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Analog Devices Inc. LTC6993IDCB-4#TRPBF
- Part No.:
- LTC6993IDCB-4#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6993IDCB-4#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,163
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Product details
Overview
LTC6993IDCB-4#TRPBF from Analog Devices is a falling-edge-triggered, retriggerable monostable multivibrator (one-shot pulse generator) with programmable pulse width from 1µs to 33.6 seconds. It uses an internal master oscillator and 8-step programmable divider (NDIV = 1 to 2²¹) set via resistor-divided DIV pin voltage, and features CMOS output sourcing/sinking 20mA. It operates from 2.25V to 5.5V supply and supports industrial temperature range (–40°C to +85°C) in a 6-lead DFN package.
For engineers reviewing the LTC6993IDCB-4#TRPBF datasheet, LTC6993IDCB-4#TRPBF pinout, LTC6993IDCB-4#TRPBF application, or LTC6993IDCB-4#TRPBF equivalent, key selection criteria include confirmed falling-edge trigger polarity, retrigger capability, ±2.3% pulse width accuracy for widths >512µs, 70µA supply current at 10µs pulse width, and compatibility with 2mm × 3mm DFN layout.
Technical Context
The LTC6993IDCB-4#TRPBF implements a digitally controlled analog timing architecture: a precision 1µs/50kΩ master oscillator sets tMASTER, which is multiplied by NDIV (programmed via 4-bit A/D conversion of VDIV) to determine tOUT. Its falling-edge-sensitive TRIG input enables synchronization to negative transitions, and retrigger logic extends output duration on successive valid triggers separated by ≥50ns (at V+ = 3.3V).
Internal regulation holds VSET at 1.00V ±30mV, making pulse width dependent solely on RSET tolerance and inherent timing error-eliminating supply and temperature drift dependencies when using a single external resistor. The device includes hysteresis on TRIG (VTRIG(RISING) ≈ 0.55·V+ + 185mV; VTRIG(FALLING) ≈ 0.48·V+ – 155mV) for robust noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse width range | 1µs to 33.6 seconds - covers ultra-short timing (e.g., digital pulse shaping) and long-duration events (e.g., watchdog timeout extensions). |
| Pulse width accuracy | ±2.3% max for tOUT > 512µs - ensures reliable timing margin in safety-critical monostable applications without calibration. |
| Supply voltage | 2.25V to 5.5V - supports direct interface with 3.3V and 5V logic, and battery-powered systems down to 2.25V. |
| Supply current | 70µA at 10µs pulse width (V+ = 2.25V, RSET = 800kΩ) - enables low-power operation in always-on sensor wake-up circuits. |
| Output drive | ±20mA CMOS - directly drives LEDs, small relays, or logic inputs without external buffers. |
| Operating temperature | –40°C to +85°C - qualified for industrial environments including motor control and PLC I/O modules. |
| Package | 6-lead (2mm × 3mm) DFN - surface-mount footprint compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
Package: 6-lead plastic DFN (2mm × 3mm), exposed pad connected to GND. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Falling-edge trigger input | Initiates output pulse on signal transition from HIGH to LOW; hysteresis prevents false triggering on noisy edges. |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance return path for SET, DIV, and output currents; exposed pad must be soldered to PCB ground plane. |
| SET (Pin 3) | Pulse width programming node | Regulated at 1.00V; sinking current ISET = VSET/RSET sets master oscillator period (tMASTER = 1µs × RSET/50kΩ). |
| DIV (Pin 4) | Divider ratio and polarity control | Voltage divider input converted to 4-bit DIVCODE; selects NDIV (1–2²¹) and output polarity (POL bit). |
| V+ (Pin 5) | Power supply | 2.25V–5.5V input; requires local 0.1µF ceramic bypass capacitor between V+ and GND pins. |
| OUT (Pin 6) | CMOS output driver | Swings rail-to-rail (GND to V+); sources/sinks 20mA; rise/fall times ≤2.7ns at V+ = 2.25V. |
Key Features
| Feature | Design Value |
|---|---|
| Falling-edge retriggerable trigger | Enables precise synchronization to negative-going system events (e.g., reset deassertion, fault flag clearance) while allowing pulse extension during ongoing activity. |
| Programmable NDIV up to 2²¹ | Extends maximum pulse width to 33.6 seconds using only passive resistors-eliminates need for external counters or microcontroller intervention. |
| 1V-regulated SET pin | Removes VSET drift as a timing error source; pulse width depends only on RSET tolerance and device intrinsic accuracy. |
| Industrial temperature grade (–40°C to +85°C) | Guaranteed performance across full range-no derating required for embedded control, power supply sequencing, or factory automation. |
| Low quiescent current (70µA) | Supports battery life >10 years in intermittent wake-up applications (e.g., environmental sensor polling every 10 seconds). |
Applications
| Watchdog Timer Extension | Missing Pulse Detection |
|---|---|
Use Scenario: Extending microcontroller watchdog timeout beyond internal timer limits to accommodate slow firmware recovery sequences. IC Role / Device Role / Timing Role: Monostable one-shot generating a precise, retriggerable reset-hold pulse synchronized to falling-edge watchdog feed signals. Use Value: Prevents spurious resets during multi-stage boot or flash update; 33.6s max width accommodates worst-case recovery without external logic. | Use Scenario: Detecting failure of periodic clock or data strobe signals in industrial fieldbus receivers. IC Role / Device Role / Timing Role: Falling-edge triggered monostable that outputs a logic HIGH only when expected pulses are absent longer than programmed tOUT. Use Value: Provides hardware-level fault detection with <2.3% timing error-immune to software lockup and faster than MCU-based polling. |
| Envelope Detection | High-Vibration Pulse Conditioning |
Use Scenario: Extracting amplitude envelope from modulated RF carrier signals in low-cost wireless sensor transmitters. IC Role / Device Role / Timing Role: One-shot triggered by each carrier zero-crossing (inverted), generating fixed-width pulses whose duty cycle reflects modulation depth. Use Value: Replaces op-amp diode-capacitor envelope detectors; eliminates component drift and enables stable DC-coupled output via RC filtering. | Use Scenario: Generating clean, jitter-free timing pulses in automotive engine control units subjected to mechanical shock and wide thermal cycling. IC Role / Device Role / Timing Role: Retriggerable monostable converting noisy crankshaft position sensor edges into deterministic, glitch-free timing windows. Use Value: 70µA supply current and –40°C to +85°C rating ensure reliability; 0.05% peak-to-peak jitter at NDIV = 64 maintains ignition timing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993IDCB-2#TRPBF | Rising-edge trigger, retriggerable; identical package, timing accuracy, and supply specs. | Requires positive-going trigger signal instead of falling-edge; unsuitable where system logic generates active-low event flags. | Select only if host controller provides rising-edge wake-up or reset signals. |
| MAX6816EUT+T | Dedicated debounce IC with 10ms/20ms/40ms fixed delays; no programmable width or retrigger capability. | Designed for switch debouncing-not configurable for arbitrary pulse generation or missing-pulse detection. | Use only for simple contact bounce suppression; not a functional substitute for programmable one-shot behavior. |
Compared with LTC6993IDCB-2#TRPBF and MAX6816EUT+T, the LTC6993IDCB-4#TRPBF uniquely delivers falling-edge retriggerability with 1µs–33.6s programmability-enabling hardware-level timing responses to negative logic events without firmware overhead or external components.
Availability
LTC6993IDCB-4#TRPBF is available at Aetrix Electronics and suitable for industrial control systems, automotive subsystems, and battery-powered IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6993IDCB-4#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 LTC6993IDCB-4#TRPBF-is designed for precision, low-power, and configuration-flexible silicon timing solutions that replace discrete RC networks and reduce MCU timing firmware complexity.
FAQ
What is the trigger polarity and retrigger behavior of the LTC6993IDCB-4#TRPBF?
The LTC6993IDCB-4#TRPBF is a falling-edge-triggered, retriggerable monostable. A transition from HIGH to LOW on the TRIG pin initiates the output pulse, and subsequent falling edges occurring before tOUT expires will extend the output HIGH time. This behavior is fixed per device variant and cannot be altered via configuration pins or registers.
How do I set a 10ms output pulse width on the LTC6993IDCB-4#TRPBF?
To achieve ~10ms output pulse width, select NDIV = 512 (DIVCODE = 3, VDIV/V+ = 0.21875 ±1.5%) and calculate RSET = (tOUT × 50kΩ) / (NDIV × 1µs) = (10ms × 50kΩ) / (512 × 1µs) ≈ 977kΩ. Use a 0.5% metal-film resistor from SET to GND and a precision resistor divider on DIV to set VDIV.
Does the LTC6993IDCB-4#TRPBF require external capacitors for stable operation?
Yes-the LTC6993IDCB-4#TRPBF requires a 0.1µF ceramic capacitor placed directly between V+ and GND pins for supply decoupling. Additionally, capacitance on the SET pin must be limited to <10pF and on the DIV pin to <100pF to prevent timing jitter and ensure accurate A/D conversion of DIVCODE.
What is the minimum pulse width the LTC6993IDCB-4#TRPBF can generate, and what accuracy applies?
The LTC6993IDCB-4#TRPBF supports a minimum output pulse width of 1µs. At this width, pulse width accuracy is ±4.9% (typical) over the full operating temperature range, as specified for NDIV = 1 and falling-edge variants (LTC6993-3/LTC6993-4). Accuracy improves to ±2.3% for widths exceeding 512µs.
Can the LTC6993IDCB-4#TRPBF drive an LED directly?
Yes-the LTC6993IDCB-4#TRPBF CMOS output can source or sink up to 20mA. To drive an LED, connect the anode to V+ and cathode to OUT through a current-limiting resistor calculated as R = (V+ − Vf) / 20mA. For example, with V+ = 3.3V and Vf = 2.0V, use R ≥ 65Ω. Avoid direct short-circuit loads.
LTC6993IDCB-4#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-4#TRPBF FAQ
1.How can I place an order for LTC6993IDCB-4#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993IDCB-4#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-4#TRPBF reliable?
The price and inventory of LTC6993IDCB-4#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-4#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993IDCB-4#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993IDCB-4#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993IDCB-4#TRPBF?
LTC6993IDCB-4#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993IDCB-4#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-4#TRPBF?
For technical support, including LTC6993IDCB-4#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993IDCB-4#TRPBF requirements.
6.How does Aetrix verify that LTC6993IDCB-4#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993IDCB-4#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-4#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993IDCB-4#TRPBF?
All LTC6993IDCB-4#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993IDCB-4#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-4#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993IDCB-4#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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