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Analog Devices Inc. LTC6993HS6-4#WTRPBF
- Part No.:
- LTC6993HS6-4#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC6993HS6-4#WTRPBF.pdf
- Description:
- TIMERBLOX: MONO PULSE GEN (ONE S
- Quantity:
- Payment:
- Shipping:
Inventory:1,042
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Product details
Overview
LTC6993HS6-4#WTRPBF from Analog Devices is a falling-edge-triggered, retriggerable monostable multivibrator (one-shot) in TSOT-23 package, delivering programmable pulse widths from 1µs to 33.6 seconds via RSET resistor and DIV pin voltage coding. It operates from 2.25V to 5.5V, draws as low as 55µA at 2.25V/800kΩ, and supports automotive-grade operation from –40°C to 125°C.
For engineers reviewing the LTC6993HS6-4#WTRPBF datasheet, LTC6993HS6-4#WTRPBF pinout, LTC6993HS6-4#WTRPBF application, or LTC6993HS6-4#WTRPBF equivalent, key selection criteria include falling-edge trigger polarity, retrigger capability, ±20mA CMOS output drive, pulse width accuracy (±4.9% min), and AEC-Q100 qualification for harsh-environment timing control.
Technical Context
The LTC6993HS6-4#WTRPBF implements a master oscillator with 1µs base period, programmable via ISET current sourced from the SET pin (1.25µA–20µA), and a digitally controlled divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹) set by a 4-bit A/D converter on the DIV pin. Its internal VSET regulation holds at 1.00V ±30mV.
Trigger detection uses supply-proportional hysteresis (VIH ≈ 0.7·V+, VIL ≈ 0.3·V+), enabling robust edge recognition on slow signals. The device features fast propagation delay (11–28ns), sub-50ns minimum trigger pulse width, and <0.85% peak-to-peak jitter at NDIV = 1 / V+ = 5.5V - all verified across –40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse width range | 1µs to 33.6 seconds - enables single-component timing from digital debouncing to watchdog timeout intervals |
| Trigger polarity & retrigger | Falling-edge sensitive with retrigger capability - allows pulse extension during active output, critical for missing-pulse detection |
| Supply voltage | 2.25V to 5.5V - supports direct interface with 3.3V and 5V logic, plus battery-backed systems down to 2.25V |
| Output drive | ±20mA CMOS - directly drives LEDs, MOSFET gates, or logic inputs without external buffers |
| Temp range | –40°C to 125°C - qualified per AEC-Q100 Grade H for under-hood automotive and industrial control |
| Pulse accuracy | ±4.9% (1µs–8µs), ±3.4% (8µs–512µs), ±2.3% (>512µs) - enables predictable timing without calibration |
| Quiescent current | 55µA at 2.25V/800kΩ - extends battery life in portable envelope detectors and low-duty-cycle sensors |
Pinout & Package
Package: 6-Lead Plastic TSOT-23 (0.95mm height), RoHS-compliant, lead-free finish. Exposed pad not present in S6 package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Falling-edge trigger input | Initiates output pulse on signal transition from high to low; hysteresis ensures noise immunity |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance return path for SET, TRIG, and output; must connect to solid ground plane |
| SET (Pin 3) | Pulse width programming node | Sinks precise ISET current (1.25–20µA); voltage regulated to 1.00V ±30mV for RSET-based timing |
| DIV (Pin 4) | Divider ratio & polarity control | Voltage-coded 4-bit input (VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%) sets NDIV and output polarity (POL bit) |
| V+ (Pin 5) | Power supply input | 2.25V–5.5V single supply; requires local 0.1µF ceramic bypass to GND |
| OUT (Pin 6) | CMOS output driver | Full-rail swing (GND to V+), 30Ω typical output impedance, ±20mA drive capability |
Key Features
| Feature | Design Value |
|---|---|
| Falling-edge retriggerable one-shot | Enables dynamic pulse extension in response to recurring events - essential for vibration-triggered safety interlocks |
| Programmable NDIV up to 2²¹ | Extends base 1µs timing resolution to 33.6s maximum pulse width using only two external resistors |
| AEC-Q100 Grade H qualification | Validated for automotive applications including engine control, ADAS sensor timing, and powertrain subsystems |
| Supply-independent VSET regulation | Maintains 1.00V ±30mV at SET pin regardless of V+ variation - eliminates supply-induced timing drift |
| Low-power idle mode | Draws ≤95µA at 2.25V/800kΩ when inactive - ideal for always-on battery-powered envelope detectors |
Applications
| Watchdog Timer | Missing Pulse Detection |
|---|---|
Use Scenario: Monitors microcontroller activity in automotive ECUs where failure must trigger safe shutdown within 100ms–5s. IC Role / Device Role / Timing Role: Falling-edge retriggerable one-shot resets on each MCU heartbeat; timeout occurs if pulses stop. Use Value: Eliminates need for external RC timing or dedicated watchdog ICs - reduces BOM count and layout area. | Use Scenario: Detects loss of periodic encoder signals in motor control systems operating under high vibration. IC Role / Device Role / Timing Role: Configured with 512µs–1ms pulse width; retriggered by each encoder edge; output goes low on missing pulse. Use Value: Tolerates mechanical jitter while reliably flagging true signal loss - avoids false trips in harsh environments. |
| Envelope Detection | High-Vibration Timing Control |
Use Scenario: Extracts amplitude envelope from 80kHz carrier-modulated ultrasonic sensor signals in portable medical devices. IC Role / Device Role / Timing Role: One-shot triggered by carrier zero-crossings; output pulse width matches modulation period. Use Value: Replaces analog diode-capacitor envelope circuits with stable, temperature-invariant digital timing. | Use Scenario: Generates precise gate-drive timing windows for SiC MOSFETs in EV traction inverters subject to >50g shock. IC Role / Device Role / Timing Role: Provides 1–10µs dead-time pulses with <0.85% jitter and –40°C to 125°C stability. Use Value: Ensures consistent switching margins despite thermal cycling and mechanical stress - prevents shoot-through. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993HS6-2#WTRPBF | Rising-edge trigger, retriggerable; identical package, temp range, and electrical specs | Requires rising-edge input signal instead of falling-edge; same pulse width programming and output behavior | Select when system trigger source is active-high or synchronized to clock rising edges |
| LTC6993IS6-4#TRPBF | Same falling-edge/retrigger functionality but rated for –40°C to 85°C (industrial grade), not automotive | Lacks AEC-Q100 qualification; unsuitable for automotive under-hood use but lower cost for commercial applications | Choose for non-automotive systems where extended temperature range is unnecessary and cost sensitivity is higher |
Compared with LTC6993HS6-2#WTRPBF and LTC6993IS6-4#TRPBF, the LTC6993HS6-4#WTRPBF uniquely combines falling-edge retriggering with AEC-Q100 Grade H qualification - making it the only drop-in solution for automotive missing-pulse detection where trigger polarity and reliability are jointly constrained.
Availability
LTC6993HS6-4#WTRPBF is available at Aetrix Electronics and suitable for automotive ECU watchdog timers, industrial vibration-resistant pulse monitors, and portable medical envelope detectors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6993HS6-4#WTRPBF 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 LTC6993HS6-4#WTRPBF - was designed to replace discrete RC timing networks and legacy 555-based circuits with highly accurate, temperature-stable, and programmable silicon timing solutions for space-constrained embedded systems.
FAQ
What is the trigger input behavior of the LTC6993HS6-4#WTRPBF?
The LTC6993HS6-4#WTRPBF is falling-edge sensitive on the TRIG pin and supports retriggering: each subsequent falling edge during an active output pulse extends the total pulse width by tOUT from that new trigger point. Its VIH and VIL thresholds scale with V+, ensuring reliable operation across 2.25V–5.5V supply voltages.
How do I set a 10ms output pulse width on the LTC6993HS6-4#WTRPBF?
To achieve ~10ms output pulse width, configure NDIV = 512 (DIVCODE = 3, VDIV/V+ ≈ 0.219) and select RSET = 640kΩ (tOUT = 512 × 640kΩ / 50kΩ × 1µs = 10.24ms). Use 0.5% metal-film resistors for best accuracy, and limit capacitance on SET and DIV pins to <10pF and <100pF respectively.
Does the LTC6993HS6-4#WTRPBF require external components to operate?
Yes - the LTC6993HS6-4#WTRPBF requires at minimum: (1) a 0.1µF ceramic capacitor from V+ to GND, (2) an RSET resistor from SET to GND to program pulse width, and (3) a resistor divider on DIV to set NDIV and output polarity. No external timing capacitors or crystals are needed.
What is the maximum output current drive capability of the LTC6993HS6-4#WTRPBF?
The LTC6993HS6-4#WTRPBF provides ±20mA CMOS output drive at V+ = 2.25V–5.5V, with VOH ≥ 2.17V (at 2.25V/–8mA) and VOL ≤ 0.54V (at 2.25V/8mA). For loads exceeding 20mA or requiring isolation, add a series current-limiting resistor or external buffer.
Is the LTC6993HS6-4#WTRPBF pin-compatible with other TimerBlox one-shots?
Yes - all LTC6993 variants in the S6 (TSOT-23) package share identical pinout: TRIG (1), GND (2), SET (3), DIV (4), V+ (5), OUT (6). This allows direct substitution between LTC6993HS6-1/2/3/4#WTRPBF for different trigger/retrigger/polarity configurations without PCB changes.
LTC6993HS6-4#WTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LTC®6993
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC6993HS6-4#WTRPBF FAQ
1.How can I place an order for LTC6993HS6-4#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993HS6-4#WTRPBF 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 LTC6993HS6-4#WTRPBF reliable?
The price and inventory of LTC6993HS6-4#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6993HS6-4#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993HS6-4#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993HS6-4#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993HS6-4#WTRPBF?
LTC6993HS6-4#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993HS6-4#WTRPBF 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 LTC6993HS6-4#WTRPBF?
For technical support, including LTC6993HS6-4#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993HS6-4#WTRPBF requirements.
6.How does Aetrix verify that LTC6993HS6-4#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993HS6-4#WTRPBF 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 LTC6993HS6-4#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993HS6-4#WTRPBF?
All LTC6993HS6-4#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993HS6-4#WTRPBF, 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 LTC6993HS6-4#WTRPBF part is unused and in its original packaging.
Return procedure for LTC6993HS6-4#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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