Rainbow-electronics DS90CP22 Manual de usuario

Busca en linea o descarga Manual de usuario para Panel De Control Rainbow-electronics DS90CP22. Rainbow Electronics DS90CP22 User Manual Manual de usuario

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DS90CP22
2X2 800 Mbps LVDS Crosspoint Switch
General Description
DS90CP22 is a 2x2 crosspoint switch utilizing LVDS (Low
Voltage Differential Signaling) technology for low power, high
speed operation. Data paths are fully differential from input
to output for low noise generation and low pulse width dis-
tortion. The non-blocking design allows connection of any
input to any output or outputs. LVDS I/O enable high speed
data transmission for point-to-point interconnects. This de-
vice can be used as a high speed differential crosspoint, 2:1
mux, 1:2 demux, repeater or 1:2 signal splitter. The mux and
demux functions are useful for switching between primary
and backup circuits in fault tolerant systems. The 1:2 signal
splitter and 2:1 mux functions are useful for distribution of
serial bus across several rack-mounted backplanes.
The DS90CP22 accepts LVDS signal levels, LVPECL levels
directly or PECL with attenuation networks.
The individual LVDS outputs can be put into TRI-STATE by
use of the enable pins.
For more details, please refer to the Application Information
section of this datasheet.
Features
n Low jitter 800 Mbps fully differential data path
n 75 ps (typ) of pk-pk jitter with PRBS = 2
23
−1 data
pattern at 800 Mbps
n Single +3.3 V Supply
n Less than 330 mW (typ) total power dissipation
n Non-blocking "’Switch Architecture"’
n Balanced output impedance
n Output channel-to-channel skew is 35 ps (typ)
n Configurable as 2:1 mux, 1:2 demux, repeater or 1:2
signal splitter
n LVDS receiver inputs accept LVPECL signals
n Fast switch time of 1.2ns (typ)
n Fast propagation delay of 1.3ns (typ)
n Receiver input threshold
<
±
100 mV
n Available in 16 lead TSSOP and SOIC packages
n Inter-operates with ANSI/TIA/EIA-644-1995 LVDS
standard
n Operating Temperature: −40˚C to +85˚C
Connection Diagrams
10105305
Order Number DS90CP22M-8 (SOIC)
Order Number DS90CP22MT (TSSOP)
10105310
Diff. Output Eye-Pattern in 1:2 split mode
@
800 Mbps
Conditions: 3.3 V, PRBS = 2
23
−1 data pattern,
V
ID
= 300mV, V
CM
= +1.2 V, 200 ps/div, 100 mV/div
November 2003
2X2 800 Mbps LVDS Crosspoint Switch
© 2003 National Semiconductor Corporation DS101053 www.national.com
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Indice de contenidos

Pagina 1 - DS90CP22

DS90CP222X2 800 Mbps LVDS Crosspoint SwitchGeneral DescriptionDS90CP22 is a 2x2 crosspoint switch utilizing LVDS (LowVoltage Differential Signaling) t

Pagina 2 - Electrical Characteristics

NotesLIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORTDEVICES OR SYSTEMS WITHOUT THE EXPRESS WR

Pagina 3 - AC Electrical Characteristics

Absolute Maximum Ratings (Note 1)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distribut

Pagina 4 - AC Timing Diagrams

AC Electrical CharacteristicsOver recommended operating supply and temperature ranges unless otherwise specified (Note 4)Symbol Parameter Conditions M

Pagina 5

AC Timing Diagrams10105302FIGURE 1. Input-to-Select rising edge setup and hold times and mux switch time10105303FIGURE 2. Input-to-Select falling edge

Pagina 6 - Application Information

AC Timing Diagrams (Continued)10105306FIGURE 4. LVDS Output Load10105309FIGURE 5. LVDS Output Transition Time10105307FIGURE 6. Propagation Delay Low-t

Pagina 7 - Block Diagram

DS90CP22 Pin DescriptionPin Name # of Pin Input/Output DescriptionIN+ 2 I Non-inverting LVDS inputIN - 2 I Inverting LVDS inputOUT+ 2 O Non-inverting

Pagina 8

Block Diagram10105301Function TableSEL0 SEL1 OUT0 OUT1 Mode0 0 IN0 IN0 1:2 splitter0 1 IN0 IN1 repeater1 0 IN1 IN0 switch1 1 IN1 IN1 1:2 splitterNote:

Pagina 9

Typical Performance Characteristics (Continued)Peak-to-Peak Output Jitter at VCM= +0.4V vs. VID10105312Peak-to-Peak Output Jitter at VCM= +1.2V vs. VI

Pagina 10

Physical Dimensions inches (millimeters)unless otherwise notedOrder Number DS90CP22M-8See NS Package Number M16A16-Lead (4.4mm Wide) Molded Thin Shrin

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