DS1021

4 of 9

CASCADING MULTIPLE DEVICES (DAISY CHAIN) Figure 3

PART NUMBER TABLE Table 1

DELAYS AND TOLERANCES (IN ns)

PART NUMBER

STEP ZERO

DELAY TIME

MAX DELAY

TIME (NOM)

DELAY CHANGE

PER STEP (NOM)

MAX DEVIATION FROM

PROGRAMMED DELAY

DS1020-25

10 ± 2

73.75

0.25

±6

DS1020-50

10 ± 2

137.5

0.5

±8

DELAY VS. PROGRAMMED VALUE Table 2

00

0

0

0

0

1

1

1

P7

MSB

00

0

0

0

0

1

1

1

P6

BINARY

PROGRAMMED

VALUE

00

0

0

0

0

1

1

1

P5

00

0

0

0

0

1

1

1

P4

00

0

0

0

0

1

1

1

P3

00

0

0

1

1

1

1

1

P2

00

1

1

0

0

0

1

1

P1

PART

NUMBER

01

0

1

0

1

1

0

1

P0

LSB

DS1021-25

10.00

10.25

10.50

10.75

11.00

11.25

73.25

73.50

73.75

DS1021-50

10.0

10.5

11.0

11.5

12.0

12.5

136.5

137.0

137.5

All delays in nanoseconds, referenced to input pin.

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DS1021

DS1021

DS1021

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