My Inquiry
My Account
Analog Devices Inc. LTC6993IS6-4#TRPBF
- Part No.:
- LTC6993IS6-4#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Multivibrators
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC6993IS6-4#TRPBF.pdf
- Description:
- IC MULTIVIBRATOR 11NS TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6993IS6-4#TRPBF from Analog Devices is a falling-edge-triggered, retriggerable monostable multivibrator (one-shot) in TSOT-23-6 package, delivering programmable pulse widths from 1µs to 33.55s 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 drives ±20mA CMOS output - used in missing-pulse detection, watchdog timers, and envelope detection in industrial sensor interfaces.
For engineers reviewing the LTC6993IS6-4#TRPBF datasheet, LTC6993IS6-4#TRPBF pinout, LTC6993IS6-4#TRPBF application, or LTC6993IS6-4#TRPBF equivalent, key selection criteria include confirmed falling-edge retrigger behavior, NDIV programmability (1–2,097,152), ±2.3% pulse width accuracy for >512µs pulses, –40°C to 85°C temperature grade, and SOT-23 footprint compatibility with layout-constrained portable systems.
Technical Context
The LTC6993IS6-4#TRPBF implements a master oscillator with 1µs base period, whose frequency is set by ISET current sourced from the SET pin (regulated at 1.00V ±30mV). Pulse width is calculated as tOUT = NDIV × RSET / 50kΩ × 1µs, where NDIV is selected via a 4-bit A/D conversion of VDIV on the DIV pin.
Its digital trigger logic responds exclusively to falling edges on TRIG (per LTC6993-4 specification), supports dynamic retriggering with minimum inter-trigger interval tRETRIG = 10ns (V+ = 3.3V, NDIV = 1), and features internal polarity control (POL bit) enabling positive or negative output pulses without external inversion circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pulse Width Range | 1µs to 33.55 seconds - enables single-component timing across microsecond watchdogs and multi-second system reset hold-offs. |
| Pulse Width Accuracy | ±2.3% (typ) for tOUT > 512µs - ensures reliable timing margin in safety-critical missing-pulse detection. |
| Supply Voltage | 2.25V to 5.5V - supports direct interface with 3.3V and 5V logic rails without level-shifting. |
| Quiescent Current | 55µA at 2.25V/800kΩ - extends battery life in portable equipment with infrequent trigger events. |
| Output Drive | ±20mA CMOS - directly drives LEDs, small relays, or logic inputs without external buffers. |
| Operating Temp | –40°C to +85°C - qualified for industrial automation and automotive cabin electronics. |
| Trigger Polarity | Falling-edge sensitive - matches legacy open-collector or active-low interrupt signals. |
Pinout & Package
Package: 6-Lead Plastic TSOT-23 (1mm height), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TRIG (Pin 1) | Falling-edge trigger input | Initiates output pulse on voltage transition from high to low; includes hysteresis for noise immunity. |
| GND (Pin 2) | Analog/digital ground reference | Low-inductance connection point for bypass capacitor (0.1µF) and return path for SET/OUT currents. |
| SET (Pin 3) | Pulse width programming node | Sinks 1.25µA–20µA to set master oscillator frequency; requires ≤10pF capacitance for jitter control. |
| DIV (Pin 4) | Divider ratio & polarity select | Voltage-coded 4-bit input (VDIV/V+ = (DIVCODE + 0.5)/16 ±1.5%) setting NDIV and output polarity. |
| V+ (Pin 5) | Positive supply rail | 2.25V–5.5V input; must be bypassed locally to GND to suppress switching noise coupling into timing circuitry. |
| OUT (Pin 6) | CMOS output driver | Full-rail swing (GND to V+), 30Ω typical output impedance, capable of sourcing/sinking 20mA. |
Key Features
| Feature | Design Value |
|---|---|
| Falling-edge retriggerable operation | Enables adaptive timeout extension in variable-interval communication protocols without firmware intervention. |
| Programmable NDIV up to 2,097,152 | Permits ultra-long pulse generation (up to 33.55s) using only passive resistors - eliminates need for external counters or microcontrollers. |
| 1V-regulated SET pin | Removes VSET drift impact on pulse width when using RSET, making timing accuracy dependent solely on resistor tolerance and device ∆tOUT spec. |
| ±20mA CMOS output | Drives standard logic loads, LEDs, or small MOSFET gates directly - reduces BOM count and PCB area in space-constrained designs. |
| –40°C to +85°C guaranteed performance | Validated across full industrial temperature range - no derating required for embedded control modules operating in uncontrolled environments. |
Applications
| Watchdog Timer | Missing Pulse Detection |
|---|---|
Use Scenario: Monitoring microcontroller activity in an industrial PLC where software hangs must trigger hardware reset within 100ms–5s. IC Role / Device Role / Timing Role: Monostable one-shot generating fixed-duration reset pulse upon periodic watchdog refresh signal. Use Value: Eliminates need for dedicated watchdog IC or MCU timer peripheral; falling-edge retriggering accommodates irregular refresh intervals. | Use Scenario: Detecting loss of encoder pulses in motor feedback loop to initiate safe shutdown before position error accumulates. IC Role / Device Role / Timing Role: Pulse-width comparator that asserts fault flag if inter-pulse interval exceeds programmed threshold. Use Value: Achieves sub-millisecond detection resolution (1µs min pulse) with analog-programmable threshold - no ADC or firmware polling required. |
| Envelope Detection | High-Vibration Sensor Interface |
Use Scenario: Extracting amplitude envelope from 80kHz ultrasonic carrier in proximity sensing module for object distance calculation. IC Role / Device Role / Timing Role: One-shot triggered by each carrier burst edge, with pulse width matched to expected envelope decay time. Use Value: Provides hardware-level envelope reconstruction with <1% timing error - avoids DSP latency and power overhead of digital demodulation. | Use Scenario: Conditioning signals from piezoelectric accelerometers in structural health monitoring systems exposed to shock and wide thermal swings. IC Role / Device Role / Timing Role: Timing element in self-test circuit that verifies sensor bias integrity after mechanical impact. Use Value: Guaranteed operation from –40°C to +85°C and low 55µA quiescent current enable long-term deployment in unpowered field nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar monostable timing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6993IS6-2#TRPBF | Rising-edge trigger, retriggerable; identical package, temp grade, and timing specs. | Requires active-high trigger source instead of active-low; unsuitable where legacy signal polarity is fixed. | Select when system generates clean rising-edge interrupts and board layout cannot accommodate level-shifting. |
| TLV3701IPW | Comparator-based one-shot with external RC timing; no integrated oscillator or NDIV divider. | Lower integration: requires external capacitor, precision resistor, and Schmitt trigger; pulse width limited to ~10ms max. | Choose for ultra-low-cost designs where timing accuracy >±5% is acceptable and board space allows discrete components. |
Compared with LTC6993IS6-2#TRPBF, the LTC6993IS6-4#TRPBF provides native falling-edge compatibility for open-drain bus monitoring; versus TLV3701IPW, it delivers 3-orders-of-magnitude wider pulse range and ±2.3% accuracy without capacitor aging or temperature drift penalties.
Availability
LTC6993IS6-4#TRPBF is available at Aetrix Electronics and suitable for industrial automation, automotive cabin electronics, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6993IS6-4#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 LTC6993IS6-4#TRPBF - was designed to replace discrete 555-based timing circuits with silicon-accurate, low-power, programmable alternatives for embedded timing functions.
FAQ
What is the trigger behavior of the LTC6993IS6-4#TRPBF?
The LTC6993IS6-4#TRPBF is a falling-edge-triggered, retriggerable monostable multivibrator. A falling transition on the TRIG pin initiates the output pulse, and subsequent falling edges during an active output extend the pulse width. This behavior is defined in the LTC6993-4 variant specification and is verified across the –40°C to +85°C operating range for the LTC6993IS6-4#TRPBF.
How do I program a 10ms pulse width on the LTC6993IS6-4#TRPBF?
To achieve a 10ms pulse width with the LTC6993IS6-4#TRPBF, select NDIV = 512 (DIVCODE = 3, VDIV/V+ ≈ 0.219) and calculate RSET = (tOUT × 50kΩ) / (NDIV × 1µs) = (10ms × 50kΩ) / (512 × 1µs) ≈ 977kΩ. Use a 0.5% metal-film resistor from SET to GND, and verify VSET remains at 1.00V ±30mV per datasheet Figure 18.
Does the LTC6993IS6-4#TRPBF support negative output polarity?
Yes, the LTC6993IS6-4#TRPBF supports negative output polarity via the POL bit in DIVCODE. When DIVCODE ≥ 8 (e.g., DIVCODE = 8–15), the OUT pin produces a negative-going pulse (low-active) instead of the default positive pulse. This is implemented internally - no external inverter is needed - and is fully specified in Table 1 of the LTC6993 datasheet Rev. F.
What is the minimum supply voltage for reliable operation of the LTC6993IS6-4#TRPBF?
The LTC6993IS6-4#TRPBF operates reliably down to 2.25V over its full –40°C to +85°C temperature range, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. At 2.25V, it maintains ±2.3% pulse width accuracy for tOUT > 512µs and delivers 8mA sink/source capability at VOL/VOH limits, meeting industrial-grade robustness requirements.
Can the LTC6993IS6-4#TRPBF be used in automotive applications?
The LTC6993IS6-4#TRPBF is not AEC-Q100 qualified. While it shares the same silicon die as AEC-Q100-qualified variants (e.g., LTC6993HS6-4#WTRPBF), the IS6-4#TRPBF grade is specified only for industrial temperature range (–40°C to +85°C) and lacks automotive-specific reliability testing and traceability. For automotive use, select the W-suffix automotive-grade version explicitly listed in the Order Information table.
LTC6993IS6-4#TRPBF 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC6993IS6-4#TRPBF FAQ
1.How can I place an order for LTC6993IS6-4#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6993IS6-4#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 LTC6993IS6-4#TRPBF reliable?
The price and inventory of LTC6993IS6-4#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6993IS6-4#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6993IS6-4#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6993IS6-4#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6993IS6-4#TRPBF?
LTC6993IS6-4#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6993IS6-4#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 LTC6993IS6-4#TRPBF?
For technical support, including LTC6993IS6-4#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6993IS6-4#TRPBF requirements.
6.How does Aetrix verify that LTC6993IS6-4#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6993IS6-4#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 LTC6993IS6-4#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6993IS6-4#TRPBF?
All LTC6993IS6-4#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6993IS6-4#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 LTC6993IS6-4#TRPBF part is unused and in its original packaging.
Return procedure for LTC6993IS6-4#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6993IS6-4#TRPBF Tags
-
SN74LVC1G123DCUR
Texas Instruments
-
CD4047BM96
Texas Instruments
-
SN74LVC1G123DCTR
Texas Instruments
-
CD74HC221M96
Texas Instruments
-
CD14538BE
Texas Instruments
-
SN74LVC1G123YZPR
Texas Instruments
-
SN74LVC1G123DCUT
Texas Instruments
-
MC14538BDR2G
onsemi
-
74VHC123AMX
onsemi
-
LTC6993CS6-2#TRMPBF
Analog Devices Inc.
-
LTC6993CS6-3#TRMPBF
Analog Devices Inc.
-
LTC6993CS6-1#TRMPBF
Analog Devices Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
