PI49FCT20807
1-10 Clock Buffer for Networking Applications
Features Description
Hig h Fre quenc y >150 MHz eTh PI4 9FC T 2 0 8 0 7, a 2 . 5 V c omp at ible , h i g h- s p e e d , low-noi s e
1-10 non-i nver t i ng c lo c k bu ffer, i s d e si g ne d to t a r ge t ne t work i ng
Hig h-sp e e d, low-nois e, non-inver t ing 1-10 buffer
appl ic at ion s t h at re qu i re low-s ke w, low-jit ter, a nd h i g h-f re quen-
L ow-ske w (<150ps) b et we en any t wo output clo cks
c y c lo c k d i s t r ibut ion . P rov id i ng out put-to - out put s k e w a s low a s
L ow dut y c ycle distor t ion <300ps
15 0 p s , t he PI4 9FC T 2 0 8 0 7 i s a n id e a l c lo c k d i s t r ibut ion d e v ic e for
L ow prop agat ion del ay <3.5ns s y nc h ronou s s y s t em s . D e si g n i ng s y nc h ronou s ne t work i ng s y s -
t em s re qu i re s a t i g ht le ve l of s k e w f rom a l a r ge nu mb er of out put s .
Mu lt iple V , GND pins for nois e re duc t ion
DD
2.5V supply volt age and 3V tolerant input
Packag ing (Pb-f re e & Gre en avai l able):
-20-pin SSOP (H)
Pin Description
-20-pin QSOP (Q)
Pin Name Description
BUF_IN Input
CLK [0:9] Outputs
GND Ground
V Power
DD
Block Diagram Pin Configuration
CLK0
BUF_IN
V
1 20
DD
GND
CLK9
2 19
CLK1
CLK0
CLK8
3 18
BUF_IN
GND
V 4 17
DD
20-Pin
CLK2 CLK1
CLK7
5 16
H, Q
GND
V
6 15
DD
CLK2
CLK6
7 14
CLK3
GND
V 8 13
DD
CLK3 CLK5
9 12
GND CLK4
10 11
CLK9
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1PI49FCT20807
1-10 Clock Buffer for Networking Applications
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Storage Temperature ......................................... 65C to +150C
Stresses greater than those listed under MAXIMUM
V Voltage .............................................................0.5V to +3.6V
DD
RATINGS may cause permanent damage to the de-
(4)
Input/Output Voltage ...................................... 0.5V to V +0.5V
DD vice. This is a stress rating only and functional opera-
tion of the device at these or any other conditions
DC Output Current ............................................. 60mA to +60mA
above those indicated in the operational sections of
Power Dissipation ............................................................. 500mW
this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may
Operating Range
affect reliability.
V Voltage ................................................................0.3V to 3.6V
IN
V Voltage ..................................................................2.5V 0.2V
DD
Industrial Temperature ......................................... 40C to +85C
Input Frequency ....................................................DC to 150 MHz
Capacitive Loading .................................................. 10pF to 25pF
DC Electrical Characteristics (Over the Operating Range)
(1) (2)
Parameters Description Test Conditions Min. Typ. Max. Units
V Input HIGH Voltage Guaranteed Logic HIGH Level (Input Pins) 1.7
IH
V
V Input LOW Voltage Guaranteed Logic LOW Level (Input Pins) 0.7
IL
V = Max., V = V or
DD IN DD
I Input Current V = V 1 mA
I IN DD
GND
Clamp Diode
V V = Min., I = 18mA 0.7 1
IK DD IN
Voltage
I = 1mA 2
Output HIGH OH
V V = Min., V = V or V
OH DD IN IH IL V
(3)
Voltage
I = 8mA 1.8
OH
I = 1mA 0.4
Output LOW OL
V V = Min., V = V or V
OL DD IN IH IL
Voltage
I = 8mA 0.6
OL
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V = 2.5V, +25C ambient and maximum loading.
DD
3. V = V 0.6V at rated current.
OH DD
4. This value is limited to 3.6V maximum.
Power Supply Characteristics
(1) (2)
Parameters Description Test Conditions Min. Typ. Max. Units
I Quiescent Power Supply V = Max. V = GND or V 0.1 20
DDQ DD IN DD
Current
A
(3)
I Supply Current per V = Max. V = V 0.6V 47 300
DD IN DD
DD
Inputs @ TTL HIGH
I Dynamic Supply Current V = 2.7V, 15pF & 150 MHz 136
DD DD
mA
(See Graph 1) 33-ohm load
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V = 2.5V, +25C ambient.
DD
3. Per TTL driven input (V = V 0.6V); all other inputs at V or GND.
IN DD DD
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