| Part Numbers | Manufacturer Name | Datasheet | Type | Input | Frequency - Max | Voltage - Supply | Operating Temperature | Mounting Type | Package / Case |
|---|---|---|---|---|---|---|---|---|---|
| RTC-72421A | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -10°C ~ 70°C | Through Hole | 18-DIP (0.300", 7.62mm) | |
| RTC-72423A | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -40°C ~ 85°C | Surface Mount | 24-SOIC (0.311", 7.90mm Width) | |
| RTC-72421A:ROHS | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -10°C ~ 70°C | Through Hole | 18-DIP (0.300", 7.62mm) | |
| RTC-72421B:ROHS | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -10°C ~ 70°C | Through Hole | 18-DIP (0.300", 7.62mm) | |
| RTC-72423A:3:ROHS | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -40°C ~ 85°C | Surface Mount | 24-SOIC (0.311", 7.90mm Width) | |
| RTC-72423B:3:ROHS | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -40°C ~ 85°C | Surface Mount | 24-SOIC (0.311", 7.90mm Width) | |
| RTC-72423B:ROHS | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -40°C ~ 85°C | Surface Mount | 24-SOIC (0.311", 7.90mm Width) | |
| RTC-62421A | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -40°C ~ 85°C | Through Hole | 18-DIP (0.300", 7.62mm) | |
| RTC-72421B | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -10°C ~ 70°C | Through Hole | 18-DIP (0.300", 7.62mm) | |
| RTC-72423B | EPSON TOYOCOM CORP | Clock/Calendar | - | - | 4.5 V ~ 5.5 V | -40°C ~ 85°C | Surface Mount | 24-SOIC (0.311", 7.90mm Width) |
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