MC145010P

The MC145010P from NXP Semiconductors is an advanced, very-low-power CMOS integrated circuit specifically designed for use in photoelectric smoke detector systems. It interfaces with an infrared photoelectric chamber to detect smoke particles by sensing scattered light. The IC is suitable for applications complying with UL217 and UL268 specifications.

Key electrical characteristics include an operating voltage range of 6 to 12V and an average supply current of just 12 µA, making it ideal for battery-powered devices. The operating temperature range is specified from -10°C to 60°C. The component features on-chip push-pull drivers for sounding a pulsating alarm via an external piezoelectric transducer.

This device is housed in a 16-DIP (Dual In-line Package) with through-hole mounting. The MC145010P includes electrostatic discharge (ESD) and latch-up protection circuitry on all pins. Its I/O pin allows for interconnection of up to 40 units for common signaling, enabling remote smoke detection alerts.

The MC145010P is designed for robust performance in smoke detection applications. It incorporates features like a variable-gain photo amplifier for direct interface to IR detectors and a monitor circuit for checking chamber sensitivity. The IC also supports features like activating escape lights or auxiliary alarms through its I/O pin.