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Analog Devices Inc. LTC6993HDCB-2#TRPBF
- Part No.:
- LTC6993HDCB-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- 6-WFDFN Exposed Pad
- Datasheet:
-
LTC6993HDCB-2#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,852
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Product details
Overview
LTC6993HDCB-2#TRPBF from Analog Devices is a retriggerable rising-edge monostable multivibrator (one-shot) with programmable pulse width from 1µs to 33.6 seconds, ±2.3% accuracy for pulses >512µs, 70µA supply current at 10µs output 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 LTC6993HDCB-2#TRPBF datasheet, LTC6993HDCB-2#TRPBF pinout, LTC6993HDCB-2#TRPBF application, or LTC6993HDCB-2#TRPBF equivalent, this page delivers verified timing parameters, DFN-6 package layout, retrigger behavior, temperature-stable pulse width programming via RSET and DIV, and automotive-grade –40°C to 125°C operation.
Technical Context
The LTC6993HDCB-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 rising-edge trigger supports retriggering with tRETRIG ≥50ns at V+ = 3.3V.
It features hysteresis on TRIG (VTRIG(RISING) ≈ 0.55·V+ + 185mV), regulated VSET = 1.00V ±30mV, and pulse width drift of ±0.006%/°C for NDIV ≥512. The device uses no external capacitors-timing is resistor-programmed only-and achieves 500µs startup time with 1.0V reference stability over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse width range | 1µs to 33.6 seconds - fully resistor-programmable without external caps; enables single-component timing from microseconds to tens of seconds. |
| Pulse width accuracy | ±2.3% (typ) for tOUT > 512µs - ensures reliable timing in safety-critical watchdog and fault-detection applications. |
| Supply voltage | 2.25V to 5.5V - compatible with Li-ion, 3.3V, and 5V systems; includes power-on reset at 1.95V. |
| Operating temperature | –40°C to 125°C - qualified for under-hood automotive and industrial environments per AEC-Q100. |
| Output drive | ±20mA CMOS - directly drives LEDs, logic inputs, or small relays without external buffers. |
| Quiescent current | 65µA (typ) at V+ = 2.25V, RSET = 800kΩ, NDIV ≥ 512 - enables ultra-low-power battery operation. |
| Package | 6-lead (2mm × 3mm) DFN - low-profile, thermally enhanced footprint with exposed pad tied to GND. |
Pinout & Package
Package: 6-Lead (2mm × 3mm) Plastic DFN (DCB), 1mm profile, exposed thermal pad (Pin 7) connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Rising-edge trigger input | Initiates output pulse on rising edge; hysteresis prevents false triggering on noisy signals; minimum pulse width 5ns at 3.3V. |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance return path for SET, DIV, and OUT; exposed pad must be soldered to PCB ground plane for thermal and noise performance. |
| SET (Pin 3) | Pulse width programming node | Sinks ISET (1.25–20µA); VSET regulated to 1.00V ±30mV; connect RSET to GND for precision timing; <10pF capacitance required. |
| DIV (Pin 4) | Divider ratio & polarity control | Voltage-input 4-bit A/D sets NDIV (1–2²¹) and POL bit; resistor divider between V+ and GND sets VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%. |
| V+ (Pin 5) | Power supply input | 2.25V–5.5V operation; bypass with 0.1µF ceramic capacitor directly to GND; powers internal oscillator, logic, and output driver. |
| OUT (Pin 6) | CMOS output driver | Full rail-to-rail swing (GND to V+); 30Ω typical output impedance; sources/sinks 20mA; rise/fall times ≤2.7ns at 2.25V. |
Key Features
| Feature | Design Value |
|---|---|
| Retriggerable one-shot | Extends output pulse on successive rising-edge triggers; eliminates need for external logic or microcontroller intervention in pulse-stretching applications. |
| Resistor-only timing | No timing capacitors required-reduces BOM count, improves long-term stability, and avoids capacitor aging/leakage effects. |
| Wide pulse width range | 1µs–33.6s span covers both high-speed event capture and slow-system monitoring (e.g., thermal timeout, battery drain detection). |
| Automotive temperature grade | H-grade (–40°C to 125°C) with AEC-Q100 qualification ensures reliability in engine control, ADAS, and body electronics. |
| Programmable output polarity | DIV pin selects positive or negative output pulse via POL bit-enables direct interface with both active-high and active-low downstream circuitry. |
| Low supply current | As low as 55µA (min) at 2.25V idle-extends battery life in portable medical, IoT, and remote sensor nodes. |
Applications
| Watchdog Timer | Missing Pulse Detection |
|---|---|
|
Use Scenario: Monitors microcontroller activity in automotive ECUs by expecting periodic trigger pulses; resets system if pulse interval exceeds programmed timeout. IC Role / Device Role / Timing Role: Retriggerable monostable generating fixed-duration enable signal; output held high while pulses arrive, falling only after timeout. Use Value: Prevents system lockup without software overhead; leverages H-grade temp range and 125°C operation for under-hood deployment. |
Use Scenario: Detects failure of periodic clock or data stream in industrial PLCs, where loss of signal indicates sensor or communication fault. IC Role / Device Role / Timing Role: One-shot triggered by each incoming edge; output pulse width set longer than expected inter-pulse interval. Use Value: Output stays high during normal operation; falls low upon missing pulse-provides clean, jitter-immune fault flag. |
| Envelope Detection | High-Vibration Timing |
|
Use Scenario: Extracts amplitude envelope from modulated RF carrier (e.g., 80kHz ultrasound) in portable medical devices. IC Role / Device Role / Timing Role: Generates gated output pulse synchronized to carrier bursts; pulse width matches burst duration. Use Value: Replaces analog diode-capacitor detectors with stable, temperature-invariant digital timing; immune to supply ripple. |
Use Scenario: Provides timing reference in aerospace or heavy machinery sensors subjected to shock, vibration, and wide thermal swings. IC Role / Device Role / Timing Role: Generates precise delay or window signal for data acquisition windows or actuator sequencing. Use Value: Resistor-programmed timing avoids capacitor degradation under mechanical stress; ±0.006%/°C drift ensures accuracy across operating range. |
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 | Same functionality and pinout; rated for –40°C to 85°C (I-grade), not extended temperature. | Suitable for commercial/industrial equipment without under-hood or high-ambient requirements. | Select when full –40°C to 125°C range is unnecessary and cost optimization is prioritized. |
| LTC6993HS6-2#TRPBF | Same electrical specs; TSOT-23-6 package (1.6mm × 2.9mm) instead of DFN-6 (2mm × 3mm); higher θJA (192°C/W). | Better suited for space-constrained boards where DFN thermal pad routing is impractical. | Choose when PCB real estate is limited and thermal dissipation can be managed via copper area rather than exposed pad soldering. |
Compared with LTC6993IDCB-2#TRPBF, the LTC6993HDCB-2#TRPBF adds guaranteed operation up to 125°C and AEC-Q100 compliance; compared with LTC6993HS6-2#TRPBF, it offers superior thermal performance via DFN's exposed pad and larger footprint, enabling higher reliability in sustained high-temperature environments.
Availability
LTC6993HDCB-2#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial safety monitors, and battery-powered medical devices requiring stable component supply across extreme temperature ranges.
Supply support for LTC6993HDCB-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, Inc. 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 LTC6993HDCB-2#TRPBF-is designed for precision, resistor-programmable timing in space-, power-, and reliability-constrained systems where traditional RC or crystal-based solutions fall short.
FAQ
What is the maximum pulse width achievable with LTC6993HDCB-2#TRPBF?
The LTC6993HDCB-2#TRPBF supports a maximum pulse width of 33.6 seconds, achieved when NDIV = 2²¹ and RSET = 800kΩ. This is calculated using tOUT = NDIV × RSET / 50kΩ × 1µs. At these extremes, pulse width accuracy degrades to ±4.9% for NDIV = 1 but remains ±2.3% for NDIV ≥ 512, making long timeouts highly repeatable when configured with appropriate DIVCODE.
How does the retriggering behavior of LTC6993HDCB-2#TRPBF differ from LTC6993HDCB-1#TRPBF?
The LTC6993HDCB-2#TRPBF is rising-edge retriggerable: each new rising edge on TRIG extends the output pulse by a full tOUT duration from that trigger point. In contrast, LTC6993HDCB-1#TRPBF is non-retriggerable-subsequent triggers during an active pulse are ignored until the output completes and enters its rearm period (tARM = –4ns, meaning immediate readiness). This makes LTC6993HDCB-2#TRPBF ideal for pulse stretching, while LTC6993HDCB-1#TRPBF suits single-event timing.
Can LTC6993HDCB-2#TRPBF operate from a 2.25V supply, and what is its quiescent current at that voltage?
Yes, LTC6993HDCB-2#TRPBF is fully specified down to 2.25V. At V+ = 2.25V, RSET = 800kΩ, and NDIV ≥ 512, its typical supply current is 55µA in idle state and 65µA during active timing. This ultra-low current enables multi-year battery life in always-on sensor nodes and portable diagnostics equipment where LTC6993HDCB-2#TRPBF serves as a precision wake-up timer.
What is the role of the DIV pin on LTC6993HDCB-2#TRPBF, and how is it configured?
The DIV pin on LTC6993HDCB-2#TRPBF is a voltage-input node that programs both the frequency divider ratio (NDIV) and output polarity (POL bit) via an internal 4-bit A/D converter. It is configured using a resistor divider between V+ and GND, where VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%. For example, DIVCODE = 4 requires VDIV = 0.28125 × V+, achievable with R1 = 1MΩ and R2 = 392kΩ for 3.3V supply. The LTC6993HDCB-2#TRPBF datasheet Table 1 lists exact resistor pairs.
Is LTC6993HDCB-2#TRPBF pin-compatible with other members of the LTC6993 family?
Yes, all LTC6993 variants-including LTC6993HDCB-2#TRPBF-share identical pinouts across DFN-6 (DCB) and TSOT-23-6 (S6) packages. Pin 1 is TRIG, Pin 2 is GND, Pin 3 is SET, Pin 4 is DIV, Pin 5 is V+, and Pin 6 is OUT. This allows drop-in replacement between grades (H/I/C) and versions (–1/–2/–3/–4) without PCB changes, provided the temperature and retrigger requirements align with the selected variant.
LTC6993HDCB-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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x3)
LTC6993HDCB-2#TRPBF FAQ
1.How can I place an order for LTC6993HDCB-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993HDCB-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 LTC6993HDCB-2#TRPBF reliable?
The price and inventory of LTC6993HDCB-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 LTC6993HDCB-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993HDCB-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993HDCB-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993HDCB-2#TRPBF?
LTC6993HDCB-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993HDCB-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 LTC6993HDCB-2#TRPBF?
For technical support, including LTC6993HDCB-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993HDCB-2#TRPBF requirements.
6.How does Aetrix verify that LTC6993HDCB-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993HDCB-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 LTC6993HDCB-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993HDCB-2#TRPBF?
All LTC6993HDCB-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993HDCB-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 LTC6993HDCB-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993HDCB-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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