DS1302SN-16/T&R

$2.71

Description：IC RTC CLK/CALENDAR SER 16SOIC
Series：-

SKU:4f5377a29931 Category: Real Time Clocks Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR SER 16SOIC
Series：-
Package：Tape & Reel (TR)
Mfr：Analog Devices Inc./Maxim Integrated
Type：Clock/Calendar
Features：Leap Year, NVSRAM, Trickle-Charger
Memory Size：31B
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：3-Wire Serial
Voltage - Supply：2V ~ 5.5V
Voltage - Supply, Battery：2V ~ 5.5V
Current - Timekeeping (Max)：0.3µA ~ 1µA @ 2V ~ 5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Grade：-
Qualification：-
Package / Case：16-SOIC (0.295", 7.50mm Width)
Supplier Device Package：16-SOIC

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DS1302SN-16/T&R

Overview

The DS1302SN-16/T&R is a Real-Time Clock (RTC) integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It manages timekeeping functions including seconds, minutes, hours, date, month, day of the week, and year with leap-year compensation valid up to 2100. The device features 31 bytes of battery-backed static RAM and communicates via a simple 3-wire serial interface compatible with most microcontrollers. Operating on a supply voltage of 2V to 5.5V, it supports both 12-hour and 24-hour formats. The component is housed in a 16-SOIC package (0.295", 7.50mm width) and operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

Real-time clock/calendar with leap-year compensation valid up to 2100
31-byte battery-backed general-purpose RAM
Simple 3-wire synchronous serial interface (CE, I/O, SCLK)
Low power operation: less than 300nA at 2.0V

Applications

Embedded systems requiring precise time tracking
Industrial control panels operating in wide temperature ranges
Data logging devices needing non-volatile memory backup
Portable instruments with battery-powered constraints

Procurement Notes

Verify the specific package variant against official documentation, as standard datasheets typically list 8-pin configurations for the DS1302 family. Confirm that the 16-SOIC form factor matches the intended PCB footprint and pinout requirements before procurement. Ensure the Tape & Reel packaging aligns with automated assembly equipment specifications.

Selection Notes

Select this component when a low-cost RTC with minimal GPIO usage is required. The 3-wire interface allows communication using any three available pins without dedicated hardware peripherals. Verify that the system can support the required crystal load capacitance of 6pF for accurate timing. Consider the trickle charger feature if battery maintenance is needed.

Part Context

The DS1302 series is a successor to the DS1202, offering enhanced features such as dual power pins for primary and backup supplies and a programmable trickle charger. While the standard datasheet specifies 8-pin packages (DIP/SO), the 16-SOIC variant provides an alternative surface-mount option for space-constrained designs requiring the same functional core.