MAXIM MAX9155 User Manual
General Description
The MAX9155 is a low-voltage differential signaling
(LVDS) repeater, which accepts a single LVDS input
and duplicates the signal at a single LVDS output. Its
low-jitter, low-noise performance makes it ideal for
buffering LVDS signals sent over long distances or
noisy environments, such as cables and backplanes.
The MAX9155’s tiny size makes it especially suitable for
minimizing stub lengths in multidrop backplane applications. The SC70 package (half the size of a SOT23)
allows the MAX9155 to be placed close to the connector, thereby minimizing stub lengths and reflections on
the bus. The point-to-point connection between the
MAX9155 output and the destination IC, such as an
FPGA or ASIC, allows the destination IC to be located
at greater distances from the bus connector.
Ultra-low, 23ps
p-p
added deterministic jitter and
0.6ps
RMS
added random jitter ensure reliable communication in high-speed links that are highly sensitive to
timing errors, especially those incorporating clock-anddata recovery, PLLs, serializers, or deserializers. The
MAX9155’s switching performance guarantees a
200Mbps data rate, but minimizes radiated noise by
guaranteeing 0.5ns minimum output transition time.
The MAX9155 has fail-safe circuitry that sets the output
high for undriven open, short, or terminated inputs.
The MAX9155 operates from a single +3.3V supply and
consumes only 10mA over a -40°C to +85°C temperature range. Refer to the MAX9129 data sheet for a quad
bus LVDS driver, and to the MAX9156 data sheet for a
low-jitter, low-noise LVPECL-to-LVDS level translator in
an SC70 package.
Applications
Cellular Phone Base Stations
DSLAMs
Digital Cross-Connects
Add/Drop Muxes
Network Switches/Routers
Multidrop Buses
Cable Repeaters
Features
♦ Tiny SC70 Package
♦ Ultra-Low Jitter
23ps
p-p
Added Deterministic Jitter
(2
23
-1 PRBS)
0.6ps
RMS
Added Random Jitter
♦ 0.5ns (min) Transition Time Minimizes Radiated
Noise
♦ 200Mbps Guaranteed Data Rate
♦ Fail-Safe Circuit Sets Output High for Undriven
Inputs (Open, Terminated, or Shorted)
♦ Low 10mA Supply Current
♦ Low 6mA Supply Current in Fail-Safe
♦ Conforms to ANSI/EIA/TIA-644 LVDS Standard
♦ High-Impedance Inputs and Outputs in
Power-Down Mode
MAX9155
Low-Jitter, Low-Noise LVDS
Repeater in an SC70 Package
________________________________________________________________ Maxim Integrated Products 1
Pin Configuration
19-2213; Rev 0; 10/01
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.
Ordering Information
Typical Operating Circuit appears at end of data sheet.
PART TEMP. RANGE
MAX9155EXT-T -40°C to +85°C 6 SC70-6 ABC
PIN -
PA C K A G E
TOP
M ARK
TOP VIEW
1 6 OUT+
OUT-
GND
2
34
MAX9155
5V
CC
IN+IN-
SC70
MAX9155
Low-Jitter, Low-Noise LVDS
Repeater in an SC70 Package
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
VCCto GND...........................................................-0.3V to +4.0V
IN+, IN- to GND.....................................................-0.3V to +4.0V
OUT+, OUT- to GND .............................................-0.3V to +4.0V
Short-Circuit Duration (OUT+, OUT-) .........................Continuous
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
ESD Protection
Human Body Model, IN+, IN-, OUT+, OUT- ....................±8kV
Lead Temperature (soldering, 10s) .................................+300°C
DC ELECTRICAL CHARACTERISTICS
(VCC= +3.0V to +3.6V, RL= 100Ω ±1%, |V
ID
|
= 0.05V to 1.2V, VCM= |VID/ 2|to 2.4V - |VID/ 2|, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at V
CC
= +3.3V, TA= +25°C.) (Notes 1, 2)
LVDS INPUT
Differential Input High Threshold V
Differential Input Low Threshold V
Input Current I
Power-Off Input Current I
Input Resistor 1 R
Input Resistor 2 R
LVDS OUTPUT
Differential Output Voltage V
Change in VOD Between
Complementary Output States
Offset (Common-Mode) Voltage V
Change in VOS for
Complementary Output States
Output High Voltage V
Output Low Voltage V
Fail-Safe Differential Output
Voltage
Power-Off Output Leakage
Current
Differential Output Resistance RO
Output Short Current I
POWER SUPPLY
Supply Current I
Supply Current in Fail-Safe I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N I T S
TH
TL
, I
IN+
IN-
, I
IN+
IN-
IN1
IN2
OD
∆V
OD
OS
∆V
OS
OH
OL
V
OD+
IO
OFF
DIFFVCC
SC
CC
CCF
0.05V ≤ |V
0.6V< |V
0.05V ≤ |V
0.6V < |V
VCC = +3.6V or 0, Figure 1 67 232 kΩ
VCC = +3.6V or 0, Figure 1 267 1174 kΩ
Figure 2 250 360 450 mV
Figure 2 0.008 25 mV
Figure 2 1.125 1.25 1.375 V
Figure 2 0.005 25 mV
IN+, IN- shorted, open, or parallel
terminated
VCC = 0
VID = +50mV, OUT+ = GND -5 -15
VID = -50mV, OUT- = GND -5 -15
Output loaded 10 15 mA
Output loaded, input undriven 6 8 mA
ID
≤ 1.2V, -20 -3.5 20
|
ID
ID
≤ 1.2V, V
|
ID
= +3.6V or 0 100 260 400 Ω
750mV
-50 -7 mV
≤ 0.6V -15 -2.5 15
|
≤0.6V, V
|
O U T+ = 3.6V , other outp ut op en -10 0.02 10
O U T- = 3.6V , other outp ut op en -10 0.02 10
= 0 -15 1.3 15
CC
= 0 -20 2.6 20
CC
1.44 1.6 V
0.9 1.08 V
+250 +360 +450 mV
µA
µA
µA
mA
MAX9155
Low-Jitter, Low-Noise LVDS
Repeater in an SC70 Package
_______________________________________________________________________________________ 3
Note 1: All devices are 100% tested at TA= +25°C. Limits over temperature are guaranteed by design and characterization.
Note 2: Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to ground
except V
TH
, VTL, VOD, and ∆VOD.
Note 3: Guaranteed by design and characterization.
Note 4: Signal generator output (unless otherwise noted): frequency = 100MHz, 50% duty cycle, R
O
= 50Ω, tR= 1.5ns, and tF=
1.5ns (0% to 100%).
Note 5: C
L
includes scope probe and test jig capacitance.
Note 6: Signal generator output for t
DJ
: VOD= 150mV, VOS= 1.2V, tDJincludes pulse (duty-cycle) skew.
Note 7: Signal generator output for t
RJ
: VOD= 150mV, VOS= 1.2V.
Note 8: t
SKPP1
is the magnitude difference of any differential propagation delays between devices operating over rated conditions
at the same supply voltage, input common-mode voltage, and ambient temperature.
Note 9: t
SKPP2
is the magnitude difference of any differential propagation delays between devices operating over rated conditions.
Note 10: Device meets V
OD
DC specification and AC specifications while operating at f
MAX
.
Note 11: Jitter added to the input signal.
AC ELECTRICAL CHARACTERISTICS
(VCC= +3.0V to +3.6V, RL= 100Ω ±1%, CL= 10pF, |V
ID
|
= 0.15V to 1.2V, VCM= |VID/ 2|to 2.4V - |VID/ 2|, TA= -40°C to +85°C,
unless otherwise noted. Typical values are at V
CC
= +3.3V, TA= +25°C.) (Notes 3, 4, 5) (Figures 3, 4)
p-p
Differential Propagation Delay High to
Low
Differential Propagation Delay Low to
High
Added Deterministic Jitter (Notes 6, 11) t
Added Random Jitter (Notes 7, 11) t
Differential Part-to-Part Skew (Note 8) t
Differential Part-to-Part Skew (Note 9) t
Switching Supply Current I
Rise Time t
Fall Time t
Input Frequency (Note 10) f
PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N I T S
t
PHLD
t
PLHD
DJ
RJ
SKPP1
SKPP2
CCSW
TLH
THL
MAX
1.3 2.0 2.8 ns
1.3 2.0 2.8 ns
200Mbps 223-1 PRBS data pattern 23 100 ps
fIN = 100MHz 0.6 2.9 ps
0.17 0.6 ns
1.5 ns
11.3 18 mA
0.5 0.66 1.0 ns
0.5 0.64 1.0 ns
100 MHz
RMS
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