CDC329 Datasheet, PDF (5/6 Pages) Texas Instruments – 1-LINE TO 6-LINE CLOCK DRIVER WITH SELECTABLE POLARITY

A
1T/C
1Y1
tPLH1
1Y2
tPLH2
2T/C
CDC329
1-LINE TO 6-LINE CLOCK DRIVER
WITH SELECTABLE POLARITY
SCBS117A–D4501, JANUARY 1991–REVISED NOVEMBER 1992
WAVEFORMS FOR CALCULATION OF t_sk(o)
tPHL1
tPHL2
tPLH5
tPLH6
tPHL5
tPHL6
2Y1
tPLH3
tPHL3
tPHL7
tPLH7
2Y2
tPLH4
tPHL4
tPHL8
tPLH8
Output skew, tsk(o), from A to any Y (same phase), can be measured only between outputs for which the respective polarity control inputs (T/C)
are at the same logic level. It is calculated as the greater of:
a) the difference between the fastest and slowest of tPLH from A↑ to any Y
(e.g., tPLHn, n = 1 to 4; or tPLHn, n = 5 to 6),
b) the difference between the fastest and slowest of tPHL from A↓ to any Y
(e.g., tPHLn, n = 1 to 4; or tPHLn, n = 5 to 6),
c) the difference between the fastest and slowest of tPLH from A↓ to any Y
(e.g., tPLHn, n = 7 to 8), and
d) the difference between the fastest and slowest of tPHL from A↑ to any Y
(e.g., tPHLn, n = 7 to 8).
Output skew, tsk(o), from A to any Y (any phase), can be measured between outputs for which the respective polarity control inputs (T/C) are at
the same or different logic levels. It is calculated as the greater of:
a) the difference between the fastest and slowest of tPLH from A↑ to any Y or tPHL from A↑ to any Y
(e.g., tPLHn, n = 1 to 4; or tPLHn, n = 5 to 6, and tPHLn, n = 7 to 8), and
b) the difference between the fastest and slowest of tPHL from A↓ to any Y or tPLH from A↓ to any Y
(e.g., tPHLn, n = 1 to 4; or tPHLn, n = 5 to 6, and tPLHn, n = 7 to 8).
Figure 2. Skew Waveforms and Calculations
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