MAX31334EWC+T

Real Time Clock Overview

The MAX31334EWC+T is an ultra-low-power real-time clock (RTC) featuring an integrated high-side power switch. It consumes a typical timekeeping current of 70nA with a supply voltage range of 1.1V to 5.5V. The device includes automatic switchover to a backup supply on power failure and supports I2C communication at frequencies up to 400kHz. Key electrical parameters include a PSW output on-resistance of 57mΩ (typical at 3.0V) and a maximum continuous current of 500mA. It operates within a temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• Ultra-low timekeeping current of 70nA
• Integrated power switch with 57mΩ on-resistance
• Automatic backup supply switchover
• I2C interface supporting 400kHz fast mode

Real Time Clock Applications

• Electronic shelf labels
• Ultra-low-power IoT modules
• Medical wearables
• Temperature loggers
• Asset tracking devices

Real Time Clock Procurement Notes

Verify the package code W121L1+2 corresponds to the 12-WLP configuration for the E suffix. Confirm RoHS compliance status via official documentation before procurement. Ensure the ordering suffix matches the specific reel or cut tape requirements for manufacturing integration.

Real Time Clock Selection Notes

Select this component for applications requiring duty-cycled power management due to the integrated power switch. Ensure the system VCC remains above 1.62V for reliable I2C operation. Verify that the external crystal meets the minimum quality factor requirement of 9000 for stable oscillation.

Real Time Clock Part Context

This part belongs to the MAX31334 series of real-time clocks manufactured by Analog Devices/Maxim Integrated. It is designed for battery-powered systems where minimizing standby current is critical. The E suffix indicates the specific package variant, while the +T denotes the tape and reel packaging format.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.