 | RX-8581SA:B | 628 | EPSON | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥3.1800 | IC REAL TIME CLOCK 14-SOP | 购买 |
| DS1337U+ | 4534 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥2.5900 | IC RTC SERIAL 2WIRE LP 8-USOP | 购买 |
| DS1672U-3+ | 94 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.4700 | IC TIMEKEEPER 3V 32-BIT 8-USOP | 购买 |
| DS1374U-3+ | 110 | Maxim Integrated Products | 19+ | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） | ￥3.8500 | IC RTC I2C W/CHARGER 10-USOP | 购买 |
| DS1394U-33+ | 225 | Maxim Integrated Products | 19+ | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） | ￥3.8600 | IC RTC SPI 3WIRE W/CHRGR 10-MSOP | 购买 |
| RTC-7301DG:BS ROHS | 50 | EPSON | 19+ | 18-DIP（0.300"，7.62mm） | ￥4.8300 | IC REAL TIME CLOCK 18-DIP | 购买 |
| RTC-72423A:ROHS | 350 | EPSON | 19+ | 24-SOIC（0.315"，8.00mm 宽） | ￥6.1300 | IC REAL TIME CLOCK 24-SOP | 购买 |
| DS1683S+ | 31 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥5.6000 | IC REAL TIME EVENT REC 8-SOIC | 购买 |
| DS1305N+ | 139 | Maxim Integrated Products | 19+ | 16-DIP（0.300"，7.62mm） | ￥6.3300 | IC RTC SERIAL ALARM 16-DIP | 购买 |
| DS1685SN-3+ | 60 | Maxim Integrated Products | 19+ | 24-SOIC（0.295"，7.50mm 宽） | ￥7.9500 | IC RTC 3V 64-BIT Y2KC IND 24SOIC | 购买 |
| DS1685EN-5+ | 41 | Maxim Integrated Products | 19+ | 24-TSSOP（0.173"，4.40mm 宽） | ￥7.9800 | IC RTC 5V 64BIT Y2KC IND 24TSSOP | 购买 |
| DS3231M+ | 85 | Maxim Integrated Products | 19+ | 16-SOIC（0.295"，7.50mm 宽） | ￥8.6600 | IC REAL TIME CLOCK I2C 16SOIC | 购买 |
| DS1670S+ | 56 | Maxim Integrated Products | 19+ | 20-SOIC（0.295"，7.50mm 宽） | ￥10.9200 | IC CTRLR SYSTEM PORTABLE 20SOIC | 购买 |
| DS1501WZN+ | 29 | Maxim Integrated Products | 19+ | 28-SOIC（0.295"，7.50mm 宽） | ￥13.5900 | IC RTC WDOG Y2KC 3.3V 28-SOIC | 购买 |
| DS1501WEN+ | 69 | Maxim Integrated Products | 19+ | 28-TSSOP（0.465"，11.8mm 宽） | ￥14.9300 | IC RTC WDOG Y2K 3.3V IND 28-TSOP | 购买 |
| DS17885S-5+ | 61 | Maxim Integrated Products | 19+ | 24-SOIC（0.295"，7.50mm 宽） | ￥19.9200 | IC RTC 5V 8K NV RAM 24-SOIC | 购买 |
| DS1315E-5+ | 75 | Maxim Integrated Products | 19+ | 20-TSSOP（0.173"，4.40mm 宽） | ￥20.4600 | IC TIME CHIP PHANTOM 5V 20-TSSOP | 购买 |
| DS1554WP-120IND+ | 99 | Maxim Integrated Products | 19+ | 34-PowerCap? 模块 | ￥22.3000 | IC RTC RAM Y2K 3.3V 120NS 34-PCM | 购买 |
| DS17887-3+ | 33 | Maxim Integrated Products | 19+ | 24-DIP 模块（0.600"，15.24mm） | ￥25.2200 | IC RTC 3V 8K NV RAM 24-EDIP | 购买 |
| DS1742W-150+ | 36 | Maxim Integrated Products | 19+ | 24-DIP 模块（0.600"，15.24mm） | ￥26.1100 | IC RTC RAM Y2K 3.3V 150NS 24EDIP | 购买 |
