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Analog Devices Inc. LTC6993IDCB-2#TRPBF
- Part No.:
- LTC6993IDCB-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6993IDCB-2#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,939
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Product details
Overview
LTC6993IDCB-2#TRPBF from Analog Devices is a retriggerable rising-edge monostable multivibrator (one-shot pulse generator) with programmable output pulse width from 1µs to 33.6 seconds, ±2.3% accuracy for pulses >512µs, 70µA supply current at 10µs pulse width, and CMOS output capable of sourcing/sinking 20mA. It operates from 2.25V to 5.5V and is used in watchdog timers, missing pulse detection, and envelope detection circuits.
For engineers reviewing the LTC6993IDCB-2#TRPBF datasheet, LTC6993IDCB-2#TRPBF pinout, LTC6993IDCB-2#TRPBF application, or LTC6993IDCB-2#TRPBF equivalent, this page provides verified timing parameters, DFN-6 package layout, retrigger behavior, DIV/SET resistor programming details, and automotive-grade (-40°C to 85°C) qualification status.
Technical Context
The LTC6993IDCB-2#TRPBF implements a master oscillator with 1µs base period, programmable via ISET current sourced from the SET pin (1.25µA–20µA), and an internal 4-bit A/D converter on the DIV pin that selects NDIV values (1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹) and output polarity (POL bit). Its retrigger logic extends the output pulse on each valid rising-edge TRIG input before tOUT completion.
It features hysteresis on the TRIG pin (VIH ≈ 0.7·V+, VIL ≈ 0.3·V+), 500µs startup time, and ±75µV/°C VSET drift. The device uses a feedback-regulated 1V SET pin reference, making pulse width independent of VSET variation when RSET is used, with error dominated by RSET tolerance and inherent ±2.3% pulse width accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse width range | 1µs to 33.6 seconds - supports ultra-short timing events and long-duration timeouts without external RC networks. |
| Pulse width accuracy | ±2.3% for tOUT > 512µs - enables reliable timing-critical functions like watchdog reset windows and missing-pulse detection thresholds. |
| Supply voltage | 2.25V to 5.5V - compatible with Li-ion, 3.3V, and 5V systems without level-shifting. |
| Supply current (idle) | 70µA at V+ = 2.25V, RSET = 800kΩ, NDIV ≤ 64 - enables battery-powered operation for months in low-duty-cycle applications. |
| Output drive | ±20mA CMOS output - directly drives LEDs, logic inputs, or small MOSFET gates without buffer stages. |
| Operating temperature | –40°C to +85°C - qualified for industrial and automotive cabin environments per I-grade specification. |
| Package | 6-lead (2mm × 3mm) Plastic DFN - surface-mount footprint with exposed pad for thermal performance and board space efficiency. |
Pinout & Package
6-lead (2mm × 3mm) Plastic DFN package with exposed pad connected to GND; suitable for automated assembly and thermal dissipation in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Rising-edge trigger input | Initiates output pulse on each rising edge; retriggerable behavior extends tOUT until last valid edge - critical for burst-mode signal validation. |
| GND (Pin 2) | Ground reference | Low-inductance return path for all internal circuitry; exposed pad must be soldered to PCB ground plane for thermal and noise integrity. |
| SET (Pin 3) | Pulse width programming node | Sinks ISET (1.25–20µA); voltage regulated to 1.00V ±30mV - connects to precision RSET for stable tOUT independent of V+ drift. |
| DIV (Pin 4) | Divider ratio & polarity control | 4-bit A/D input setting NDIV (1–2²¹) and POL bit; requires <100pF capacitance and shielded routing to prevent timing jitter. |
| V+ (Pin 5) | Power supply | 2.25V–5.5V single supply; bypassed with 0.1µF capacitor directly to GND to suppress switching noise affecting oscillator stability. |
| OUT (Pin 6) | CMOS output driver | Swings rail-to-rail (GND to V+); sources/sinks 20mA - drives logic loads, LEDs, or gate resistors without external buffers. |
Key Features
| Feature | Design Value |
|---|---|
| Retriggerable rising-edge operation | Enables dynamic pulse extension in response to periodic signals - essential for validating continuous data streams or sensor activity. |
| Programmable NDIV up to 2²¹ | Extends base 1µs timing resolution to 33.6s maximum pulse width using only two external resistors (RSET + R1/R2 divider). |
| 1V-regulated SET pin | Eliminates V+ dependency in tOUT calculation when using RSET, reducing supply sensitivity to <0.2% over 2.25V–5.5V range. |
| ±20mA CMOS output | Directly interfaces with standard logic families, optocouplers, or MOSFET gates - removes need for discrete driver stages. |
| AEC-Q100 qualified variants available | Supports automotive subsystems requiring reliability validation; LTC6993IDCB-2#TRPBF meets I-grade temp range (–40°C to +85°C). |
Applications
| Watchdog Timer | Missing Pulse Detection |
|---|---|
|
Use Scenario: Monitors microcontroller activity in safety-critical embedded systems; resets host if no periodic "kick" signal arrives within timeout window. IC Role / Device Role / Timing Role: Monostable one-shot generating precise, retriggerable timeout interval - ensures system recovery even during software hangs or interrupt latency spikes. Use Value: Eliminates external RC timing components and improves accuracy to ±2.3%, reducing false resets and enabling tighter watchdog windows. |
Use Scenario: Detects interruption in periodic encoder, clock, or sensor signals in motor control or industrial automation. IC Role / Device Role / Timing Role: Rising-edge retriggerable timer whose output stays high while pulses arrive; goes low after gap exceeds programmed tOUT. Use Value: Provides deterministic, resistor-programmed fault detection threshold without firmware overhead or CPU polling. |
| Envelope Detection | High-Vibration Environments |
|
Use Scenario: Extracts amplitude envelope from modulated RF carriers (e.g., 80kHz) in battery-powered IoT sensors. IC Role / Device Role / Timing Role: One-shot triggered by carrier zero-crossings; pulse width set to match modulation period for peak-hold emulation. Use Value: Replaces op-amp diode-capacitor circuits with single-chip solution offering 1µs–33.6s range and 70µA quiescent current. |
Use Scenario: Timing circuitry in automotive engine control units or industrial machinery subjected to shock and wide temperature swings. IC Role / Device Role / Timing Role: Industrial-grade monostable providing stable pulse generation across –40°C to +85°C with <±0.008%/°C drift. Use Value: Maintains timing integrity under mechanical stress where ceramic capacitors or traditional timers exhibit parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993IS6-2#TRPBF | Same functionality and electrical specs, but in TSOT-23-6 package (1mm height, smaller footprint) | Better suited for ultra-thin or space-constrained PCBs; thermal resistance θJA = 192°C/W vs. 64°C/W for DFN | Select when board area or profile is constrained; verify thermal margin given higher junction-to-ambient resistance. |
| TLV3012IPW | Comparator-based one-shot with fixed 1ms pulse; no programmability, no retrigger, no DIV/SET resistor interface | Limited to simple edge-detection with fixed delay; lacks precision, range, or configurability of LTC6993IDCB-2#TRPBF | Only for cost-sensitive, non-critical applications where 1ms fixed delay suffices and retriggering is unnecessary. |
Compared with LTC6993IS6-2#TRPBF, the LTC6993IDCB-2#TRPBF offers superior thermal performance and board-level robustness in DFN packaging, while TLV3012IPW provides no timing flexibility - making the LTC6993IDCB-2#TRPBF the only choice for programmable, retriggerable, wide-range industrial timing.
Availability
LTC6993IDCB-2#TRPBF is available at Aetrix Electronics and suitable for watchdog timer implementations, missing pulse detection circuits, and envelope detection systems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LTC6993IDCB-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 is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial, and automotive markets.
The TimerBlox® family, including LTC6993IDCB-2#TRPBF, was designed to replace unreliable RC-based timing circuits with silicon-accurate, programmable, and retriggerable monostable solutions for embedded control and signal conditioning.
FAQ
What is the minimum and maximum pulse width achievable with LTC6993IDCB-2#TRPBF?
The LTC6993IDCB-2#TRPBF supports a pulse width range from 1µs to 33.6 seconds. Minimum width occurs with NDIV = 1 and RSET = 50kΩ; maximum with NDIV = 2²¹ and RSET = 800kΩ. Accuracy is ±2.3% for pulses longer than 512µs, degrading to ±4.9% at 1µs due to inherent oscillator limitations. All values are confirmed in the Rev. F datasheet Electrical Characteristics table.
How does the retrigger functionality of LTC6993IDCB-2#TRPBF work in practice?
LTC6993IDCB-2#TRPBF extends its output pulse on every valid rising edge at the TRIG pin before the initial tOUT completes. For example, if tOUT is set to 10ms and triggers occur at t=2ms, t=5ms, and t=8ms, the OUT pin remains high until 10ms after the final trigger (t=18ms). This behavior is intrinsic to the LTC6993-2 variant and is validated in Figure 4 of the datasheet.
Can LTC6993IDCB-2#TRPBF generate negative output pulses?
Yes, LTC6993IDCB-2#TRPBF can generate negative (low-going) output pulses by configuring the DIV pin to select a DIVCODE where the POL bit = 1 (e.g., DIVCODE = 8–15). This polarity inversion is implemented internally and does not require external inverters. Table 1 in the datasheet lists exact resistor pairs (R1/R2) to achieve each POL/NDIV combination.
What is the recommended bypassing strategy for LTC6993IDCB-2#TRPBF?
A 0.1µF ceramic capacitor must be placed directly between V+ (Pin 5) and GND (Pin 2), with minimal trace length and no vias, to suppress high-frequency noise coupling into the master oscillator. Additional bulk capacitance (e.g., 1µF–10µF) may be added nearby for low-frequency supply stability, but the 0.1µF local bypass is mandatory per the Pin Functions section and Figure 1 of the datasheet.
Is LTC6993IDCB-2#TRPBF qualified for automotive applications?
LTC6993IDCB-2#TRPBF is specified for –40°C to +85°C operation (I-grade) and is part of the TimerBlox family qualified to AEC-Q100 standards. While this specific DFN variant is not marked with a #W suffix (automotive-specific flow), its I-grade temperature range and characterization meet requirements for non-safety-critical automotive cabin applications such as infotainment or body control modules.
LTC6993IDCB-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LTC®6993
- Package/Case:
- 6-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Monostable
- Independent Circuits:
- 1
- Schmitt Trigger Input:
- No
- Propagation Delay:
- 11 ns
- Current - Output High, Low:
- 16mA, 16mA
- Voltage - Supply:
- 2.25 V ~ 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x3)
LTC6993IDCB-2#TRPBF FAQ
1.How can I place an order for LTC6993IDCB-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993IDCB-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 LTC6993IDCB-2#TRPBF reliable?
The price and inventory of LTC6993IDCB-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 LTC6993IDCB-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993IDCB-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993IDCB-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993IDCB-2#TRPBF?
LTC6993IDCB-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993IDCB-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 LTC6993IDCB-2#TRPBF?
For technical support, including LTC6993IDCB-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993IDCB-2#TRPBF requirements.
6.How does Aetrix verify that LTC6993IDCB-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993IDCB-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 LTC6993IDCB-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993IDCB-2#TRPBF?
All LTC6993IDCB-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993IDCB-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 LTC6993IDCB-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993IDCB-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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