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TE Connectivity, Ltd.
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Part No. |
DS1693
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OCR Text |
...-on from date/time alarm or key closure automatic battery backup and write protection to external sram crystal select bit allows rtc to operate with 6 pf or 12.5 pf crystal 114 bytes user nv ram auxiliary battery input ... |
Description |
3-Volt/5-Volt Serialized Real-Time Clock with NV RAM Control
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File Size |
324.09K /
32 Page |
View
it Online |
Download Datasheet
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NTE[NTE Electronics]
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Part No. |
NTE1690
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OCR Text |
...on row and column inputs. A key closure is recognized when a single row and a single column are connected to VSS, which starts the oscillator and initiates tone generation. Negative-true logic signals simulating key closures can also be use... |
Description |
Integrated Circuit Telephone DTMF Dialer
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File Size |
30.88K /
4 Page |
View
it Online |
Download Datasheet
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Price and Availability
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