CY28401 Cypress Semiconductor, CY28401 Datasheet - Page 11

• Manufacturer Part Number: CY28401
• Description: 100-MHz Differential Buffer for PCI Express and SATA
• Manufacturer: Cypress Semiconductor

Document #: 38-07592 Rev. **
AC Electrical Specifications
Switching Waveforms
Parameter
V
V
V
∆V
V
V
V
t
t
PD(PLL)
PD(NONPLL)
HIGH
LOW
OX
OVS
UDS
RB
OX
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
Input to output skew in PLL mode
Input to output skew in Non–PLL mode Measured at crossing point V
V
OH
V
OL
= 0.525V
VCROSS
= 0.175V
IR E F
Description
D IF C
D IF T
Figure 9. Single-Ended Measurement Points for TRise and TFall
4 7 5 Ω
(continued)
3 3 Ω
3 3 Ω
Figure 8. 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 SE
Measured SE
Measured at crossing point V
T
T
P C B
P C B
TRise (CLOCK)
TFall (CLOCK)
Condition
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
P o in t
P o in t
–150
Min.
660
250
0.2
2.5
–
–
–
–
V
CY28401
HIGH
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Max.
±250
–0.3
850
140
N/A
550
6.5
–
+ 0.3
Unit
mV
mv
mv
mv
ps
ns
V
V
V