ICS830-21I ICST [Integrated Circuit Systems], ICS830-21I Datasheet - Page 8

• Manufacturer Part Number: ICS830-21I
• Description: 2.5V, 3.3V DIFFERENTIAL-TO-LVCMOS/LVTTL TRANSLATOR
• Manufacturer: ICST [Integrated Circuit Systems]

83021AMI
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
IGURE
PP
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
Integrated
Circuit
Systems, Inc.
P
P
C
ER
ER
ER
LOCK
Zo = 50 Ohm
Zo = 50 Ohm
R6
100 - 200
C
Zo = 50 Ohm
Zo = 50 Ohm
C
I
C
P
Zo = 50 Ohm
Zo = 50 Ohm
LOCK
LOCK
LOCK
ER
C
I
NPUT
LOCK
S CLK/nCLK I
S CLK/nCLK I
S CLK/
RIVER
S LVHSTL D
RIVER WITH
R1
50
3.3V
R3
125
C1
C2
I
NTERFACE
R1
84
SWING
N
CLK I
3.3V
R3
125
R2
50
R4
125
R1
84
R2
84
and V
2.5V 3.3V D
R4
125
CLK
nCLK
NPUT
NPUT
www.icst.com/products/hiperclocks.html
NPUT
AC C
R2
84
CLK
nCLK
3.3V
OH
RIVER
3.3V
HiPerClockS
Input
D
must meet the
D
D
HiPerClockS
Input
OUPLE
RIVEN BY
CLK
nCLK
RIVEN BY
RIVEN BY
3.3V
HiPerClockS
Input
IFFERENTIAL
8
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
F
IGURE
IGURE
3.3V
3.3V
2B. H
2D. H
LVDS_Driv er
LVPECL
-
TO
3.3V LVDS D
3.3V LVPECL D
I
I
-LVCMOS/LVTTL T
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
R2
50
R1
100
ICS83021I
CLK
nCLK
3.3V
REV. C DECEMBER 12, 2005
NPUT
NPUT
HiPerClockS
Input
RANSLATOR
CLK
nCLK
D
D
3.3V
RIVEN BY
RIVEN BY
1-
Receiv er
TO
-1