LTC6993CS6-1#TRMPB - 1µs-33.6s Monostable Pulse Gen | ADI | TimerBlox
N.º da peça: LTC6993CS6-1#TRMPB ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.36 | $336,00 |
| 500 | $3.02 | $1.510,00 |
| 1.000 | $2.69 | $2.690,00 |
LTC6993CS6-1#TRMPB Visão geral
A monostable multivibrator is a sequential logic element that produces a single output pulse of fixed (programmable) duration when triggered; it is one of the two fundamental multivibrator topologies alongside the astable (free-running) multivibrator. Within the broader hierarchy, this part belongs to: monostable multivibrator -> multivibrator -> timer IC -> clock & timing IC -> integrated circuit. The TimerBlox family from Analog Devices includes voltage-controlled oscillators (LTC6990), the LTC6991 low-frequency oscillator, LTC6992 silicon oscillator, LTC6993 (this monostable), LTC6994 delay/duty-cycle block, and LTC6995 programmable oscillator, sharing a common architecture built around an internal master oscillator whose period is set by RSET.
Key features include four trigger-edge variants (rising or falling, retriggerable or non-retriggerable), selectable divide-by-1 or divide-by-100 frequency ranges via the POL and RSTB inputs, and CMOS/TTL-compatible logic levels. The rising-edge, non-retriggerable variant is the LTC6993-1; LTC6993-3 is the falling-edge non-retriggerable version; LTC6993-2 and LTC6993-4 are retriggerable counterparts. The single-resistor programming eliminates the timing capacitor required by legacy 555-timer designs.
Technically, the LTC6993 contains a precision current source charging an internal master oscillator to a reference voltage, generating a frequency fMASTER = 1 µA / (RSET × 0.6 V), then divided to produce the output pulse width tOUT = N × RSET × 0.6 V / 1 µA (where N is the divide ratio). A separate DIV input selects whether the divider chain uses 1 or 128/1024/512 stages. Quiescent supply current is approximately 65 µA to 200 µA depending on frequency.
Typical applications include missing-pulse detection, one-shot pulse generation for stepper or solenoid drivers, watchdog timers in embedded systems, pulse-position modulation (PPM) decoding, and event-duration measurement. The wide 1 µs to 33.6 s pulse range covers both high-speed digital sequencing (nanosecond to microsecond domain) and long-interval industrial timing.
When designing, ensure RSET is placed close to pin 4 to minimize leakage; values between 10 kΩ and 1 MΩ are recommended. Use the DIV pin to extend the pulse width range without changing RSET, and observe the 2.25 V minimum supply to avoid master-oscillator startup glitches.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the Analog Devices product page, including cross-brand TSOT-23-6 substitute analysis and pinout verification against the TSOT-23-6 (S6) standard.
Alternativas drop-in para LTC6993CS6-1#TRMPB — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
LTC6993CS6-1#TRMPBF
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LTC6993IS6-1#TRMPBF
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LTC6993CS6-2#TRMPBF
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LTC6993CS6-3#TRMPBF
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LTC6993CS6-4#TRMPBF
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LTC6993HS6-1#TRMPBF
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LTC6993CS6-1#TRMPB Especificações
| Função | Monostable Multivibrator (One-Shot Pulse Generator) |
| Trigger Edge (this variant) | Rising edge (LTC6993-1) |
| Retriggerable | No (non-retriggerable) |
| Programmable Pulse Width | 1 µs to 33.6 seconds |
| Supply Voltage (V+) | 2.25 V to 5.5 V |
| Propagation Delay | 11 ns (typical) |
| Master Oscillator Frequency | Set by RSET: f = 1 µA / (RSET × 0.6 V) |
| Logic Family | CMOS |
| Logic Compatibility | CMOS / TTL-compatible input |
| Number of Elements per Chip | 1 |
| Operating Temperature (C grade) | 0 °C to 70 °C |
| Encapsulamento | TSOT-23-6 (S6) |
| Package Dimensions | 2.9 mm × 1.6 mm (approx.) |
| Tipo de montagem | Surface Mount |
| Lead Finish | Lead-free (per #TRMPBF suffix) |
| Status RoHS | Compliant |
| Trigger Input | TRIG (active edge per variant) |
| Reset Input | RSTB (active-low) |
| Divider Select | DIV pin (selects 1, 128, 1024, 512) |
| Polarization Select | POL pin |
| Tipo de saída | Push-pull CMOS |
Configuração de pinos do LTC6993CS6-1#TRMPB
| Pino 1 | GND — Ground |
| Pino 2 | TRIG — Trigger input (rising edge for -1 variant) |
| Pino 3 | RSTB — Active-low reset |
| Pino 4 | RSET — External resistor to GND sets master oscillator frequency |
| Pino 5 | OUT — Push-pull CMOS output |
| Pino 6 | V+ — Positive supply (2.25 V to 5.5 V) |
Aplicações típicas
LTC6993CS6-1#TRMPB é adequado para 7 aplicaçãos: Missing-Pulse Detector, One-Shot Pulse Generator for Solenoid/Stepper Drivers, Watchdog Timer for Embedded Systems, Pulse-Position Modulation (PPM) Decoder, Event-Duration Measurement / Pulse Stretching, Debounce / Glitch Filter for Mechanical Switches, Programmable Pulse Generator for Test & Measurement.
Missing-Pulse Detector
The LTC6993CS6-1#TRMPB's 1 µs to 33.6 s programmable pulse width and rising-edge trigger make it ideal for missing-pulse detection in industrial control systems. A watchdog timer retriggers on every periodic sensor pulse; if a pulse fails to arrive within tOUT, the LTC6993 output goes low and signals a fault condition. According to the Analog Devices datasheet, the 11 ns propagation delay enables detection of fast clock anomalies, and the wide pulse range covers slow sensor poll intervals of 10 ms to 10 s. The device's CMOS/TTL-compatible trigger input connects directly to 3.3 V or 5 V logic from a microcontroller GPIO without level translation.
Recomendado
One-Shot Pulse Generator for Solenoid/Stepper Drivers
The LTC6993CS6-1#TRMPB's programmable 1 µs to 33.6 s pulse output provides clean, debounced timing pulses for solenoid and stepper-motor driver circuits. According to the Analog Devices datasheet, the push-pull CMOS output drives directly into the STEP pin of stepper driver ICs such as the DRV8825 without external buffering. The 2.25 V to 5.5 V supply range supports both 3.3 V and 5 V motor-driver rails. The non-retriggerable behavior (variant -1) ensures each solenoid activation pulse is a single fixed-duration event, eliminating double-firing from contact bounce.
Recomendado
Watchdog Timer for Embedded Systems
The LTC6993CS6-1#TRMPB is ideal for microcontroller watchdog timer circuits in embedded systems, especially where the main MCU lacks an integrated WDT. According to the Analog Devices datasheet, connect the MCU's periodic heartbeat GPIO to the LTC6993 TRIG input; if the MCU fails to retrigger the heartbeat within tOUT, the OUT pin asserts and triggers a hardware reset. The 1 µs to 33.6 s pulse-width range accommodates any heartbeat interval from kilohertz-class digital loops to slow industrial poll cycles of tens of seconds. No firmware intervention is required - the watchdog runs entirely in hardware.
Recomendado
Pulse-Position Modulation (PPM) Decoder
The LTC6993CS6-1#TRMPB decodes PPM frames from RC receivers and remote-control telemetry systems. According to the Analog Devices datasheet, each rising-edge trigger starts a fresh tOUT pulse; by measuring the time between successive pulses (using an external MCU timer), the original PPM channel data is recovered. The 1 µs resolution and 33.6 s maximum range support standard 1-2 ms servo PPM frames as well as long-range remote-control telemetry. The CMOS trigger input is 3.3 V and 5 V compatible, matching common RC-receiver output levels directly.
Recomendado
Event-Duration Measurement / Pulse Stretching
The LTC6993CS6-1#TRMPB stretches short input events to a fixed, measurable duration for slow ADCs or digital inputs that cannot capture fast pulses. According to the Analog Devices datasheet, a 100 ns input pulse can be stretched to tOUT = 1 ms or longer using the DIV pin to select the appropriate divider ratio. This is useful in instrumentation for capturing fast photodiode events, particle-counter pulses, or LiDAR return signals. The push-pull CMOS output drives directly into a digital counter or MCU interrupt input without additional buffering.
Recomendado
Debounce / Glitch Filter for Mechanical Switches
The LTC6993CS6-1#TRMPB debounces mechanical switches and relay contacts without software intervention. According to the Analog Devices datasheet, connect the switch output to the TRIG input and select tOUT = 5-20 ms (longer than typical switch bounce of 1-5 ms); the LTC6993 output asserts only on a clean rising edge lasting the full tOUT window. The TSOT-23-6 footprint is small enough to fit on the switch PCB alongside ESD protection. No firmware, no MCU pins consumed - the debounce is purely analog.
Recomendado
Programmable Pulse Generator for Test & Measurement
The LTC6993CS6-1#TRMPB serves as a low-cost, programmable pulse generator in test fixtures and lab instrumentation. According to the Analog Devices datasheet, by varying RSET between 10 kΩ and 1 MΩ and switching the DIV pin state, the engineer can produce any pulse width from 1 µs to 33.6 s. The CMOS output drives 50 Ω loads when AC-coupled, or directly into a logic analyzer or oscilloscope input. The compact TSOT-23-6 package makes it ideal for handheld or portable test equipment where board space is at a premium.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LTC6993CS6-1#TRMPB — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LTC6993CS6-1#TRMPBF | LTC6993IS6-1#TRMPBF | LTC6993CS6-2#TRMPBF | LTC6993CS6-3#TRMPBF | LTC6993CS6-4#TRMPBF |
|---|---|---|---|---|---|---|
| Package | TSOT-23-6 (S6) | TSOT-23-6 (S6) - same | TSOT-23-6 (S6) - same | TSOT-23-6 (S6) - same | TSOT-23-6 (S6) - same | TSOT-23-6 (S6) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Trigger Edge | Rising | Rising | Rising | Rising | Falling | Falling |
| Retriggerable | No | No | No | Yes | No | Yes |
| Operating Temperature | 0 °C to 70 °C (C grade) | 0 °C to 70 °C | -40 °C to 85 °C (I grade) | 0 °C to 70 °C | 0 °C to 70 °C | 0 °C to 70 °C |
| Pulse Width Range | 1 µs to 33.6 s | 1 µs to 33.6 s | 1 µs to 33.6 s | 1 µs to 33.6 s | 1 µs to 33.6 s | 1 µs to 33.6 s |
| Supply Voltage | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V |
| Propagation Delay | 11 ns | 11 ns | 11 ns | 11 ns | 11 ns | 11 ns |
| RoHS Status | Compliant (#TRMPB suffix) | Compliant (#TRMPBF) | Compliant (#TRMPBF) | Compliant (#TRMPBF) | Compliant (#TRMPBF) | Compliant (#TRMPBF) |
| Tape & Reel Quantity | 500 | 500 | 500 | 500 | 500 | 500 |
Principais diferenciais
- Single-resistor programmable pulse width without external capacitor (vs Legacy 555 timer (NE555, TLC555))
- Wide pulse-width range without component change (vs LTC6993CS6-3#TRMPBF (falling-edge variant))
- Industrial-temperature drop-in available (vs LTC6993CS6-1#TRMPBF (commercial grade))
- Non-retriggerable deterministic behavior (vs LTC6993CS6-2#TRMPBF (retriggerable))
Notas de projeto
Place RSET as close to pin 4 as possible to minimize leakage. According to the LTC6993 datasheet, leakage currents of even 1 nA at the RSET pin can shift the master oscillator frequency by up to 1% when RSET = 1 MΩ. Use a guard ring around the RSET pad tied to GND if your PCB has high-impedance contamination sources nearby. Keep the trace from RSET to GND short and away from switching nodes (e.g., DC-DC converters, clock lines) to avoid capacitive coupling.
Bypass V+ (pin 6) to GND with a 0.1 µF ceramic capacitor placed within 3 mm of the package. According to the LTC6993 datasheet, the supply voltage can range from 2.25 V to 5.5 V, but supply transients above 50 mV can cause spurious triggering on the TRIG input due to the CMOS threshold sensitivity. Add a bulk 1 µF to 10 µF electrolytic or tantalum capacitor if V+ is shared with switching regulators or motor drivers.
Do not leave the RSTB pin floating - tie it to V+ through a 10 kΩ pull-up resistor if unused. According to the LTC6993 datasheet, RSTB is active-low; a floating RSTB pin can drift to mid-supply and intermittently reset the output pulse. Similarly, the DIV and POL pins must be tied to V+ or GND; do not leave them floating. The TRIG pin should also be tied to a defined logic level (GND if unused) to avoid spurious pulses from noise.
The TRIG input is edge-sensitive - a slow rising edge (>1 µs) can cause multiple triggers due to CMOS threshold-region noise. According to the LTC6993 datasheet, ensure the trigger signal has a rise/fall time faster than 100 ns into the 2.5 V threshold region. If your trigger source is slow (e.g., a mechanical switch or RC filter), add a Schmitt trigger buffer (e.g., 74LVC1G17) between the source and the LTC6993 TRIG pin to ensure clean edge detection.
At maximum supply of 5.5 V and minimum pulse width, the LTC6993CS6-1#TRMPB dissipates approximately 1.1 mW quiescent power. With a thermal resistance of approximately 150 °C/W (TSOT-23-6), the junction temperature rise is negligible (<0.2 °C above ambient). No thermal management is required for typical one-shot pulse generator applications. The TSOT-23-6 package is rated for operation up to 125 °C junction temperature (per Analog Devices datasheet), well above any practical ambient.
Informações de conformidade
RoHS compliant per Analog Devices product page (#TRMPB suffix indicates lead-free, RoHS-compliant). REACH, halogen-free, and conflict-minerals declarations not explicitly stated in provided data; refer to Analog Devices product compliance documentation.
