DS1602S

Real Time Clock Overview

The DS1602S is an elapsed time counter integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates via a 3-wire serial interface and utilizes binary formats for both date and time data. The device functions within a supply voltage range of 4.5V to 5.5V, with a maximum current consumption of 50µA at 5V during timing operations. It supports battery backup voltages between 2.5V and 3.5V. The component is housed in an 8-SOIC package (0.209 inch width) and is rated for operation across a temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• Binary elapsed time counting capability
• 3-wire serial interface compatibility
• Low power consumption of 50µA @ 5V
• Battery backup support from 2.5V to 3.5V

Real Time Clock Applications

• Portable system controllers requiring elapsed time tracking
• Industrial monitoring systems needing non-volatile timekeeping
• Embedded devices utilizing 3-wire serial communication protocols

Real Time Clock Procurement Notes

Verify the specific suffix designation when ordering, as variants such as DS1602S-TRL exist with different interfaces like I2C. Confirm package dimensions match the 8-SOIC specification. Check manufacturer documentation for lifecycle status, as some related models indicate end-of-life conditions. Ensure supply voltage requirements align with the 4.5V to 5.5V operational range specified for this part number.

Real Time Clock Selection Notes

Select the DS1602S when binary elapsed time counting is required over calendar-based RTC functions. Ensure the design supports a 3-wire serial interface rather than I2C or SPI. Verify that the operating environment stays within the -40°C to +85°C temperature range. Confirm that the system can provide the necessary 4.5V to 5.5V main supply and 2.5V to 3.5V battery backup voltage.

Real Time Clock Part Context

The DS1602S belongs to the DS1602 family of elapsed time counters. It differs from calendar-based real-time clocks by focusing on duration measurement rather than absolute date/time. The 3-wire interface distinguishes it from other Maxim Integrated RTCs that may use I2C or 1-Wire protocols. It shares the 8-SOIC packaging common to many Maxim Integrated sensor and timer ICs.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.