
IDT
TM
Programmable Timing Control Hub
TM
for P4
TM
460J—01/25/10
ICS950201
Programmable Timing Control Hub
TM
for P4
TM
9
Electrical Characteristics - CPU 0.7V Current Mode Differential Pair
T
A
= 0 - 70°C; V
DD
= 3.3 V +/-5%; C
L
=2pF
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
Current Source Output
Impedance
Zo
1
V
O
= V
x
3000
Ω
1
Voltage High VHigh 660 770 850 1
Voltage Low VLow -150 5 150 1
Max Volta
e Vovs 756 1150 1
Min Volta
e Vuds -300 -7 1
Crossin
Volta
e (abs) Vcross(abs) 250 350 550 mV 1
Crossing Voltage (var) d-Vcross
Variation of crossing over all
ed
es
12 140 mV 1
Lon
Accurac
ppm see Tperiod min-max values -300 300 ppm 1,2
200MHz nominal 4.9985 5.0015 ns 2
200MHz spread 4.9985 5.0266 ns 2
166.66MHz nominal 5.9982 6.0018 ns 2
166.66MHz spread 5.9982 6.0320 ns 2
133.33MHz nominal 7.4978 7.5023 ns 2
133.33MHz spread 7.4978 5.4000 ns 2
100.00MHz nominal 9.9970 10.0030 ns 2
100.00MHz spread 9.9970 10.0533 ns 2
200MHz nominal 4.8735 ns 1,2
166.66MHz nominal/spread 5.8732 ns 1,2
133.33MHz nominal/spread 7.3728 ns 1,2
100.00MHz nominal/spread 9.8720 ns 1,2
Rise Time t
r
V
OL
= 0.175V, V
OH
= 0.525V 175 332 700 ps 1
Fall Time t
f
V
OH
= 0.525V V
OL
= 0.175V 175 344 700 ps 1
Rise Time Variation d-t
r
30 125 ps 1
Fall Time Variation d-t
f
30 125 ps 1
Duty Cycle d
t3
Measurement from differential
wavefrom
45 49 55 % 1
Skew t
sk3
V
= 50% 8 100 ps 1
Jitter, Cycle to cycle t
jcyc-cyc
Measurement from differential
wavefrom
60 150 ps 1
1
Guaranteed b
desi
n, not 100% tested in production.
2
All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at
14.31818MHz
TperiodAverage period
Absolute min period T
absmin
Statistical measurement on
single ended signal using
oscilloscope math function.
mV
Measurement on single ended
si
nal usin
absolute value.
mV