| PartNumber | M48T58Y-70MH1F | M48T58-70PC1 | M48T58Y-70MH1E |
| Description | Real Time Clock 64K (8Kx8) 70ns | Real Time Clock 64K (8Kx8) 70ns | Real Time Clock 64K (8Kx8) 70ns |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | Real Time Clock | Real Time Clock | Real Time Clock |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | Through Hole | SMD/SMT |
| Package / Case | SO-28 | PDIP-28 | SO-28 |
| RTC Bus Interface | Parallel | Parallel | Parallel |
| Time Format | HH:MM:SS | HH:MM:SS | HH:MM:SS |
| Battery Backup Switching | Backup Switching | Backup Switching | Backup Switching |
| RTC Memory Size | 64 kB | 8 kB | 64 kB |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 4.5 V | 4.75 V | 4.5 V |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Packaging | Reel | Tube | Tube |
| Function | Calendar, Clock, NV Timekeeping RAM | Calendar, Clock, NV Timekeeping RAM | Calendar, Clock, NV Timekeeping RAM |
| Product | Real Time Clocks | Real Time Clocks | - |
| Series | M48T58Y | M48T58 | M48T58Y |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Moisture Sensitive | Yes | - | Yes |
| Product Type | Real Time Clock | Real Time Clock | Real Time Clocks |
| Factory Pack Quantity | 936 | 240 | 28 |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | Clock & Timer ICs |
| Unit Weight | 0.078125 oz | 0.147798 oz | 0.078125 oz |
| Date Format | - | DW:DM:M:Y | - |