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
MI
N
DELAY
(STEP
ZERO)
MAX
DELAY
PARALLEL
PO
RT
S
E
RIAL
PO
RT
00
0
1
P7
MSB
00
0
1
P6
BINARY
PROGRAMMED
VALUE
00
0
1
P5
00
0
1
P4
00
0
1
P3
00
0
1
P2
00
1
0
1
P1
PART
NUMBER
01
0
1
0
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.
DS1021
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