cy28800 Cypress Semiconductor Corporation., cy28800 Datasheet - Page 12

• Manufacturer Part Number: cy28800
• Description: 100-mhz Differential Buffer For Pci Express And Sata
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-07723 Rev *B
AC Electrical Specifications
Parameter
∆V
V
T
V
V
T
T
DIF at 0.7V
F
F
T
T
T
T
∆T
V
V
V
∆V
V
V
V
T
T
T
STABLE
DC
RFM
IN
ERROR
DC
PERIOD
R
RFM
CCJ
SKEW
PD
RB
MAX
MIN
HIGH
LOW
OX
OVS
UDS
RB
R
OX
OX
/ T
/∆T
F
F
Vcross Variation over all edges
Differential Ringback Voltage
Time before ringback allowed
Absolute maximum input voltage
Absolute minimum input voltage
DIFT and DIFC Duty Cycle
Rise/Fall Matching
Input Frequency
Input/Output Frequency Error
DIFT and DIFC Duty Cycle
Average Period
DIFT and DIFC Rise and Fall Times
Rise/Fall Matching
Rise and Fall Time Variation Variation
Voltage High
Voltage Low
Crossing Point Voltage at 0.7V Swing
Vcross Variation over all edges
Maximum Overshoot Voltage
Minimum Undershoot Voltage
Ring Back Voltage
Cycle to Cycle Jitter
Any DIFT/C to DIFT/C Clock Skew
Input to output skew in PLL mode
Input to output skew in Non-PLL mode Measured at crossing point V
IR E F
Description
D IF C
D IF T
4 7 5 Ω
(continued)(Measured in High Bandwidth Mode)
3 3 Ω
3 3 Ω
Figure 12. Differential Clock Termination
T r a c e Im p e d a n c e M e a s u r e d D if f e r e n tia lly
4 9 .9 Ω
4 9 .9 Ω
Measured SE
Measured at crossing point V
Determined as a fraction of
2 * (T
Bypass or PLL 1:1
Bypass or PLL 1:1
Measured at crossing point V
Measured at crossing point V
Single ended measurement: V
V
Determined as a fraction of
2 * (T
Single ended measurement: V
V
Measured SE
Measured SE
Measured SE
Measured SE
Measured SE
Measured SE
Measured SE
PLL Mode
Bypass Mode (Jitter is additive)
Measured at crossing point V
Measured at crossing point V
OH
OH
T
T
P C B
P C B
= 0.525V (Averaged)
= 0.525V (Real Time)
R
R
– T
– T
F
F
)/(T
)/(T
R
R
+ T
+ T
Condition
F
F
2 p F
2 p F
)
)
M e a s u r e m e n t
M e a s u r e m e n t
OX
OX
OX
OX
OX
OX
P o in t
P o in t
OL
OL
at 100 MHz
= 0.175 to
= 0.175 to
9.9970
–100
–150
Min.
–0.3
500
175
660
250
0.2
2.5
45
90
45
–
–
–
–
–
–
–
–
–
–
–
CY28800
10.0533
V
Page 12 of 16
Max.
HIGH
±250
1.15
–0.3
140
100
210
700
125
850
550
140
N/A
0.3
4.5
55
20
55
20
50
50
50
0
–
+
MHz
Unit
ppm
mV
mV
mV
mv
mv
mv
ns
ps
ns
ps
ps
ps
ps
ps
ps
%
%
%
%
V
V
V
V
V
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