ics83940ay-02 Integrated Device Technology, ics83940ay-02 Datasheet - Page 9

• Manufacturer Part Number: ics83940ay-02
• Description: Differential/lvcmos-input Lvcmos-output 1 18 200-mhz Clock Buffer
• Manufacturer: Integrated Device Technology

83940AY-02
F
D
The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL
and other differential signals. Both V
V
face examples for the HiPerClockS CLK/nCLK input driven by
the most common driver types. The input interfaces suggested
F
F
IGURE
PP
IGURE
IGURE
IFFERENTIAL
3.3V
and V
R5,R6 locate near the driver pin.
3.3V
LVPECL
2C. H
2A. H
2E. H
1.8V
CMR
LVPECL
R5
100 - 200
input requirements. Figures 2A to 2E show inter-
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
LOCK
Zo = 50 Ohm
Zo = 50 Ohm
LOCK
LOCK
ER
C
I
S CLK/nCLK I
NPUT
S CLK/nCLK I
LOCK
S CLK/
RIVER
S LVHSTL D
RIVER WITH
R1
50
3.3V
R3
125
C1
C2
I
R1
84
NTERFACE
SWING
N
CLK I
R2
50
3.3V
R3
125
R4
125
R1
84
R2
84
and V
CLK
nCLK
R4
125
www.icst.com/products/hiperclocks.html
R2
84
AC C
NPUT
NPUT
CLK
nCLK
NPUT
3.3V
OH
3.3V
RIVER
HiPerClockS
Input
must meet the
HiPerClockS
Input
D
D
D
OUPLE
CLK
nCLK
RIVEN BY
RIVEN BY
RIVEN BY
D
3.3V
HiPerClockS
Input
IFFERENTIAL
9
F
here are 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
IGURE
IGURE
3.3V
3.3V
-
TO
2D. H
2B. H
LVDS_Driv er
LVPECL
-LVCMOS/LVTTL F
3.3V LVDS D
3.3V LVPECL 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
RIVER
R1
50
RIVER
R3
50
L
ICS83940-02
OW
R2
50
R1
100
CLK
nCLK
S
ANOUT
3.3V
KEW
NPUT
NPUT
HiPerClockS
Input
REV. A JULY 30, 2007
CLK
nCLK
, 1-
D
D
3.3V
B
RIVEN BY
RIVEN BY
Receiv er
TO
UFFER
-18