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CSPT857DBVG

P1-P3P4-P6P7-P9P10-P12P13-P15
13
IDTCSPT857D
2.5V - 2.6V PLL DIFFERENTIAL 1:10 SDRAM CLOCK DRIVER
COMMERCIAL TEMPERATURE RANGE
Figure 8. Input and Output Slew Rates
Clock Inputs
and Outputs
80%
20%
V
ID, VOD
tR
tF
80%
20%
APPLICATION INFORMATION
Clock Loading on the PLL outputs (pF)
Clock Structure # of SDRAM Loads per Clock Min. Max.
#1 2 4 7
#2 4 8 14
TEST CIRCUIT AND SWITCHING WAVEFORMS
14
COMMERCIAL TEMPERATURE RANGE
IDTCSPT857D
2.5V - 2.6V PLL DIFFERENTIAL 1:10 SDRAM CLOCK DRIVER
APPLICATION INFORMATION
CSPT857D
C = 14pF
R = 120Ω
FBIN
FBIN
C = 14pF
R = 120Ω
CLK
CLK
Feedback path
R = 120Ω
Z = 60Ω
Z = 60Ω
8 more
SDRAM
SDRAM
~2.5"
~0.3"
~0.6" (split to terminator)
(1)
CSPT857D
C = 14pF
R = 120Ω
FBIN
FBIN
C = 14pF
R = 120Ω
CLK
CLK
Feedback path
R = 120Ω
Z = 60Ω
Z = 60Ω
8 more
SDRAM
SDRAM
~2.5"
~0.3"
~0.6" (split to terminator)
SDRAM
SDRAM
Stacked
Stacked
(1)
Figure 9. Clock Structure 1
Figure 10. Clock Structure 2
NOTE:
1. Memory module vendors may need to adjust the feedback capacitive load in order to meet DDR SDRAM registered DIMM timing requirements.
15
IDTCSPT857D
2.5V - 2.6V PLL DIFFERENTIAL 1:10 SDRAM CLOCK DRIVER
COMMERCIAL TEMPERATURE RANGE
ORDERING INFORMATION
CSPT
XXXXX XX
Package
Device Type
857D
PA
PAG
BV
BVG
NL
NLG
Thin Shrink Small Outline Package
TSSOP - Green
Very Fine Pitch Ball Grid Array
VFPBGA - Green
Thermally-Enhanced Plastic Very Fine Pitch
Flat No Lead Package
VFQFPN - Green
2.5V - 2.6V PLL Differential 1:10 SDRAM Clock Driver
Process
Blank
0°C to +70°C (Commercial)
X
CORPORATE HEADQUARTERS for SALES: for Tech Support:
6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 logichelp@idt.com
San Jose, CA 95138 fax: 408-284-2775
www.idt.com
P1-P3P4-P6P7-P9P10-P12P13-P15

CSPT857DBVG

Mfr. #:
Buy CSPT857DBVG
Manufacturer:
IDT
Description:
Clock Drivers & Distribution 2.5V PLL Differ 1:10 DDR 1 Clock Driver
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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