|
|
PDF SY89846U Data sheet ( Hoja de datos )
| Número de pieza | SY89846U | |
| Descripción | LVPECL 1:5 Fanout | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SY89846U (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
SY89846U
1.5GHz Precision, LVPECL 1:5 Fanout with 2:1
MUX and Fail Safe Input with Internal
Termination
General Description
The SY89846U is a 2.5/3.3V, 1:5 LVPECL fanout
buffer with a 2:1 differential input multiplexer (MUX).
A unique Fail-Safe Input (FSI) protection prevents
Features
Precision Edge®
metastable output conditions when the selected • Selects between two inputs, and provides 5 precision
input clock fails to a DC voltage (voltage between
LVPECL copies
the pins of the differential input drops significantly
below 100mV).
• Fail-Safe Input
– Prevents outputs from oscillating when input is
The differential input includes Micrel’s unique, 3-pin
invalid
internal termination architecture that can interface to • Guaranteed AC performance over temperature and
any differential signal (AC- or DC-coupled) as small
supply voltage:
as 100mV (200mVPP) without any level shifting or
– DC-to >1.5GHz throughput
termination resistor networks in the signal path. The
– < 900ps Propagation Delay (IN-to-Q)
outputs are 800mV, LVPECL with fast rise/fall times
guaranteed to be less than 250ps.
– < 250ps Rise/Fall times
• Ultra-low jitter design:
The SY89846U operates from a 2.5V ±5% or 3.3V
±10% supply and is guaranteed over the full
industrial temperature range of –40°C to +85°C. The
SY89846U is part of Micrel’s high-speed, Precision
Edge® product line.
– <1psRMS random jitter
– <1pswww.DataSheet4U.com RMS cycle-to-cycle jitter
– <10psPP total jitter (clock)
– <0.7psRMS MUX crosstalk induced jitter
• Unique, patented MUX input isolation design
All support documentation can be found on Micrel’s
minimizes adjacent channel crosstalk
web site at: www.micrel.com.
• Unique patented internal termination and VT pin
accepts DC- and AC-coupled inputs (CML, PECL,
Functional Block Diagram
LVDS)
• Wide input voltage range. VCC to GND
• 2.5V ±5% or 3.3 ±10% supply voltage
• -40°C to +85°C industrial temperature range
• Available in 32-pin (5mm x 5mm) MLF® package
Applications
• Fail-safe clock protection
• SONET clock distribution
• Backplane distribution
Markets
• LAN/WAN
• Enterprise servers
• ATE
• Test and measurement
Precision Edge is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technology
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
March 2007
M9999-031307-B
[email protected] or (408) 955-1690
1 page  
Micrel, Inc.
SY89846U
LVPECL Outputs DC Electrical Characteristics(7)
VCC = 2.5V ±5% or 3.3V ±10%; RL = 50Ω to VCC-2V; TA = –40°C to + 85°C, unless otherwise stated.
Symbol Parameter
Condition
Min Typ Max
VOH
VOL
VOUT
VDIFF_OUT
Output HIGH Voltage
Output LOW Voltage
Output Voltage Swing
Differential Output Voltage Swing
Q, /Q
Q, /Q
See Figure 2a.
See Figure 2b.
VCC-1.145
VCC-1.945
550
1100
800
1600
VCC-0.895
VCC-1.695
950
Units
V
V
mV
mV
LVTTL/CMOS DC Electrical Characteristics(7)
VCC = 2.5V ±5% or 3.3V ±10%; TA = –40°C to + 85°C, unless otherwise stated.
Symbol Parameter
Condition
Min Typ Max
VIH Input HIGH Voltage
VIL Input LOW Voltage
IIH Input HIGH Current
IIL Input LOW Current
2.0
-125
-300
0.8
30
Note:
7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
Units
V
V
µA
µA
March 2007
5 M9999-031307-A
[email protected] or (408) 955-1690
5 Page 
Micrel, Inc.
Functional Characteristics
VCC = 3.3V, GND = 0V, VIN ≥ 400mV, tr/tf ≤ 300ps, RL = 50Ω to VCC-2V; TA = 25°C, unless otherwise stated.
SY89846U
March 2007
11 M9999-031307-A
[email protected] or (408) 955-1690
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet SY89846U.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SY89846U | LVPECL 1:5 Fanout | 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 |