The DS1390U-33+T&R is a high-precision, low-power real-time clock (RTC) with a built-in temperature-compensated crystal oscillator (TCXO) and crystal from Maxim Integrated. This RTC device is designed for applications requiring accurate timekeeping and a compact, surface-mount package that can be easily integrated into a variety of systems.

Key Features

• Accuracy: The device maintains an impressive timekeeping accuracy over a wide temperature range, thanks to its temperature-compensated design.
• Power Management: It features a VCC power supply pin for primary power and a VBAT input for backup power, ensuring that timekeeping continues uninterrupted during primary power loss.
• Communication: The DS1390U-33+T&R communicates with a microcontroller via a simple serial interface, which is compatible with SPI protocols.
• Package: Supplied in a compact, 10-pin µSOP package, it is suitable for space-constrained applications.
• Temperature Range: It operates over an industrial temperature range of -40°C to +85°C, making it versatile for various environments.
• Trickle-Charge Capability: This RTC includes an integrated trickle-charge circuit that can be used to recharge a backup battery, extending its life.

Applications

The DS1390U-33+T&R is ideal for a wide array of applications, such as:

• Telecommunications
• Networking equipment
• Industrial systems
• Embedded systems
• Portable medical devices
• Consumer electronics

Ordering Information

The "+T&R" suffix in the part number indicates that this product is offered in tape and reel packaging, which is commonly used for automated assembly processes. This packaging option facilitates efficient handling and placement during the manufacturing of electronic devices, making the DS1390U-33+T&R an excellent choice for mass production requirements.

Conclusion

The DS1390U-33+T&R from Maxim Integrated represents a reliable and precise solution for electronic systems in need of an RTC component. Its integration of a TCXO, along with its robust feature set and compact form factor, make it a go-to choice for engineers and designers looking to enhance their products with accurate timekeeping functionality.