|
|
PDF SY89859U Data sheet ( Hoja de datos )
| Número de pieza | SY89859U | |
| Descripción | Precision Low-Power 8:1 MUX | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SY89859U (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
SY89859U
Precision Low-Power 8:1 MUX with Internal
Termination and 1:2 LVPECL Fanout Buffer
General Description
The SY89859U is a low jitter, low-power, high-speed
8:1 multiplexer with a 1:2 differential fanout buffer
optimized for precision telecom and enterprise server
distribution applications. The SY89859U distributes
Features
Precision Edge®
clock frequencies from DC to >2.5GHz, and data rates
to 2.5Gbps guaranteed over temperature and voltage.
• Selects between 1 of 8 inputs, and provides 2
precision, low skew 100K-compatible LVPECL
The SY89859U differential input includes Micrel’s
output copies
unique, 3-pin input termination architecture that
directly interfaces to any differential signal (AC- or
DC-coupled) as small as 100mV (200mVpp) without
level shifting or termination resistor networks in the
signal path. The outputs are 800mV, 100K-compatible
LVPECL with extremely fast rise/fall time guaranteed
to be less than 180ps.
• Low power: 150mW typ. (2.5V)
• Guaranteed AC performance over temperature and
voltage:
– DC to >2.5Gbps
– DC to >2.5GHz
– <690ps propagation delay
The SY89859U features a patent-pending isolation
– <180ps tr/tf time
design that significantly improves on channel-to-
– <20ps skew (output-to-output)
channel crosstalk-induced jitter performance.
•www.DataSheet4U.com Unique, patent-pending channel-to-channel
The SY89859U operates from a 2.5V ±5% or 3.3V
isolation design provides superior crosstalk
±10% supply and is guaranteed over the full industrial
performance
temperature range of –40°C to +85°C. The SY89859U
is part of Micrel’s high-speed, Precision Edge® product
line.
All support documentation can be found on
Micrel’s web site at: www.micrel.com.
• Ultra-low jitter design:
– <1psRMS random jitter
– <10psPP deterministic jitter
– <10psPP total jitter (clock)
– <1psRMS cycle-to-cycle jitter
– <0.7psRMS crosstalk-induced jitter
• Unique, patented input termination and VT pin
accepts DC- and AC-coupled inputs (CML, PECL,
LVDS)
• Power supply 2.5V ±5% or 3.3V ±10%
• –40°C to +85°C industrial temperature range
• Available in 44-pin (7mm x 7mm) MLF® package
Precision Edge is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technology.
Applications
• Data communication systems
• All SONET/SDH data/clock applications
• All Fibre Channel applications
• All Gigabit Ethernet applications
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2007
M9999-022007-B
[email protected] or (408) 955-1690
1 page  
Micrel, Inc.
Absolute Maximum Ratings(1)
Supply Voltage (VCC) .......................... –0.5V to +4.0V
Input Voltage
SEL0, SEL1, SEL2 .......................... –0.5V to VCC
IN0, /IN0, IN1, /IN1,…/IN7, /IN7 ...... –0.5V to VCC
LVPECL Output Current (IOUT)
Continuous................................................±50mA
Surge ......................................................±100mA
Termination Current
Source or sink current
VT0, VT1, VT2,…VT7.............................±100mA
Input Current
Source or sink current
IN0, /IN0, IN1, /IN1,…IN7, /IN7 ................±50mA
VREF Output Current
VREF-AC0, VREF-AC1…, VREF-AC3.......±2mA
Lead Temperature (soldering, 20 sec.) .......... +260°C
Storage Temperature (Ts) ................. –65°C to 150°C
SY89859U
Operating Ratings(2)
Supply Voltage (VCC).................. +2.375V to +2.625V
.................................................+3.0V to +3.6V
APmacbkiaegnet TTehmerpmeraal tRureesi(sTtAa)n.c..e..(.3.)......... –40°C to +85°C
MLF® (θJA)
Still-Air ................................................ 24°C/W
MLF® (ψJB)
Junction-to-Board ............................... 12°C/W
DC Electrical Characteristics(4)
TA = –40°C to +85°C, unless otherwise stated.
Symbol
VCC
Parameter
Power Supply
Condition
Min
2.375
3.0
Typ
2.5
3.3
Max
2.625
3.6
Units
V
V
ICC
RIN
RDIFF_IN
Power Supply Current
Input Resistance (IN-to-VT)
Differential Input Resistance
(IN-to-/IN)
No load, max. VCC
60
45 50
90 100
85 mA
55 Ω
110 Ω
VIH Input High Voltage
(IN, /IN)
VIL Input Low Voltage
(IN, /IN)
VCC–1.2
0
VCC
VIH–0.1
V
V
VIN Input Voltage Swing
(IN, /IN)
See Figure 1a.
0.1
1.7 V
VDIFF_IN
Differential Input Voltage Swing
|IN-to-/IN|
See Figure 1b.
0.2
V
VT_IN
IN-to-VT
(IN, /IN)
1.28 V
VREF-AC
Output Reference Voltage
VCC–1.3
VCC–1.2
VCC–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. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. θJA and
ΨJB values are determined for a 4-layer board in still-air, unless otherwise stated.
4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
February 2007
5 M9999-022007-B
[email protected] or (408) 955-1690
5 Page 
Micrel, Inc.
LVPECL Output Interface Applications
LVPECL has high input impedance, very low output
(open emitter) impedance, and small signal swing
which result in low EMI. LVPECL is ideal for driving
50Ω- and 100Ω-controlled impedance transmission
lines. There are several techniques for terminating
SY89859U
the LVPECL output including: Parallel Termination-
Thevenin Equivalent, Parallel Termination (3-
Resistor), and AC-Coupled Termination. Unused
output pairs may be left floating. However, single-
ended outputs must be terminated, or balanced.
Figure 4a. Parallel Thevenin-Equivalent
Termination
Note:
For 2.5V system, R1 = 250Ω, R2 = 62.5Ω.
Figure 4b. Parallel Termination
(3-Resistor)
Note:
For 2.5V system, Rb = 19Ω.
Related Product and Support Documentation
Part Number
SY58037U
SY58038U
SY58039U
HBW Solutions
Function
Ultra Precision 8:1 MUX with Internal
Termination and 1:2 CML Fanout Buffer
Ultra Precision 8:1 MUX with Internal
Termination and 1:2 LVPECL Fanout Buffer
Ultra Precision 8:1 MUX with Internal
Termination and 1:2 400mV LVPECL Fanout
Buffer
New Products and Applications
MLF® Application Note
Data Sheet Link
http://www.micrel.com/product-info/products/sy58037u.shtml
http://www.micrel.com/product-info/products/sy58038u.shtml
http://www.micrel.com/product-info/products/sy58039u.shtml
www.micrel.com/product-info/products/solutions.shtml
www.amkor.com/products/notes_papers/MLFAppNote.pdf
February 2007
11 M9999-022007-B
[email protected] or (408) 955-1690
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet SY89859U.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SY89859U | Precision Low-Power 8:1 MUX | Micrel Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |