VERIFIED CROSS-REFERENCE
DS1307 alternatives & equivalent parts
I2C (2-wire) BCD real-time clock/calendar; 56-byte battery-backed NV SRAM; programmable square-wave output; automatic power-fail switchover to VBAT; 4.5-5.5 V — common packages: 8-PDIP (300 mil); SOIC version ordered as DS1307Z. Each candidate below cites its manufacturer datasheet; check the relationship badge before substituting.
4 verified alternatives for DS1307
| Alternative | Manufacturer | Relationship | Key differences | Source |
|---|---|---|---|---|
| DS1307+ | Analog Devices | Pin-to-pinDrop-in: same footprint and pinout. | Same 8-PDIP, 5 V, commercial 0C to +70C lead-free device per the official ADI ordering table; third-party mirror of official datasheet. | ADI 官方页面 |
| DS1307N+ | Analog Devices | Pin-to-pinDrop-in: same footprint and pinout. | Same 8-PDIP and 5 V; industrial -40C to +85C per the official ADI ordering table; third-party mirror of official datasheet. | ADI 官方页面 |
| DS1338Z-33+ | Analog Devices | FunctionalSame function: board or design change needed. | 8-SOIC, not PDIP: pin-to-pin only against the SOIC DS1307Z variant; 3.0-5.5 V operation with 1.3-3.7 V battery backup range; Same 56-byte SRAM and DS1307-style register concept; -40C to +85C. | ADI 官方页面 |
| PCF8563T/F4,118 | NXP Semiconductors | FunctionalSame function: board or design change needed. | Different pinout and I2C register map (address 0xA2); no 56-byte SRAM; No DS1307-style VBAT battery-backup pin; alarm, timer, and CLKOUT functions instead; 1.8-5.5 V, SOIC-8. | NXP 官方数据手册 |
Pre-replacement checklist
- Base DS1307 is the 5 V PDIP; SOIC builds are ordered as DS1307Z, not as DS1307.
- Requires an external 32.768 kHz crystal on X1/X2; integrated-oscillator parts change the BOM.
- Firmware using the 56-byte NV SRAM or the 0xD0 register map cannot move to PCF8563.
Need the exact lot, date code or a second source quoted?
Send the original MPN and the approved alternative. Sourceics reconfirms source, stock, date code and commercial terms before any order — no substitution without your engineering approval.
Request a quote for DS1307Source part reference: ADI 官方页面. Equivalence notes are reference guidance, not a guarantee of fit — always verify against your schematic and layout.