LM555-MWC - 100kHz Timer/Oscillator Die | Texas Instruments
MPN: LM555-MWC ✓ فعالLM555-MWC نمای کلی
A 555 timer is a multivibrator and timing integrated circuit within the broader clock-and-timing IC hierarchy. In astable mode, its output switches continuously at a repetition rate determined by two external resistors and one capacitor. In monostable mode, it produces one timed output pulse after a trigger event. In bistable mode, a trigger can set or reset the output. The LM555 family is widely used to generate delays, produce pulses, provide simple oscillators, and trigger larger loads through an external switch.
The LM555-MWC identifies the 100kHz-capable timer function and the die-based delivery option. External timing components determine the practical operating frequency in astable mode, while the circuit's internal reference and threshold arrangement govern pulse width and duty cycle. The available device information identifies a maximum supply current of 15mA and an industrial temperature range of -40°C to +85°C. The die's physical dimensions, pad geometry, and exposed surface details are not established by the product listing.
Because this is a die rather than a finished molded package, its electrical function follows the Texas Instruments LM555 architecture, but its mechanical implementation must be defined by the integrator. Supply voltage limits, threshold reference accuracy, output-current capability, trigger and reset levels, and absolute maximum ratings should be confirmed from the LM555 datasheet before qualifying the die for a production design. The Rev. D datasheet also documents monostable operation as a common configuration for controlling an LED for a specified duration.
Typical uses for the underlying LM555 timer function include LED and lamp drivers, pulse generators, missing-pulse detection, delayed-action circuits, simple audio oscillators, and industrial control or test modules. When implementing the die in a final package, attention must be paid to bonding parasitics, thermal paths, contamination control, and the final package's pin mapping. The timer frequency should also remain below the 100kHz device limit after accounting for component tolerances and parasitic capacitance.
A key design consideration is that the die suffix does not describe a standardized PCB footprint. Engineers should create a bonding pad layout from the approved die documentation and electrically qualify the assembled part before production. If a packaged, directly orderable timer is required for prototyping or repair, use a finished 555 timer with the same functional architecture and verify its electrical limits against the design.
This page organizes the LM555-MWC function, operating limits, application guidance, design cautions, and package-availability context into an engineering-oriented reference. It also distinguishes the verified die offering from finished-package alternatives so procurement and assembly teams can identify when a die-level supply strategy is appropriate.
جایگزین‌های drop-in برای LM555-MWC — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
هیچ جایگزین مستقیمی برای این محصول موجود نیست.
درخواست جایگزینLM555-MWC مشخصات
| Product Type | 555 Type Timer/Oscillator (Single) IC |
| Maximum Timing Frequency | 100kHz |
| Timer Configuration | Monostable, astable, and bistable |
| Maximum Supply Current | 15mA |
| محدوده دمای کاری | -40°C to +85°C |
| Temperature Grade | Industrial |
| Package Code | Die |
| Package Shape | Rectangular |
| Surface Mount | Yes |
راهنمای پیکربندی پین LM555-MWC rectangular
پیکربندی پین برای LM555-MWC (پکیج rectangular). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای LM555-MWC.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
LM555-MWC مناسب است برای 6 کاربردs: LED Duration Control, Pulse Generator, Missing-Pulse Detection, Simple Audio Oscillator, Delayed-Action Control, Industrial Timing Module.
LED Duration Control
The LM555-MWC timer function is well suited to monostable LED-duration circuits because a trigger can initiate one controlled output interval instead of producing a continuous waveform. In a typical implementation, the timing resistor and capacitor establish the pulse duration, while an output transistor drives the LED and limits current in the indicator path. The 100kHz timing capability provides ample margin for LED durations measured in seconds or milliseconds. During die integration, confirm trigger polarity, output behavior, and reset timing against the Rev. D LM555 datasheet, then qualify the bonded assembly for repetitive switching and thermal performance.
پیشنهادی
Pulse Generator
The LM555-MWC can generate repeatable trigger pulses in an astable configuration, making it useful for test fixtures, relay-control modules, and small industrial control boards. Two timing resistors and one timing capacitor determine the repetition rate, while the discharge transistor supports the capacitor-discharge path required by the timer architecture. Although the device is identified for 100kHz timing, most pulse-generation designs operate far below that limit to preserve timing margin and clean edges. The integrator should verify output rise time, reset behavior, and variation caused by the timing capacitor before releasing the assembled die for production.
پیشنهادی
Missing-Pulse Detection
A 555 timer configured in monostable mode can detect the absence of an expected periodic pulse by using repeated triggers to hold or inhibit a timing interval. The LM555-MWC is appropriate for this class of industrial monitoring when its industrial temperature range and supply-current limits satisfy the circuit requirements. A reference oscillator defines the expected trigger cadence, while the timer asserts a fault indication when the pulse train stops. The final design should account for trigger noise, reset recovery, timing tolerance, and the minimum spacing between valid pulses. These behaviors should be verified on the final die-package assembly rather than only in a generic simulator.
پیشنهادی
Simple Audio Oscillator
The LM555-MWC astable function can generate an audible or sub-audible tone when its discharge path drives a resistive-capacitive network and an output stage. The device's maximum timing frequency of 100kHz is far above normal audio-frequency requirements, allowing timing components to focus on frequency stability and tone quality rather than operating near the device limit. The output stage must provide the required current and impedance because the timer's primary purpose is timing rather than audio amplification. For die integration, evaluate component tolerances, substrate noise, bonding parasitics, and output distortion in the final assembly to ensure consistent audible performance.
پیشنهادی
Delayed-Action Control
Monostable operation makes the LM555-MWC suitable for delayed-action control circuits in which an event must be held or released after a defined interval. A trigger initializes the timing cycle, and the internal flip-flop keeps the output in a defined state until the timing threshold is reached. Such circuits are used in relay sequencing, debounce timing, actuator delay, and single-shot control modules. The design must include suitable logic-level interfacing so the trigger and reset signals do not exceed the device's specified limits. Since LM555-MWC is a die, the integrator should also confirm that bonding inductance and external-component placement do not materially alter the intended delay.
پیشنهادی
Industrial Timing Module
The LM555-MWC's stated -40°C to +85°C industrial temperature range supports timer modules used in factory equipment, process controls, and maintenance instruments. A useful implementation can combine the timer with dividers, switching, or logic to create delayed events and supervisory functions. Because the component is supplied as a die, the module designer becomes responsible for mechanical stability, contamination control, thermal transfer, and the relationship between bonding pads and the final enclosure. Validate the complete assembly over temperature, confirm timing tolerance with the selected capacitor and resistor grades, and verify that the external power architecture respects the 15mA maximum supply-current specification.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای LM555-MWC — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول |
|---|---|
| Brand | Texas Instruments |
| Package | Die |
| Product Type | 555 Type Timer/Oscillator (Single) IC |
| Maximum Timing Frequency | 100kHz |
| Maximum Supply Current | 15mA |
| Operating Temperature Range | -40°C to +85°C |
| Temperature Grade | Industrial |
| Operating Modes | Monostable, astable, and bistable |
| Surface Mount | Yes |
| Price Tier | Request a Quote |
تفاوت‌های کلیدی
- Die-level supply format (در مقابلFinished-package 555 timers)
- 100kHz timer capability (در مقابلLower-frequency 555 timer variants)
- Industrial temperature grade (در مقابلConsumer-temperature 555 timers)
یادداشت‌های طراحی
Do not assign a conventional eight-pin PCB footprint to LM555-MWC. The product is a die, so the assembly substrate must use an approved pad layout matched to the die geometry and bonding sequence. Preserve the documented orientation and clean the bonding surfaces before assembly. Keep the timer function's supply, trigger, output, reset, control-voltage, threshold, discharge, and ground connections consistent with the LM555 Rev. D terminal descriptions.
Avoid treating the 100kHz figure as an unconditional operating target. Component tolerances, propagation delay, output rise time, and stray capacitance can move the practical oscillation frequency or distort duty cycle. Start with stable timing components, keep the timing capacitor close to the appropriate die connections, and validate the assembled frequency and waveform across temperature before approving the production design.
The listed maximum supply current is 15mA, but total dissipation also depends on the supply voltage and output state. Use the Rev. D LM555 datasheet for detailed current and absolute-maximum information, calculate dissipation for the assembled package and substrate, and provide thermal paths appropriate to the enclosure. Die bonding and package construction can materially change junction temperature, so qualify the complete assembly rather than relying only on the bare-die rating.
اطلاعات انطباق
The LM555-MWC is identified as an industrial-grade timer die, but no specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration is stated for this ordering option.
