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Analog Devices Inc. LTC6994MPS6-2#TRPBF
- Part No.:
- LTC6994MPS6-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Delay Lines
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC6994MPS6-2#TRPBF.pdf
- Description:
- IC DELAY BLOCK 8TAP PROG TSOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LTC6994MPS6-2#TRPBF 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 –55°C to 125°C, and delivers 20mA CMOS output drive - used in automotive switch debouncing and high-vibration sensor signal qualification.
For engineers reviewing the LTC6994MPS6-2#TRPBF datasheet, LTC6994MPS6-2#TRPBF pinout, LTC6994MPS6-2#TRPBF application, or LTC6994MPS6-2#TRPBF equivalent, this page provides verified timing accuracy specs, TSOT-23 package layout, dual-edge delay behavior, AEC-Q100 qualification status, and real-world use cases in pulse qualification and delay matching circuits.
Technical Context
The LTC6994MPS6-2#TRPBF implements a master oscillator (tMASTER = 1µs × RSET/50kΩ) feeding an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 215, 218, 221) to generate precise delays up to 33.6 seconds. Its internal 4-bit A/D converter reads VDIV to set NDIV and polarity (POL bit), enabling both-edge delay plus optional output inversion.
It features hysteresis on the IN pin (VIH ≈ 0.55×V+ + 185mV, VIL ≈ 0.48×V+ – 155mV), regulated 1V SET pin reference (±30mV), and power-on reset with 500×tMASTER start-up time (typ. 500µs at RSET = 50kΩ). Delay settling occurs within 6×tMASTER after ISET change.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Delay Range | 1µs to 33.6 seconds - fully programmable via single RSET resistor and DIV pin voltage; enables wide-range timing without external counters. |
| Delay Accuracy | ±2.3% max (for tDELAY > 512µs) - ensures reliable pulse qualification and noise discrimination in safety-critical automotive systems. |
| Supply Voltage | 2.25V to 5.5V - supports direct interface with 3.3V and 5V logic families while maintaining full delay range and accuracy. |
| Operating Temp | –55°C to 125°C - qualified per AEC-Q100 Grade MP, suitable for under-hood automotive and industrial embedded control. |
| Output Drive | ±20mA CMOS - drives capacitive loads up to 5pF and resistive loads directly, eliminating need for external buffers in most debounce applications. |
| Quiescent Current | 65µA (typ.) at V+ = 2.25V, RSET = 800kΩ, NDIV ≥ 512 - enables ultra-low-power operation in battery-powered portable equipment. |
| Start-Up Time | 500µs (typ.) - determined by master oscillator period; ensures predictable initialization before first input edge is processed. |
Pinout & Package
Package: 6-Lead Plastic TSOT-23 (ThinSOT™), 1mm profile, exposed pad optional, rated for –55°C to 125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Logic Input | Accepts digital signals with hysteresis; rising/falling edges trigger delay based on POL bit; minimum pulse width 5ns at 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 current ISET = VSET/RSET; VSET regulated to 1.00V ±30mV; sets master oscillator frequency and thus tDELAY base. |
| OUT (Pin 6) | CMOS Output | Push-pull driver swinging rail-to-rail (GND to V+); sources/sinks 20mA; rise/fall times ≤2.7ns at 2.25V with 5pF load. |
| V+ (Pin 5) | Power Supply | 2.25V–5.5V single supply; requires 0.1µF ceramic bypass capacitor directly to GND; ripple <10mV p-p recommended. |
| DIV (Pin 4) | Divider & Polarity Control | 4-bit A/D input; voltage ratio VDIV/V+ selects NDIV (1–221) and POL bit (output inversion for LTC6994-2). |
Key Features
| Feature | Design Value |
|---|---|
| Dual-edge delay with inversion option | LTC6994MPS6-2#TRPBF delays both rising and falling transitions and supports output polarity reversal via DIV pin - essential for generating clean pulses from noisy mechanical switches. |
| Programmable delay via single resistor | RSET (50kΩ–800kΩ) sets master oscillator period; eliminates need for external clock sources or complex digital timing logic. |
| AEC-Q100 qualified for automotive | Rated for –55°C to 125°C junction temperature and qualified per AEC-Q100 Rev H, enabling use in engine control, body electronics, and ADAS subsystems. |
| Low-jitter, low-drift timing | Delay drift ≤±0.006%/°C (NDIV ≥512); peak-to-peak jitter as low as 0.03% for NDIV = 4096 - critical for deterministic timing in safety-relevant functions. |
| Noise-immune input with hysteresis | IN pin threshold adapts to V+ (VIH ≈ 0.55×V+ + 185mV, VIL ≈ 0.48×V+ – 155mV), rejecting sub-µs glitches common in high-vibration environments. |
Applications
| Automotive Switch Debouncing | Noise Discriminator for Sensor Signals |
|---|---|
|
Use Scenario: Mechanical switch inputs in door modules, seat controls, or HVAC panels generate contact bounce lasting 1–10ms. IC Role / Device Role / Timing Role: LTC6994MPS6-2#TRPBF delays both edges and filters out transients shorter than programmed tDELAY, delivering clean, glitch-free logic levels to microcontroller GPIOs. Use Value: Eliminates need for firmware-based debouncing or RC networks; reduces MCU interrupt load and improves system responsiveness. |
Use Scenario: Hall-effect or reed switch sensors in transmission or suspension systems output noisy pulses under high vibration. IC Role / Device Role / Timing Role: LTC6994MPS6-2#TRPBF acts as a pulse qualifier - only passes input transitions sustained longer than tDELAY, rejecting EMI-induced false triggers. Use Value: Improves functional safety integrity (ASIL-B compatible design) by preventing erroneous gear position or suspension state reporting. |
| Delay Matching in Dual-Channel Systems | Portable Equipment Power-On Sequencing |
|
Use Scenario: Two independent analog signal paths require synchronized enable timing to avoid transient mismatches during calibration. IC Role / Device Role / Timing Role: LTC6994MPS6-2#TRPBF provides identical, resistor-programmed delays to two separate enable lines, ensuring simultaneous activation within ±2.3% tolerance. Use Value: Guarantees matched propagation across channels without FPGA or microcontroller intervention - simplifies BOM and reduces validation effort. |
Use Scenario: Battery-powered medical monitors or handheld test instruments require controlled power-up sequencing between analog front-end and digital core. IC Role / Device Role / Timing Role: LTC6994MPS6-2#TRPBF generates precise, low-current delay (e.g., 100ms) after main supply stabilization to gate secondary regulator enable. Use Value: Reduces quiescent current to 65µA typical, extending battery life while ensuring robust startup behavior across temperature and voltage variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable delay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816EUK+T | Fixed 10ms/20ms/40ms delay; no resistor programming; 2.7V–5.5V supply; –40°C to 125°C. | Only three discrete delay values; lacks dual-edge delay and inversion; suited for simple debounce where flexibility is not required. | Select MAX6816EUK+T when fixed delay values suffice and board space is constrained - it uses SOT-23-5 but offers no RSET tuning. |
| SN74LVC1G123DCKR | Retriggerable monostable multivibrator; 5ns–10s range via R/C; 1.65V–5.5V; –40°C to 125°C; higher jitter (>1% typical). | Requires external capacitor; delay varies with temp/voltage; no built-in hysteresis or AEC-Q100 qualification. | Choose SN74LVC1G123DCKR for cost-sensitive non-automotive designs needing basic one-shot functionality, but verify jitter and temp drift meet system requirements. |
Compared with MAX6816EUK+T and SN74LVC1G123DCKR, the LTC6994MPS6-2#TRPBF delivers superior delay accuracy (±2.3% vs ±5%–10%), integrated hysteresis, AEC-Q100 qualification, and true dual-edge delay - making it the preferred choice for automotive and high-reliability industrial timing.
Availability
LTC6994MPS6-2#TRPBF is available at Aetrix Electronics and suitable for automotive switch debouncing, industrial sensor noise filtering, and portable equipment power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6994MPS6-2#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 since 1965.
The TimerBlox® family - including the LTC6994MPS6-2#TRPBF - was designed to replace discrete RC timers and microcontroller-based timing functions with highly accurate, low-power, easy-to-use silicon timing blocks for embedded systems.
FAQ
What is the maximum delay achievable with the LTC6994MPS6-2#TRPBF?
The LTC6994MPS6-2#TRPBF supports a maximum delay of 33.6 seconds, achieved when NDIV = 221 (2,097,152) and RSET = 800kΩ. This is calculated using tDELAY = NDIV × RSET / 50kΩ × 1µs. The device maintains ±5.1% accuracy even at the shortest 1µs delay, making it suitable for both precision microsecond and long-duration second-scale timing.
How does the LTC6994MPS6-2#TRPBF differ from the LTC6994-1 variant?
The LTC6994MPS6-2#TRPBF is the LTC6994-2 variant, meaning it delays both rising and falling edges of the input signal and supports output inversion via the POL bit (DIV pin MSB). In contrast, the LTC6994-1 only delays one edge (rising or falling, selected by POL). Both share identical delay range, accuracy, and package - but only LTC6994MPS6-2#TRPBF enables true pulse-width generation and inverting delay behavior.
Is the LTC6994MPS6-2#TRPBF qualified for automotive applications?
Yes, the LTC6994MPS6-2#TRPBF is AEC-Q100 qualified for automotive applications (Grade MP, –55°C to 125°C). Its datasheet specifies guaranteed operation across this full temperature range, with tested reliability including HTOL, TC, and ESD performance aligned to automotive standards - making it suitable for under-hood and chassis-mounted electronic control units.
Can the LTC6994MPS6-2#TRPBF be used with a 2.5V supply?
Yes, the LTC6994MPS6-2#TRPBF operates from 2.25V to 5.5V, so 2.5V is fully supported. At 2.5V, it delivers ±20mA output drive, 24ns propagation delay, and maintains full delay accuracy (±2.3% for tDELAY > 512µs). Quiescent current drops to 65µA typical with RSET = 800kΩ, optimizing battery life in portable 2.5V systems.
What is the role of the DIV pin on the LTC6994MPS6-2#TRPBF?
The DIV pin on the LTC6994MPS6-2#TRPBF serves a dual function: its voltage (VDIV) is converted by an internal 4-bit A/D to select the programmable divider ratio (NDIV = 1 to 221) and the polarity bit (POL). For LTC6994MPS6-2#TRPBF, POL = 1 enables output inversion. VDIV must be stable within ±1.5% of the ideal VDIV/V+ ratio to ensure correct NDIV and POL decoding.
LTC6994MPS6-2#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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC6994MPS6-2#TRPBF FAQ
1.How can I place an order for LTC6994MPS6-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6994MPS6-2#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 LTC6994MPS6-2#TRPBF reliable?
The price and inventory of LTC6994MPS6-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6994MPS6-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6994MPS6-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6994MPS6-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6994MPS6-2#TRPBF?
LTC6994MPS6-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6994MPS6-2#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 LTC6994MPS6-2#TRPBF?
For technical support, including LTC6994MPS6-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6994MPS6-2#TRPBF requirements.
6.How does Aetrix verify that LTC6994MPS6-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6994MPS6-2#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 LTC6994MPS6-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6994MPS6-2#TRPBF?
All LTC6994MPS6-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6994MPS6-2#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 LTC6994MPS6-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC6994MPS6-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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