Microchip SY58035U Bedienungsanleitung

Microchip Nicht kategorisiert SY58035U

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1
M9999-073010
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
ā– Provides six ultra-low skew copies of the selected
input
ā– 2:1 MUX input included for clock switchover
applications
ā– Guaranteed AC performance over temperature and
voltage:
ā€¢ Clockī˜ƒfrequencyī˜ƒrange:ī˜ƒ DCī˜ƒtoī˜ƒ>ī˜ƒ4.5GHz
ā€¢ <320psī˜ƒIN-to-OUTī˜ƒtpd
ā€¢ <110psī˜ƒtr
/ tf times
ā€¢ <20psī˜ƒskewī˜ƒ(output-to-output)
ā– Ultra-low jitter design:
ā€¢ 50fsRMSī˜ƒphaseī˜ƒjitterī˜ƒ(typ)
ā– Lowī˜ƒsupplyī˜ƒvoltageī˜ƒoperation:ī˜ƒ 2.5Vī˜ƒandī˜ƒ3.3V
ā– Uniqueī˜ƒinputī˜ƒterminationī˜ƒandī˜ƒVTī˜ƒpinī˜ƒacceptsī˜ƒDC-
coupledī˜ƒandī˜ƒAC-coupledī˜ƒinputsī˜ƒ(CML,ī˜ƒPECL,ī˜ƒLVDS)
ā– Uniqueī˜ƒinputī˜ƒisolationī˜ƒdesignī˜ƒminimizesī˜ƒcrosstalk
ā– 100Kī˜ƒLVPECLī˜ƒcompatibleī˜ƒoutputī˜ƒswing
ā– ā€“40Ā°Cī˜ƒtoī˜ƒ+85Ā°Cī˜ƒtemperatureī˜ƒrange
ā– Availableī˜ƒinī˜ƒ32-pinī˜ƒ(5mmī˜ƒxī˜ƒ5mm)ī˜ƒMLFĀ® package
FEATURES
4.5GHz,ī˜ƒ1:6ī˜ƒLVPECLī˜ƒFANOUTī˜ƒ
BUFFERī˜ƒWITHī˜ƒ2:1 MUX INPUT
AND INTERNAL TERMINATION
Precision EdgeĀ®
SY58035U
APPLICATIONS
ā– Redundantī˜ƒclockī˜ƒdistribution
ā– Allī˜ƒSONET/SDHī˜ƒclock/dataī˜ƒdistribution
ā– Allī˜ƒFibreī˜ƒChannelī˜ƒdistribution
ā– Allī˜ƒGigabitī˜ƒEthernetī˜ƒclockī˜ƒdistribution
The SY58035U is a 2.5V/3.3V precision, high-speed, 1:6
fanout capable of handling clocks up to 4.5GHz. A differential
2:1 MUX input is included for redundant clock switchover
applications.
The differential input includes Micrelā€™s unique, 3-pin input
termination architecture that allows the device to interface
to any differential signal (AC- or DC-coupled) as small as
100mV without any level shifting or termination resistor
networks in the signal path. The outputs are LVPECL (100K,
temperature compensated), with extremely fast rise/fall times
guaranteed to be less than 110ps.
The SY58035U operates from a 2.5V Ā±5% supply or a
3.3V Ā±10% supply and is guaranteed over the full industrial
temperature range of ā€“40Ā°C to +85Ā°C. For applications that
require CML outputs, consider the SY58034U or for 400mV
LVPECL outputs the SY58036U. The SY58035U is part of
Micrelā€™s high-speed, Precision EdgeĀ® product line.
All support documentation can be found on Micrelā€™s web
site at www.micrel.com.
FUNCTIONALī˜ƒBLOCKī˜ƒDIAGRAM
Precision EdgeĀ®
Q0
/Q0
Q1
/Q1
Q2
/Q2
Q3
/Q3
Q4
/Q4
Q5
/Q5
IN0
/IN0
V
T0
50ā„¦
50ā„¦
IN1
/IN1
V
T1
50ā„¦
50ā„¦
0
1
Mux
SEL
(TTL/CMOS)
S
V
REF-AC0
V
REF-AC1
2:1 Mux
1:6 Fanout
Rev.: F Amendment: /0
Issue Date: July 2010
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
2
Precision EdgeĀ®
SY58035U
Micrel, Inc.
M9999-073010
hbwhelp@micrel.com or (408) 955-1690
PACKAGE/ORDERINGī˜ƒINFORMATION
Pinī˜ƒNumberī˜ƒī˜ƒ Pinī˜ƒNameī˜ƒ Pinī˜ƒFunction
1, 4 IN0, /IN0 Differential Input: These input pairs are the differential signal inputs to the device. These
5, 8 IN1, /IN1 inputs accept AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally
terminates to a VT pin through 50Ć½. Note that these inputs will default to an indeterminate
state if left open. Please refer to the ā€œInput Interface Applicationsā€ section for more details.
2, 6 VT0, VT1 Input Termination Center-Tap: Each side of the differential input pair terminates to a VT
pin. The VT0 and VT1 pins provide a center-tap to a termination network for maximum
ī˜ƒ ī˜ƒ ī˜ƒ interfaceī˜ƒī›€exibility.ī˜ƒSeeī˜ƒā€œInputī˜ƒInterfaceī˜ƒApplicationsā€ī˜ƒsectionī˜ƒforī˜ƒmoreī˜ƒdetails.
31 SEL This single-ended TTL/CMOS-compatible input selects the inputs to the multiplexer. Note
ī˜ƒ ī˜ƒ ī˜ƒ thatī˜ƒthisī˜ƒinputī˜ƒisī˜ƒinternallyī˜ƒconnectedī˜ƒtoī˜ƒaī˜ƒ25kĪ©ī˜ƒpull-upī˜ƒresistorī˜ƒandī˜ƒwillī˜ƒdefaultī˜ƒtoī˜ƒaī˜ƒlogicī˜ƒī˜ƒ
HIGH state if left open. The MUX select switchover function is asynchronous.
10 NC No connect.
11, 16, 18, VCC Positive Power Supply: Bypass with 0.1ĀµF || 0.01ĀµF low ESR capacitors and place as
23, 25, 30 close to the VCC pin as possible.
29, 28 Q0, /Q0, Differential Outputs: These 100K (temperature compensated) LVPECL output pairs are
27, 26 Q1, /Q1, low skew copies of the selected input. Please refer to the ā€œTruth Tableā€ for details.
22, 21 Q2, /Q2,
20, 19 Q3, /Q3,
15, 14 Q4, /Q4,
13, 12 Q5, /Q5
9, 17, 24, 32 GND, Ground: Ground pin and exposed pad must be connected to the same ground plane.
Exposed Pad
3, 7 VREF-AC0 Reference Voltage: These output biases to V
CCā€“1.2V. It is used for AC-coupling inputs
VREF-AC1 (IN, /IN). Connect VREF-AC directly to the VT pin. Bypass with 0.01ĀµF low ESR capacitor to
VCC. See ā€œInput Interface Applicationsā€ section. Maximum sink/source current is Ā±1.5mA.
Due to the limited drive capability, the VREF-AC pin is only intended to drive its respective
VT pin.
PIN DESCRIPTION
24
23
22
21
20
19
18
17
GND
VCC
Q2
/Q2
Q3
/Q3
VCC
GND
IN0
VT0
VREF-AC0
/IN0
IN1
VT1
VREF-AC1
/IN1
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25
/Q0
Q0
VCC
SEL
GND
Q1
/Q1
VCC
Q5
/Q5
VCC
NC
GND
/Q4
Q4
VCC
32-Pinī˜ƒMLFĀ®ī˜ƒ(MLF-32)
TRUTHī˜ƒTABLE
SEL
0 IN0 Input Selected
1 IN1 Input Selected
Ordering Information(1)
Package Operating Package Lead
Partī˜ƒNumberī˜ƒ Typeī˜ƒ Rangeī˜ƒ Markingī˜ƒ Finish
SY58035UMI MLF-32 Industrial SY58035U Sn-Pb
SY58035UMITR(2) MLF-32 Industrial SY58035U Sn-Pb
SY58035UMG(3) MLF-32 Industrial SY58035U with NiPdAu
Pb-Free bar-line indicator Pb-Free
SY58035UMGTR(2, 3) MLF-32 Industrial SY58035U with NiPdAu
Pb-Free bar-line indicator Pb-Free
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A = 25Ā°C, DC electricals only.
2. Tape and Reel.
3. Pb-Free package recommended for new designs.
3
Precision EdgeĀ®
SY58035U
Micrel, Inc.
M9999-073010
hbwhelp@micrel.com or (408) 955-1690
Absoluteī˜ƒMaximumī˜ƒRatings(1)
Power Supply Voltage (VCC ) .......................ā€“0.5V to +4.0V
Input Voltage (VIN) ...........................................ā€“0.5V to V
CC
LVPECL Output Current (IOUT)
Continuous ............................................................. 50mA
Surge .................................................................... 100mA
Termination Current
Source or sink current on VT pin......................... Ā±100mA
Input Current
Source or sink current on IN, /IN pin .................... Ā±50mA
Source or sink current on VREF-AC pin ................. Ā±2mA
Lead Temperature (soldering, 10 sec.) ...................... 220Ā°C
Storage Temperature Range (T S ) ............ ā€“65Ā°C to +150Ā°C
Operating Ratings(2)
Power Supply Voltage (VCC) ............... +2.375V to +2.625V
............................................................. +3.0V to +3.6V
Ambient Temperature Range (TA) .............. ā€“40Ā°C to +85Ā°C
Package Thermal Resistance(3)
MLFĀ®ī˜ƒ(ĪøJA)
Still-Air ............................................................. 35Ā°C/W
MLFĀ®ī˜ƒ(ĻˆJB)
Junction-to-Board ............................................ 16Ā°C/W
Symbolī˜ƒ Parameterī˜ƒ Conditionī˜ƒ Minī˜ƒ Typī˜ƒ Maxī˜ƒ Units
VCC Power Supply Voltage 2.375 2.5 2.625 V
3.0 3.3 3.6 V
ICC Power Supply Current No load, max. VCC 185 250 mA
RDIFF_INī˜ƒ Differentialī˜ƒInputī˜ƒResistanceī˜ƒ ī˜ƒ 90ī˜ƒ 100ī˜ƒ 110ī˜ƒ Ī©
(IN-to-/IN)
RIN Input Resistance (IN-to-VT)ī˜ƒ ī˜ƒ 45ī˜ƒ 50ī˜ƒ 55ī˜ƒ Ī©
VIH Input HIGH Voltage (IN, /IN) V CCā€“1.2 VCC V
VIL
Input LOW Voltage (IN, /IN) 0 V IHā€“0.1 V
VIN Input Voltage Swing (IN, /IN) See Figure 1a 0.1 1.7 V
VDIFF_IN Differential Input Voltage Swing See Figure 1b 0.2 mV
|IN, /IN|
VT IN IN to VT (IN, /IN) 1.28 V
VREF-AC Reference Voltage V
CCā€“1.3 VCCā€“1.2 VCCā€“1.1 V
Notes:
1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied
at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings conditions for extended
periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3.ī˜ƒ Thermalī˜ƒperformanceī˜ƒassumesī˜ƒexposedī˜ƒpadī˜ƒisī˜ƒsolderedī˜ƒ(orī˜ƒequivalent)ī˜ƒtoī˜ƒtheī˜ƒdeviceā€™sī˜ƒmostī˜ƒnegativeī˜ƒpotentialī˜ƒonī˜ƒtheī˜ƒPCB.ī˜ƒĪØ
JBī˜ƒandī˜ƒĪø
JA are shown
for a 4-layer PCB in a still air environment, unless otherwise stated.
4.ī˜ƒ Theī˜ƒcircuitī˜ƒisī˜ƒdesignedī˜ƒtoī˜ƒmeetī˜ƒtheī˜ƒDCī˜ƒspeciīšæcationsī˜ƒshownī˜ƒinī˜ƒtheī˜ƒaboveī˜ƒtableī˜ƒafterī˜ƒthermalī˜ƒequilibriumī˜ƒhasī˜ƒbeenī˜ƒestablished.
5. VIH (min) not lower than 1.2V.
DCī˜ƒELECTRICALī˜ƒCHARACTERISTICS(4)
TA= ā€“40Ā°C to +85Ā°C, unless otherwise stated.

Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: SY58035U

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