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MAX9129 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX9129
Description  Quad Bus LVDS Driver with Flow-Through Pinout
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX9129 Datasheet(HTML) 1 Page - Maxim Integrated Products

 
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General Description
The MAX9129 is a quad bus low-voltage differential sig-
naling (BLVDS) driver with flow-through pinout. This
device is designed to drive a heavily loaded multipoint
bus with controlled transition times (1ns 0% to 100%
minimum) for reduced reflections. The MAX9129
accepts four LVTTL/LVCMOS input levels and trans-
lates them to output levels of 250mV to 450mV (stan-
dard LVDS levels) into a 27
Ω load at speeds up to
200Mbps (100MHz).
The power-on reset ensures that all four outputs are
disabled and high impedance during power up and
power down. The outputs can be set to high imped-
ance by two enable inputs, EN and EN, thus dropping
the device to a low-power state of 11mW. The enables
are common to all four drivers. The flow-through pinout
simplifies PC board layout and reduces crosstalk by
keeping the LVTTL/LVCMOS inputs and BLVDS outputs
separated.
The MAX9129 operates from a single +3.3V supply and
is specified for operation from -40°C to +85°C. It is
available in 16-pin QFN and TSSOP packages. Refer to
the MAX9121 data sheet for a quad LVDS line receiver
with flow-through pinout.
Applications
Cell Phone Base Stations
Add/Drop Muxes
Digital Cross-Connects
DSLAMs
Network Switches/Routers
Backplane Interconnect
Clock Distribution
Features
o Drive LVDS Levels into a 27Ω Load
o 1ns (0% to 100%) Minimum Transition Time
Reduces Reflections
o Guaranteed 200Mbps (100MHz) Data Rate
o Enable Pins for High-Impedance Output
o High-Impedance Outputs when Powered Off
o Glitch-Free Power-Up and Power-Down
o Hot Swappable
o Flow-Through Pinout
o Available in Tiny QFN Package (50% Smaller
than TSSOP)
o Single +3.3V Supply
Quad Bus LVDS Driver with
Flow-Through Pinout
MAX9129
MAX9121
MAX9129
MAX9121
MAX9129
MAX9121
MAX9129
MAX9121
Rt
Rt
Rt
BUS A
BUS B
Rt
CARD 1A
CARD 10A
CARD 1B
CARD 2B
= TERMINATION
RESISTOR
Rt
MULTIPOINT FULL-DUPLEX TRANSMIT AND RECEIVE BUS
Typical Applications Circuit
19-2100; Rev 0; 8/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Functional Diagram appears at end of data sheet.
Pin Configurations appear at end of data sheet.
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX9129EGE
-40°C to +85°C
16 QFN
MAX9129EUE
-40°C to +85°C
16 TSSOP
________________________________________________________________ Maxim Integrated Products
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