DS1602

Real Time Clock Overview

The DS1602 is a Real-Time Clock (RTC) and elapsed time counter manufactured by Analog Devices Inc. / Maxim Integrated. It operates on a single supply voltage ranging from 4.5 V to 5.5 V, with a battery backup range of 2.5 V to 3.5 V. The device features a binary time format and utilizes a serial interface for data communication. It supports calendar, clock, and elapsed time counting functions within an operating temperature range of -40°C to +85°C. Available in through-hole packages such as PDIP-8 and SOIC-8, the IC draws a maximum current of 50 µA at 5 V during timing operations.

Real Time Clock Feature Summary

• Integrated Real-Time Clock and Elapsed Time Counter functionality
• Binary time and date format support
• Serial interface compatibility (I2C/2-Wire)
• Low power consumption with 50 µA typical current draw

Real Time Clock Applications

• Data logging systems requiring precise timestamping
• Industrial equipment needing elapsed time tracking
• Embedded devices with calendar and clock requirements

Real Time Clock Procurement Notes

The DS1602 is listed as an End-of-Life (EOL) product by the manufacturer. Availability is restricted, and distributors may not stock new units. Verification of component authenticity and storage conditions is critical when sourcing from secondary markets due to the discontinued status.

Real Time Clock Selection Notes

Designers should verify package compatibility, as the DS1602 is available in both Through-Hole (PDIP) and Surface-Mount (SOIC) variants. Ensure the system design accommodates the specific serial interface protocol and voltage levels. Consider alternative RTC components if long-term supply stability is required for new production runs.

Real Time Clock Part Context

The DS1602 belongs to the DS1602 series of real-time clocks. It serves as a specialized timer solution for applications requiring accurate timekeeping without complex microcontroller overhead. The device integrates necessary logic for maintaining time via a backup battery source.

Real Time Clock Replacement Considerations

As the DS1602 is discontinued, engineers must evaluate pin-compatible or functionally equivalent RTCs. Verify that replacement parts support the same serial interface and voltage ranges to minimize redesign efforts.