In the SSOP package, real time clocks is embedded.Tape & Reel is the way time clock is packaged.Temperatures higher than -40°C should be used.Temperatures below 85°C are recommended for operation.
DS2404B/T&R Features
SSOP package
DS2404B/T&R Applications
There are a lot of Maxim Integrated DS2404B/T&R Real Time Clocks applications.