Datasheet

DS1321
13 of 13
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reserves the right to change the circuitry and specifications without notice at any time.
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DATA SHEET REVISION SUMMARY
The following represent the key differences between 03/26/96 and 06/12/97 version of the DS1321 data
sheet. Please review this summary carefully.
1. Changed I
CCO1
from 200 to 185 mA max
2. Changed I
CCO2
from 350 to 260 mA max
3. Changed V
BTP
from 2.55 - 2.65V to 2.50 - 2.70V
4. Changed R
IM
from 1.0 typ to 1.2 MΩ and 1.4 max to 1.5 MΩ
5. Changed t
PD
from 5 typ, 15 max to 12 typ, 20 max
6. Changed t
RPO
units from ns to µs
7. Changed block diagram to show U.L. compliance
The following represent the key differences between 06/12/97 and 09/29/97 version of the DS1321 data
sheet. Please review this summary carefully.
1. Changed AC test conditions
The following represent the key differences between 09/29/97 and 12/12/97 version of the DS1321 data
sheet. Please review this summary carefully.
1. Removed preliminary from title bar.
2. Specified which inputs and outputs are relevant for C
IN
and C
OUT
specs. This is not a change, just
a clarification.
The following represent the key differences between 12/12/97 and 6/12 version of the DS1321 data sheet.
Please review this summary carefully.
1. Replace logo and clarify package types.
2. Update ordering, soldering, and package information; add package thermal data.