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Analog Devices Inc. LTC6993HDCB-3#TRPBF
- Part No.:
- LTC6993HDCB-3#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6993HDCB-3#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,660
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Product details
Overview
LTC6993HDCB-3#TRPBF from Analog Devices is a falling-edge–triggered, non-retriggerable monostable multivibrator (one-shot) IC with programmable pulse width from 1µs to 33.6 seconds. It operates from 2.25V to 5.5V, consumes as low as 65µA at 2.25V/800kΩ, and delivers ±20mA CMOS output drive. It is used in missing-pulse detection and high-vibration envelope detection circuits requiring stable timing over –40°C to 125°C.
For engineers reviewing the LTC6993HDCB-3#TRPBF datasheet, LTC6993HDCB-3#TRPBF pinout, LTC6993HDCB-3#TRPBF application, or LTC6993HDCB-3#TRPBF equivalent, this page provides verified timing accuracy specs, DIVCODE–based polarity/division configuration, thermal drift data across NDIV settings, and validated automotive-grade DFN package details.
Technical Context
The LTC6993HDCB-3#TRPBF implements a master oscillator with 1µs base period, regulated VSET = 1.00V ±30mV, and internal 4-bit A/D converter for DIV pin voltage decoding. Its trigger logic responds exclusively to falling edges on TRIG, ignores subsequent triggers during active output, and enforces tARM = –4ns recovery time before rearming.
Pulse width is computed as tOUT = NDIV × RSET / 50kΩ × 1µs, where NDIV is selected from {1, 8, 64, 512, 4096, 32768, 262144, 2097152} via DIVCODE (0–15), and POL bit determines output polarity. Accuracy degrades predictably: ±2.3% for tOUT > 512µs, ±3.4% for 8–512µs, ±4.9% for 1–8µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse Width Range | 1µs to 33.6 seconds - supports ultra-low-frequency watchdogs and long-interval event timers without external RC networks. |
| Trigger Polarity | Falling-edge only - eliminates false triggering from noise-induced rising transients in noisy industrial environments. |
| Retrigger Capability | Non-retriggerable - ensures fixed-duration pulses regardless of repeated input glitches during output active state. |
| Supply Voltage | 2.25V to 5.5V - enables direct interface with Li-ion battery systems (2.7–4.2V) and 3.3V/5V logic domains. |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and industrial control applications per AEC-Q100. |
| Output Drive | ±20mA CMOS - directly drives LEDs, small relays, or logic inputs without external buffers. |
| Quiescent Current | 65µA at 2.25V/800kΩ - extends battery life in portable pulse-detection instruments. |
Pinout & Package
6-Lead (2mm × 3mm) Plastic DFN package with exposed pad (Pin 7) connected to GND; compatible with standard reflow profiles and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Falling-edge trigger input | Initiates output pulse on voltage transition from high to low; hysteresis prevents chatter on slow edges. |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance return path for SET, DIV, and output current; exposed pad must be soldered to PCB ground plane. |
| SET (Pin 3) | Pulse width programming node | Sinks ISET = VSET/RSET (1.25–20µA); VSET regulated to 1.00V ±30mV; ≤10pF capacitance required for stability. |
| DIV (Pin 4) | Divider ratio & polarity control | Voltage divider input decoded to 4-bit DIVCODE; sets NDIV (1–2097152) and output polarity (POL bit). |
| V+ (Pin 5) | Power supply input | 2.25–5.5V single supply; requires local 0.1µF ceramic bypass capacitor between V+ and GND. |
| OUT (Pin 6) | CMOS output driver | Rail-to-rail swing (GND to V+); 30Ω typical output resistance; sources/sinks up to ±20mA. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pulse width | 1µs–33.6s via single RSET resistor and DIV pin voltage - eliminates need for multiple timing capacitors or microcontroller intervention. |
| Falling-edge trigger + non-retriggerable mode | Guarantees deterministic one-shot behavior in presence of EMI or signal bounce - critical for safety-critical pulse validation. |
| Temperature-stable VSET regulation | 1.00V ±30mV with ±75µV/°C drift - ensures pulse width accuracy remains within ±2.3% over full –40°C to 125°C range when NDIV ≥ 512. |
| AEC-Q100 qualified | Rated for automotive under-hood operation (–40°C to 125°C) - meets stress test requirements for vibration, thermal cycling, and HTOL. |
| Low-power idle operation | 65–100µA quiescent current depending on RSET and V+ - enables always-on monitoring in battery-powered diagnostic tools. |
Applications
| Missing Pulse Detection | Envelope Detection |
|---|---|
|
Use Scenario: Monitoring periodic sensor signals (e.g., crankshaft position) where absence of expected edge indicates mechanical failure. IC Role / Device Role / Timing Role: Falling-edge–triggered one-shot that resets on each valid pulse; output stays low only if pulse is missed beyond programmed timeout. Use Value: Detects missing pulses down to 1µs intervals with <±2.3% timing error at high temperatures, enabling robust engine fault diagnostics. |
Use Scenario: Extracting amplitude envelope from high-frequency carrier signals (e.g., ultrasonic transducers or RF modulated sensors). IC Role / Device Role / Timing Role: Generates precise gate window synchronized to carrier zero-crossings; output pulse width defines integration period for peak-hold circuits. Use Value: Supports 8µs–33.6s adjustable windows with <±3.4% error in mid-range, improving SNR in vibration-resistant industrial NDT equipment. |
| Watchdog Timer | High-Vibration Timing |
|
Use Scenario: Supervising microcontroller activity in automotive ECUs where software hang must trigger safe-state activation within strict deadlines. IC Role / Device Role / Timing Role: Non-retriggerable monostable that asserts reset if host fails to issue periodic falling-edge strobes. Use Value: Guarantees reset assertion after exact timeout (e.g., 100ms ±2.3%) even under 20g vibration, eliminating firmware dependency. |
Use Scenario: Timing-critical functions in aerospace actuators or heavy machinery controls subject to sustained mechanical shock (>15g). IC Role / Device Role / Timing Role: Provides temperature-invariant pulse generation using NDIV ≥ 512 and RSET = 800kΩ to minimize drift sensitivity. Use Value: Limits pulse width drift to ±0.006%/°C over –40°C to 125°C, ensuring consistent valve actuation timing despite thermal gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993HDCB-4#TRPBF | Falling-edge trigger with retrigger capability; identical package, temp grade, and electrical specs except trigger response logic. | Required when output pulse must extend on successive falling edges (e.g., burst-mode signal validation). | Select LTC6993HDCB-4#TRPBF only if retriggering is needed; otherwise LTC6993HDCB-3#TRPBF avoids unintended pulse extension. |
| LTC6993IDCB-3#TRPBF | Same functionality and pinout but rated for –40°C to 85°C industrial temp range; lower cost; not AEC-Q100 qualified. | Suitable for commercial-grade instrumentation where extended temperature operation is unnecessary. | Choose LTC6993IDCB-3#TRPBF for cost-sensitive non-automotive designs; LTC6993HDCB-3#TRPBF is mandatory for under-hood use. |
Compared with LTC6993HDCB-4#TRPBF, the LTC6993HDCB-3#TRPBF provides deterministic non-retriggerable timing essential for fault detection, while versus LTC6993IDCB-3#TRPBF it delivers guaranteed performance at 125°C for automotive powertrain modules.
Availability
LTC6993HDCB-3#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial missing-pulse monitors, battery-powered diagnostic tools, and high-vibration envelope detectors requiring stable component supply across extended temperature ranges.
Supply support for LTC6993HDCB-3#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 precision instrumentation, industrial automation, and automotive markets since 1965.
The TimerBlox® family-including LTC6993HDCB-3#TRPBF-is designed for standalone, low-power, highly accurate timing functions without microcontroller overhead, targeting automotive safety systems and ruggedized industrial controls.
FAQ
What is the trigger behavior of the LTC6993HDCB-3#TRPBF?
The LTC6993HDCB-3#TRPBF responds exclusively to falling-edge transitions on the TRIG pin and is non-retriggerable-subsequent falling edges during an active output pulse are ignored until the pulse completes and the internal rearm timer expires. This ensures fixed-duration timing critical for fault detection and watchdog applications.
How do I set a 10ms output pulse width on the LTC6993HDCB-3#TRPBF?
To achieve ~10ms output, configure NDIV = 512 (DIVCODE = 3, VDIV/V+ ≈ 0.21875) and select RSET = 625kΩ, since tOUT = NDIV × RSET / 50kΩ × 1µs = 512 × 625k / 50k × 1µs = 10ms. Use 0.5% metal-film resistors for best accuracy and limit SET pin capacitance to <10pF.
Does the LTC6993HDCB-3#TRPBF support negative output polarity?
Yes-the LTC6993HDCB-3#TRPBF supports both positive and negative output pulses via the POL bit in DIVCODE. For example, DIVCODE = 7 yields NDIV = 2,097,152 and positive output, while DIVCODE = 8 gives same NDIV but inverted (negative) output, enabling flexible interface with downstream comparators or logic families.
What is the maximum output current capability of the LTC6993HDCB-3#TRPBF?
The LTC6993HDCB-3#TRPBF provides rail-to-rail CMOS output with ±20mA sourcing/sinking capability at V+ = 2.7–5.5V. At V+ = 2.25V, it delivers ±8mA. Output resistance is ~30Ω, so external series resistors are recommended when driving LEDs or low-impedance loads to maintain current limits.
Is the LTC6993HDCB-3#TRPBF qualified for automotive applications?
Yes-the LTC6993HDCB-3#TRPBF is AEC-Q100 qualified for automotive use with guaranteed operation from –40°C to 125°C. Its DFN package, thermal drift performance (±0.006%/°C for NDIV ≥ 512), and robust trigger hysteresis make it suitable for engine control, transmission, and ADAS subsystems.
LTC6993HDCB-3#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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x3)
LTC6993HDCB-3#TRPBF FAQ
1.How can I place an order for LTC6993HDCB-3#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993HDCB-3#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 LTC6993HDCB-3#TRPBF reliable?
The price and inventory of LTC6993HDCB-3#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6993HDCB-3#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993HDCB-3#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993HDCB-3#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993HDCB-3#TRPBF?
LTC6993HDCB-3#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993HDCB-3#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 LTC6993HDCB-3#TRPBF?
For technical support, including LTC6993HDCB-3#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993HDCB-3#TRPBF requirements.
6.How does Aetrix verify that LTC6993HDCB-3#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993HDCB-3#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 LTC6993HDCB-3#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993HDCB-3#TRPBF?
All LTC6993HDCB-3#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993HDCB-3#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 LTC6993HDCB-3#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993HDCB-3#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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