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Analog Devices DS17885S-5+ — DC-DC Power Modules

DS17885S-5+ RTC Clock/Calendar, 8KB NVSRAM, 5V, 24-SOIC

MPNDS17885S-5+
End of Life

Maxim Integrated DS17885S-5+ Clock/Calendar RTC, Parallel interface, 8KB NVSRAM, 4.5V-5.5V supply, 24-SOIC, 0°C to 70°C, Active, ROHS3.

$20.88Ref. price · indicative, final on quote
Analog Devices DS17885S-5+ datasheet (PDF)
Packaging24-SOIC (0.295", 7.50mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DS17885S-5+ specifications
ParameterValue
TypeClock/Calendar
MountingSurface Mount
Voltage4.5V ~ 5.5V
Voltage - supply, battery2.5V ~ 3.7V
Current - timekeeping3mA @ 4.5V ~ 5.5V
InterfaceParallel
Operating temperature0°C ~ 70°C
PackageTube
FeaturesAlarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
Date formatYY-MM-DD-dd
Memory size8KB
Time formatHH:MM:SS (12/24 hr)
Case24-SOIC (0.295\", 7.50mm Width)

Product details

The DS17885S-5+ from Maxim Integrated is a parallel-interface real-time clock (RTC) that combines a full clock/calendar function with 8KB of non-volatile SRAM (NVSRAM) in a single 24-SOIC package. It tracks time in HH:MM:SS (12/24 hr) and date in YY-MM-DD-dd format, with built-in alarm, daylight savings, and leap year compensation. The 8KB NVSRAM retains data through the battery backup pin, making it a fit for embedded systems that need both timekeeping and small persistent storage without external EEPROM.

For buyers filling a BOM line, this part is a stable, in-production choice with no LTB risk.

Frequently asked questions

Does DS17885S-5+ require a battery and what voltage?

Yes, the DS17885S-5+ has a dedicated battery backup pin (VBAT) that accepts 2.5V to 3.7V. A standard 3V lithium coin cell such as a CR2032 is suitable for maintaining timekeeping and NVSRAM contents when main power is off.

Is DS17885S-5+ compatible with 5V systems?

Yes, the DS17885S-5+ operates from a 4.5V to 5.5V supply, making it directly compatible with 5V logic and power rails. It is not a 3.3V-only part.

Is DS17885S-5+ RoHS compliant?

Yes, the DS17885S-5+ is ROHS3 compliant.

What is a replacement or equivalent for DS17885S-5+?

The DS17885S-5+ is an active, current-production part with no official successor listed. For a pin-compatible alternative within the same family, the DS17885S-3+ (3.3V variant) shares the same footprint and function but operates at a lower supply voltage — check your system's power rail before substituting.