DS1315S-5

Overview

The DS1315S-5 is a Phantom Time Chip combining a CMOS timekeeper and nonvolatile memory controller in a 16-pin SO package. It tracks hundredths of seconds through years with automatic leap year correction valid to 2100. The device operates on a single +5V supply (4.5V–5.5V) or +3.3V, featuring industrial temperature range availability. Communication uses a 64-bit serial pattern recognition sequence, eliminating address space requirements for the RTC. It supports redundant battery inputs for high-reliability applications and interfaces directly with external CMOS RAM or ROM.

Feature Summary

• Real-time clock tracking hundredths of seconds, seconds, minutes, hours, days, dates, months, and years
• Automatic leap year correction valid up to the year 2100
• No address space required for RTC communication via 64-bit serial pattern recognition
• Nonvolatile controller functions for battery backup of external SRAM

Applications

• High-reliability systems requiring redundant battery attachment
• Industrial equipment operating within -40°C to +85°C ranges
• Systems interfacing with external CMOS RAM or ROM for nonvolatile storage

Procurement Notes

Verify the specific suffix 'S-5' corresponds to the 16-pin SO package and +5V operation. Confirm RoHS compliance status indicated by '+' symbols in ordering information. Check current manufacturing status as older revisions may be discontinued.

Selection Notes

Select this component when a dedicated RTC interface without address decoding is required. Ensure the system design accommodates the 64-bit serial handshake protocol. Verify power supply stability within the 4.5V to 5.5V range for optimal performance.

Part Context

The DS1315 series integrates timekeeping and memory control functions. The 'S' indicates a 16-pin Small Outline package, while '-5' specifies +5V operation. This variant is part of the broader Phantom Time Chip family designed for seamless integration with standard CMOS memory devices.

Replacement Considerations

Direct pin-compatible replacements include other DS1315 variants such as DS1315N-5+ for industrial temperature ranges or DS1315S-33+ for 3.3V operation. Verify electrical characteristics match the existing design constraints.