Manufacturer | Part Number | Clock | Calendar | Alarm | Snooze | Radio | Sleep | 50/60 Hz | 12/24 Hr | BCD outputs | Lamp Test | Blanking | Brightness | Battery Backup | Ext Clock | Notes |
Fairchild | FCM7001 | Y | Y | Y | Y | Y | Y | 50/60 | 12/24 | N | ? | ? | ? | Y | Y | . |
Fairchild | FCM7002 | Y | Y | Y | Y | Y | Y | 50/60 | 12/24 | Y | ? | ? | ? | Y | Y | . |
Fairchild | FCM7003 | Y | Y | Y | Y | Y | Y | 50/60 | 12/24 | N | ? | ? | ? | Y | Y | . |
Fairchild | FCM7004 | Y | Y | Y | Y | Y | Y | 50/60 | 12/24 | N | ? | ? | ? | Y | Y | European calendar format |
Mostek | MK5017AA | Y | N | Y | Y | N | N | 50/60 | 12/24 | N | ? | ? | ? | Y | Y | . |
Mostek | MK5017AB | Y | N | Y | Y | Y | Y | 50/60 | 12/24 | N | ? | ? | ? | Y | Y | . |
Mostek | MK5017BB | Y | N | Y | Y | N | N | 50/60 | 12/24 | N | ? | ? | ? | Y | Y | . |
Mostek | MK50250 | Y | N | Y | Y | N | N | 50/60 | 12/24 | N | ? | Y* | Y | ? | Y | 12hr/60Hz or 24hr/50Hz. Blanking pin 12. |
Mostek | MK50253 | Y | N | Y | Y | N | N | 50Hz | 12/24 | N | ? | Y* | Y | ? | Y | Blanking pin 12. |
Mostek | MK50254 | Y | N | Y | Y | N | N | 60Hz | 12/24 | N | ? | Y* | Y | ? | Y | Blanking pin 12. |
National | MM5309 | Y | N | N | N | N | N | 50/60 | 12/24 | Y | ? | ? | ? | ? | Y | . |
National | MM5311 | Y | N | N | N | N | N | 50/60 | 12/24 | Y | ? | ? | ? | ? | Y | . |
National | MM5313 | Y | N | N | N | N | N | 50/60 | 12/24 | Y | ? | ? | ? | ? | Y | . |
National | MM5314 | Y | N | N | N | N | N | 50/60 | 12/24 | N | ? | Y | ? | ? | Y | . |
National | MM5315 | Y | N | N | N | N | N | 50/60 | 12/24 | Y | ? | ? | ? | ? | Y | . |
National | MM5375AA | Y | N | Y | Y | N | N | 60Hz | 12Hr | N | Y | ? | Y | ? | Y | . |
National | MM5375AB | Y | N | Y | Y | N | N | 60Hz | 12Hr | N | Y | ? | Y | ? | Y | . |
National | MM5375AC | Y | Y | N | N | N | N | 50Hz | 24Hr | N | Y | ? | Y | ? | Y | 31-day counter. |
National | MM5375AD | Y | N | N | N | N | N | 60Hz | 12Hr | N | Y | ? | Y | ? | Y | . |
National | MM5375AE | Y | N | N | N | N | N | 60Hz | 24Hr | N | Y | ? | Y | ? | Y | . |
National | MM5375AG | Y | N | Y | Y | N | N | 60Hz | 12Hr | N | Y | ? | Y | ? | Y | . |
National | MM3575AH | Y | Y | N | N | N | N | 60Hz | 12Hr | N | Y | ? | Y | ? | Y | 31-day counter. |
National | MM5375AI | Y | N | Y | Y | N | N | 50Hz | 24Hr | N | Y | ? | Y | ? | Y | . |
National | MM5375AJ | Y | N | Y | Y | N | N | 50Hz | 24Hr | N | Y | ? | Y | ? | Y | . |