RE46C190 is a low-power, low-voltage CMOS photoelectric smoke detector IC. The circuit provides all the necessary functions of a photoelectric smoke detector with minimal external components.
The RE46C190 is a low-power, low-voltage CMOS photoelectric smoke detector IC designed to provide all necessary functions for a photoelectric smoke detector with minimal external components. It features an internal oscillator, a programmable IRED current driver, and adjustable sensitivity in silent mode. The device operates on two AA batteries and includes features such as local alarm memory, up to 40 interconnected detectors, and a 9-minute timer for sensitivity control. It supports both short and continuous beep modes and includes internal battery low-battery and chamber test functions. This manual is written in Chinese.
| Operating Voltage (VDD) | 3V to 5V |
|---|---|
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -55°C to +125°C |
| Standby Current | 12µA |
| Standby Boost Current | 100nA |
| Internal Clock Period | 10.4ms |
| Standby LED On Time | 344ms |
| Silent Timer Period | 10.7s |
| Local Alarm Period (Short Beep) | 500ms |
| Local Alarm Period (Continuous Beep) | 667ms |
The operating voltage (VDD) ranges from 3V to 5V.
Up to 40 detectors can be interconnected.
The standby current is 12µA under specified conditions.
Yes, it supports both short and continuous beep modes for local alarms.