ICS87946AYI-01T IDT, Integrated Device Technology Inc, ICS87946AYI-01T Datasheet - Page 10

• Manufacturer Part Number: ICS87946AYI-01T
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Dividerr

Specifications of ICS87946AYI-01T

• Number Of Clock Inputs: 1
• Mode Of Operation: Differential
• Output Logic Level: LVCMOS/LVTTL
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: LQFP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Not Compliant

LVPECL Clock Input Interface
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. The differential signal must meet the V
V
for the PCLK/nPCLK input driven by the most common driver types.
Figure 2A. PCLK/nPCLK Input
Figure 2C. PCLK/nPCLK Input
Figure 2E. PCLK/nPCLK Input
ICS87946I-01
ICS87946AYI-01 REVISION B NOVEMBER 10, 2009
CMR
2.5V
3.3V
input requirements. Figures 2A to 2E show interface examples
3.3V
LVPECL
SSTL
CML
Driven by a CML Driver
Driven by a 3.3V LVPECL Driver
Driven by an SSTL Driver
Zo = 60Ω
Zo = 60Ω
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
R3
120
R3
125
2.5V
3.3V
R1
120
R1
84
R1
50
3.3V
R4
120
R4
125
R2
120
R2
84
R2
50
PCLK
nPCLK
PCLK
nPCLK
PCLK
nPCLK
3.3V
3.3V
3.3V
LVPECL
Input
LVPECL
Input
LVPECL
Input
PP
and
10
The input interfaces suggested here are examples only. If the driver
is from another vendor, use their termination recommendation.
Please consult with the vendor of the driver component to confirm the
driver termination requirements.
Figure 2B. PCLK/nPCLK Input
Figure 2D. PCLK/nPCLK Input Driven by
Figure 2F. PCLK/nPCLK Input Driven by
3.3V
3.3V
3.3V
3.3V LVPECL
LOW SKEW, ÷1, ÷2 LVPECL-TO-LVCMOS/LVTTL CLOCK GENERATOR
CML Built-In Pullup
LVDS
R5
100 - 200
Driven by a Built-In Pullup CML Driver
a 3.3V LVPECL Driver with AC Couple
a 3.3V LVDS Driver
R6
100 - 200
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
Zo = 50Ω
©2009 Integrated Device Technology, Inc.
C1
C2
R3
84
3.3V
R1
125
R1
100
R1
100
R4
84
R2
125
PCLK
nPCLK
PCLK
nPCLK
3.3V
3.3V
LVPECL
Input
PCLK
nPCLK
LVPECL
Input
3.3V
LVPECL
Input