FS6158-01 Ver la hoja de datos (PDF) - AMI Semiconductor
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FS6158-01 Datasheet PDF : 14 Pages
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FS6158-01
Two-Way/Four Way Motherboard Clock Generator/Buffer IC
Table 15: AC Timing Specifications, continued
Unless otherwise stated, all power supplies = 3.3V, no load on any output, and ambient temperature TA = 25°C. Parameters denoted with an asterisk ( * ) represent nominal characterization data and
are not currently production tested to any specific limits. MIN and MAX characterization data are ± 3σ from typical. Spread spectrum modulation is disabled except for Rise/Fall time measurements.
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
MIN.
TYP. MAX. UNITS
66REF Reference Clock Output
Duty Cycle *
Jitter, Long Term (σy(τ)) *
Jitter, Period (peak-peak) *
Rise Time *
Fall Time *
14REF Reference Clock Output
Duty Cycle *
Jitter, Long Term (σy(τ)) *
Jitter, Period (peak-peak) *
Rise Time *
Fall Time *
dt
Ratio of high pulse width to one clock period,
measured at 1.5V
45
tj(LT)
On rising edges 500µs apart at 1.5V relative to an
ideal clock, CL=20pF
tj(∆P)
From rising edge to rising edge at 1.5V, CL=20pF
tr min
Measured @ 0.4V – 2.4V; CL=10pF
0.5
tr max
Measured @ 0.4V – 2.4V; CL=20pF
tf min
Measured @ 2.4V – 0.4V; CL=10pF
0.5
tf max
Measured @ 2.4V – 0.4V; CL=20pF
dt
Ratio of high pulse width to one clock period,
measured at 1.5V
45
tj(LT)
On rising edges 500µs apart at 1.5V relative to an
ideal clock, CL=20pF
tj(∆P)
From rising edge to rising edge at 1.5V, CL=20pF
tr min
Measured @ 0.4V – 2.4V; CL=10pF
0.5
tr max
Measured @ 0.4V – 2.4V; CL=20pF
tf min
Measured @ 2.4V – 0.4V; CL=10pF
0.5
tf max
Measured @ 2.4V – 0.4V; CL=20pF
55
%
ps
ps
ns
2.0
ns
2.0
55
%
ps
ps
ns
2.0
ns
2.0
Figure 5: DC Measurement Points
VOH = 2.4V
VOL = 0.4V
3.3V
VIH = 2.0V
VIL = 0.8V
Figure 7: HOST Clock Measurement Point
HOST_P
VX
HOST_N
Figure 6: Timing Diagram
tr
tf
3.3V
2.4V
1.5V
0.4V
dt
Figure 8: HOST Clock Test Point
From output
under test
Test node
RS
RP
ISO9001
10
2.26.02
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