CDP1855 View Datasheet(PDF) - Intersil
Part Name
Description
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CDP1855 Datasheet PDF : 15 Pages
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CDP1855, CDP1855C
Dynamic Electrical Specifications At TA = -40 to +85oC, VDD ±5%, tR, tF = 20ns, VIH = 0.7VDD, VIL = 0.3VDD,
CL = 100pF (See Figure 7)
LIMITS
CDP1855
CDP1855C
(NOTE 1)
PARAMETER
VDD
(V)
(NOTE 2)
MIN
TYP
MAX
(NOTE 2)
MIN
TYP
MAX
UNITS
OPERATION TIMING
Maximum Clock Frequency
(Note 3)
5
3.2
4
10
6.4
8
-
3.2
4
-
-
-
-
MHz
-
MHz
Maximum Shift Frequency
(1 Device) (Note 4)
5
1.6
2
10
3.2
4
-
1.6
2
-
-
-
-
MHz
-
MHz
Minimum Clock Width
tCLK0
5
-
tCLK1
10
-
100
150
-
50
75
-
100
150
ns
-
-
ns
Minimum Clock Period
tCLK
5
-
10
-
250
312
-
125
156
-
250
312
ns
-
-
ns
Clock to Shift Propagation
tCSH
5
-
Delay
10
-
200
300
-
100
150
-
200
300
ns
-
-
ns
Minimum C.I. to Shift Setup
tSU
5
-
10
-
50
67
-
25
33
-
50
67
ns
-
-
ns
C.O. from Shift Propagation
tPLH
5
-
Delay
tPHL
10
-
450
600
-
225
300
-
450
600
ns
-
-
ns
Minimum C.I. from Shift Hold
tH
5
-
10
-
50
75
-
25
40
-
50
75
ns
-
-
ns
Minimum Register Input
Setup
tSU
5
-
10
-
-20
10
-
-10
10
-
-20
10
ns
-
-
ns
Register after Shift Delay
tPLH
5
-
tPHL
10
-
400
600
-
200
300
-
400
600
ns
-
-
ns
Minimum Register after Shift
tH
5
-
Hold
10
-
50
100
-
25
50
-
50
100
ns
-
-
ns
C.O. from C.I. Propagation
tPLH
5
-
Delay
tPHL
10
-
100
150
-
50
75
-
100
150
ns
-
-
ns
Register from C.I.
Propagation Delay
tPLH
5
-
tPHL
10
-
80
120
-
40
60
-
80
120
ns
-
-
ns
NOTES:
1. Maximum limits of minimum characteristics are the values above which all devices function.
2. Typical values are for TA = 25oC and nominal voltages.
3. Clock frequency and pulse width are given for systems using the internal clock option of the CDP1855. Clock frequency equals shift
frequency for systems not using the internal clock option.
4. Shift period for cascading of devices is increased by an amount equal to the C.I. to C.O. Propagation Delay for each device added.
4-58
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