| Device | Features | Package | Order code | | |
DS1302+ | 8 x 31 RAM, TTL compatible, trickle charge capability, dual power | DIL-16 | 82-0561 | | |
| supply pins for primary backup power supplies | | | | |
DS1305+ | 96-byte nonvolatile RAM, two time of day alarms, burst mode for | DIL-16 | 82-0563 | | |
| reading/writing successive addresses in clock/RAM, dual power | | | | |
| supply pins for primary backup supplies. | | | | |
DS1307+ | 56-byte nonvolatile RAM, programmable squarewave o/p, | DIL-8 | 82-0567 | | |
| automatic power fail detect and switch circuitry | | | | |
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