W320-04
-
Switching Characteristics
[9]
Over the Operating Range
Parameter
t
1
t
3
t
3
t
5
t
5
t
6
t
7
t
9
t
9
t
9
t
9
t
2
t
3
t
4
t
8
V
oh
V
ol
V
crossover
t
2
t
3
t
4
t
8
All
USB, REF,
DOT
PCI,3V66
3V66[0:1]
66BUFF[0:2]
PCI
3V66, PCI
3V66
USB, DOT
PCI
REF
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
CPU
V
oh
V
ol
V
crossover
CPU
CPU
CPU
Output
Description
Output Duty Cycle
[10]
Falling Edge Rate
Falling Edge Rate
3V66-3V66 Skew
66BUFF-66BUFF Skew
PCI-PCI Skew
3V66-PCI Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Rise Time
Fall Time
CPU-CPU Skew
Cycle-Cycle Clock Jitter
Rise/Fall Matching
High-level Output Voltage
including overshoot
Low-level Output Voltage
including undershoot
Crossover Voltage
Rise Time
Fall Time
CPU-CPU Skew
Cycle-Cycle Clock Jitter
Rise/Fall Matching
High-level Output Voltage
Including Overshoot
Low-level Output Voltage
Including Undershoot
Crossover Voltage
Test Conditions
Measured at 1.5V
Between 2.4V and 0.4V
Between 2.4V and 0.4V
Measured at 1.5V
Measured at 1.5V
Measured at 1.5V
3V66 leads. Measured at 1.5V
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured at 1.5V t
9 =
t
9A
– t
9B
Measured differential waveform from
–0.35V to +0.35V
Measured differential waveform from
–0.35V to +0.35V
Measured at Crossover
Measured at Crossover t
8 =
t
8A
– t
8B
Measured with test loads
[13]
Measured with test loads
[12]
Measured with test loads
[12]
Measured with test loads
[12]
Measured single ended waveform
from 0.175V to 0.525V
Measured single ended waveform
from 0.175V to 0.525V
Measured at Crossover
Measured at Crossover t
8 =
t
8A
– t
8B
With all outputs running
Measured with test loads
[11,
12]
Measured with test loads
[12]
Measured with test loads
[12]
Measured with test loads
[12]
0.28
0.92
–0.2
0.51
175
175
175
175
1.5
Min.
45
0.5
1.0
Max.
55
2.0
4.0
500
175
500
3.5
250
350
500
1000
467
467
150
150
325
1.45
0.35
0.76
700
700
150
150
20
0.85
–0.15
0.43
Unit
%
ns
V/ns
ps
ps
ps
ns
ps
ps
ps
ps
ps
ps
ps
ps
mV
V
V
V
ps
ps
ps
ps
%
V
V
V
CPU 1.0V Switching Characteristics
CPU 0.7V Switching Characteristics
Notes:
9. All parameters specified with loaded outputs.
10. Duty cycle is measured at 1.5V when V
DD
= 3.3V. When V
DD
= 2.5V, duty cycle is measured at 1.25V.
11. Determined as a fraction of 2*(Trp – Trn)/(Trp +Trn) Where Trp is a rising edge and Trp is an intersecting falling edge.
12. The 0.7V test load is R
s
= 33.2 ohm, R
p
= 49.9 ohm in test circuit.
13. The 1.0V test load is shown on the test circuit page.
Document #: 38-07010 Rev. *B
Page 8 of 18
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