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General Description
The MAX9178 quad low-voltage differential signaling
(LVDS) line driver with high-ESD tolerance is ideal for
applications requiring high data rates and low power
with reduced noise. The MAX9178 is guaranteed to
transmit data at speeds up to 400Mbps (200MHz) over
controlled impedance of media of approximately 100
.
The transmission media can be printed circuit (PC)
board traces, backplanes, or cables.
The MAX9178 accepts four LVTTL/LVCMOS inputs and
translates them to LVDS output signals. All inputs toler-
ate overshoot of V
CC
+1V and undershoot of -1V. The
EN and
EN
inputs are ANDed together and control the
high-impedance outputs. When the device is disabled,
power drops to ultra-low 12.6mW (typ). Outputs con-
form to the ANSI TIA/EIA-644 LVDS standard.
The MAX9178 operates from a single +3.3V supply,
and is available in a 16-pin TSSOP and 16-pin thin QFN
package with exposed pad. The MAX9178 is specified
for operation from -40°C to +85°C.
Applications
Features
o
Flow-Through Pinout
Simplifies PC Board Layout
Reduces Crosstalk
o
Pin Compatible with DS90LV047A and MAX9123
o
Guaranteed 400Mbps Data Rate
o
Single-Ended Inputs Tolerate 1V
Overshoot/Undershoot
o
250ps Maximum Pulse Skew
o
IEC 61000-4-2 Level 4 ESD Tolerance on LVDS
Outputs
o
Conforms to ANSI TIA/EIA-644 LVDS Standard
o
Single +3.3V Supply
M
Quad LVDS Line Driver with High-ESD
Tolerance and Flow-Through Pinout
________________________________________________________________
Maxim Integrated Products
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.
1
Ordering Information
19-2856; Rev 0; 4/03
*
EP = Exposed pad.
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
16 TSSOP
16 Thin QFN-EP*
MAX9178EUE
MAX9178ETE
Digital Copiers
Laser Printers
Cell Phone Base
Stations
Add/Drop Muxes
Digital Cross-Connects
DSLAMs
Network
Switches/Routers
Backplane
Interconnect
Clock Distribution
107
MAX9178
MAX9122
107
107
107
R
X
LVDS SIGNALS
100
SHIELDED TWISTED CABLE OR MICROSTRIP PC BOARD TRACES
LVTTL/CMOS
DATA INPUT
LVTTL/CMOS
DATA OUTPUT
R
X
R
X
R
X
T
X
T
X
T
X
T
X
Typical Application Circuit
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
TOP VIEW
TSSOP
EN
IN1
IN2
V
CC
GND
IN3
IN4
OUT1-
OUT1+
OUT2+
OUT2-
OUT3-
OUT3+
OUT4+
OUT4-
QFN
16
1
2
3
4
12
11
10
9
15
14
13
5
6
7
8
I
E
O
O
OUT2+
OUT2-
OUT3-
OUT3+
V
CC
GND
EXPOSED PAD
IN3
I
O
O
IN2
MAX9178
MAX9178
EN
E
Pin Configurations
Functional Diagram appears at end of data sheet.