MAX3768CUB ,+3.0 V to +5.5 V, 1.25 Gbp/2.5Gbp limiting amplifierApplications†MAX3265EUE -40°C to +85°C 16 TSSOP-EP†Gigabit Ethernet Optical ReceiversMAX3268CUB 0°C ..
MAX3768CUB+T ,+3.0V to +5.5V, 1.25Gbps/2.5Gbps Limiting Amplifiersfeatures include RMS power detectors withprogrammable loss-of-signal (LOS) indication, an ♦ Program ..
MAX3770CEE ,2.125Gbps/1.063Gbps / 3.3V Fibre Channel RepeatersFeaturesThe MAX3770 is a 2.125Gbps Fibre Channel repeater Meet Fibre Channel Jitter Tolerance Requ ..
MAX3772CEE ,Dual-Rate Fibre Channel RepeatersMAX3772–MAX377519-2192; Rev 0; 10/01Dual-Rate Fibre Channel Repeaters
MAX3773CEE ,Dual-Rate Fibre Channel RepeatersELECTRICAL CHARACTERISTICS(V = +3.0V to +3.6V, 8B/10B data coding, C = 0.047µF, lock pin loaded wit ..
MAX3773CEE+ ,Dual-Rate Fibre Channel RepeatersFeaturesThe MAX3772–MAX3775 are dual-rate (1.0625Gbps Pin Selectable 1.0625Gbps/2.125Gbps Dual-Rat ..
MAX7359BETG+ ,2-Wire Interfaced Low-EMI Key Switch Controller/GPOApplicationsMAX7359EWA+ -40°C to +85°C 25 WLPCell Phones+Denotes a lead(Pb)-free/RoHS-compliant pac ..
MAX7359ETG+ ,2-Wire Interfaced Low-EMI Key Switch Controller/GPOfeatures autosleep and autowake to fur- ♦ FIFO Queues Up to 16 Debounced Key Eventsther minimize th ..
MAX7359ETG+T ,2-Wire Interfaced Low-EMI Key Switch Controller/GPOFeatures2The MAX7359 I C interfaced peripheral provides micro- ♦ Optional Key Release Detection on ..
MAX735CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM Regulatorsfeatures, along with high efficiency and appli-
cations circuits that lend themselves to miniaturi ..
MAX735CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM RegulatorsFeatures
. Converts +2.7V to +9V In
Negative Output (MAX75
t" to Adjustable
. Converts +4 ..
MAX735CPA ,-5V/Adjustable, Negative-Output,Inverting, Current-mode PWM RegulatorsGeneral Description
The MAX735 and MAX755 are CMOS, inverting switch-
mode regulators with inte ..
MAX3269C-MAX3768CUB
+3.0 V to +5.5 V, 1.25 Gbp/2.5Gbp limiting amplifier
General DescriptionThe 1.25Gbps MAX3264/MAX3268/MAX3768 and the
2.5Gbps MAX3265/MAX3269/MAX3765 limiting ampli-
fiers are designed for Gigabit Ethernet and Fibre
Channel optical receiver systems. The amplifiers accept
a wide range of input voltages and provide constant-
level output voltages with controlled edge speeds.
Additional features include RMS power detectors with
programmable loss-of-signal (LOS) indication, an
optional squelch function that mutes the data output sig-
nal when the input voltage falls below a programmable
threshold, and excellent jitter performance.
The MAX3264/MAX3265/MAX3765 feature current-mode
logic (CML) data outputs that are tolerant of inductive
connectors and a 16-pin TSSOP package, making these
circuits ideal for GBIC receivers. The MAX3268/
MAX3269/MAX3768 feature standards-compliant posi-
tive-referenced emitter-coupled logic (PECL) data out-
puts and are available in a tiny 10-pin µMAX package
that is ideal for small-form-factor (SFF) receivers.
ApplicationsGigabit Ethernet Optical Receivers
Fibre Channel Optical Receivers
System Interconnect
ATM Optical Receivers
Features+3.0V to +5.5V Supply VoltageLow Deterministic Jitter
14ps (MAX3264)
11ps (MAX3265/MAX3765)150ps (max) Edge Speed (MAX3265/MAX3765)
300ps (max) Edge Speed (MAX3264)Programmable Signal-Detect FunctionChoice of CML or PECL Output Interface10-Pin µMAX or 16-Pin TSSOP Package
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers19-1523; Rev 5, 7/03
Ordering Information
Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
Typical Operating Circuits
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(Data outputs terminated per Figure 1, VCC= +3.0V to +5.5V, TA
= 0°C to +70°C. Typical values are at VCC = +3.3V, TA= +25°C,
unless otherwise noted.) (Note 1)
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.
Supply Voltage (VCC)............................................-0.5V to +6.0V
Voltage at IN+, IN-..........................(VCC- 2.4V) to (VCC+ 0.5V)
Voltage at SQUELCH, CAZ1,
CAZ2, LOS, LOS, TH..................................-0.5V to (VCC+ 0.5V)
Voltage at LEVEL...................................................-0.5V to +2.0V
Current into LOS, LOS..........................................-1mA to +9mA
Differential Input Voltage (IN+ - IN-).....................................2.5V
Continuous Current at
CML Outputs (OUT+, OUT-)..........................-25mA to +25mA
Continuous Current at PECL Outputs (OUT+, OUT-).........50mA
Continuous Power Dissipation (TA= +70°C)
16-Pin TSSOP (derate 27mW/°C above +70°C).........2162mW
10-Pin µMAX (derate 20mW/°C above +70°C)...........1600mW
Operating Ambient Temperature Range.............-40°C to +85°C
Storage Temperature Range.............................-55°C to +150°C
Processing Temperature (dice).......................................+400°C
Lead Temperature (soldering, 10s).................................+300°C
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers
ELECTRICAL CHARACTERISTICS (continued)(Data outputs terminated per Figure 1, VCC= +3.0V to +5.5V, TA
= 0°C to +70°C. Typical values are at VCC = +3.3V, TA= +25°C,
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers
Note 1:Specifications for Input Voltage Range, LOS Assert/Deassert Levels, and CML Output Voltage refer to the total differential
peak-to-peak signal applied or measured. PECL output voltages are absolute (single-ended) voltages measured at a single
output.
Note 2:Input edge speed is controlled using four-pole, lowpass Bessel filters with bandwidth approximately 75% of the maximum
data rate.
Note 3:Deterministic jitter is measured with a K28.5 pattern (0011 1110 1011 0000 0101). Deterministic jitter is the peak-to-peak
deviation from ideal time crossings, measured at the zero-level crossings of the differential output per ANSI X3.230,
Annex A.
Note 4:Random jitter is measured with the minimum input signal applied after filtering with a four-pole, lowpass, Bessel filter (fre-
quency bandwidth at 75% of the maximum data rate). For Fibre Channel and Gigabit Ethernet applications, the peak-to-
peak random jitter is 14.1-times the RMS random jitter.
Note 5:Input signal applied after a 933MHz Bessel filter.
Note 6:Input signal applied after a 1.8GHz Bessel filter.
Note 7:Input for LOS assert/deassert and hysteresis tests is a repeating K28.5 pattern. Hysteresis is defined as:
20log (VLOS-DEASSERT / VLOS-ASSERT).
Note 8:Response time to a 10dB change in input power.
ELECTRICAL CHARACTERISTICS—MAX3265EUE(Data outputs terminated per Figure 1, VCC= +3.0V to +5.5V, TA
= -40°C to +85°C. Typical values are at VCC = +3.3V, TA= +25°C,
unless otherwise noted.) (Note 1)
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Limiting Amplifiers20040060080010001200
MAX3264/MAX3268/MAX3768
DETERMINISTIC JITTER
vs. INPUT AMPLITUDEMAX3264/5/8/9 TOC04
INPUT AMPLITUDE (mV)
JITTER (ps)1020304050
MAX3264/MAX3268/MAX3768
RANDOM JITTER
vs. INPUT AMPLITUDEMAX3264/5/8/9 TOC05
INPUT AMPLITUDE (mV)
RMS JITTER (ps)
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX3264/5/8/9 TOC01a
INPUT VOLTAGE (mV)
OUTPUT VOLTAGE (mV)
MAX3264
LOS HYSTERESIS vs. TEMPERATURE
MAX3264/5/8/9 TOC03a
TEMPERATURE (°C)
LOS HYSTERESIS (dB)20040060080010001200
MAX3265/MAX3269/MAX3765
DETERMINISTIC JITTER
vs. INPUT AMPLITUDEMAX3264/5/8/9 TOC06
INPUT AMPLITUDE (mV)
JITTER (ps)1020304050
MAX3265/MAX3269/MAX3765
RANDOM JITTER
vs. INPUT AMPLITUDEMAX3264/5/8/9 TOC07
INPUT AMPLITUDE (mV)
RMS JITTER (ps)
VIN
VOUT
VLOS
LOSS OF SIGNAL WITH SQUELCHMAX3264/5/8/9 TOC08
500ns/div
300mV/div
200ps/div
MAX3268/MAX3768
DATA OUTPUT EYE DIAGRAM
(MINIMUM INPUT)MAX3264/5/8/9 TOC09
Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
