mc145156 Lansdale Semiconductor, Inc., mc145156 Datasheet - Page 26

• Manufacturer Part Number: mc145156
• Description: Pll Frequency Synthesizer Family
• Manufacturer: Lansdale Semiconductor, Inc.

ML1451xx
Page 26 of 35
TIMING REQUIREMENTS
Symbol
t w(H)
OUTPUT
t rec
t r , t f
f clk
t su
t su
t h
*Assumes 25% Duty Cycle.
CLK,
ENB
ANY
t r
Serial Data Clock Frequency, Assuming 25% Duty Cycle
NOTE: Refer to CLK t w(H) below
Minimum Setup Time, Data to CLK
Minimum Hold Time, CLK to Data
Minimum Setup Time, CLK to ENB
Minimum Recovery Time, ENB to CLK
Minimum Pulse Width, CLK and ENB
Maximum Input Rise and Fall Times – Any Input
(Figure 6)
(Figure 7)
(Figure 7)
(Figure 7)
(Figure 7)
(Figure 6)
(Figure 8)
10%
50%
90%
(Input t r = t f = 10 ns unless otherwise indicated)
Figure 6.
Figure 8.
t w(H)
4 f clk
1 *
Parameter
t f
SWITCHING WAVEFORMS
www.lansdale.com
– V DD
V SS
– V DD
V SS
V DD
DATA
ENB
CLK
V
3
5
9
3
5
9
3
5
9
3
5
9
3
5
9
3
5
9
3
5
9
t su
Guaranteed Limit
50%
50%
DC to 5.0
DC to 7.1
DC to 10
25 C
t su
LAST
30
20
18
40
20
15
70
32
25
10
20
50
35
25
CLK
5
5
4
2
t h
50%
Figure 7.
LANSDALE Semiconductor, Inc.
PREVIOUS
LATCHED
Guaranteed Limit
DATA
– 40 to 85 C
DC to 3.5
DC to 7.1
DC to 10
t rec
30
20
18
40
20
15
70
32
25
10
20
70
35
25
5
5
4
2
FIRST
CLK
– V DD
– V DD
– V DD
MHz
Unit
V SS
V SS
V SS
ns
ns
ns
ns
ns
µs
Issue A