ics8308agit Integrated Device Technology, ics8308agit Datasheet - Page 11

• Manufacturer Part Number: ics8308agit
• Description: Lvcmos/differential-input Lvcmos-output 1 8 350-mhz Clock Buffer
• Manufacturer: Integrated Device Technology

F
IDT
F
D
The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL
and other differential signals. Both V
V
examples for the HiPerClockS CLK/nCLK input driven by the most
common driver types. The input interfaces suggested here are
F
IGURE
PP
IGURE
IGURE
ICS8308I
LOW SKEW, 1-TO-8 DIFFERENTIAL/LVCMOS-TO-LVCMOS FANOUT BUFFER
IFFERENTIAL
™
3.3V
and V
R5,R6 locate near the driver pin.
/ ICS
3.3V
LVPECL
2C. H
2A. H
2E. H
™
1.8V
CMR
LVPECL
LVCMOS FANOUT BUFFER
R5
100 - 200
input requirements. Figures 2A to 2E show interface
LVHSTL
ICS
HiPerClockS
LVHSTL Driver
3.3V LVPECL D
ICS H
3.3V LVPECL D
I
I
P
I
P
P
C
ER
ER
ER
Zo = 50 Ohm
Zo = 50 Ohm
LOCK
R6
100 - 200
C
Zo = 50 Ohm
Zo = 50 Ohm
C
C
I
P
Zo = 50 Ohm
Zo = 50 Ohm
LOCK
LOCK
LOCK
ER
C
I
NPUT
S CLK/nCLK I
LOCK
S CLK/nCLK I
S CLK/nCLK I
RIVER
R1
50
S LVHSTL D
3.3V
R3
125
RIVER WITH
C1
C2
I
R1
84
NTERFACE
3.3V
R3
125
R2
50
R4
125
SWING
R1
84
R2
84
R4
125
and V
CLK
nCLK
R2
84
NPUT
AC C
NPUT
CLK
nCLK
NPUT
3.3V
3.3V
HiPerClockS
Input
RIVER
OH
HiPerClockS
Input
D
D
D
OUPLE
CLK
nCLK
must meet the
RIVEN BY
RIVEN BY
RIVEN BY
3.3V
HiPerClockS
Input
11
examples only. Please consult with the vendor of the driver
component to confirm the driver termination requirements. For
example in Figure 2A, the input termination applies for ICS
HiPerClockS LVHSTL drivers. If you are using an LVHSTL driver
from another vendor, use their termination recommendation.
F
F
IGURE
IGURE
3.3V
3.3V
LVDS_Driv er
2D. H
2B. H
LVPECL
3.3V LVPECL D
3.3V LVDS D
I
I
P
P
Zo = 50 Ohm
Zo = 50 Ohm
ER
ER
C
C
LOCK
LOCK
Zo = 50 Ohm
Zo = 50 Ohm
S CLK/nCLK I
S CLK/nCLK I
ICS8308AGI REV. B OCTOBER 16, 2007
RIVER
R1
50
R3
50
RIVER
R2
50
R1
100
CLK
nCLK
3.3V
NPUT
NPUT
HiPerClockS
Input
CLK
nCLK
D
D
3.3V
RIVEN BY
RIVEN BY
Receiv er