83940AY-02LF Integrated Device Technology (Idt), 83940AY-02LF Datasheet - Page 9

• Manufacturer Part Number: 83940AY-02LF
• Description: Clock Driver 2-IN LVCMOS/LVTTL 32-Pin LQFP Tray
• Manufacturer: Integrated Device Technology (Idt)

Specifications of 83940AY-02LF

• Package: 32LQFP
• Configuration: 1 x 2:1
• Input Signal Type: HCSL/LVCMOS/LVDS/LVHSTL/LVPECL/LVTTL/SSTL
• Maximum Output Frequency: 200 MHz
• Operating Supply Voltage: 2.5|3.3 V

83940AY-02
F
D
The CLK /nCLK accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL
and other differential signals. Both V
the V
interface examples for the CLK/nCLK input driven by the most
common driver types. The input interfaces suggested here are
F
F
IGURE
IGURE
IGURE
IFFERENTIAL
3.3V
R5,R6 locate near the driver pin.
PP
3.3V
2C.
LVPECL
2A.
and V
2E. CLK/
1.8V
LVPECL
R5
100 - 200
LVHSTL
ICS
HiPerClockS
LVHSTL Driver
CMR
CLK/nCLK I
3.3V LVPECL D
CLK/nCLK I
LVHSTL D
3.3V LVPECL D
C
input requirements. Figures 2A to 2E show
Zo = 50 Ohm
Zo = 50 Ohm
LOCK
R6
100 - 200
N
Zo = 50 Ohm
Zo = 50 Ohm
CLK I
Zo = 50 Ohm
Zo = 50 Ohm
I
RIVER
NPUT
NPUT
NPUT
NPUT
R1
50
D
3.3V
R3
125
RIVER WITH
C1
C2
D
RIVER
D
I
R1
84
RIVEN BY
NTERFACE
RIVEN BY
RIVEN BY
SWING
3.3V
R3
125
R2
50
R4
125
R1
84
R2
84
and V
CLK
nCLK
R4
125
R2
84
AC C
CLK
nCLK
3.3V
3.3V
HiPerClockS
Input
OH
HiPerClockS
Input
OUPLE
CLK
nCLK
must meet
D
3.3V
HiPerClockS
Input
IFFERENTIAL
www.idt.com
9
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 LVHSTL
drivers. If you are using an LVHSTL driver from another
vendor, use their termination recommendation.
F
F
IGURE
IGURE
3.3V
3.3V
-
TO
2D. CLK/nCLK I
2B.
LVDS_Driv er
LVPECL
-LVCMOS/LVTTL F
3.3V LVDS D
CLK/nCLK I
3.3V LVPECL D
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
NPUT
NPUT
RIVER
R1
50
R3
50
D
L
D
RIVER
ICS83940-02
RIVEN BY
OW
RIVEN BY
R2
50
R1
100
CLK
nCLK
S
ANOUT
3.3V
KEW
HiPerClockS
REV. A AUGUST 4, 2010
Input
CLK
nCLK
, 1-
3.3V
B
Receiv er
TO
UFFER
-18