8543BGILF Integrated Device Technology (Idt), 8543BGILF Datasheet - Page 11

• Manufacturer Part Number: 8543BGILF
• Description: Clock Driver 2-IN LVDS 20-Pin TSSOP Tube
• Manufacturer: Integrated Device Technology (Idt)

Specifications of 8543BGILF

• Package: 20TSSOP
• Configuration: 1 x 2:1
• Input Signal Type: CML/HCSL/LVDS/LVHSTL/LVPECL/SSTL
• Maximum Output Frequency: 650 MHz
• Operating Supply Voltage: 3.3 V

Differential Clock Input Interface
The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL
and other differential signals. Both signals must meet the V
V
examples for the HiPerClockS CLK/nCLK input driven by the most
common driver types. The input interfaces suggested here are
examples only. Please consult with the vendor of the driver
Figure 3A. HiPerClockS CLK/nCLK Input
Figure 3C. HiPerClockS CLK/nCLK Input
Figure 3E. HiPerClockS CLK/nCLK Input
IDT™ / ICS™ LVDS FANOUT BUFFER
CMR
ICS8543I
LOW SKEW, 1-TO-4, DIFFERENTIAL-TO-LVDS FANOUT BUFFER
2.5V
input requirements. Figures 3A to 3F show interface
1.8V
3.3V
HCSL
LVPECL
*Optional – R3 and R4 can be 0Ω
LVHSTL
IDT
HiPerClockS
LVHSTL Driver
Driven by an IDT Open Emitter
HiPerClockS 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
33
33
Zo = 50Ω
Zo = 50Ω
R3
125
R1
50
3.3V
R1
84
R1
50
R4
125
R2
50
R2
84
R2
50
CLK
nCLK
CLK
nCLK
CLK
nCLK
3.3V
3.3V
3.3V
HiPerClockS
Input
HiPerClockS
Input
HiPerClockS
Input
PP
and
11
component to confirm the driver termination requirements. For
example, in Figure 3A, the input termination applies for IDT
HiPerClockS open emitter LVHSTL drivers. If you are using an
LVHSTL driver from another vendor, use their termination
recommendation.
Figure 3B. HiPerClockS CLK/nCLK Input
Figure 3D. HiPerClockS CLK/nCLK Input
Figure 3F. HiPerClockS CLK/nCLK Input
2.5V
3.3V
3.3V
SSTL
LVDS
LVPECL
Driven by a 3.3V LVPECL Driver
Driven by a 3.3V LVDS Driver
Driven by a 2.5V SSTL Driver
Zo = 60Ω
Zo = 60Ω
Zo = 50Ω
Zo = 50Ω
ICS8543BGI REV. E SEPTEMBER 9, 2008
Zo = 50Ω
Zo = 50Ω
R3
120
2.5V
R1
120
R1
50
R2
50
R4
120
R2
120
R2
50
R1
100
CLK
nCLK
CLK
nCLK
CLK
nCLK
3.3V
3.3V
HiPerClockS
3.3V
HiPerClockS
Input
Receiver