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2 pcs
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2 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The Dallas Semiconductor DS1287A is a clock chip commonly found in vintage computer motherboards. This component is noted for its RoHS3 compliance and Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life under dry conditions. The REACH status is unaffected.
Discussions around the DS1287 and its variant, the DS1287A, highlight differences such as the RAM clear pin present on the DS1287A. While the DS1287 has been discontinued for many years, the DS1287A offers a degree of backward compatibility for older designs. Users often seek these chips for restoring or modifying vintage computer hardware, sometimes involving battery modifications for extended use.
While the DS1287A is categorized under Voltage Regulators - Linear Regulator Controllers, its primary function is as a Real-Time Clock (RTC) with integrated RAM. Its application is specific to older computing platforms where such integrated clock solutions were standard.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.30 | $0.30 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The DS1287A is RoHS3 Compliant.
The MSL for the DS1287A is 1 Unlimited.
The DS1287A is REACH Unaffected.
The DS1287A has a RAM clear pin (pin 21), whereas the DS1287 has NC (No Connect) on the same pin.
The DS1287A is generally backward compatible with older designs using the DS1287, though not always 100%.