ICS85352AYI IDT, Integrated Device Technology Inc, ICS85352AYI Datasheet - Page 9

• Manufacturer Part Number: ICS85352AYI
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Multiplexerr

Specifications of ICS85352AYI

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: 700MHz
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: TQFP EP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Not Compliant

ICS85352I Data Sheet
Differential Clock Input Interface
The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL and
other differential signals. Both V
V
for the CLK/nCLK input driven by the most common driver types. The
input interfaces suggested here are examples only. Please consult
Figure 3A. CLK/nCLK Input
Figure 3C. CLK/nCLK Input
Figure 3E. CLK/nCLK Input
ICS85352AYI REVISION B JULY 6, 2010
CMR
input requirements. Figures 3A to 3F show interface examples
3.3V
3.3V
1.8V
HCSL
LVPECL
*Optional – R3 and R4 can be 0Ω
LVHSTL
IDT
LVHSTL Driver
Driven by an IDT LVHSTL Driver
Driven by a 3.3V LVPECL Driver
Driven by a 3.3V HCSL Driver
*R3
*R4
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
33Ω
33Ω
Zo = 50Ω
Zo = 50Ω
SWING
R3
125Ω
R1
50Ω
3.3V
R1
84Ω
and V
R1
50Ω
R4
125Ω
R2
50Ω
R2
84Ω
OH
R2
50Ω
must meet the V
CLK
nCLK
CLK
nCLK
CLK
nCLK
3.3V
3.3V
3.3V
Differential
Input
Differential
Input
Differential
Input
PP
and
9
with the vendor of the driver component to confirm the driver
termination requirements. For example in Figure 3A, the input
termination applies for IDT LVHSTL drivers. If you are using an
LVHSTL driver from another vendor, use their termination
recommendation.
Figure 3B. CLK/nCLK Input
Figure 3D. CLK/nCLK Input
Figure 3F. CLK/nCLK Input Driven by a 2.5V SSTL Driver
2.5V
3.3V
3.3V
LVDS
SSTL
LVPECL
Driven by a 3.3V LVPECL Driver
Driven by a 3.3V LVDS Driver
Zo = 60Ω
Zo = 60Ω
Zo = 50Ω
Zo = 50Ω
12 BIT, 2-TO-1, 3.3V, 2.5V LVPECL CLOCK BUFFER
Zo = 50Ω
Zo = 50Ω
©2010 Integrated Device Technology, Inc.
R3
120Ω
2.5V
R1
120Ω
R1
50Ω
R2
50Ω
R4
120Ω
R2
120Ω
R1
100
R2
50Ω
CLK
nCLK
CLK
nCLK
CLK
nCLK
3.3V
3.3V
3.3V
Differential
Input
Receiver
Differential
Input