Alternatives to Analog Devices DS1602S
Analog Devices DS1602S and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 DS1602SAnalog Devices |  DS1682S+Analog Devices Inc./Maxim Integrated |  DS1302Z+Analog Devices Inc./Maxim Integrated | |
|---|---|---|---|
| FFF Compatibility | Completely different pinout (uses I2C SCL/SDA instead of 3-wire serial) and narrower SOIC-8 footprint (150 mils vs 208 mils).Both are 8-pin surface mount SOIC packages, but DS1682S+ is a narrow-body SOIC (150 mils width) while DS1602S is a wide-body SOIC (208 mils width).Requires software rewrite to communicate via I2C rather than the proprietary 3-wire serial interface, and operates off main VCC with EEPROM logging instead of battery-backed live clock counting. | Completely different pin assignments and utilizes a narrower 150 mil SOIC-8 footprint instead of the 208 mil footprint.Uses an 8-pin SOIC surface-mount package, but has a narrower body width of 150 mils compared to 208 mils.Functionally serves as a Clock/Calendar RTC rather than a hardware binary counter, meaning elapsed-time tracking must be calculated in MCU firmware from BCD calendar registers. | |
 AI Summary | DS1602S by Analog Devices: Real Time Clock (RTC) IC Elapsed Time Counter 3-Wire Serial 8-SOIC (0.209", 5.30mm Width). | This is the manufacturer-recommended replacement for total elapsed-time recording. It transitions the design from a 3-wire serial interface to I2C, offering robust nonvolatile EEPROM recording for events, but requires physical PCB footprint adjustments and code modifications.
| If preserving a 3-wire interface protocol is a priority, the DS1302Z+ is a viable clock/calendar alternative. Since it does not increment elapsed time in hardware, the host microcontroller must convert the BCD calendar data into elapsed seconds, and the board layout must be updated for the narrower footprint.
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| Lifecycle Status | Obsolete | Active | Active |
| Market Availability | Discontinued | In stock | In stock |
| REACH | REACH | REACH | REACH |
| RoHS | RoHS | RoHS | RoHS |
| Description | Real Time Clock (RTC) IC Elapsed Time Counter 3-Wire Serial 8-SOIC (0.209", 5.30mm Width) | Real Time Clock (RTC) IC Elapsed Time Counter 10B I2C, 2-Wire Serial 8-SOIC (0.154", 3.90mm Width) | Real Time Clock (RTC) IC Clock/Calendar 31B 3-Wire Serial 8-SOIC (0.154", 3.90mm Width) |
| Manufacturer | Analog Devices | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Type | Clock/Timing | Clock/Timing | Clock/Timing |
| Datasheet | Open | Open | Open |
| Lead Time | Unknown | 11 weeks | 10 weeks |
| Country of Origin | - | - | - |
| Export Control Class Number | EAR99 | EAR99 | EAR99 |
| HTSUS Code | 8542.39.0090 | - | - |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - |
| Type | Elapsed Time Counter | - | - |
| Interface | 3-Wire Serial | - | - |
| Date Format | Binary | - | - |
| Time Format | Binary | - | - |
| Mounting Type | Surface Mount | - | - |
| Package / Case | 8-SOIC (0.209", 5.30mm Width) | - | - |
| Voltage - Supply | 4.5V ~ 5.5V | - | - |
| DigiKey Programmable | Not Verified | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 DS1620SAnalog Devices | Non-stock | Obsolete | 4Alternatives availableSee Alternatives |
 DS1682SAnalog Devices | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| DS1682S/T&RAnalog Devices | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 DS1232Analog Devices | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
| DS1232LPS-2Analog Devices | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 DS12887Analog Devices | Non-stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Analog Devices DS1602S is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Analog Devices DS1602S are the DS1682S+ (Analog Devices Inc./Maxim Integrated) and the DS1302Z+ (Analog Devices Inc./Maxim Integrated). Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the DS1602S are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The DS1602S (Analog Devices) is a part in the Clock/Timing category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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