83940DYLFT IDT, Integrated Device Technology Inc, 83940DYLFT Datasheet - Page 11
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83940DYLFT
Manufacturer Part Number
83940DYLFT
Description
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Driverr
Datasheet
1.83940DYLFT.pdf
(16 pages)
Specifications of 83940DYLFT
Number Of Clock Inputs
2
Output Frequency
250MHz
Output Logic Level
LVCMOS/LVTTL
Operating Supply Voltage (min)
2.375V
Operating Supply Voltage (typ)
2.5/3.3V
Operating Supply Voltage (max)
3.465V
Package Type
LQFP
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
32
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
83940DYLFT
Manufacturer:
IDT
Quantity:
20 000
83940DY
LVPECL C
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. Both V
and V
examples for the PCLK/nPCLK input driven by the most
common driver types. The input interfaces suggested here
F
F
F
IGURE
IGURE
IGURE
CMR
2A. PCLK/nPCLK I
2C. PCLK/nPCLK I
2E. PCLK/nPCLK I
3.3V
3.3V
input requirements. Figures 2A to 2F show interface
2.5V
LVPECL
CML
BY AN
BY A
BY AN
SSTL
LOCK
3.3V LVPECL D
O
Zo = 50 Ohm
Zo = 50 Ohm
SSTL D
PEN
I
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 60 Ohm
Zo = 60 Ohm
NPUT
C
OLLECTOR
SWING
I
NTERFACE
RIVER
NPUT
NPUT
NPUT
3.3V
R1
50
2.5V
R3
120
3.3V
R3
125
and V
R1
120
R1
84
D
D
D
R2
50
RIVER
RIVEN
RIVEN
RIVEN
CML D
R4
120
R2
120
R4
125
OH
R2
84
PCLK
nPCLK
must meet the V
3.3V
PCLK
nPCLK
PCLK
nPCLK
3.3V
RIVER
HiPerClockS
PCLK/nPCLK
3.3V
HiPerClockS
PCLK/nPCLK
Input
HiPerClockS
LVPECL-
www.idt.com
PP
11
are examples only. If the driver is from another vendor, use
their termination recommendation. Please consult with the
vendor of the driver component to confirm the driver
termination requirements.
F
F
F
IGURE
IGURE
IGURE
3.3V
3.3V
TO
3.3V
2B. PCLK/nPCLK I
3.3V LVPECL
2D. PCLK/nPCLK I
2F.
LVDS
-LVCMOS / LVTTL F
CML Built-In Pullup
R5
100 - 200
BY A
PCLK/nPCLK I
BY A
BY A
Zo = 50 Ohm
Zo = 50 Ohm
B
R6
100 - 200
3.3V LVPECL D
3.3V LVDS D
UILT
Zo = 50 Ohm
Zo = 50 Ohm
-I
R5
100
N
Zo = 50 Ohm
Zo = 50 Ohm
P
ULLUP
NPUT
NPUT
NPUT
C1
C2
L
C1
C2
RIVER
OW
CML D
D
D
D
3.3V
R3
84
ICS83940D
RIVER WITH
R1
125
RIVEN
RIVEN
RIVEN
R1
100
3.3V
R3
1K
R1
1K
S
R4
84
ANOUT
R2
125
KEW
RIVER
R4
1K
PCLK
nPCLK
R2
1K
REV. B AUGUST 9, 2010
3.3V
PCLK
nPCLK
AC C
HiPerClockS
PCLK/nPCLK
PCLK
nPCLK
, 1-
3.3V
3.3V
B
HiPerClockS
PCL K/n PC LK
HiPerClockS
PCLK/nPCLK
TO
UFFER
OUPLE
-18