CY28404 Cypress Semiconductor, CY28404 Datasheet - Page 18

• Manufacturer Part Number: CY28404
• Description: CK409-COMPLIANT CLOCK SYNTHESIZER
• Manufacturer: Cypress Semiconductor

Document #: 38-07510 Rev. *B
Test and Measurement Set-up
For Differential CPU and SRC Output Signals
The following diagram shows lumped test load configurations
for the differential Host Clock Outputs.
Table 11.CPU Clock Current Select Function
Ordering Information
CY28404OC
CY28404OCT
Lead Free
CY28404OXC
CY28404OXCT
Board Target Trace/Term Z
Part Number
Figure 9. Lumped Load For Single-Ended Output Signals (for AC Parameters Measurement)
50 Ohms
2 .4 V
1 .5 V
0 .4 V
IR E F
C P U C
C P U T
T r
4 7 5 Ω
-
48-pin Shrunk Small Outline package (SSOP)
48-pin Shrunk Small Outline package (SSOP) – Tape and Reel
48-pin Shrunk Small Outline package (SSOP)
48-pin Shrunk Small Outline package (SSOP) – Tape and Reel
3 3 Ω
3 3 Ω
3 .3 V
3 .3 V s ig n a l s
Figure 8. 0.7V Load Configuration
Reference R, I
4 9 .9 Ω
R
4 9 .9 Ω
tD C
REF
T f
= 475 1%, I
T
T
P C B
P C B
Package Type
REF
0 V
REF
– V
DD
= 2.32mA
(3*R
-
O u tp u t u n d e r T e s t
2 p F
2 p F
REF
M e a s u re m e n t
M e a s u re m e n t
)
P o in t
P o in t
P r o b e
Output Current
L o a d C a p
I
OH
= 6*I
REF
Commercial, 0° to 70°C
Commercial, 0° to 70°C
Commercial, 0° to 70°C
Commercial, 0° to 70°C
Product Flow
CY28404
Page 18 of 20
0.7V @ 50
V
OH
@ Z