ICS557GI-05ALFT IDT, Integrated Device Technology Inc, ICS557GI-05ALFT Datasheet - Page 5

• Manufacturer Part Number: ICS557GI-05ALFT
• Description: IC CLK SOURCE QUAD DIFF 20-TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Generatorr

Specifications of ICS557GI-05ALFT

• Input: Clock, Crystal
• Output: HCSL, LVDS
• Frequency - Max: 200MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Frequency-max: 200MHz
• Number Of Elements: 1
• Supply Current: 105mA
• Pll Input Freq (min): 25MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSSOP
• Output Frequency Range: Up to 200MHz
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Industrial
• Pin Count: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 557GI-05ALFT

Output Structures
General PCB Layout Recommendations
For optimum device performance and lowest output phase
noise, the following guidelines should be observed.
1. Each 0.01µF decoupling capacitor should be mounted on
the component side of the board as close to the VDD pin as
possible.
2. No vias should be used between decoupling capacitor
and VDD pin.
3. The PCB trace to VDD pin should be kept as short as
possible, as should the PCB trace to the ground via.
Distance of the ferrite bead and bulk decoupling from the
device is less critical.
4. An optimum layout is one with all components on the
same side of the board, minimizing vias through other signal
layers (any ferrite beads and bulk decoupling capacitors can
be mounted on the back). Other signal traces should be
routed away from the ICS557-05A.This includes signal
traces just underneath the device, or on layers adjacent to
the ground plane layer used by the device.
IDT® QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE
ICS557-05A
QUAD DIFFERENTIAL PCI-EXPRESS CLOCK SOURCE
R
=2.3 mA
R
IREF
475
Ω
See Output Termination
Sections - Pages 3 ~ 5
6*IREF
5
ICS557-05A
PCIE SSCG
REV N 032311