1338D-31DVGI

Overview

The 1338D-31DVGI is a Real-Time Clock (RTC) IC manufactured by Renesas Electronics, belonging to the 1338 series. It provides timekeeping and calendar functions in an 8-pin TSSOP package. The device operates with a main supply voltage of 2V to 5.5V and supports a battery input range of 1.3V to 3.7V. It features an I2C serial interface for communication. Key specifications include a maximum current consumption of 200µA at 3.63V to 5.5V during timing operations. The component is rated for an operating temperature range of -40°C to 85°C and holds a Moisture Sensitivity Level (MSL) rating of 3.

Feature Summary

• Integrated Real-Time Clock with Calendar functionality supporting HH:MM:SS and YY-MM-DD-dd formats
• I2C Serial Interface (2-wire) for system communication
• Low Power Consumption: 200µA max at 3.63V ~ 5.5V
• Wide Operating Voltage: 2V ~ 5.5V VCC, 1.3V ~ 3.7V Battery

Applications

• Embedded systems requiring precise timekeeping
• Data logging equipment
• Consumer electronics with calendar functions

Procurement Notes

Verify the specific suffix 'DVGI' against the official Renesas datasheet to confirm pinout and electrical characteristics. Check for Product Change Notifications (PCN) regarding packaging or material updates. Confirm availability status as distribution data may vary. Ensure compliance with RoHS directives if required for the target assembly process.

Selection Notes

Select this component when an I2C-compatible RTC with low power consumption is needed for space-constrained designs using an 8-TSSOP package. Verify that the system voltage falls within the 2V to 5.5V range. Consider the MSL 3 rating for reflow soldering profile requirements. Compare against other 1338 series variants if different interfaces or packages are preferred.

Part Context

This part belongs to the Renesas 1338 series of Real-Time Clocks. It is functionally related to other models such as the 1338B-18DVGI8 and 1339-2DVGI, which share similar RTC capabilities but may differ in packaging, interface details, or specific feature sets like trickle charging or alarm outputs.

Replacement Considerations

Direct substitutes within the same family include the 1338B-18DVGI8, though package and quantity differences exist. Cross-referencing with IDT-branded equivalents from the legacy Intersil portfolio may be necessary, ensuring pin compatibility and electrical specs match exactly.