| PartNumber | DS1501YS+ | DS1501YS | DS1501YSN |
| Description | Real Time Clock | Real Time Clock | IC RTC CLK/CALENDAR PAR 28-SOIC |
| Manufacturer | Maxim Integrated | Maxim Integrated | - |
| Product Category | Real Time Clock | Real Time Clock | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | SOIC-28 | SOIC-28 | - |
| RTC Bus Interface | Parallel | Parallel | - |
| Time Format | HH:MM:SS | HH:MM:SS | - |
| RTC Memory Size | 256 B | 256 B | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Function | Alarm, Calendar, Clock, Watchdog Timekeeper | Alarm, Calendar, Clock, Watchdog Timekeeper | - |
| Series | DS1501YS | DS1501YS | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Product Type | Real Time Clocks | Real Time Clocks | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Part # Aliases | DS1501YS | - | - |
| Unit Weight | 0.078125 oz | 0.078125 oz | - |