TS555CN CMOS Low Power Analog Timer SOP-8

TS555CN CMOS Low-Power Analog Timer (SOP-8) delivers versatile timing and pulse-generation with low quiescent current. Designers use it for long-life battery devices, precision pulse timing, and stable astable/monostable circuits where low power and CMOS-level performance matter.

Key Features:

• Low Power Consumption: Optimized quiescent current for battery-powered and energy-sensitive applications.
• Wide Supply Range: Operates across typical CMOS ranges to support 2 V to 16 V systems (verify specific supplier datasheet).
• Stable Timing: Produces accurate astable and monostable pulses with low temperature drift.
• TTL/CMOS Compatible Output: Interfaces directly with logic and driver stages for flexible system integration.
• SOP-8 Surface-Mount Package: Fits compact PCBs and standard SMT assembly flows.
• Reset and Control Inputs: Provide easy external control and pulse gating for complex timing schemes.

Technical Specifications:

• Supply Voltage (V_CC): Typical CMOS range, 2 V to 16 V (confirm on datasheet).
• Quiescent Current: Low standby current suitable for long battery life (see manufacturer datasheet for typical µA values).
• Output Drive: CMOS-compatible push-pull output. Capable of driving typical logic loads; check peak output current in datasheet before driving heavy loads.
• Timing Range: Wide timing range determined by external R and C. Supports microsecond to many-second intervals with appropriate external components.
• Control Voltage: External control pin allows modulation of threshold for fine timing adjustment.
• Operating Temperature: Commercial range typically −40 °C to +85 °C (verify supplier sheet).

Mechanical Specifications:

• Package Type: SOP-8 (surface-mount, 8-pin).
• Lead Finish: Tin or gold plated leads depending on manufacturer.
• Body Material: Molded epoxy suitable for standard SMT reflow profiles.
• Mounting: Standard SMT pick-and-place and reflow soldering.

Dimensions:

• SOP-8 Typical Body: Consult manufacturer mechanical drawing for exact package dimensions and footprint recommendations.
• Pad and Solder Recommendations: Use supplier-recommended footprint and solder mask openings for reliable assembly and rework.

Pinout and Wiring:

• Pin 1: Ground (GND).
• Pin 2: Trigger (TRIG) — low pulse triggers the output in monostable mode.
• Pin 3: Output (OUT) — push-pull CMOS output for driving loads and logic.
• Pin 4: Reset (RESET) — active-low reset to force output low; tie high for normal operation.
• Pin 5: Control Voltage (CTRL) — use to adjust threshold or filter noise (add 10 nF decoupling if unused).
• Pin 6: Threshold (THR) — monitors capacitor voltage for timing transitions.
• Pin 7: Discharge (DISC) — open-collector/discharge transistor for timing capacitor control.
• Pin 8: VCC — positive supply input.
• Wiring Notes: Place a 0.01 µF to 0.1 µF decoupling capacitor close to VCC and GND. Use the CTRL pin decoupling to reduce timing jitter. For long leads on trigger or reset use series resistors or small capacitors to debounce input noise.

Datasheet Reference:

• Download the official TS555CN datasheet from the manufacturer for absolute maximum ratings, typical performance curves, timing examples, and recommended PCB footprint. Always verify electrical and thermal limits against your application’s requirements.

Applications:

• Battery-Powered Timers: Use in low-power alarms, sleep timers, and interval controllers.
• Pulse Generation: Create accurate clock pulses, frequency sources, and PWM signals.
• Debouncing and Watchdog: Implement reliable push-button debouncing and simple watchdog timers.
• LED Flashers and Blinkers: Drive LED sequences with stable timing and low standby drain.
• Sensor Sampling: Use as timing reference for low-power sensor read cycles.

Equivalent Models:

• ICM7555 / LMC555 / TLC555: CMOS low-power timer families with similar functionality. Validate voltage range and timing characteristics when substituting.
• NE555: Classic bipolar timer. Use NE555 only when higher drive current or legacy compatibility justify higher quiescent current.

Package Includes:

• 1 x TS555CN CMOS Low-Power Analog Timer (SOP-8)