| Picture | ES Part No. | Part No | Stock | Price | Datasheet | Pb Free | RoHS | Description | Vendor | Package / Case | Packaging |
| | | | | | | | | | | |
 | 0067-0009-4 | DS12C887+ | 0 | 446.50 |  | PB-Free | RoHS | Real Time Clock, 114 Bytes RAM Parallel/Multiplexer | DALLAS/MAXIM | EPDIP-24 | TUBE |
 | 0067-0090-3 | DS3231SN#-T/R | 0 | 182.50 | | PB-Free | RoHS | RTC Extremely Accurate I2C-Integrate RTC/TCXO/CRYSTAL | DALLAS/MAXIM | SOIC-16 | TAPE & REEL |
| 0126-0181-8 | DS3231SN#T&R | 3,008 | 142.40 | | PB-Free | RoHS | Extremely Accurate I2C Real-Time Clock (RTC), Integrated Temperature-Compensated Crystal Oscillator (TCXO) and Crystal | MAXIM INTEGRATED | SOIC-16 | TAPE & REEL |
 | 0057-0145-3 | RX8900SA:UA3 PURE SN | 0 | 138.30 | | PB-Free | RoHS | Real Time Clock Module, Built-In Frequency Adjusted 32.768kHz Crystal Unit/DTCXO/Backup Switchover Circuit, I2C-Bus Interface | EPSON | SOIC-14 | TAPE & REEL |
 | 0067-0062-7 | DS1307+ | 0 | 118.20 | | PB-Free | RoHS | 64x8 Serial Real Time Clock, 56 Bytes RAM 2-Wire Serial | DALLAS/MAXIM | PDIP-8 | TUBE |
 | 0035-1813-8 | MCP7940NT-I/SN | 2,920 | 74.40 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock/Calendar(RTCC) with SRAM 64Bytes | MICROCHIP | SOIC-8 | TAPE & REEL |
| 0067-0112-5 | DS1307N+ | 0 | 73.82 | | PB-Free | RoHS | 64 x 8, Serial, I2C Real-Time Clock, 56 Bytes of NV SRAM | DALLAS/MAXIM | PDIP-8 | TUBE |
 | 0223-0037-8 | X1228S14-4.5A | 17 | 66.14 | | PB-Free | | Real Time Clock/Calendar/CPU Supervisor with EEPROM, 512x 8 Bit, I2C Interface Battery Switch or Super Cap Input | INTERSIL/RENESAS | SOIC-14 | TUBE |
| 0223-0039-4 | ISL12028IBZ | 1,137 | 63.24 | | PB-Free | | Real Time Clock/Calendar with EEPROM Automatic Backup to Battery or SuperCap | INTERSIL/RENESAS | SOIC-14 | TUBE |
| 0035-1444-3 | MCP79411-I/SN | 176 | 57.93 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock/Calendar with SRAM 64 Bytes, 1 Kbit EEPROM, Protected EEPROM, with EUI-48 MAC Address | MICROCHIP | SOIC-8 | TUBE |
 | 0057-0169-7 | X1B000371000214 | 1,000 | 56.10 | | PB-Free | RoHS | Real Time Clock Module, RX8804CE XB, Built-In DTCXO, with Internal State Output Function, 1 Time Stamp, Frequency Stability ±8ppm, I2C-Bus | EPSON | SMD-10 | TAPE & REEL |
| 1522-0207-7 | MCP79411T-I/SN | 1,000 | 54.48 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock/Calendar with SRAM 64 Bytes, 1 Kbit EEPROM, Protected EEPROM, with EUI-48 MAC Address | MICROCHIP | SOIC-8 | TAPE & REEL |
| 0067-0060-1 | DS1302+ | 433 | 52.26 | | PB-Free | RoHS | Real Time Clock, 31 Bytes RAM, 3-Wire Serial, Trickle Charge Timekeeping Chip, 8PIN DIP (300-mil) | DALLAS/MAXIM | PDIP-8 | TUBE |
| 0035-1443-0 | MCP7940N-I/SN | 3,316 | 52.13 | | PB-Free | RoHS | Battery-Backed I2C Real Time Clock/Calendar with SRAM 64 Bytes, Vcc = 1.8V to 5.5V | MICROCHIP | SOIC-8 | TUBE |
| 0057-0168-5 | X1B000301000214 | 995 | 50.93 | | PB-Free | RoHS | Real Time Clock Module, RX8900CE UB, Built-In DTCXO,with Auto Power Switching/Temperature Sensor Function, Frequency Stability ±5ppm, I2C-Bus | EPSON | SMD-10 | TAPE & REEL |
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