LTC6993HS6-4 - Mono Pulse Gen One-Shot 1µs-33.6s | ADI
料号： LTC6993HS6-4 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.18 | $4.18 |
| 10 | $3.85 | $38.50 |
| 100 | $3.42 | $342.00 |
| 500 | $2.98 | $1,490.00 |
| 1,000 | $2.65 | $2,650.00 |
LTC6993HS6-4 概述
A monostable multivibrator (also known as a one-shot pulse generator) is a sequential logic element that produces a single output pulse of fixed duration in response to a trigger edge, then returns to its stable state until the next trigger. One-shots sit within the broader category of timer ICs and are widely used for pulse stretching, edge-to-level conversion, missing-pulse detection, and digital debouncing. Because timing accuracy is achieved via a single external resistor (RSET) and the part is fully self-contained, one-shots are easier to design with than discrete RC or 555-based equivalents.
Key features of the LTC6993HS6-4 include a wide programmable pulse-width range (1µs to 33.6s) set by RSET, a low 11 ns propagation delay, 2.25 V to 5.5 V single-supply operation, and CMOS-compatible logic inputs/outputs. The device also includes an internal master oscillator derived from RSET, allowing the output pulse duration to be calculated via tOUT = N_DIV × RSET / 50 kΩ × (typical 1.0), enabling precise digital control of pulse width without external capacitors.
The architecture uses a precision current reference feeding an internal master oscillator whose frequency is set by RSET; the resulting clock is divided by a fixed N factor to produce the output pulse. An on-chip comparator triggers on the rising edge of the input, with retrigger capability and an optional reset pin on related family members. This analog-digital hybrid approach yields excellent supply-rejection and temperature stability compared to simple 555 timer designs.
Typical applications include industrial control pulse generation, automotive system timing, watchdog/missing-pulse detectors, debouncing mechanical switches, frequency discriminator circuits, and low-frequency clock generation in test equipment. The wide 1µs to 33.6s range covers most pulse-stretching needs from high-speed digital logic to multi-second industrial timing. The AEC-Q100 grade (H temp range) makes it suitable for automotive applications.
When designing with the LTC6993HS6-4, select RSET between 10 kΩ and 1 MΩ using a low-drift, low-leakage resistor for accuracy, and place it close to the RSET pin to minimize noise pickup. Verify input pulse width is shorter than the programmed output pulse to ensure proper retrigger behavior.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone.
直接替换替代料： LTC6993HS6-4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LTC6993HS6-4 （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Package, Propagation Delay, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
LTC6993IS6-4#TRMPBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC6993HS6-4#WTRMPBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC6993CS6-4#TRMPBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC6993MPS6-4#TRMPBF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.88 / 个
查看数据手册 →LTC6993HS6-4 最大额定值与电气特性
| 功能 | Monostable Multivibrator (One-Shot Pulse Generator) |
| Programmable Pulse Width Range | 1 µs to 33.6 s |
| Propagation Delay | 11 ns (typical) |
| Supply Voltage Range | 2.25 V to 5.5 V |
| Timing Resistor (RSET) Range | 10 kΩ to 1 MΩ |
| Logic Input Compatibility | CMOS-compatible |
| 输出类型 | Single-ended CMOS push-pull |
| 工作温度范围 | -40°C to +125°C (H grade, automotive) |
| Temperature Grade | Automotive (AEC-Q100) |
| 封装 | TSOT-23-6 (6-pin) |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (unlimited floor life) |
| RoHS 状态 | Compliant (#PBF suffix) |
| Series / Family | TimerBlox LTC6993-4 |
LTC6993HS6-4 引脚配置
| 引脚 1 | GND — Ground reference |
| 引脚 2 | TRIG — Trigger input (rising edge initiates pulse) |
| 引脚 3 | VDD — Positive supply (2.25 V to 5.5 V) |
| 引脚 4 | OUT — CMOS pulse output |
| 引脚 5 | RST/RDIV — Reset / divider control (see datasheet) |
| 引脚 6 | RSET — External timing resistor to GND (10 kΩ to 1 MΩ) |
典型应用
LTC6993HS6-4 适用于 6 应用s: Missing-Pulse Detector, Switch Debouncer, Automotive Pulse Generator, Industrial Control Pulse Stretcher, Frequency-to-Pulse Converter, Edge-to-Level Converter for FPGA/ASIC.
Missing-Pulse Detector
The LTC6993HS6-4 fits missing-pulse detection in industrial control and automotive sensor monitoring because its 1µs to 33.6s programmable pulse width can be tuned to exceed the maximum expected inter-pulse period. When retriggered by a periodic input, the output stays HIGH; if the input pulses stop, the one-shot times out and the output goes LOW, signaling a fault. The 11 ns propagation delay ensures faults are detected within nanoseconds of the missed edge. The H temperature grade and AEC-Q100 qualification make it suitable for engine control and ABS sensor monitoring. Place RSET between 100 kΩ and 1 MΩ for sub-second windows typical of encoder signals. Companion logic: a window comparator to qualify the output, or a micro-controller GPIO to latch the fault. According to the Analog Devices TimerBlox datasheet, this topology is documented in the missing-pulse detection application section.
推荐
Switch Debouncer
The LTC6993HS6-4 is well-suited to mechanical switch and relay debouncing because it converts a noisy multi-edge contact closure into a single clean output pulse of user-defined duration. Wire the switch between TRIG and GND via a pull-up, and program the output pulse to 10-50 ms - long enough to mask bounce, short enough to feel responsive. The wide 2.25 V to 5.5 V supply range allows direct connection to 3.3 V or 5 V microcontroller GPIO without level shifting. The CMOS output can directly drive a logic input, opto-isolator, or interrupt pin. The TSOT-23-6 package fits behind the panel-mount switch on dense PCBs. Use a 1% metal-film RSET for stable timing across temperature.
推荐
Automotive Pulse Generator
The LTC6993HS6-4 in the AEC-Q100 qualified #WTRMPBF variant is ideal for automotive pulse generation in body control modules, ECU wake-up circuits, and lighting controllers. Its -40°C to +125°C operating range covers under-hood and cabin environments, while the 5.5 V absolute maximum survives load-dump transients when paired with proper TVS protection. The 1µs to 33.6s range covers everything from injector pre-drive pulses (sub-millisecond) to lighting fade timers (multi-second). Its small TSOT-23-6 footprint simplifies PCB layout in space-constrained modules. According to Analog Devices, the TimerBlox family's CMOS outputs are robust against automotive electrical environments when properly bypassed.
推荐
Industrial Control Pulse Stretcher
The LTC6993HS6-4 serves industrial pulse stretching for PLC inputs, encoder signal conditioning, and watchdog timer circuits because its precise digital timing eliminates the calibration drift of discrete RC one-shots. A short input pulse (e.g. from a proximity sensor) can be stretched to a guaranteed minimum width (e.g. 100 µs) that the downstream PLC input reliably samples. The 11 ns propagation delay preserves edge-to-edge alignment in high-speed assembly lines. Wide supply tolerance makes it robust against 24 V industrial bus transients when powered from a regulated 5 V rail. The H temperature grade suits factory-floor enclosures.
推荐
Frequency-to-Pulse Converter
The LTC6993HS6-4 can implement a frequency discriminator or frequency-to-pulse converter by operating it as a retriggerable one-shot. Each input pulse retriggers the timer; if the input frequency stays above the threshold set by RSET, the output remains continuously HIGH, providing a clean frequency-good flag. If the input frequency falls below threshold, the output falls LOW. This technique is widely used in tachometers, motor-speed interlocks, and clock-quality monitors. The 1 µs minimum pulse width supports input frequencies up to several hundred kHz when RSET is sized appropriately. The TSOT-23-6 package eases integration into motor-control boards.
推荐
Edge-to-Level Converter for FPGA/ASIC
The LTC6993HS6-4 converts short digital events (e.g. interrupts, comparator trips, one-cycle pulses) into level signals that slow microcontrollers or ASICs can sample reliably. Program the output pulse width to match the host's polling or interrupt latency, ensuring the event is never missed. With 11 ns propagation delay, the LTC6993HS6-4 adds minimal timing skew between input edge and output, preserving causality in high-speed digital systems. It interfaces directly to 2.5 V, 3.3 V, and 5 V logic thanks to its wide 2.25 V to 5.5 V supply range. The TSOT-23-6 package is ideal for placement near FPGA I/O banks on dense boards.
推荐
推荐产品汇总
工程参考数据： LTC6993HS6-4 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LTC6993IS6-4#TRMPBF | LTC6993HS6-4#WTRMPBF | LTC6993CS6-4#TRMPBF | LTC6993MPS6-4#TRMPBF |
|---|---|---|---|---|---|
| Package | TSOT-23-6 | TSOT-23-6 (same) | TSOT-23-6 (same) | TSOT-23-6 (same) | TSOT-23-6 (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Function | Monostable multivibrator | Monostable multivibrator | Monostable multivibrator | Monostable multivibrator | Monostable multivibrator |
| 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 |
| Supply Voltage Range | 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 |
| Operating Temperature | -40°C to +125°C | -40°C to +85°C | -40°C to +125°C | 0°C to +70°C | -55°C to +125°C |
| Automotive Grade | AEC-Q100 (H grade) | No (industrial) | Yes (AEC-Q100 #WTRMPBF) | No (commercial) | No (military) |
| Propagation Delay | 11 ns | 11 ns | 11 ns | 11 ns | 11 ns |
关键差异点
- Wide 1µs to 33.6s pulse width range set by a single resistor （对比 LTC6994HS6-2#TRPBF)
- 11 ns propagation delay enables high-speed pulse stretching （对比 Discrete 555 timer)
- AEC-Q100 qualified for automotive designs （对比 Industrial-only LTC6993IS6-4#TRMPBF)
设计说明
Place RSET as close as possible to Pin 6 of the LTC6993HS6-4 with a ground return trace that does not share impedance with switching loads. Use a low-leakage, 1% metal-film resistor (10 kΩ to 1 MΩ) to maintain timing accuracy; carbon-film resistors add 5-10% timing error and temperature drift. Keep the TRIG trace short and away from noisy switching nodes to prevent false triggering from capacitive coupling.
Decouple VDD (Pin 3) with a 0.1 µF ceramic capacitor placed within 2 mm of the pin, and add a 1 µF bulk capacitor on the supply rail. The LTC6993HS6-4 supply range is 2.25 V to 5.5 V; operation above 5.5 V absolute maximum will damage the part. For 12 V or 24 V industrial buses, step down to 5 V or 3.3 V with an LDO before reaching the TimerBlox. Estimated IDD is in the low-mA range; see datasheet for precise figures.
Never leave the RSET pin floating - this causes undefined master oscillator frequency and erratic output pulses. Ensure input trigger pulse width is shorter than the programmed output width for proper retrigger behavior; wider trigger pulses can block subsequent triggers. Do not use RSET values outside 10 kΩ to 1 MΩ as the master oscillator becomes inaccurate. For long pulse widths (>10 s), check that the timing capacitor-equivalent leakage paths on your PCB (RSET to GND) are below the master oscillator's bias current.
合规信息
RoHS and lead-free confirmed via #PBF suffix and Analog Devices product page. AEC-Q100 qualified for the H temperature grade (-40C to +125C); order the #WTRMPBF reel variant for full automotive documentation. Halogen-free status not explicitly stated in provided snippets.
