CY28401 Datasheet, PDF (11/13 Pages) Cypress Semiconductor – 100-MHz Differential Buffer for PCI Express and SATA

CY28401
AC Electrical Specifications (continued)
Parameter
Description
Condition
V_LOW
Voltage Low
Measured SE
V_OX
Crossing Point Voltage at 0.7V Swing
'V_OX
Vcross Variation over all edges
V_OVS
Maximum Overshoot Voltage
V_UDS
Minimum Undershoot Voltage
V_RB
Ring Back Voltage
Measured SE
t_PD(PLL) Input to output skew in PLL mode
Measured at crossing point V_OX
t_PD(NONPLL) Input to output skew in Non–PLL mode Measured at crossing point V_OX
Min.
–150
250
–
–
–
0.2
–
2.5
Max. Unit
–
mv
550 mv
140 mV
V_HIGH + 0.3 V
–0.3 V
N/A V
±250 ps
6.5 ns
D IF T
:
T _PCB
   :
M easurem ent
P o in t
2pF
D IF C
IR E F
:
T _PCB
   :
M easurem ent
P o in t
2pF
:
T ra c e Im p e d a n c e M e a s u re d D iffe re n tia lly
Figure 8. Differential Clock Termination
Switching Waveforms
V_OH = 0.525V
VCROSS
TRise (CLOCK)
CLOCK#
CLOCK
V_OL = 0.175V
TFall (CLOCK)
Figure 9. Single-Ended Measurement Points for TRise and TFall
Rev 1.0, November 21, 2006
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