All prices are in US dollars.
Digi-Key Part Number DS1302S+T&RCT-ND
Price Break Unit Price Extended Price
1 3.38000 3.38
10 3.18800 31.88
25 2.55000 63.75
50 2.42260 121.13
100 2.23130 223.13
250 2.11652 529.13
500 2.04000 1,020.00
Quantity Available Digi-Key Stock: 3,211
Can ship immediately

Manufacturer Standard Lead Time 11 Weeks
Manufacturer Part Number


Lead Free Status / RoHS Status Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)

Quantity Item Number ? Customer Reference

When requested quantity exceeds displayed pricing table quantities, a lesser unit price may appear on your order.
You may submit a request for quotation on quantities which are greater than those displayed in the pricing table.

Datasheets DS1302
Product Photos 8-SOIC
Mfg Application Notes Crystal Considerations with Maxim Real-Time Clocks (RTCs)
Using the Dallas Tricklecharge Timekeeper
Using the Dallas Tricklecharge Timekeeper
Design Considerations for Maxim Real-Time Clocks
Lithium Coin-Cell Batteries: Predicting an Application Lifetime
Using the DS32kHz with Maxim Real-Time Clocks
Interfacing a DS1302 With an 8051-Type Microcontroller
Estimating Super Capacitor Backup Time on Trickle-Charger Real-Time Clocks
Selecting a Backup Source for Real-Time Clocks
Oscillator Design Considerations for Low-Current Applications
State Machine Logic in Binary-Coded Decimal (BCD)-Formatted Real-Time Clocks
Product Training Modules Lead (SnPb) Finish for COTS
Long-Term Supply Program
Featured Product DS1302 Trickle-Charge Timekeeping Chip
Standard Package ? 1

Integrated Circuits (ICs)


Clock/Timing - Real Time Clocks

Series -
Packaging ? Cut Tape (CT)?
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 2 V ~ 5.5 V
Voltage - Supply, Battery 2 V ~ 5.5 V
Current - Timekeeping (Max) 0.3µA ~ 1µA @ 2V ~ 5V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package / Case 8-SOIC (0.209", 5.30mm Width)
Supplier Device Package 8-SO
Online Catalog Serial Address
Other Names DS1302S+T&RCT
Alternate Package | This part is also available in the following packaging:
Digi-Key Part Number Manufacturer Part Number Manufacturer Packaging Quantity Available Unit Price Minimum Quantity
DS1302S+T&RTR-ND DS1302S+T&R Maxim Integrated Tape & Reel (TR)? 2,000 - Immediate
1.53000 2,000
DS1302S+T&RDKR-ND DS1302S+T&R Maxim Integrated Digi-Reel®? 3,211 - Immediate
Digi-Reel® 1
DS1302S+-ND DS1302S+ Maxim Integrated Tube? 2,324 - Immediate
3.37000 1

Tape & Reel, Cut Tape and Digi-Reels are all derived from the same manufacturer’s part number. Inventory from Tape & Reel is used to fulfill Cut Tape and Digi-Reel orders and will impact the total quantity available.

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08:46:29 6/26/2016