83940DKILF IDT, 83940DKILF Datasheet - Page 12

• Manufacturer Part Number: 83940DKILF
• Description: Clock Drivers & Distribution
• Manufacturer: IDT

Specifications of 83940DKILF

• Product Category: Clock Drivers & Distribution
• Rohs: yes
• Part # Aliases: ICS83940DKILF

The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
V
ICS83940DI Data Sheet
LVPECL Clock Input Interface
differential signals. Both differential signals must meet the V
for the PCLK/nPCLK input driven by the most common driver types.
Figure 2A. PCLK/nPCLK Input Driven by a CML Driver
Figure 2C. PCLK/nPCLK Input Driven by a
Figure 2E. PCLK/nPCLK Input Driven by an SSTL Driver
ICS83940DYI REVISION C
CMR
input requirements. Figures 2A to 2E show interface examples
3.3V
2.5V
3.3V
CML
LVPECL
SSTL
3.3V LVPECL Driver
o = 60Ω
o = 60Ω
o = 50Ω
o = 50Ω
o = 50Ω
o = 50Ω
MARCH 20, 2013
R3
120
R3
125Ω
2.5V
R1
50Ω
3.3V
3.3V
R1
120
R1
84Ω
R4
120
R4
125Ω
R2
50Ω
R2
120
R2
84Ω
PCLK
nPCLK
PCLK
nPCLK
PCLK
nPCLK
3.3V
3.3V
3.3V
LVPECL
Input
LVPECL
Input
LVPECL
Input
PP
and
12
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 Driven by a
Figure 2D. PCLK/nPCLK Input Driven by a
3.3V
CML Built-In Pullup
LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER
Built-In Pullup CML Driver
3.3V LVPECL Driver with AC Couple
o = 50Ω
o = 50Ω
©2013 Integrated Device Technology, Inc.
R1
100Ω
PCLK
nPCLK
3.3V
LVPECL
Input