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MAX9601
Dual ECL and Dual/Quad PECL, 500ps, Ultra-High-Speed Comparators
General DescriptionThe MAX9600/MAX9601/MAX9602 ultra-high-speed com-
parators feature extremely low propagation delay
(500ps). These dual and quad comparators minimize
propagation delay skew (10ps) and are designed for low
propagation delay dispersion (30ps). These features
make them ideal for applications where high-fidelity track-
ing of narrow pulses and low timing dispersion is critical.
The differential input stage accepts a wide range of signals
in the common-mode range from (VEE+ 3V) to (VCC- 2V).
The outputs are complementary digital signals, compatible
with ECL and PECL systems, and provide sufficient current
to directly drive transmission lines terminated in 50Ω.
The MAX9600/MAX9601 dual-channel ECL and dual-chan-
nel PECL output comparators incorporate latch enable
(LE_, LE_), and hysteresis (HYS_). The complementary
latch-enable control permits tracking, track-hold, or sample-
hold mode of operations. The latch enables can be driven
with standard ECL logic for MAX9600 and PECL logic for
MAX9601. The MAX9602 quad-channel PECL output
comparator is ideal for high-density packaging in limit-
ed board space.
The MAX9600/MAX9601 are available in 20-pin TSSOP
packages, and the MAX9602 is offered in a 24-pin
TSSOP package. The MAX9600/MAX9601/MAX9602
are specified for operation from -40°C to +85°C.
ApplicationsVLSI and High-Speed Memory ATE
High-Speed Instrumentation
Scope/Logic Analyzer Front Ends
High-Speed Triggering
Threshold and Peak Detection
Line Receiving/Signal Restoration
Features500ps Propagation Delay30ps Propagation Delay Dispersion4Gbps Tracking Frequency-2.2V to +3V Input Range with +5V/-5.2V Supplies-1.2V to +4V Input Range with +6V/-4.2V SuppliesDifferential ECL Outputs (MAX9600)Differential PECL Outputs (MAX9601/MAX9602)Latch Enable (MAX9600/MAX9601)Adjustable Hysteresis (MAX9600/MAX9601)
MAX9600/MAX9601/MAX9602
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
Ordering Information19-2409; Rev 1; 9/02
PARTTEMP RANGEPIN-PACKAGE
MAX9600EUP-40°C to +85°C20 TSSOP
MAX9601EUP-40°C to +85°C20 TSSOP
MAX9602EUG-40°C to +85°C24 TSSOP
Pin Configurations appear at end of data sheet.
Functional DiagramsIN_+Q_
ECL OUTPUT
VT = -2V
LE_RL
IN_-
HYS_
RHYS_
VCCVEEGND
1/2 MAX9600
LE_
IN_+Q_
PECL OUTPUT
VT = VCCO_ - 2V
LE_RL
IN_-
HYS_
RHYS_
VCCVEEVCCO_
1/2 MAX9601
LE_
IN_+Q_
PECL OUTPUT
VT = VCCO_ - 2VRL
IN_-
VCCVEEVCCO_
1/4 MAX9602
THE OPEN-EMITTER OUTPUTS REQUIRE EXTERNAL PULLDOWN RESISTORS (RL). USE RESISTORS IN THE RANGE OF 50Ω TO 75Ω CONNECTED TO VT.
CURRENT-CONTROLLED HYSTERESIS REQUIRES A SINGLE EXTERNAL RESISTOR (RHYS_) FROM HYS_ TO GND IN THE RANGE OF 10kΩ TO 35kΩ.
PARTPIN-PACKAGESELECTIONMAX9600EUP20 TSSOP
Dual ECL Output
Comparator with Latch
Enable and Hysteresis
MAX9601EUP20 TSSOP
Dual PECL Output
Comparator with Latch
Enable and Hysteresis
MAX9602EUG24 TSSOPQuad PECL Output
Comparator
Selector Guide
MAX9600/MAX9601/MAX9602
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
ABSOLUTE MAXIMUM RATINGSStresses 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.= VCC- VEE...................................................................12.0V
VCCto GND (MAX9600) .......................................................6.8V
VEEto GND (MAX9600) ......................................................-6.5V
Differential Input Voltage ...................................................±6.5V
Latch Differential Voltage ......................................................±4V
Common-Mode Input Voltage (VCM) .........................VEEto VCC
VCCO_ to VEE
(MAX9601/MAX9602)....................(VEE- 0.3V) to (VCC+ 0.3V)
LE_, LE_to GND
MAX9600....................................................(VEE- 0.3V) to 0.3V
MAX9601..................................(VEE- 0.3V) to (VCCO_ + 0.3V)
Input Current to Any Input Pin.............................................10mA
HYS_ Current (MAX9600/MAX9601) ...................................-1mA
Continuous Output Current.................................................50mA
Continuous Power Dissipation (TA= +70°C)
20-Pin TSSOP (derate 10.9mW/oC above +70°C)........879mW
24-Pin TSSOP (derate 12.2mW/°C above +70°C)........975mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
INPUT (IN_+, IN_-)Input Differential Voltage RangeVIDGuaranteed by input bias current tests-5.2+5.2V
Input Common-Mode VoltageVCMGuaranteed by input bias current testsVEE + 3VCC - 2V
TA = +25°C±1±5Input Offset VoltageVOSTMIN ≤ TA ≤ TMAX±9mV
Input Offset-Voltage TempcoTCVOS8µV/°C
Input Offset-Voltage Channel
Matching1mV
Input Bias CurrentIBVID = ±5.2V620µA
Input Bias-Current TempcoTCIB10nA/°C
Input Offset CurrentIOS0.3±5µA
Differential mode (VID ≤ 10mV)10kΩInput ResistanceRINCommon mode (VEE + 3V) ≤ VCM ≤ (VCC - 2V)100MΩ
LATCH INPUT (LE_, LE_)MAX96000.42.0Latch Differential Input VoltageVLDGuaranteed by latch
input currentMAX96010.253.50V
MAX9600-20
VCCO_ ≥ 3.5VVCCO_
- 3.5VCCO_Latch Input Voltage RangeVLRMAX9601
VCCO_ < 3.5V0VCCO_
MAX9600520Latch Input CurrentILE, ILEMAX9601520µA
HYSTERESIS INPUT (HYS_)RHYS = ∞0Input-Referred HysteresisMAX9600/MAX9601RHYS = 16.4kΩ30mV
DC ELECTRICAL CHARACTERISTICS(VCC= 5V, VEE= -5.2V, VCM= 0V, HYS_ = open (MAX9600/MAX9601), LE_ = low, LE_= high (MAX9600/MAX9601), GND = 0V, = 50Ωto -2V (MAX9600), VCCO_ = 5V, RL= 50Ωto 3V (MAX9601/MAX9602), TA= TMINto TMAX. Typical values are at = +25°C, unless otherwise noted.) (Note 1)
MAX9600/MAX9601/MAX9602
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
OUTPUT (Q_, Q____)
MAX9600-1.10-0.94-0.75
TA = +25°CMAX9601/MAX9602VCCO_
- 1.10
VCCO_
- 0.94
VCCO_
- 0.75
MAX9600-1.2-1.02-0.8
TA = TMINMAX9601/MAX9602VCCO_
- 1.2
VCCO_
- 1.02
VCCO_
- 0.8
MAX9600-1.05-0.87-0.70
Logic Output High VoltageVOH
TA = TMAXMAX9601/MAX9602VCCO_
- 1.05
VCCO_
- 0.87
VCCO_
- 0.70
MAX9600-1.95-1.72-1.55
TA = +25°CMAX9601/MAX9602VCCO_
- 1.95
VCCO_
- 1.72
VCCO_
- 1.55
MAX9600-2.0-1.78-1.6
TA = TMINMAX9601/MAX9602VCCO_
- 2.0
VCCO_
- 1.78
VCCO_
- 1.6
MAX9600-1.9-1.66-1.50
Logic Output Low VoltageVOL
TA = TMAXMAX9601/MAX9602VCCO_
- 1.9
VCCO_
- 1.66
VCCO_
- 1.5
SUPPLYPositive Supply VoltageVCCGuaranteed by output swing tests4.356.3V
Negative Supply VoltageVEEGuaranteed by output swing tests-6-5.2-4V
Supply Voltage DifferenceVSVS = (VCC - VEE), guaranteed by
output swing tests9.511.5V
Logic Supply VoltageVCCO_MAX9601/MAX96022.4VCCV
MAX96001624
MAX96011927Positive Supply CurrentICC(Note 2)
MAX96022839
MAX96002128
MAX96012433Negative Supply CurrentIEE(Note 2)
MAX96023849
MAX9600190266
MAX9601220307Power-Supply DissipationPDISS(Note 2)
MAX9602338450
Common-Mode Rejection RatioCMRR(VEE + 3V) ≤ VCM ≤ (VCC - 2V)70dB
Power-Supply Rejection RatioPSRR4.3V ≤ VCC ≤ 6.3V, -6V ≤ VEE ≤ -4V,
9.5V ≤ VS ≤ 11.5V65dB
DC ELECTRICAL CHARACTERISTICS (continued)(VCC= 5V, VEE= -5.2V, VCM= 0V, HYS_ = open (MAX9600/MAX9601), LE_ = low, LE_= high (MAX9600/MAX9601), GND = 0V, = 50Ωto -2V (MAX9600), VCCO_ = 5V, RL= 50Ωto 3V (MAX9601/MAX9602), TA= TMINto TMAX. Typical values are at = +25°C, unless otherwise noted.) (Note 1)
MAX9600/MAX9601/MAX9602
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
AC ELECTRICAL CHARACTERISTICS(VCC= 5V, VEE= -5.2V, VCM= 0V, HYS_ = open (MAX9600/MAX9601), LE_ = low, LE_= high (MAX9600/MAX9601), CL= 5pF,
GND = 0V, RL= 50Ωto -2V (MAX9600), VCCO_ = 5V, RL= 50Ωto 3V (MAX9601/MAX9602), TA= TMINto TMAX. Typical values are at = +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSTracking Frequency Toggle RatefMAXVOUT = 550mVP-P, input overdrive = 100mV4Gbps
Minimum Pulse WidthtPWVOUT = 550mVP-P, input overdrive = 100mV250ps
Propagation DelaytPD-, tPD+Input overdrive = 100mV, Figure 1, (Note 3)500700ps
Propagation Delay TempcoTCtPD0.5ps/°C
Propagation Delay SkewtPDSKEWInput overdrive = 100mV (Note 4)10ps
Propagation Delay MatchInput overdrive = 100mV (Note 5)40ps
10mV to 100mV15Propagation Delay Dispersion
Overdrive100mV to 2V40ps
Propagation Delay Dispersion
Common-Mode Voltage(VEE + 3V) ≤ VCM ≤ (VCC - 2V)10
Propagation Delay Dispersion
Input Slew Rate0.2V/ns to 10V/ns40
Propagation Delay Dispersion
Duty Cycle10% to 90% at 250MHz30
Propagation Delay Dispersion
Pulse Width
VIN = 1VP-P
input
overdrive =
100mV
350ps to 1ns20
Unit-to-Unit Propagation Delay
MatchInput overdrive = 100mV50ps
Output JitterVIN = 2VP-P; 50MHz300fs
Input CapacitanceCININ_+ or IN_, with respect to GND2pF
Latch Setup TimetLSFigure 1, (Notes 3, 6)25080ps
Latch Hold TimetLHFigure 1, (Notes 3, 6)30085ps
Minimum Pulse WidthtLPWFigure 1250ps
Latch to Output DelaytLPDFigure 1200ps
Rise Time and Fall TimetR, tF20% to 80%, Figure 1200ps
Note 1:All devices are 100% production tested at TA= +25°C. Specifications over temperature are guaranteed by design.
Note 2:Does not include output state current in Q_, Q_.
Note 3:Guaranteed by design.
Note 4:Propagation delay skew (tPDSKEW) is for a single channel and is the difference between the propagation delay to the high-
to-low output transition vs. the low-to-high output transition.
Note 5:Propagation delay match is the difference of tPD-or tPD+of one channel to the tPD-or tPD+of another channel of the same device.
Note 6:Latch setup and hold-timing specifications are for a differentially driven latch signal.
MAX9600/MAX9601/MAX9602
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed ComparatorsMAX9600/1/2 toc01
INPUT OVERDRIVE (mV)
PROPAGATION DELAY (ps)80706050403020
PROPAGATION DELAY vs. INPUT OVERDRIVE
(VCC = 10mV TO 100mV)
MAX9600/1/2 toc02
INPUT OVERDRIVE (V)
PROPAGATION DELAY (ps)
PROPAGATION DELAY vs. INPUT OVERDRIVE
(VOD = 0.1V TO 2V)
MAX9600/1/2 toc03
SOURCE IMPEDANCE (Ω)
PROPAGATION DELAY (ps)
PROPAGATION DELAY
vs. SOURCE IMPEDANCE
PROPAGATION DELAY
vs. CAPACITIVE LOAD
MAX9600/1/2 toc04
CAPACITIVE LOAD (pF)
PROPAGATION DELAY (ps)2015105
MAX9600/1/2 toc05
TEMPERATURE (°C)
PROPAGATION DELAY (ps)50-25025
PROPAGATION DELAY
vs. TEMPERATURE
MAX9600/1/2 toc05
COMMON-MODE VOLTAGE (V)
PROPAGATION DELAY (ps)10-1-2
PROPAGATION DELAY
vs. COMMON-MODE VOLTAGE
Typical Operating Characteristics
(VCC= 5V, VEE= -5.2V, VCM= 0V, HYS _ = open (MAX9600/MAX9601), LE_ = low, LE_= high (MAX9600/MAX9601), CL= 5pF, GND = 0V,= 50Ωto -2V (MAX9600), VCCO_ = 5V, RL= 50Ωto 3V (MAX9601/MAX9602), input slew rate = 2V/ns, duty cycle = 50%, = TMINto TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
MAX9600/MAX9601/MAX9602
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
PROPAGATION DELAY
vs. PULSE WIDTHMAX9600/1/2 toc07
PULSE WIDTH (ps)
PROPAGATION DELAY (ps)
MAX9600/1/2 toc08
INPUT SLEW RATE (V/ns)
PROPAGATION DELAY (ps)87654321
PROPAGATION DELAY
vs. INPUT SLEW RATE
PROPAGATION DELAY
vs. DUTY CYCLE
MAX9600/1/2 toc09
DUTY CYCLE (%)
PROPAGATION DELAY (ps)8060702030405010
FREQUENCY = 250MHz
MAX9600/1/2 toc10
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (50250-25
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9600/1/2 toc11
RHYS (kΩ)
HYSTERESIS (mV)3025201540
HYSTERESIS
vs. RHYS TO GNDMAX9600/1/2 toc12
TEMPERATURE (°C)
HYSTERESIS (mV)50250-25
HYSTERESIS
vs. TEMPERATURE
RHYS = 16.4kΩ
Typical Operating Characteristics (continued)(VCC= 5V, VEE= -5.2V, VCM= 0V, HYS _ = open (MAX9600/MAX9601), LE_ = low, LE_= high (MAX9600/MAX9601), CL= 5pF, GND = 0V,= 50Ωto -2V (MAX9600), VCCO_ = 5V, RL= 50Ωto 3V (MAX9601/MAX9602), input slew rate = 2V/ns, duty cycle = 50%, = TMINto TMAX. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
