MAX9124 Maxim, MAX9124 Datasheet

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MAX9124

Manufacturer Part Number
MAX9124
Description
The MAX9124 quad low-voltage differential signaling (LVDS) line driver is ideal for applications requiring high data rates, low power, and low noise
Manufacturer
Maxim
Datasheet

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The MAX9124 quad low-voltage differential signaling
(LVDS) line driver is ideal for applications requiring high
data rates, low power, and low noise. The MAX9124 is
guaranteed to transmit data at speeds up to 800Mbps
(400MHz) over controlled impedance media of approxi-
mately 100Ω. The transmission media may be printed
circuit (PC) board traces, backplanes, or cables.
The MAX9124 accepts four LVTTL/LVCMOS input levels
and translates them to LVDS output signals. Moreover,
the MAX9124 is capable of setting all four outputs to a
high-impedance state through two enable inputs, EN and
EN, thus dropping the device to an ultra-low-power state
of 16mW (typ) during high impedance. The enables are
common to all four transmitters. Outputs conform to the
ANSI TIA/EIA-644 LVDS standard.
The MAX9124 operates from a single +3.3V supply and is
specified for operation from -40°C to +85°C. It is available
in 16-pin TSSOP and SO packages. Refer to the MAX9125/
MAX9126 data sheet for quad LVDS line receivers.
19-1991; Rev 0; 4/01
* Future product—contact factory for availability.
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.
Digital Copiers
Laser Printers
Cell Phone Base
Stations
Add/Drop Muxes
Digital Cross-Connects
TOP VIEW
OUT1+
OUT2+
OUT1-
OUT2-
GND
________________________________________________________________ Maxim Integrated Products
IN1
IN2
EN
1
2
6
3
4
5
7
8
General Description
TSSOP/SO
MAX9124
Pin Configuration
DSLAMs
Network
Switches/Routers
Backplane
Interconnect
Clock Distribution
Applications
16
15
14
13
12
11
10
9
V
IN4
OUT4+
OUT4-
EN
OUT3-
OUT3+
IN3
CC
o Pin Compatible with DS90LV031A
o Guaranteed 800Mbps Data Rate
o 250ps Maximum Pulse Skew
o Conforms to TIA/EIA-644 LVDS Standard
o Single +3.3V Supply
o 16-Pin TSSOP and SO Packages
Quad LVDS Line Driver
LVTTL/LVCMOS
DATA INPUT
MAX9124EUE
MAX9124ESE
PART
100Ω SHIELDED TWISTED CABLE OR MICROSTRIP PC BOARD TRACES
Typical Applications Circuit
MAX9124
T
T
T
T
X
X
X
X
LVDS SIGNALS
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
115Ω
115Ω
115Ω
115Ω
MAX9126
R
R
R
R
PIN-PACKAGE
16 TSSOP
16 SO
X
X
X
X
Features
LVTTL/LVCMOS
DATA OUTPUT
1

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MAX9124 Summary of contents

Page 1

... The MAX9124 accepts four LVTTL/LVCMOS input levels and translates them to LVDS output signals. Moreover, the MAX9124 is capable of setting all four outputs to a high-impedance state through two enable inputs, EN and EN, thus dropping the device to an ultra-low-power state of 16mW (typ) during high impedance ...

Page 2

... SO (derate 8.7mW/°C above +70°C)................696mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

... Enable Time Z to High Enable Time Z to Low Maximum Operating Frequency (Note 11) Note 1: Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are 100% tested +25°C. A Note 2: Currents into the device are positive, and current out of the device is negative. All voltages are referenced to ground except V ...

Page 4

Quad LVDS Line Driver (T = +25°C) A SINGLE-ENDED OUTPUT VOLTAGE vs. LOAD RESISTANCE (R = 50Ω TO 400Ω) L 2.10 1.90 1.70 1. +3. +3.0V CC 1.10 0.90 0.70 0.50 0.30 50 100 ...

Page 5

... This device accepts LVTTL/LVCMOS input levels and translates them to LVDS output signals. The MAX9124 generates a 2.5mA to 4.0mA output cur- rent using a current-steering configuration. This current- steering approach induces less ground bounce and no shoot-through current, enhancing noise margin and sys- tem speed performance ...

Page 6

... OS IN_ OUT_ - OUT_+ V DIFF 20% Figure 3. Driver Propagation Delay and Transition Time Waveforms V CC IN_ GND EN GENERATOR EN 50Ω 1/4 MAX9124 Figure 4. Driver High-Impedance Delay Test Circuit 6 _______________________________________________________________________________________ GENERATOR Figure 2. Driver Propagation Delay and Transition Time Test Circuit 1.5V 1. PLHD PHLD 0 DIFFERENTIAL ...

Page 7

EN WHEN WHEN OUT_+ WHEN IN_ = V CC OUT_- WHEN IN_ = 0 OUT_+ WHEN IN_ = 0 OUT_- WHEN IN_ = V CC Figure 5. Driver High-Impedance Delay Waveform Functional ...

Page 8

Quad LVDS Line Driver 8 _______________________________________________________________________________________ Package Information ...

Page 9

... 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 Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © ...

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