DS17485S-3

The DS17485S-3 is a Real Time Clock (RTC) IC manufactured by Analog Devices Inc./Maxim Integrated. This component is designed for clock and calendar functions, offering features such as an alarm, daylight savings support, leap year compensation, Non-Volatile SRAM (NVSRAM), and a programmable square-wave output. It operates with a timekeeping current of 2mA at 2.7V to 3.7V and supports both 12-hour and 24-hour time formats, as well as YY-MM-DD-dd date format.

This RTC IC utilizes a parallel interface for data access and includes 4KB of memory. It is housed in a 24-SOIC package with a width of 7.50mm and is designed for surface mounting. The operating temperature range for the DS17485S-3 is from 0°C to 70°C. It is specified as RoHS3 Compliant, REACH Unaffected, and has a Moisture Sensitivity Level (MSL) of 1 Unlimited.

Successor to industry-standard DS12885 and DS12887, the DS17x87 series integrates a quartz crystal and lithium energy source. The DS17x85 and DS17x87 power-control circuitry allows system power-on via external stimulus like keyboard or a time-and-date alarm. The PWR output pin is triggered by these events to turn on an external power supply, and is under software control for system power shutdown upon task completion. Applications include embedded systems, utility meters, security systems, and network hubs, bridges, and routers.