PI6C4911504-03

PI6C4911504-03
High Performance LVPECL Fanout Buffer
Features
Description
ÎÎ4 LVPECL outputs
The PI6C4911504-03 is a high performance fanout buffer device
which supports up to 1.5GHz frequency. PI6C4911504-03 features selectable single-ended clock or crystal inputs and translates to four LVPECL outputs. The outputs are synchronized
with input clock during asynchronous assertion /deassertion of
CLK_EN pin. PI6C4911504-03 is ideal for crystal or LVCMOS/
LVTTL to LVPECL translation. Typical clock translation and
distribution applications are data-communications and telecommunications.This device is ideal for systems that need to distribute low jitter clock signals to multiple destinations.
ÎÎUp to 1.5GHz output frequency
ÎÎUltra low additive phase jitter: < 0.03 ps
(typ) (differential
156.25MHz, 12KHz to 20MHz integration range)
ÎÎTwo selectable inputs
ÎÎLow delay from input to output (Tpd typ. 1.5ns)
ÎÎ2.5V / 3.3V power supply
ÎÎIndustrial temperature support
ÎÎTSSOP-20 package
Applications
ÎÎNetworking systems including switches and Routers
ÎÎHigh frequency backplane based computing and telecom
platforms
Pin Configuration (20-Pin TSSOP)
Block Diagram
1
20
Q0
CLK_EN
2
19
NQ0
CLK_SEL
3
18
VCC
CLK
4
17
Q1
NC
5
16
NQ1
Xtal1
6
15
Q2
Xtal2
7
14
NQ2
NC
8
13
VCC
NC
9
12
Q3
VCC
10
11
NQ3
VEE
13-0104
1
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
Pinout Table
Pin #
Pin Name
1
VEE
Power
2
CLK_EN
Input
Pullup
Clock output enable/ disable
3
CLK_SEL
Input
Pulldown
Clock input source selection pin
4
CLK
Input
Pulldown
Clock input
5
NC
-
No Connect
6
XTAL1
Input
Xtal input
7
XTAL2
Output
Xtal output
8, 9
NC
-
No connect
10, 13, 18
VCC
Power
Power supply
Output
LVPECL output clock
Output
LVPECL output clock
Output
LVPECL output clock
nQ3
11, 12
Q3
nQ2
14, 15
Q2
nQ1
16, 17
Q1
Type
Description
Negative power supply
nQ0
19, 20
Output
Q0
Note: Pullup and Pulldown are for internal input resistors
LVPECL output clock
Function Table
Table 1: Clock source input select function
CLK_SEL
Function
0
CLK is the selected reference input
1
XTAL is the selected input
Table 2: Clock output select function
CLK_EN
Function
0
All outputs disabled. Qx disabled low, nQx disabled High.
1
All outputs enabled.
13-0104
2
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested)
Storage temperature....................................................-55 to +150ºC
Supply Voltage to Ground Potential (VCC).......... -0.5 to +4.65V
Inputs (Referenced to GND)............................... -0.5 to Vcc+0.5V
Clock Output (Referenced to GND).................. -0.5 to Vcc+0.5V
Soldering Temperature (Max of 10 seconds).....................+260ºC
Latch up...................................................................................200mA
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.
Power Supply Characteristics and Operating Conditions
Symbol
Parameter
VCC
Supply Voltage
IDD
Power Supply Current
TA
Ambient Operating Temperature
13-0104
Test Condition
Min.
Typ.
Max.
Units
3.135
3.465
V
2.375
2.625
V
130
mA
85
°C
All outputs unloaded
-40
3
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
DC Electrical Specifications - LVCMOS Inputs
Symbol
Parameter
Conditions
Min.
VIH
Input high voltage
VCC=3.3V
VIL
Input low voltage
VIH
VIL
Typ.
Max.
Units
2.0
VCC+0.3
V
VCC=3.3V
-0.3
0.8
V
Input high voltage
VCC=2.5V
1.7
VCC+0.3
V
Input low voltage
VCC=2.5V
-0.3
0.7
V
CLK, CLK_SEL
150
uA
CLK_EN
10
uA
Input High current
IIH
CLK, CLK_SEL
-10
uA
CLK_EN
-150
uA
Input Low current
IIL
CIN
Input capacitance
4
pF
R PULLUP/
Input pullup and pulldown resistor
50
kΩ
PULLDOWN
DC Electrical Specifications- LVPECL Outputs
Parameter
Description
Output High voltage
VOH
Conditions
Min.
Typ.
Max.
VCC=3.3V
2.1
2.6
VCC=2.5V
1.3
1.75
VCC=3.3V
1.0
1.8
VCC=2.5V
0.4
0.8
13-0104
V
V
Output Low voltage
VOL
Units
4
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
AC Electrical Specifications – Differential Outputs
Parameter
Description
Conditions
Min.
Typ.
FOUT
Clock output frequency
LVPECL
Tr
Output rise time
From 20% to 80%
150
ps
Tf
Output fall time
From 80% to 20%
150
ps
TODC
Output duty cycle
VPP
Output swing Single-ended
Tj
Buffer additive jitter RMS
TSK
Output Skew
TPD
Propagation Delay
TOD
Valid to HiZ
200
ns
TOE
HiZ to valid
200
ns
48
LVPECL outputs
Max.
Units
1500
MHz
52
400
4 outputs devices, outputs in same
bank, with same load, at DUT.
%
mV
0.03
ps
25
ps
1500
ps
Notes:
All parameters are measured with CMOS input of 266MHz unless stated otherwise
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5
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
Crystal Characteristics
Parameters
Test Conditions
Min.
Max.
Units
50
MHz
Equivalent Series Resistance (ESR)
50
Ω
Shunt Capacitance
7
pF
Drive Level
1
mW
Mode of Oscillation
Fundamental
Frequency
13-0104
Typ.
12
6
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
Output Skew
Propagation Delay
Output Skew TSK
Propagation Delay TPD
VOH
CLK
CLK
TPLH
TPHL
Qn
VOH
TPLHx
TPHLx
Qn
TSK
TSK
TF
VOH
VOL
VOL
TR
VOL
Qn+1
VOH
VOL
TPLHy
TPHLy
TSK = TPLHy - TPLHx or TSK = TPHLy - TPHLx
TSK = TPLH2 - TPLH1 or TSK = TPHL2 - TPHL1
13-0104
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PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
Configuration Test Load Board Termination for LVPECL
13-0104
8
PI6C4911504-03
Rev. B
06/24/2013
PI6C4911504-03
High Performance LVPECL Fanout Buffer
Packaging Mechanical: 20-Contact TSSOP (L)
DATE: 05/03/12
DESCRIPTION: 20-pin, 173mil Wide TSSOP
Notes:
1. Refer JEDEC MO-153F/AC
2. Controlling dimensions in millimeters
3. Package outline exclusive of mold flash and metal burr
PACKAGE CODE: L
DOCUMENT CONTROL #: PD-1311
REVISION: F
12-0373
Ordering Information
Ordering Number
Package Code
Package Description
PI6C4911504-03LIE
L
Pb-free & Green 20-Contact TSSOP
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free and Green
• X suffix = Tape/Reel
13-0104
9
PI6C4911504-03
Rev. B
06/24/2013