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PI49FCT3807D
1-10 Clock Buffer for Networking Applications
Product Features
High Frequency >156 MHz
High-speed, low-noise, non-inverting 1-10 buffer
Low-skew (<250ps) between any two output clocks
Low duty cycle distortion <250ps
Low propagation delay <2.5ns
Multiple VDD, GND pins for noise reduction
3.3V supply voltage
Available in SOIC, SSOP, and QSOP packages
BUF_IN
CLK0
CLK1
CLK2
Description
The PI49FCT3807D is a 3.3V compatible, high-speed, low-noise
1-10 non-inverting clock buffer. The key goal in designing the
PI6C3807D is to target networking applications that require lowskew, low-jitter, and high-frequency clock distribution. Providing
output-to-output skew as low as 150ps, the PI49FCT3807D is an
ideal clock distribution device for synchronous systems. Designing synchronous networking systems requires a tight level of skew
from a large number of outputs.
Pin ConfigurationBlock Diagram
BUF_IN
GND
CLK0
V
DD 4
CLK1
GND
1
2
3
20-Pin
H,Q,S
5
6
20
19
18
17
16
15
V
DD
CLK9
CLK8
GND
CLK7
V
DD
CLK3
CLK9
CLK2
V
CLK3
GND
7
DD 8
9
10
1
14
13
12
11
CLK6
GND
CLK5
CLK4
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1-10 Clock Buffer for Networking Applications
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ........................................................... 65°C to +150°C
V
Voltage ........................................................................... 0.5V to +4.6V
DD
Output Voltage ................................................................ 0.5V to VDD+0.5V
Input Voltage ......................................................................... 0.5V to +7.0V
DC Output Current .............................................................60mA to +60mA
Power Dissipation ............................................................................. 500mW
Operating Range
V
Voltage ................................................................................. 3.3V ± 0.3V
DD
Commercial Temperature ......................................................... 0°C to +70°C
Industrial Temperature ............................................................. 40V to +85V
Input Frequency .................................................................... DC to 156 MHz
Capacitive Loading ................................................................... 10pF to 50pF
PI49FCT3807D
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range)
sretemaraPnoitpircseDsnoitidnoCtseT
V
HI
V
LI
I
HI
I
LI
V
KI
V
HO
V
LO
I
HO
I
LO
egatloVHGIHtupnI)sniPtupnI(leveLHGIHcigoLdeetnarauG0.25.5
egatloVWOLtupnI)sniPtupnI(leveLWOLcigoLdeetnarauG5.08.0
tnerruCHGIHtupnIV
tnerruCWOLtupnIV
egatloVedoiDpmalCV
egatloVHGIHtuptuOV
egatloVWOLtuptuOV
tnerruCHGIHtuptuOV
tnerruCWOLtuptuOV
DD
DD
DD
DD
DD
DD
DD
.xaM=V
.xaM=V
I,.niM=
NI
V,.niM=
NI
V,.niM=
NI
V,V0.3=
NI
V,V0.3=
NI
Am81=7.02.1
V=
HI
V=
HI
V=
HI
V=
HI
)1(
V=
NI
NI
I
Vro
LI
Vro
LI
Vro
LI
Vro
LI
HO
I
HO
I
LO
I
LO
V,
TUO
V,
TUO
DD
DNG=1
Am1.0=V
Am21=4.2
Am1.0=2.0
Am21=3.05.0
)4(
V5.1=
)4(
V5.1=
.niM.pyT
1
2.0
DD
)3(
5457081
0529002
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, +25°C ambient and maximum loading.
3. VOH = VCC 0.6V at rated current.
4. This parameter is determined by device characterization but is not production tested.
5. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
)2(
.xaMstinU
0.3
V
µA
V
Am
2
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Power Supply Characteristics
sretemaraPnoitpircseDsnoitidnoCtseT
PI49FCT3807D
1-10 Clock Buffer for Networking Applications
)1(
.niM.pyT
)2(
.xaMstinU
I
∆I
QDD
DD
reptnerruCylppuS
HGIHLTT@stupnI
tnerruCylppuSrewoPtnecseiuQV
DD
V
DD
.xaM=VNIVroDNG=
.xaM=VNIV=
1.003
DD
)3(
V6.0
DD
74003
zHM0534
zHM7665
V
I
DD
tnerruCylppuScimanyD
DD
,V6.3=
daoLoN
zHM0866
zHM00118
zHM52179
zHM651121
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VDD = 3.3V, +25°C ambient.
3. Per TTL driven input (VIN = VDD 0.6V); all other inputs at VDD or GND.
Capacitance (T
Parameters
C
IN
C
OUT
= 25°C, f = 1 MHz)
A
(1)
Description Test Conditions Typ Max. Un i t s
Input Capacitance VIN = 0V 3.0 4
Output Capacitance V
= 0V 6
OUT
Note:
1. This parameter is determined by device characterization but is not production tested.
Aµ
Am
pF
Product Pin Description
Pin Name Description
BUF_IN Input
CLK [0:9] Outputs
GND Ground
V
DD
Power
Test Circuits for All Outputs
V
Pulse
Generator
IN
V
DD
D.U.T.
Definitions:
CL = Load capacitance: includes jig and probe capacitance.
V
OUT
RT = Termination resistance, should be equal to Zout of the
Pulse Generator.
C
L
3
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PI49FCT3807D
1-10 Clock Buffer for Networking Applications
Switching Characteristics (V
sretemaraPnoitpircseDsnoitidnoCtseT
Ft/RtV0.2~V8.0emiTllaF/esiRnKLCC
t
HLP
t
LHP
)3(
t
)o(KS
)3(
t
)p(KS
)3(
t
)t(KS
)noitisnartemas(
= 3.3V ± 0.3V, TA = 85°C)
CC
t(snoitisnartetisopponeewtebwekS
tuptuoemasehtfo
)1(
L
nKLCotNI_FUByaleDnoitagaporPC
egakcapemasehtfostuptuoowtneewtebwekS
t-
)
LHP
HLP
)4(
egakcaptnereffidfostuptuoowtneewtebwekS
L
C
L
C
L
C
L
zHM521,Fp51=7.00.1
zHM521,Fp51=0.12.25.2
zHM521,Fp51=011052
zHM521,Fp51=002052
zHM521,Fp51=55.0sn
Notes:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. Skew measured at worse cast temperature (max. temp).
4. Identical conditions: loading, transitions, supply voltage, temperature, package type and speed grade.
.niM.pyT.xaMstinU
sn
sp
4
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SWITCHING WAVEFORMS
PI49FCT3807D
1-10 Clock Buffer for Networking Applications
Propagation Delay
Input
t
PLH
Output
Output Skew t
Input
CLKx
CLKy
PLHx
t
t
PLHy
SK(O)
t
SK(o)
Pulse Skew t
3V
1.5V
0V
t
PHL
V
OH
2.0V
1.5V
0.8V
V
t
R
OL
t
F
Input
Output
Package Skew t
3V
t
PHLx
t
SK(o)
t
PHLy
1.5V
0V
V
OH
1.5V
V
OL
V
OH
1.5V
V
OL
Input
Package 1
Output
Package 2
Output
t
PLH
t
PLH1
t
PLH2
SK(P)
t
SK(p)
SK(T)
t
SK(t)
=t
PHLtPLH
t
PHL
t
PHL1
t
SK(t)
t
PHL2
3V
1.5V
0V
V
OH
1.5V
V
OL
3V
1.5V
0V
V
1.5V
V
V
1.5V
V
OH
OL
OH
OL
t
SK(o)
=t
PLHytPLHx
or
t
PHLytPHLx
5
t
SK(t)
=t
PLH2tPLH1
or
t
PHL2tPHL1
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PI49FCT3807D
1-10 Clock Buffer for Networking Applications
20-Pin SOIC (S20) Package
20
7.40
.2914
7.60
.2992
1
.496
12.60
.511
12.99
.020
0.508
.030
.050
BSC
1.27
0.762
REF
.013
.020
0.33
0.51
.0926
.1043
.0040
.0118
2.35
2.65
SEATING
PLANE
0.10
0.30
X.XX
X.XX
20-Pin QSOP (Q20) Package
20
0.254
.010
.029
0-8˚
0.41
1.27
10.00
10.65
DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS
.394
.419
.016
.050
0.737
x 45˚
.0091
.0125
0.23
0.32
20-Pin SSOP (H20) Package
20
5.00
.197
5.60
.220
1
.272
.295
6.90
.0256
BSC
0.65
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
X.XX
7.50
.0098
Max.
0.25
.078
Max
2.00
SEATING
PLANE
.002
Min
0.050
0.09
.004
0.25
.009
.022
0.55
.037
0.95
.291
.322
7.40
8.20
1
.025
BSC
0.635
.337
.344
.058
1.47
8.56
8.74
REF
.008
.012
0.203
0.305
.150
.157
.053
.069
3.81
3.99
.004
.010
1.35
1.75
0.101
0.254
SEATING
PLANE
.015 x 45˚
0.38
0.41
.016
1.27
.050
.228
.244
5.79
6.19
X.XX
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
.007
.010
0.178
0.254
Ordering Information
edoCgniredrOepyTegakcaP
SD7083TCF94IPCIOSediwlim003nip-02
QD7083TCF94IPPOSQediwlim051nip-02
HD7083TCF94IPPOSSediwlim902nip-02
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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PS8493 08/09/00
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