MAXIM MAX9180 User Manual
General Description
The MAX9180 is a 400Mbps, 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 MAX9180’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 MAX9180 to be placed close to the connector, thereby minimizing stub lengths and reflections on
the bus. The point-to-point connection between the
MAX9180 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
MAX9180’s switching performance guarantees a
400Mbps data rate, but minimizes radiated noise by
guaranteeing 0.5ns minimum output transition time.
The MAX9180 has fail-safe circuitry that sets the output
high for undriven open, short, or terminated inputs.
The MAX9180 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 (BLVDS) driver, and to the MAX9181 data
sheet for a low-jitter, low-noise 400Mbps LVPECL-toLVDS 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
♦ 400Mbps 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
MAX9180
400Mbps, Low-Jitter, Low-Noise LVDS
Repeater in an SC70 Package
________________________________________________________________ Maxim Integrated Products 1
GND
IN+IN-
16OUT+
5V
CC
OUT-
MAX9180
SC70
TOP VIEW
2
34
Pin Configuration
19-2376; Rev 1; 2/04
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
PART
TEMP RANGE
PIN -
TOP
M ARK
MAX9180EXT-T
6 SC70-6
ABH
Typical Operating Circuit appears at end of data sheet.
PA C K A G E
-40°C to +85°C
MAX9180
400Mbps, 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)
PARAMETER
CONDITIONS
U N I T S
LVDS INPUT
Differential Input High Threshold
V
TH
750mV
Differential Input Low Threshold V
TL
-50 -7 mV
0.05V ≤ |V
ID
|
≤ 0.6V -15
Input Current
0.6V < |V
ID
|
≤ 1.2V -20
µA
0.05V ≤ |V
ID
|
≤ 0.6V, V
CC
= 0V -15
Power-Off Input Current
0.6V < |V
ID
|
≤ 1.2V, V
CC
= 0V -20
µA
Input Resistor 1 R
IN1
VCC = 3.6V or 0V, Figure 1 67
kΩ
Input Resistor 2 R
IN2
VCC = 3.6V or 0V, Figure 1 267
kΩ
LVDS OUTPUT
Differential Output Voltage V
OD
Figure 2 250
mV
Change in VOD Between
Complementary Output States
∆V
OD
Figure 2
25 mV
Offset (Common-Mode) Voltage
V
OS
Figure 2
V
Change in VOS for
Complementary Output States
∆V
OS
Figure 2
25 mV
Output High Voltage V
OH
1.6 V
Output Low Voltage V
OL
0.9
V
Fail-Safe Differential Output
Voltage
V
OD+
IN+, IN- shorted, open, or parallel
terminated
mV
-10
Power-Off Output Leakage
Current
O U T- = 3.6V , other outp ut op en -10
µA
Differential Output Resistance
VCC = 3.6V or 0V 100
Ω
VID = 50mV, OUT+ = GND -5 -15
Output Short Current I
SC
VID = -50mV, OUT- = GND -5 -15
mA
POWER SUPPLY
Supply Current I
CC
Output loaded 10 15
mA
Supply Current in Fail-Safe I
CCF
Output loaded, input undriven 6 8
mA
SYMBOL
MIN TYP MAX
I
, I
IN+
IN-
I
, I
IN+
IN-
IO
RO
OFF
VCC = 0V
DIFF
O U T+ = 3.6V , other outp ut op en
1.125 1.25 1.375
+250 +360 +450
-2.5 +15
-3.5 +20
+1.3 +15
+2.6 +20
232
1174
360 450
0.008
0.005
1.44
1.08
+0.02 +10
+0.02 +10
260 400
MAX9180
400Mbps, 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 = 200MHz, 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)
PARAMETER
CONDITIONS
Differential Propagation Delay High to
Low
1.3 2.0 2.8 ns
Differential Propagation Delay Low to
High
1.3 2.0 2.8 ns
Added Deterministic Jitter t
DJ
400Mbps 223- 1 PRBS data pattern
(Notes 6, 11)
23
Added Random Jitter t
RJ
fIN = 200MHz (Notes 7, 11) 0.6 2.9
(Note 8)
0.6 ns
Differential Part-to-Part Skew
(Note 9) 1.5 ns
Switching Supply Current
18
Rise Time t
TLH
0.5
1.0 ns
Fall Time t
THL
0.5
1.0 ns
Input Frequency f
MAX
(Note 10) 200
SYMBOL
MIN TYP MAX U N I T S
t
PHLD
t
PLHD
t
SKPP1
t
SKPP2
I
CCSW
0.16
12.2
0.67
0.66
100 ps
P-P
ps
RMS
mA
MHz
Loading...