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Analog Devices Inc. LTC6994MPS6-1#TRPBF
- Part No.:
- LTC6994MPS6-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Delay Lines
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC6994MPS6-1#TRPBF.pdf
- Description:
- IC DELAY BLOCK 8TAP PROG TSOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,351
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Product details
Overview
LTC6994MPS6-1#TRPBF from Analog Devices is a precision programmable delay block (TimerBlox family) that delays rising-edge transitions only, with 1µs to 33.6s range, ±2.3% max error for delays >512µs, and operates from –55°C to 125°C in TSOT-23 package - used in automotive switch debouncing and high-vibration pulse qualification.
For engineers reviewing the LTC6994MPS6-1#TRPBF datasheet, LTC6994MPS6-1#TRPBF pinout, LTC6994MPS6-1#TRPBF application, or LTC6994MPS6-1#TRPBF equivalent, this page delivers verified timing accuracy specs, TSOT-23 pin mapping, edge-selective delay behavior, AEC-Q100 qualification status, and direct alternatives for noise-discriminating delay circuits.
Technical Context
The LTC6994MPS6-1#TRPBF implements a master oscillator (tMASTER = 1µs × RSET/50kΩ) feeding an 8-step programmable divider (NDIV = 1, 8, 64, ..., 221) to set total delay tDELAY = NDIV × RSET/50kΩ × 1µs. Its internal 4-bit A/D converter reads DIV pin voltage to select NDIV and POL bit.
POL = 0 configures rising-edge-only delay per LTC6994-1 functionality; falling edges pass through with only 10–24ns propagation delay. The SET pin regulates VSET to 1.00V ±30mV, making delay insensitive to VSET drift when using RSET, with ISET ranging 1.25µA–20µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay Range | 1µs to 33.6 seconds - supports both microsecond-level signal conditioning and multi-second system timing without external counters. |
| Delay Accuracy | ±2.3% max for tDELAY > 512µs - enables reliable pulse qualification in safety-critical automotive debounce applications. |
| Supply Voltage | 2.25V to 5.5V - compatible with 3.3V and 5V logic domains and battery-powered systems down to 2.25V cutoff. |
| Operating Temp | –55°C to 125°C - meets extended industrial and automotive under-hood requirements per AEC-Q100 Grade MP. |
| Supply Current | 65–200µA depending on RSET and NDIV - ultra-low quiescent current preserves battery life in portable equipment. |
| Output Drive | CMOS output sourcing/sinking 20mA - directly drives LEDs, logic inputs, or small MOSFET gates without buffer stages. |
| Start-Up Time | 500 × tMASTER (typ. 500µs at RSET = 50kΩ) - ensures deterministic initialization before first input edge is processed. |
Pinout & Package
Package: 6-Lead Plastic TSOT-23 (S6), 1mm profile, –55°C to 125°C operating range, exposed pad optional, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Logic Input | Rising-edge sensitive input; hysteresis thresholds scale with V+ (≈0.55×V+ + 185mV rising, ≈0.48×V+ – 155mV falling). |
| GND (Pin 2) | Ground Reference | Low-inductance return path for all internal circuitry; must connect to solid ground plane for jitter control. |
| SET (Pin 3) | Delay Programming | Sinks precise ISET = VSET/RSET; VSET regulated to 1.00V ±30mV - sets master oscillator period. |
| DIV (Pin 4) | Divider & Polarity Control | Voltage-programmed 4-bit A/D input; selects NDIV (1–221) and POL bit (rising-edge delay only for LTC6994-1). |
| V+ (Pin 5) | Power Supply | 2.25V–5.5V single supply; requires 0.1µF ceramic bypass capacitor directly to GND pin. |
| OUT (Pin 6) | CMOS Output | Full-rail output (GND to V+) with ~30Ω drive impedance; sources/sinks 20mA at V+ ≥ 2.7V. |
Key Features
| Feature | Design Value |
|---|---|
| Rising-edge selective delay | Only delays rising transitions (POL = 0); falling edges propagate with <24ns tPD - ideal for eliminating false triggers from negative noise spikes. |
| Dynamic DIVCODE update | Supports real-time delay reconfiguration via DIV pin voltage change; settling time = 16 × (∆DIVCODE + 6) × tMASTER - enables adaptive timing in closed-loop systems. |
| AEC-Q100 qualified | Qualified to MP grade (–55°C to 125°C) with full automotive reliability testing - approved for engine control, transmission, and ADAS sensor interface timing. |
| Noise discrimination | Rejects input pulses shorter than tWIDTH (5ns min at 3.3V) - functions as hardware-based pulse qualifier without firmware overhead. |
| Ultra-low power idle mode | Draws as low as 55µA at V+ = 2.25V, RSET = 800kΩ, NDIV ≥ 512 - extends battery life in always-on monitoring circuits. |
Applications
| Automotive Switch Debouncing | Noise-Discriminating Pulse Qualifier |
|---|---|
Use Scenario: Mechanical switch inputs in vehicle door modules, seat controls, or HVAC panels subject to contact bounce and EMI. IC Role / Device Role / Timing Role: LTC6994MPS6-1#TRPBF delays rising edges only, rejecting sub-10µs bounce transients while passing valid actuation signals. Use Value: Eliminates need for software debouncing or RC filters, reducing MCU interrupt load and PCB space in AEC-Q100-compliant designs. |
Use Scenario: Validating sensor pulses in high-vibration environments (e.g., engine knock detection, ABS wheel speed signals). IC Role / Device Role / Timing Role: LTC6994MPS6-1#TRPBF acts as hardware pulse qualifier - only passes input edges sustained longer than programmed tDELAY. Use Value: Rejects EMI-induced glitches without CPU intervention, ensuring deterministic timing for safety-critical signal acquisition. |
| High-Acceleration Sensor Interface | Portable Equipment Power Sequencing |
Use Scenario: Signal conditioning for accelerometers or gyroscopes mounted on rotating machinery or impact tools. IC Role / Device Role / Timing Role: LTC6994MPS6-1#TRPBF provides stable delay despite wide temperature swings (–55°C to 125°C) and mechanical shock. Use Value: Maintains timing integrity where thermal gradients and vibration would destabilize RC or crystal-based delays. |
Use Scenario: Controlled power-up sequencing of microcontrollers and peripherals in handheld medical or test equipment. IC Role / Device Role / Timing Role: LTC6994MPS6-1#TRPBF generates precise enable delays from a single resistor, replacing discrete timers and logic. Use Value: Reduces BOM count and layout complexity while guaranteeing µs-level accuracy across battery voltage discharge (2.25V–5.5V). |
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 | Same architecture and pinout; rated –40°C to 85°C (I-grade), not extended temp or AEC-Q100 qualified. | Not suitable for under-hood automotive use; acceptable for commercial/industrial indoor applications. | Select when cost sensitivity outweighs extended temperature or automotive qualification requirements. |
| MAX6816EUT+T | Dedicated 3-channel debouncer IC; fixed 30ms delay, no programmability, lower supply current (1.5µA), but no adjustable timing or edge selectivity. | Only fits simple pushbutton debounce; lacks flexibility for pulse qualification or custom delay ranges. | Choose for lowest-power, lowest-cost fixed-debounce needs where programmability is unnecessary. |
Compared with LTC6994MPS6-1#TRPBF, the LTC6994IS6-1#TRPBF offers identical functionality at lower cost but sacrifices automotive qualification and extended temperature operation, while the MAX6816EUT+T trades programmability and edge selectivity for ultra-low power and simplicity in basic switch interfaces.
Availability
LTC6994MPS6-1#TRPBF is available at Aetrix Electronics and suitable for automotive switch debouncing, high-vibration pulse qualification, and portable equipment power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LTC6994MPS6-1#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 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 LTC6994MPS6-1#TRPBF - was designed to replace discrete RC timers and microcontroller-based delays with highly accurate, low-power, easy-to-configure silicon timing blocks for signal conditioning and system control.
FAQ
What is the maximum delay achievable with LTC6994MPS6-1#TRPBF?
The LTC6994MPS6-1#TRPBF achieves up to 33.6 seconds of delay using NDIV = 221 and RSET = 800kΩ. This is calculated as tDELAY = NDIV × RSET/50kΩ × 1µs. At the minimum RSET of 50kΩ and NDIV = 1, the shortest delay is 1µs. All values within this range are continuously programmable via resistor selection.
Does LTC6994MPS6-1#TRPBF support falling-edge delay?
No - LTC6994MPS6-1#TRPBF is the LTC6994-1 variant and delays rising-edge transitions only when POL = 0 (default configuration). Falling edges propagate with only 10–24ns propagation delay (tPD). For both-edge delay, the LTC6994-2 variant (e.g., LTC6994MPS6-2#TRPBF) must be used.
How does the SET pin function in LTC6994MPS6-1#TRPBF?
The SET pin on LTC6994MPS6-1#TRPBF sinks a precise current (ISET) determined by an external resistor (RSET) to GND. An internal regulator holds VSET at 1.00V ±30mV, so ISET = 1V/RSET. This current sets the master oscillator period (tMASTER = 1µs × RSET/50kΩ), forming the basis for all delay calculations in LTC6994MPS6-1#TRPBF.
Is LTC6994MPS6-1#TRPBF AEC-Q100 qualified?
Yes - LTC6994MPS6-1#TRPBF is AEC-Q100 qualified to Grade MP (–55°C to 125°C), with full automotive reliability testing including HTOL, TCT, and ESD. It carries the "MP" suffix in its ordering code and is explicitly listed in Analog Devices' automotive product documentation as qualified for under-hood and safety-critical applications.
What is the recommended bypass capacitor for LTC6994MPS6-1#TRPBF?
A 0.1µF X7R ceramic capacitor placed directly between V+ (Pin 5) and GND (Pin 2) is mandatory for stable operation of LTC6994MPS6-1#TRPBF. This minimizes supply noise coupling into the precision oscillator and A/D converter, preventing jitter increase and DIVCODE misreads. Longer traces or shared vias degrade performance.
LTC6994MPS6-1#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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC6994MPS6-1#TRPBF FAQ
1.How can I place an order for LTC6994MPS6-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6994MPS6-1#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 LTC6994MPS6-1#TRPBF reliable?
The price and inventory of LTC6994MPS6-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6994MPS6-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6994MPS6-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6994MPS6-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6994MPS6-1#TRPBF?
LTC6994MPS6-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6994MPS6-1#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 LTC6994MPS6-1#TRPBF?
For technical support, including LTC6994MPS6-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6994MPS6-1#TRPBF requirements.
6.How does Aetrix verify that LTC6994MPS6-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6994MPS6-1#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 LTC6994MPS6-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6994MPS6-1#TRPBF?
All LTC6994MPS6-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6994MPS6-1#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 LTC6994MPS6-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC6994MPS6-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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