| | | | | | | | | | | | | | | | | | | | | |
| ![RTC-72421A:ROHS RTC-72421A:ROHS](https://oss.origin-ic.net/productThumbImages/18-Dip_tmb.jpg) | IC RTC CLK/CALENDAR PAR 18-DIP | | 联系我们 | PCB Symbol, Footprint & 3D Model | Through Hole | 4.5V ~ 5.5V | 18-DIP (0.300", 7.62mm) | 18-DIP | - | -10°C ~ 70°C | Parallel | - | RTC-72421 | Clock/Calendar | Leap Year | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | - | 5µA ~ 10µA @ 2V ~ 5V | - |
| ![RTC-72421B: ROHS RTC-72421B: ROHS](https://oss.origin-ic.net/productThumbImages/18-Dip_tmb.jpg) | IC RTC CLK/CALENDAR PAR 18-DIP | | 联系我们 | PCB Symbol, Footprint & 3D Model | Through Hole | 4.5V ~ 5.5V | 18-DIP (0.300", 7.62mm) | 18-DIP | - | -10°C ~ 70°C | Parallel | - | RTC-72421 | Clock/Calendar | Leap Year | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | - | 5µA ~ 10µA @ 2V ~ 5V | - |
| ![RTC-72421A: PURE SN RTC-72421A: PURE SN](https://oss.origin-ic.net/productThumbImages/18-Dip_tmb.jpg) | IC REAL TIME CLOCK/CALENDAR | | 联系我们 | PCB Symbol, Footprint & 3D Model | Through Hole | 4.5V ~ 5.5V | 18-DIP (0.300", 7.62mm) | 18-DIP | - | -10°C ~ 70°C | Parallel | - | RTC-72421 | Clock/Calendar | Leap Year | HH:MM:SS (12/24 hr) | - | - | 5µA ~ 10µA @ 2V ~ 5V | - |
| ![RTC-72421B: PURE SN RTC-72421B: PURE SN](https://oss.origin-ic.net/productThumbImages/18-Dip_tmb.jpg) | IC REAL TIME CLOCK/CALENDAR | | 联系我们 | PCB Symbol, Footprint & 3D Model | Through Hole | 4.5V ~ 5.5V | 18-DIP (0.300", 7.62mm) | 18-DIP | - | -10°C ~ 70°C | Parallel | - | RTC-72421 | Clock/Calendar | Leap Year | HH:MM:SS (12/24 hr) | - | - | 5µA ~ 10µA @ 2V ~ 5V | - |