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MAX9169EUEMAXIMN/a13avai4-Port LVDS and LVTTL-to-LVDS Repeaters
MAX9170ESEMAXIMN/a2462avai4-Port LVDS and LVTTL-to-LVDS Repeaters


MAX9170ESE ,4-Port LVDS and LVTTL-to-LVDS Repeatersapplications that require high-speed data or clock23630Mbps (2 - 1) PRBS Patterndistribution while ..
MAX9170EUE+ ,4-Port LVDS and LVTTL-to-LVDS RepeatersELECTRICAL CHARACTERISTICS(V = 3.0V to 3.6V, R = 100Ω ±1%, EN_ = high, MAX9169 differential input v ..
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MAX9173EUE+ ,Quad LVDS Line Receiver with Flow-Through Pinout and "In-Path" Fail-Safeapplications requiring♦ Fully Compatible with DS90LV048Ahigh data rates, low power, and low noise. ..
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MAX9169EUE-MAX9170ESE
4-Port LVDS and LVTTL-to-LVDS Repeaters
General Description
The MAX9169/MAX9170 low-jitter, low-voltage differen-
tial signaling LVDS/LVTTL-to-LVDS repeaters are ideal
for applications that require high-speed data or clock
distribution while minimizing power, space, and noise.
The devices accept a single LVDS (MAX9169) or LVTTL
(MAX9170) input and repeat the input at four LVDS out-
puts. Each differential output drives 100Ω, allowing
point-to-point distribution of signals on transmission
lines with 100Ωtermination at the receiver input. The
MAX9169 and MAX9170 are pin compatible with the
SN65LVDS104 and SN65LVDS105, respectively, and
offer improved pulse-skew performance.
Ultra-low 150ps (max) pulse skew and 200psP-P(max)
added deterministic jitter ensure reliable communica-
tion in high-speed links that are highly sensitive to tim-
ing error, especially those incorporating clock-and-data
recovery or serializers and deserializers. The high-
speed switching performance guarantees 630Mbps
data rate and less than 120ps channel-to-channel skew
over the 3.0V to 3.6V operating supply range.
Supply current is 30mA (max) for the MAX9169, and
25mA (max) for the MAX9170. LVDS inputs and outputs
conform to the ANSI EIA/TIA-644 standard. A fail-safe
feature on the MAX9169 sets the output high when the
input is undriven and open, terminated, or shorted. The
MAX9169/MAX9170 are offered in 16-pin TSSOP and
SO packages, and operate over an extended -40°C to
+85°C temperature range.
Refer to the MAX9130 data sheet for an LVDS line
receiver in an SC70 package.
Applications

Point-to-Point Baseband Data Transmission
Cellular Phone Base Stations
Add/Drop Muxes
Digital Cross-Connects
Network Switches/Routers
Backplane Interconnect
Clock Distribution
Features
150ps (max) Pulse Skew200psP-P(max) Added Deterministic Jitter at
630Mbps (223- 1) PRBS Pattern
8psRMS(max) Added Random Jitter120ps (max) Channel-to-Channel Skew630Mbps Data RateConforms to ANSI EIA/TIA-644 LVDS Standard30mA (max) (MAX9169), 25mA (max) (MAX9170)
Supply Current, a 15% Improvement vs.
Competition
LVDS (MAX9169) or +5V Tolerant LVTTL/LVCMOS
(MAX9170) Input Versions
Fail-Safe Circuit Sets Output High for Undriven
Differential Input
Output Rated for 10pF LoadIndividual Output EnablesSingle 3.3V SupplyImproved Second Source of the SN65LVDS104
(MAX9169)/SN65LVDS105 (MAX9170)
16-Pin SO and TSSOP Packages
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters
Ordering Informationypical Application Circuit

19-2616; Rev 0; 10/02
Pin Configurations appear at end of data sheet.
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V to 3.6V, RL= 100Ω±1%, EN_ = high, MAX9169 differential input voltage | VID | = 0.05V to 1.2V, LVDS input common-
mode voltage VCM= | VID/2 | to +2.4V - | VID/2 |, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 3.3V, | VID|
= 0.2V, VCM= 1.25V, TA= +25°C for MAX9169. Typical values are at VCC= 3.3V, VIN= 0 or VCC, TA= +25°C for MAX9170.)
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..............................................................-0.5V to +4V
Inputs
IN+, IN- to GND....................................................-0.5V to +4V
IN, EN_ to GND....................................................-0.5V to +6V
Outputs
OUT_+, OUT_- to GND.........................................-0.5V to +4V
Continuous Power Dissipation (TA= +70°C)
16-Pin SO (derate 8.7mW/°C above +70°C)................696mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C).........755mW
Storage Temperature Range.............................-65°C to +150°C
Maximum Junction Temperature.....................................+150°C
ESD Protection
Human Body Model (MAX9169)
(IN+, IN-, OUT_+, OUT_-)..............................................≥16kV
Human Body Model (MAX9170)
(OUT_+, OUT_-).............................................................≥10kV
Lead Temperature (soldering, 10s).................................+300°C
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters
DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3.0V to 3.6V, RL= 100Ω±1%, EN_ = high, MAX9169 differential input voltage | VID | = 0.05V to 1.2V, LVDS input common-
mode voltage VCM= | VID/2 | to +2.4V - | VID/2 |, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= 3.3V, | VID|
= 0.2V, VCM= 1.25V, TA= +25°C for MAX9169. Typical values are at VCC= 3.3V, VIN= 0 or VCC, TA= +25°C for MAX9170.)
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters

except VTH, VTL, VID, VOD, and ∆VOD.
Note 2:
Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are production
tested at TA= +25°C.
Note 3:
Signal generator output for IN+, IN-, or single-ended IN: VIN= 0.4 sin(4E6πt) + 0.5.
Note 4:
All input pulses are supplied by a generator having the following characteristics: tRor tF≤1ns, pulse repetition rate (PRR) =
0.5 Mpps, pulsewidth = 500 ±10ns.
Note 5:
Guaranteed by design and characterization.
Note 6:
Signal generator output for OUT+ or OUT-: VIN= 0.4 sin(4E6πt) + 0.5, EN_ = low.
Note 7:
CLincludes scope probe and test jig capacitance.
Note 8:
Signal generator output for differential inputs IN+, IN- (unless otherwise noted): frequency = 50MHz, 49% to 51% duty cycle,= 50Ω, tR= 1.0ns, and tF= 1.0ns (0% to 100%). Signal generator output for single-ended input IN (unless otherwise noted):
frequency = 50MHz, 49% to 51% duty cycle, RO= 50Ω, VIH= VCC, VIL= 0V, tR= 1.0ns, and tF= 1.0ns (0% to 100%).
Note 9:
Signal generator output for MAX9169 tDJ: VOH= +1.3V, VOL= +1.1V, data rate = 630Mbps, 223-1 PRBS, RO= 50Ω, = 1.0ns and tF= 1.0ns (0% to 100%). Signal generator output for MAX9170 tDJ: VOH= VCC, VOL= 0V, data rate =
630Mbps, 223-1 PRBS, RO= 50Ω, tR= 1.0ns, and tF= 1.0ns (0% to 100%).
Note 10:
Signal generator output for MAX9169 tRJ: VOH= +1.3V, VOL= +1.1V, frequency = 315MHz, 50% duty cycle, RO= 50Ω,= 1.0ns, and tF= 1.0ns (0% to 100%). Signal generator output for MAX9170 tRJ: VOH= VCC, VOL= 0V, frequency =
315MHz, 50% duty cycle, RO= 50Ω, tR= 1.0ns, and tF= 1.0ns (0% to 100%).
Note 11:
Signal generator output for MAX9169 tSK(P): VOH= +1.4V, VOL= +1.0V, RO= 50Ω, tR= 1.0ns, and tF= 1.0ns (0% to 100%).
Signal generator output for MAX9170 tSK(P): VOH= +3.0, VOL= 0V, RO= 50Ω, tR= 1.0ns, and tF= 1.0ns (0% to 100%).
Note 12:
tSK(0)is the magnitude of the time difference between tPLHor tPHLof all drivers of a single device with all of their inputs
connected together.
Note 13:
tSK(PP)is the magnitude of the difference in propagation delay times between any specified terminals of two devices when
both devices operate with the same supply voltages, at the same temperature, and have identical packages and test circuits.
AC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V to 3.6V, RL= 100Ω±1%, CL= 10pF, EN_ = high, MAX9169 differential input voltage | VID | = 0.15V to 1.2V, LVDS input
common-mode voltage VCM= | VID/2 | to +2.4V - | VID/2 |, TA= -40°C to +85°C, unless otherwise noted. Typical values are at | VID| =
0.2V, VCM= 1.25V, VCC= 3.3V, TA= +25°C for MAX9169. Typical values are at VIN= 0 or VCC, VCC= 3.3V, TA= +25°C for
MAX9170.) (Notes 5, 7, and 8)
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters
MAX9169 SUPPLY CURRENT
vs. FREQUENCY

MAX9169/70 toc01
FREQUENCY (MHz)
SUPPLY CURRENT (mA)
MAX9170 SUPPLY CURRENT
vs. FREQUENCY
MAX9169/70 toc02
FREQUENCY (MHz)
SUPPLY CURRENT (mA)
DIFFERENTIAL OUTPUT AMPLITUDE
vs. FREQUENCY
MAX9169/70 toc03
FREQUENCY (MHz)
DIFFERENTIAL OUTPUT AMPLITUDE (mV)
TRANSITION TIME
vs. TEMPERATURE
MAX9169/70 toc04
TEMPERATURE (°C)
TRANSITION TIME (ns)3510-15
MAX9169 PROPAGATION DELAY
vs. TEMPERATURE
MAX9169/70 toc05
TEMPERATURE (°C)
PROPAGATION DELAY (ns)3510-15
MAX9170 PROPAGATION DELAY
vs. TEMPERATURE
MAX9169/70 toc06
TEMPERATURE (°C)
PROPAGATION DELAY (ns)3510-15
DIFFERENTIAL OUTPUT VOLTAGE
vs. LOAD RESISTOR
MAX9169/70 toc07
LOAD RESISTOR (Ω)
DIFFERENTIAL OUTPUT VOLTAGE (mV)
TRANSITION TIME
vs. CAPACITIVE LOAD
MAX9169/70 toc08
CAPACITIVE LOAD (pF)
TRANSITION TIME (ps)1197
Typical Operating Characteristics
(VCC= 3.3V, RL= 100Ω, CL= 10pF, | VID| = 150mV, VCM= 1.25V, fIN= 50MHz, TA= +25°C, unless otherwise noted.)
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters
Table 1. MAX9169 Input/Output Functions
Table 2. MAX9170 Input/Output Functions
Detailed Description
LVDS is a signaling method for point-to-point and
multidrop data communication over a controlled-imped-
ance medium as defined by the ANSI TIA/EIA-644 and
IEEE 1596.3 standards. LVDS uses a lower voltage swing
than other common standards, achieving higher data
rates with reduced power consumption, while reducing
EMI emissions and system susceptibility to noise.
The MAX9169/MAX9170 are 630Mbps, four-port
repeaters for high-speed, low-power applications. The
MAX9169 accepts an LVDS input and has a fail-safe
input circuit. The MAX9170 features a +5V tolerant sin-
gle-ended LVTTL/LVCMOS input. Both devices repeat
the input at four LVDS outputs. The MAX9169 detects
differential signals as low as 50mV and as high as 1.2V
over a |VID|/2 to 2.4V - |VID|/2 common-mode range.
The MAX9170’s +5V tolerant LVTTL/LVCMOS input
includes circuitry to hold the decision threshold con-
stant at +1.5V over temperature and supply voltage.
The MAX9169/MAX9170 outputs use a current-steering
configuration to generate a 2.5mA to 4.5mA output cur-
rent. This current-steering approach induces less ground
bounce and shoot-through current, enhancing noise
margin and system speed performance. The outputs are
short-circuit current limited and are high impedance
when disabled or when the device is not powered.
The MAX9169/MAX9170 current-steering output requires
a resistive load to terminate the signal and complete the
transmission loop. Because the devices switch the direc-
tion of current flow and not voltage levels, the output volt-
age swing is determined by the value of the termination
resistor multiplied by the output current. With a typical
3.5mA output current, the MAX9169/MAX9170 produce
a 350mV output voltage when driving a transmission line
terminated with a 100Ωresistor (3.5mA ✕100Ω=
350mV). Logic states are determined by the direction of
current flow through the termination resistor.
Fail-Safe Circuitry

The fail-safe feature of the MAX9169 sets the outputs
high when the differential input is:OpenUndriven and shortedUndriven and terminated
Without a fail-safe circuit, when the input is undriven,
noise at the input may switch the outputs and it may
appear to the system that data is being sent. Open or
undriven terminated input conditions can occur when a
cable is disconnected or cut, or when an LVDS driver
output is in high impedance. A shorted input can occur
because of cable failure.
When the input is driven with signals meeting the LVDS
standard, the input common-mode voltage is less than
VCC- 0.3V and the fail-safe circuit is not activated
(Figure 1). If the input is open, undriven and shorted, or
undriven and parallel terminated, an internal resistor in
the fail-safe circuit pulls both the inputs above VCC-
0.3V, activating the fail-safe circuit and forcing the out-
puts high.
Applications Information
Supply Bypassing

Bypass VCCwith high-frequency surface-mount ceram-
ic 0.1µF and 0.001µF capacitors in parallel as close to
the device as possible, with the smaller value capacitor
closest to the VCCpin. Use multiple parallel vias to min-
imize parasitic inductance.
Traces, Cables, and Connectors

The characteristics of differential input and output con-
nections affect the performance of the MAX9169/
MAX9170. Use controlled-impedance traces, cables,
and connectors with matched characteristic impedance.
Ensure that noise couples as common mode by run-
ning the traces of a differential pair close together.
Reduce within-pair skew by matching the electrical
length of the traces of a differential pair. Excessive
skew can result in a degradation of magnetic field can-
cellation. Maintain a constant distance between traces
of a differential pair to avoid discontinuities in differen-
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters

Figure 2. MAX9169 Output Offset Voltage Test Circuitest Circuits and Timing Diagrams
tial impedance. Minimize the number of vias to further
prevent impedance discontinuities.
Avoid the use of unbalanced cables, such as ribbon
cable. Balanced cables, such as twisted pair, offer
superior signal quality and tend to generate less EMI
due to canceling effects. Balanced cables tend to pick
up noise as common mode, which is rejected by the
LVDS receiver.
Termination

The MAX9169/MAX9170 LVDS outputs are specified for
a 100Ωload but can drive 90Ωto 132Ωto accommo-
date various types of interconnect. The termination
resistor at the driven receiver should match the differ-
ential characteristic impedance of the interconnect and
be located close to the receiver input. Use a ±1% sur-
face-mount termination resistor.
Board Layout

A four-layer PC board with separate layers for power,
ground, and LVDS signals is recommended. Keep
LVTTL/LVCMOS signals separated from the LVDS sig-
nals to prevent crosstalk to the LVDS lines.
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters

Figure 3. MAX9169 Differential Output Voltage Test Circuitest Circuits and Timing Diagrams (continued)
Figure 4. MAX9169 Output DC Parameters
MAX9169/MAX9170
4-Port LVDS and LVTTL-to-LVDS Repeaters

Figure 5. MAX9170 Output Offset Voltage Test Circuitest Circuits and Timing Diagrams (continued)
Figure 6. MAX9170 Differential Output Voltage Test Circuit
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