| PartNumber | DS1511W+ | DS1511Y | DS1511W |
| Description | Real Time Clock Y2K-Compliant Watchdog | Real Time Clock | Real Time Clock |
| Manufacturer | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Product Category | Real Time Clock | Real Time Clock | Real Time Clock |
| RoHS | Y | N | N |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Package / Case | DIP-28 | PDIP-28 | PDIP-28 |
| RTC Bus Interface | Parallel | Parallel | Parallel |
| Date Format | YYYY-MM-DD | - | - |
| Time Format | HH:MM:SS | HH:MM:SS | HH:MM:SS |
| RTC Memory Size | 256 B | 256 B | 256 B |
| Supply Voltage Max | 3.6 V | 5.5 V | 3.6 V |
| Supply Voltage Min | 3 V | 4.5 V | 3 V |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Packaging | Tube | - | - |
| Function | Watchdog Timekeeper | Alarm, Calendar, Clock, Watchdog Timekeeper | Alarm, Calendar, Clock, Watchdog Timekeeper |
| Product | Real Time Clocks | - | - |
| Series | DS1511W | DS1511Y | DS1511W |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Operating Supply Current | 10 mA | - | - |
| Product Type | Real Time Clock | Real Time Clocks | Real Time Clocks |
| Factory Pack Quantity | 12 | - | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Part # Aliases | 90-1511W+000 DS1511W | - | - |
| Unit Weight | 0.147724 oz | 0.147798 oz | 0.147798 oz |