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Analog Devices Inc. LTC6993HDCB-4#TRPBF
- Part No.:
- LTC6993HDCB-4#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6993HDCB-4#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,747
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Product details
Overview
LTC6993HDCB-4#TRPBF from Analog Devices is a falling-edge-triggered, retriggerable monostable multivibrator (one-shot) IC 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 RSET resistor and DIV pin voltage, and operates from 2.25V to 5.5V supply. It delivers ±20mA CMOS output drive and supports automotive-grade operation from –40°C to 125°C in a 6-lead DFN package.
For engineers reviewing the LTC6993HDCB-4#TRPBF datasheet, LTC6993HDCB-4#TRPBF pinout, LTC6993HDCB-4#TRPBF application, or LTC6993HDCB-4#TRPBF equivalent, key selection criteria include falling-edge trigger polarity, retrigger capability, temperature-rated DFN packaging, pulse width accuracy across NDIV settings, and dynamic control via SET/DIV analog inputs.
Technical Context
The LTC6993HDCB-4#TRPBF implements a precision analog-controlled timing architecture: a regulated 1V SET pin enables current-based oscillator programming (ISET = 1.25µA–20µA), while a 4-bit A/D converter on the DIV pin selects both NDIV (1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹) and output polarity (POL bit). Its falling-edge trigger with hysteresis ensures robust edge detection across supply voltages.
Unlike fixed-delay timers, this device supports real-time pulse width adjustment via VSET or VDIV changes post-startup, with settling time of 6×tMASTER. The internal POR and digital filter suppress false triggering, and the output driver maintains <30Ω source/sink impedance with fast rise/fall times (≤2.7ns at 2.25V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse width range | 1µs to 33.6 seconds - covers ultra-short timing (digital strobes) and long-duration events (system watchdog timeouts) |
| Trigger polarity & retrigger | Falling-edge sensitive with retrigger capability - extends output pulse on successive falling edges without reset delay |
| Supply voltage | 2.25V to 5.5V - compatible with Li-ion, 3.3V, and 5V logic domains without level-shifting |
| Operating temperature | –40°C to 125°C - qualified for under-hood automotive and industrial environments |
| Output drive | ±20mA CMOS - directly drives LEDs, MOSFET gates, or logic inputs without external buffers |
| Pulse accuracy | ±2.3% (tOUT > 512µs), ±3.4% (8µs–512µs), ±4.9% (1µs–8µs) - enables predictable timing in safety-critical one-shot functions |
| Quiescent current | 65µA at 2.25V/800kΩ/RSET - supports battery-powered envelope detection with low duty-cycle operation |
Pinout & Package
Package: 6-lead (2mm × 3mm) plastic DFN with exposed pad (Pin 7) connected to GND. Low-profile 1mm height suits space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Falling-edge trigger input | Initiates output pulse on signal transition from high to low; includes hysteresis (VIL ≈ 0.3×V+, VIH ≈ 0.7×V+) for noise immunity |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance return path for SET, TRIG, and output currents; exposed pad must be soldered to PCB ground plane |
| SET (Pin 3) | Pulse width programming node | Sinks ISET (1.25–20µA); VSET regulated to 1.00V ±30mV - sets tMASTER = 1µs × RSET/50kΩ |
| DIV (Pin 4) | Divider ratio & polarity control | Voltage-fed 4-bit A/D input (VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%) - selects NDIV and POL bit simultaneously |
| V+ (Pin 5) | Power supply input | 2.25V–5.5V single supply; requires 0.1µF ceramic bypass capacitor directly to GND |
| OUT (Pin 6) | CMOS output driver | Full rail-to-rail swing (GND to V+); sources/sinks 20mA; rise/fall times ≤2.7ns at 2.25V with 5pF load |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pulse width | 1µs–33.6s via single RSET resistor and DIV voltage divider - eliminates need for external RC networks or microcontroller timing loops |
| Falling-edge retriggering | Enables indefinite pulse extension on consecutive falling triggers - ideal for missing-pulse detection where signal dropout resets timing |
| Temperature-stable timing | ±0.006%/°C drift (NDIV ≥ 512) and ±0.008%/°C (NDIV ≤ 64) - maintains accuracy over full –40°C to 125°C range without calibration |
| Low-power operation | 65µA idle current at 2.25V/800kΩ - enables multi-year battery life in portable envelope detectors and watchdog circuits |
| Automotive qualification | AEC-Q100 Grade H (–40°C to 125°C) - meets reliability and stress-test requirements for automotive powertrain and body electronics |
Applications
| Watchdog Timer | Missing Pulse Detection |
|---|---|
Use Scenario: Monitors microcontroller activity in automotive ECUs by requiring periodic falling-edge pulses to prevent system reset. IC Role / Device Role / Timing Role: Falling-edge retriggerable one-shot that holds reset line inactive only while pulses arrive within programmed window. Use Value: Prevents spurious resets during transient EMI; leverages built-in hysteresis and wide temperature range for under-hood reliability. | Use Scenario: Detects loss of encoder or sensor clock signals in motor control systems. IC Role / Device Role / Timing Role: Generates fault flag when falling-edge input stops arriving for longer than programmed timeout (e.g., 10ms). Use Value: Uses retriggering to extend timeout only on valid edges - rejects noise spikes while responding instantly to true signal loss. |
| Envelope Detection | High-Vibration Timing |
Use Scenario: Extracts amplitude envelope from RF-modulated carrier signals in portable medical sensors. IC Role / Device Role / Timing Role: One-shot triggered by carrier zero-crossings; output pulse width tracks modulation depth via SET pin voltage. Use Value: Replaces op-amp diode-capacitor circuits with stable, low-drift timing - immune to supply ripple and temperature drift. | Use Scenario: Provides precise timing windows for data acquisition in aerospace accelerometers subject to mechanical shock. IC Role / Device Role / Timing Role: Generates gated sampling windows synchronized to vibration events using falling-edge trigger from piezo sensor. Use Value: Maintains ±2.3% pulse accuracy over –40°C to 125°C and survives 10,000g shocks due to monolithic silicon construction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993HDCB-2#TRPBF | Rising-edge trigger, retriggerable; identical package, temp grade, and timing specs | Requires rising-edge input signal instead of falling-edge; same pulse width programming and output drive | Select when host system generates rising-edge wake-up or sync signals rather than falling-edge interrupts |
| LTC6993HDCB-3#TRPBF | Falling-edge trigger, non-retriggerable; same package, temp grade, and timing range | Output pulse terminates after first falling edge and ignores subsequent triggers until complete | Choose for single-event timing (e.g., power-on delay) where pulse extension is undesirable |
Compared with LTC6993HDCB-2#TRPBF and LTC6993HDCB-3#TRPBF, the LTC6993HDCB-4#TRPBF uniquely combines falling-edge sensitivity with retriggerability - enabling adaptive timeout extension in fault-monitoring and envelope-tracking systems where input edge polarity and dynamic pulse length are critical.
Availability
LTC6993HDCB-4#TRPBF is available at Aetrix Electronics and suitable for automotive watchdog timers, industrial missing-pulse detectors, portable envelope detectors, and high-vibration timing applications requiring stable component supply across extended temperature ranges.
Supply support for LTC6993HDCB-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and automotive systems.
The TimerBlox® family, including LTC6993HDCB-4#TRPBF, was designed to replace discrete RC timers and microcontroller-based timing functions with pin-configurable, temperature-stable silicon timing solutions for harsh-environment applications.
FAQ
What is the trigger behavior of the LTC6993HDCB-4#TRPBF?
The LTC6993HDCB-4#TRPBF is a falling-edge-triggered, retriggerable monostable multivibrator. A falling transition on the TRIG pin initiates the output pulse, and subsequent falling edges occurring before pulse completion extend the output duration. This behavior is confirmed in Table 2 and Figure 4 of the datasheet, distinguishing it from non-retriggerable or rising-edge variants like LTC6993-1 or LTC6993-3.
How do I program the pulse width for the LTC6993HDCB-4#TRPBF?
Program the pulse width of the LTC6993HDCB-4#TRPBF using two analog inputs: connect a resistor (RSET) between SET and GND to set tMASTER = 1µs × RSET/50kΩ, and apply a voltage to DIV (VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%) to select NDIV (1 to 2²¹). The final pulse width is tOUT = NDIV × RSET/50kΩ × 1µs, as defined in the "Operation" section and Equation on page 12.
Does the LTC6993HDCB-4#TRPBF support operation at 2.25V supply?
Yes, the LTC6993HDCB-4#TRPBF operates from 2.25V to 5.5V, with verified performance across this range. Electrical Characteristics tables specify parameters at 2.25V (e.g., IS(IDLE) = 65µA, VOL = 0.07V at 8mA sink), and Absolute Maximum Ratings confirm 2.25V as the minimum functional supply voltage for the –40°C to 125°C temperature grade.
What is the maximum output current drive capability of the LTC6993HDCB-4#TRPBF?
The LTC6993HDCB-4#TRPBF provides ±20mA CMOS output drive, as specified in the Electrical Characteristics table under IOUT(MAX). This allows direct interfacing with LEDs, logic inputs, or MOSFET gates without external buffers. VOH and VOL values are guaranteed across supply voltages (e.g., VOH = 2.17V at 2.25V/–1mA) and load conditions.
Is the LTC6993HDCB-4#TRPBF qualified for automotive applications?
Yes, the LTC6993HDCB-4#TRPBF carries the "H" temperature grade (–40°C to 125°C) and is explicitly stated as AEC-Q100 qualified for automotive applications in the Features and Ordering sections. Its DFN package, tested reliability, and guaranteed parametric performance across the full automotive temperature range meet stringent automotive quality requirements.
LTC6993HDCB-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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x3)
LTC6993HDCB-4#TRPBF FAQ
1.How can I place an order for LTC6993HDCB-4#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993HDCB-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 LTC6993HDCB-4#TRPBF reliable?
The price and inventory of LTC6993HDCB-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 LTC6993HDCB-4#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993HDCB-4#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993HDCB-4#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993HDCB-4#TRPBF?
LTC6993HDCB-4#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993HDCB-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 LTC6993HDCB-4#TRPBF?
For technical support, including LTC6993HDCB-4#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993HDCB-4#TRPBF requirements.
6.How does Aetrix verify that LTC6993HDCB-4#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993HDCB-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 LTC6993HDCB-4#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993HDCB-4#TRPBF?
All LTC6993HDCB-4#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993HDCB-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 LTC6993HDCB-4#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993HDCB-4#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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