max9129euet Maxim Integrated Products, Inc., max9129euet Datasheet

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max9129euet

Manufacturer Part Number
max9129euet
Description
Max9129 Quad Bus Lvds Driver With Flow-through Pinout
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
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 27Ω 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.
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.
Cell Phone Base Stations
Add/Drop Muxes
Digital Cross-Connects
DSLAMs
Network Switches/Routers
Backplane Interconnect
Clock Distribution
R
t
MAX9129
CARD 1A
________________________________________________________________ Maxim Integrated Products
R
MAX9121
t
General Description
BUS A
BUS B
Applications
MAX9129
MULTIPOINT FULL-DUPLEX TRANSMIT AND RECEIVE BUS
CARD 10A
MAX9121
Quad Bus LVDS Driver with
o Drive LVDS Levels into a 27Ω Load
o 1ns (0% to 100%) Minimum Transition Time
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
o Single +3.3V Supply
Functional Diagram appears at end of data sheet.
Pin Configurations appear at end of data sheet.
MAX9129EGE
MAX9129EUE
MAX9129
Reduces Reflections
than TSSOP)
Flow-Through Pinout
PART
CARD 1B
Typical Applications Circuit
MAX9121
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
MAX9129
CARD 2B
R
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R
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MAX9121
= TERMINATION
RESISTOR
16 QFN
16 TSSOP
PIN-PACKAGE
Features
R
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1

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max9129euet Summary of contents

Page 1

Rev 0; 8/01 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% ...

Page 2

Quad Bus LVDS Driver with Flow-Through Pinout ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +4.0V CC IN_, EN GND....................................-0. OUT_+, OUT_- to GND..........................................-0.3V to +4.0V Short-Circuit Duration (OUT_+, OUT_-) .....................Continuous Continuous Power Dissipation (T = ...

Page 3

AC ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V 27Ω ±1 are +3.3V +25°C.) (Notes PARAMETER SYMBOL Differential Propagation Delay High to Low Differential Propagation Delay ...

Page 4

Quad Bus LVDS Driver with Flow-Through Pinout (MAX9129EUE (TSSOP package +3.3V OUTPUT HIGH VOLTAGE vs. SUPPLY VOLTAGE 1.48 1.47 1.46 1.45 1.44 3.0 3.3 3.6 SUPPLY VOLTAGE (V) OUTPUT HIGH-IMPEDANCE CURRENT vs. SUPPLY VOLTAGE 430 V ...

Page 5

V CC SUPPLY CURRENT vs. TEMPERATURE -40 - TEMPERATURE (°C) DIFFERENTIAL SKEW vs. SUPPLY VOLTAGE 3.0 3.3 SUPPLY VOLTAGE (V) ...

Page 6

Quad Bus LVDS Driver with Flow-Through Pinout PIN NAME QFN TSSOP IN_ GND 10, 11 12, 13, ...

Page 7

V CC IN_ GND EN GENERATOR EN 50Ω 1/4 MAX9129 Figure 4. Driver High-Impedance Delay Test Circuit EN WHEN OPEN EN WHEN OUT_+ WHEN IN_ = V CC OUT_- WHEN IN_ = ...

Page 8

Quad Bus LVDS Driver with Flow-Through Pinout The reduction in characteristic impedance is approxi- mated by the following formula ✕ SQRT [C DIFF-loaded DIFF-unloaded C / L)] L where unloaded differential characteristic im- DIFF-unloaded pedance ...

Page 9

EN IN1 IN2 V CC GND IN3 IN4 EN Figure 6. Suggested Layout for QFN Package Chip Information TRANSISTOR COUNT: 948 PROCESS: CMOS _______________________________________________________________________________________ Quad Bus LVDS Driver with Flow-Through Pinout OUT1- OUT1+ GND OUT2+ OUT2- OUT3- OUT3+ OUT4+ OUT4- ...

Page 10

Quad Bus LVDS Driver with Flow-Through Pinout TOP VIEW EN 1 IN1 2 IN2 GND 5 IN3 6 IN4 Functional Diagram IN1 IN2 IN3 IN4 EN MAX9129 EN 10 ______________________________________________________________________________________ 16 OUT1- GND ...

Page 11

Quad Bus LVDS Driver with ______________________________________________________________________________________ Flow-Through Pinout Package Information 11 ...

Page 12

Quad Bus LVDS Driver with Flow-Through Pinout 12 ______________________________________________________________________________________ Package Information (continued) ...

Page 13

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim ...

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