CY28349 SpectraLinear, CY28349 Datasheet - Page 16

• Manufacturer Part Number: CY28349
• Description: FTG
• Manufacturer: SpectraLinear

www.DataSheet4U.com
Rev 1.0, November 24, 2006
-
Switching Characteristics
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
V
V
V
Notes:
1
2
2
2
3
3
3
4
5
6
7
8
9
9
9
9
Parameter
3. All parameters specified with loaded outputs.
4. Duty cycle is measured at 1.5V when V
5. Determined as a fraction of 2*(Trp – Trn)/(Trp +Trn) Where Trp is a rising edge and Trn is an intersecting falling edge.
6. The test load is R
oh
ol
crossover
All
CPU
48MHz, REF
PCI, 3V66,
CPU
48MHz, REF
PCI, 3V66
CPU
3V66 [0:1]
PCI
3V66,PCI
CPU
3V66
48MHz
PCI
REF
CPU, PCI
CPU
CPU
CPU
CPU
CPU
CPU
s
= 33.2 , R
Output
p
= 49.9 in test circuit.
Output Duty Cycle
Rise Time
Rising Edge Rate
Rising Edge Rate
Fall Time
Falling Edge Rate
Falling Edge Rate
CPU-CPU Skew
3V66-3V66 Skew
PCI-PCI Skew
3V66-PCI Clock Skew
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Cycle-Cycle Clock Jitter
Settle Time
Rise/Fall Matching
Overshoot
Undershoot
High-level Output Voltage
Low-level Output Voltage
Crossover Voltage
[3]
DD
= 3.3V. When V
Over the Operating Range
Description
DD
[4]
= 2.5V, duty cycle is measured at 1.25V.
t
Measured at 20% to 80% of V
Between 0.4V and 2.4V
Between 0.4V and 2.4V
Measured at 80% to 20% of V
Between 2.4V and 0.4V
Between 2.4V and 0.4V
Measured at Crossover
Measured at 1.5V
Measured at 1.5V
3V66 leads. Measured at 1.5V
Measured at Crossover t
With all outputs running
Measured at 1.5V t
Measured at 1.5V t
Measured at 1.5V t
Measured at 1.5V t
CPU and PCI clock stabilization from
power-up
Measured with test loads
Measured with test loads
Measured with test loads
Measured with test loads
Measured with test loads
Measured with test loads
1A
/(t
1B
)
Test Conditions
9 =
9 =
9 =
9 =
t
t
t
t
9A
9A
9A
9A
8 =
[5, 6]
[6]
[6]
[6]
[6]
[6]
– t
– t
– t
– t
t
9B
9B
9B
9B
8A
oh
oh
– t
8B
45
175
0.5
1.0
175
0.5
1.0
1.5
–0.2
0.65
0.0
45%
of
0.65
Min.
CY28349
55
700
2.0
4.0
700
2.0
4.0
150
500
500
3.5
200
250
350
500
1000
3
20%
V
0.2
0.74
0.05
55% of
0.74
Page 16 of 20
Max.
oh
+
%
ps
V/ns
V/ns
ps
V/ns
V/ns
ps
ps
ps
ns
ps
ps
ps
ps
ps
ms
V
V
V
V
V
Unit