRPBF delays both rising and falling transitions and supports output inversion via DIV pin, enabling precise pulse shaping in motor control timing. |
| Dynamic delay adjustment | Delay time can be modified in real time by varying ISET current into SET pin, allowing adaptive response to changing system conditions without hardware reconfiguration. |
| AEC-Q100 qualified | Qualified for automotive applications per AEC-Q100 Rev H Grade 1 (–40°C to 125°C), including stress testing for reliability in harsh environments. |
| Noise discrimination | Internal digital filter rejects sub-microsecond glitches; only sustained input transitions exceeding minimum pulse width (5ns at 3.3V) trigger delay timing. |
| Low-power idle mode | Draws as low as 55µA at 2.25V when idle (no active delay), reducing system standby power in battery-powered IoT sensors. |
Applications
| Industrial Switch Debouncing | Automotive Door Lock Timing |
|---|---|
|
Use Scenario: Mechanical push-button switches in factory HMIs generate contact bounce lasting 1–10ms, causing spurious MCU interrupts. IC Role / Device Role / Timing Role: LTC6994HS6-2#WTRPBF acts as a hardware-based pulse qualifier, delaying both edges to suppress bounce and guarantee clean, single-event outputs. Use Value: Eliminates need for software debouncing routines or RC filters, improving real-time response and reducing MCU firmware complexity. |
Use Scenario: Vehicle door lock actuators require synchronized 500ms–2s activation windows after command reception to prevent unintended actuation. IC Role / Device Role / Timing Role: LTC6994HS6-2#WTRPBF provides precise, temperature-stable delay between CAN message decode and solenoid driver enable. Use Value: Meets ISO 16750-4 vibration immunity requirements with ±0.006%/°C delay drift, ensuring consistent timing across under-hood temperature swings. |
| Portable Medical Device Power Sequencing | High-Vibration Sensor Signal Conditioning |
|
Use Scenario: Battery-powered glucose meters sequence sensor biasing, ADC sampling, and display backlight activation with strict inter-stage delays. IC Role / Device Role / Timing Role: LTC6994HS6-2#WTRPBF generates accurate, low-current timing intervals between subsystem power-ups to minimize inrush current. Use Value: 65µA quiescent current at 2.25V extends battery life beyond 12 months in intermittent-use devices. |
Use Scenario: Accelerometer-based structural health monitors in wind turbines experience high-G mechanical shock that corrupts digital control signals. IC Role / Device Role / Timing Role: LTC6994HS6-2#WTRPBF filters transient spikes using its 5ns minimum input pulse width and dual-edge delay to validate true commands. Use Value: Prevents false tripping during 50g vibration events, verified per MIL-STD-810G Method 514.6 Cat. 24. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable delay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816EUT+T | Fixed 10ms debounce time; no programmable delay range or dual-edge support; 5V-only supply. | Only suitable for standardized mechanical switch interfaces where fixed delay suffices. | Select MAX6816EUT+T only if cost sensitivity outweighs flexibility needs and system operates strictly at 5V. |
| LTC6994IS6-2#TRPBF | Same architecture and pinout but rated for –40°C to 85°C industrial temp range; non-automotive grade; no AEC-Q100 qualification. | Applicable in commercial/industrial settings without automotive reliability or extended temperature demands. | Choose LTC6994IS6-2#TRPBF for cost-sensitive non-automotive designs requiring identical functionality without AEC-Q100 validation. |
Compared with MAX6816EUT+T and LTC6994IS6-2#TRPBF, the LTC6994HS6-2#WTRPBF uniquely combines AEC-Q100 qualification, –40°C to 125°C operation, and fully programmable dual-edge delay - enabling one-part solutions for automotive timing-critical subsystems where reliability and configurability are mandatory.
Availability
LTC6994HS6-2#WTRPBF is available at Aetrix Electronics and suitable for automotive body electronics, industrial human-machine interfaces, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6994HS6-2#WTRPBF 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 TimerBlox® family-including LTC6994HS6-2#WTRPBF-is designed for precision timing functions in space-constrained, noise-sensitive applications where traditional RC or microcontroller-based delays lack stability or simplicity.
FAQ
What is the maximum delay time achievable with the LTC6994HS6-2#WTRPBF?
The LTC6994HS6-2#WTRPBF supports a maximum delay time of 33.6 seconds. This is achieved when NDIV = 221 (2,097,152) and RSET = 800kΩ, yielding tDELAY = 2,097,152 × (800kΩ / 50kΩ) × 1µs = 33.55 seconds. The datasheet specifies 33.6 seconds as the guaranteed upper limit across temperature and supply variations.
How does the LTC6994HS6-2#WTRPBF differ from the LTC6994HS6-1#WTRPBF?
The LTC6994HS6-2#WTRPBF delays both rising and falling edges of the input signal and supports output inversion via the POL bit, whereas the LTC6994HS6-1#WTRPBF delays only one edge (rising or falling, selected by POL). This makes LTC6994HS6-2#WTRPBF suitable for generating defined-width pulses and symmetric timing control in bidirectional signal paths.
Can the LTC6994HS6-2#WTRPBF operate from a 2.5V supply?
Yes, the LTC6994HS6-2#WTRPBF operates over a supply range of 2.25V to 5.5V, fully supporting 2.5V systems. At 2.25V, it maintains ±20mA output drive capability (with reduced VOL/VOH margins), 5ns minimum input pulse width, and full functionality across its –40°C to 125°C temperature range.
What is the purpose of the DIV pin on the LTC6994HS6-2#WTRPBF?
The DIV pin on the LTC6994HS6-2#WTRPBF serves two functions: it selects the programmable divider ratio (NDIV = 1 to 221) via a 4-bit A/D conversion of VDIV, and its MSB (POL bit) configures output inversion. For LTC6994HS6-2#WTRPBF, POL = 1 inverts the output while preserving dual-edge delay behavior - enabling flexible signal polarity control without additional logic gates.
Is the LTC6994HS6-2#WTRPBF pin-compatible with other TimerBlox delay blocks?
Yes, the LTC6994HS6-2#WTRPBF shares identical SOT-23-6 pinout and electrical interface with all other LTC6994-xS6 variants (e.g., LTC6994IS6-2#TRPBF, LTC6994CS6-2#TRPBF), enabling drop-in replacement across temperature grades. However, automotive-grade #WTRPBF suffix parts include AEC-Q100 qualification and enhanced process controls not present in commercial/industrial versions.
LTC6994HS6-2#WTRPBF 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 ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC6994HS6-2#WTRPBF FAQ
1.How can I place an order for LTC6994HS6-2#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6994HS6-2#WTRPBF 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 LTC6994HS6-2#WTRPBF reliable?
The price and inventory of LTC6994HS6-2#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6994HS6-2#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC6994HS6-2#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6994HS6-2#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6994HS6-2#WTRPBF?
LTC6994HS6-2#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6994HS6-2#WTRPBF 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 LTC6994HS6-2#WTRPBF?
For technical support, including LTC6994HS6-2#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6994HS6-2#WTRPBF requirements.
6.How does Aetrix verify that LTC6994HS6-2#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6994HS6-2#WTRPBF 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 LTC6994HS6-2#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC6994HS6-2#WTRPBF?
All LTC6994HS6-2#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6994HS6-2#WTRPBF, 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 LTC6994HS6-2#WTRPBF part is unused and in its original packaging.
Return procedure for LTC6994HS6-2#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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