cy7b995ait Cypress Semiconductor Corporation., cy7b995ait Datasheet - Page 8

• Manufacturer Part Number: cy7b995ait
• Description: 2.5/3.3v 200-mhz High-speed Multi-phase Pll Clock Buffer
• Manufacturer: Cypress Semiconductor Corporation.

Switching Characteristics
Document #: 38-07337 Rev. *D
F
VCO
VCO
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes
SKEWPR
SKEW0
SKEW1
SKEW2
SKEW3
SKEW4
SKEW5
PART
PD0
ODCV
PWH
PWL
R
LOCK
CCJ
Parameter
11. These Inputs are normally wired to VDD, GND or unconnected. Internal termination resistors bias unconnected inputs to V
12. IF PD#/DIV is in HIGH level (R-reference divider = 1). Reference Input Frequency = F
13. Test Load = 20 pF, terminated to V
14. t
15. t
16. Lock detector circuit may be unreliable for input frequencies lower than 4 MHz, or for input signals which contain significant jitter.
OR
/t
F
Frequency = F
PD
LOCK
LR
LBW
is measured at 1.5V for V
is the time that is required before outputs synchronize to REF. This specification is valid with stable power supplies which are within normal operating limits.
Output frequency range
VCO Lock Range
VCO Loop Bandwidth
Matched-Pair Skew
Output-Output Skew
Output-Output Skew
Part-Part Skew
Ref to FB Propagation
Delay
Output Duty Cycle
Output High Time
Deviation from 50%
Output Low Time
Deviation from 50%
Output Rise/Fall Time
PLL Lock Time
Cycle-Cycle Jitter
REF
x2.
[14]
Description
DD
[15,16]
= 3.3V and at 1.25V for V
CC
/2. All outputs are equally loaded.
[13]
[13]
[13]
Skew between the earliest and the latest output
transitions within the same bank.
Skew between the earliest and the latest output
transitions among all outputs at 0t
Skew between the earliest and the latest output
transitions among all outputs for which the same
phase delay has been selected.
Skew between the nominal output rising edge to the
inverted output falling edge.
Skew between non-inverted outputs running at
different frequencies.
Skew between nominal to inverted outputs running at
different frequencies.
Skew between nominal outputs at different power
supply levels.
Skew between the outputs of any two devices under
identical settings and conditions (V
air flow, frequency, etc.).
Fout < 100 MHz, Measured at V
Fout > 100 MHz, Measured at V
Measured at 2.0V for V
= 2.5V.
Measured at 0.8V for V
= 2.5V.
Measured at 0.8V–2.0V for V
0.7V–1.7V for V
Divide by one output frequency, FS = L, FB = divide
by any.
Divide by one output frequency, FS = M/H, FB = divide
by any.
DD
= 2.5V with REF rise/fall times of 0.5 ns between 0.8V–2.0V.
DD
= 2.5V.
Condition
DD
DD
= 3.3V and at 1.7V for V
= 3.3V and at 0.7V for V
DD
REF.
DD
DD
= 3.3V and
IF PD#/DIV is in MID level (R-reference divider = 2). Reference Input
U
/2.
/2.
DDQ
.
, V
DD
, temp,
DD
DD
RoboClock
–250
0.25
0.15
Min
200
48
45
6
–
–
–
–
–
–
–
–
–
–
–
–
–
DD
/2.
Type
45
55
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
®
+250
Max
200
400
100
200
200
500
500
500
650
750
100
150
3.5
1.5
2.0
1.5
0.5
52
55
, CY7B995
Page 8 of 13
MHz
MHz
MHz
Unit
ms
ps
ps
ps
ps
ps
ps
ps
ps
ps
ns
ns
ns
ps
ps
%
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