19-2409; Rev 1; 9/02
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
General Description
The 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 (V
EE
+ 3V) to (V
CC
- 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.
o
500ps Propagation Delay
o
30ps Propagation Delay Dispersion
o
4Gbps Tracking Frequency
o
o
o
o
-2.2V to +3V Input Range with +5V/-5.2V Supplies
-1.2V to +4V Input Range with +6V/-4.2V Supplies
Differential ECL Outputs (MAX9600)
Differential PECL Outputs (MAX9601/MAX9602)
Features
MAX9600/MAX9601/MAX9602
o
Latch Enable (MAX9600/MAX9601)
o
Adjustable Hysteresis (MAX9600/MAX9601)
Ordering Information
PART
MAX9600EUP
MAX9601EUP
MAX9602EUG
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 TSSOP
20 TSSOP
24 TSSOP
Selector Guide
PART
MAX9600EUP
PIN-PACKAGE
20 TSSOP
SELECTION
Dual ECL Output
Comparator with Latch
Enable and Hysteresis
Dual PECL Output
Comparator with Latch
Enable and Hysteresis
Quad PECL Output
Comparator
Applications
VLSI and High-Speed Memory ATE
High-Speed Instrumentation
Scope/Logic Analyzer Front Ends
High-Speed Triggering
Threshold and Peak Detection
Line Receiving/Signal Restoration
MAX9602EUG
24 TSSOP
MAX9601EUP
20 TSSOP
Pin Configurations appear at end of data sheet.
Functional Diagrams
V
CC
V
EE
GND
V
CC
V
EE
V
CCO_
V
CC
V
EE
V
CCO_
IN_+
1/2 MAX9600
Q_
ECL OUTPUT
Q_
R
L
R
L
IN_+
1/2 MAX9601
Q_
PECL OUTPUT
Q_
R
L
R
L
IN_+
1/4 MAX9602
Q_
PECL OUTPUT
Q_
R
L
R
L
IN_-
HYS_
R
HYS_
LE_ LE_
IN_-
HYS_
R
HYS_
LE_ LE_
IN_-
V
T
= -2V
V
T
= V
CCO_
- 2V
V
T
= V
CCO_
- 2V
THE OPEN-EMITTER OUTPUTS REQUIRE EXTERNAL PULLDOWN RESISTORS (R
L
). USE RESISTORS IN THE RANGE OF 50Ω TO 75Ω CONNECTED TO V
T
.
CURRENT-CONTROLLED HYSTERESIS REQUIRES A SINGLE EXTERNAL RESISTOR (R
HYS_
) FROM HYS_ TO GND IN THE RANGE OF 10kΩ TO 35kΩ.
________________________________________________________________
Maxim Integrated Products
1
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.
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
MAX9600/MAX9601/MAX9602
ABSOLUTE MAXIMUM RATINGS
V
S
= V
CC
- V
EE
...................................................................12.0V
V
CC
to GND (MAX9600) .......................................................6.8V
V
EE
to GND (MAX9600) ......................................................-6.5V
Differential Input Voltage ...................................................±6.5V
Latch Differential Voltage ......................................................±4V
Common-Mode Input Voltage (V
CM
) .........................V
EE
to V
CC
V
CCO
_ to V
EE
(MAX9601/MAX9602)....................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
LE_,
LE_
to GND
MAX9600 ....................................................(V
EE
- 0.3V) to 0.3V
MAX9601 ..................................(V
EE
- 0.3V) to (V
CCO
_ + 0.3V)
Input Current to Any Input Pin.............................................10mA
HYS_ Current (MAX9600/MAX9601) ...................................-1mA
Continuous Output Current .................................................50mA
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TSSOP (derate 10.9mW/
o
C 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
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.
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, V
EE
= -5.2V, V
CM
= 0V, HYS_ = open (MAX9600/MAX9601), LE_ = low,
LE_
= high (MAX9600/MAX9601), GND = 0V,
R
L
= 50Ω to -2V (MAX9600), V
CCO
_ = 5V, R
L
= 50Ω to 3V (MAX9601/MAX9602), T
A
= T
MIN
to T
MAX
. Typical values are at
T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
INPUT (IN_+, IN_-)
Input Differential Voltage Range
Input Common-Mode Voltage
Input Offset Voltage
Input Offset-Voltage Tempco
Input Offset-Voltage Channel
Matching
Input Bias Current
Input Bias-Current Tempco
Input Offset Current
Input Resistance
LATCH INPUT (LE_,
LE
_
)
Latch Differential Input Voltage
V
LD
Guaranteed by latch
input current
MAX9600
Latch Input Voltage Range
V
LR
MAX9601
MAX9600
MAX9601
R
HYS
=
∞
R
HYS
= 16.4kΩ
V
CCO
_
≥
3.5V
V
CCO
_
<
3.5V
Latch Input Current
HYSTERESIS INPUT (HYS_)
Input-Referred Hysteresis
MAX9600/MAX9601
0
30
mV
I
LE
, I
LE
MAX9600
MAX9601
0.4
0.25
-2
V
CCO
_
- 3.5
0
5
5
2.0
3.50
0
V
CCO
_
V
CCO
_
20
20
µA
V
V
I
B
TCI
B
I
OS
R
IN
Differential mode (V
ID
≤
10mV)
Common mode (V
EE
+ 3V)
≤
V
CM
≤
(V
CC
- 2V)
V
ID
=
±5.2V
V
ID
V
CM
V
OS
TCV
OS
Guaranteed by input bias current tests
Guaranteed by input bias current tests
T
A
= +25°C
T
MIN
≤
T
A
≤
T
MAX
8
1
6
10
0.3
10
100
±5
20
-5.2
V
EE
+ 3
±1
+5.2
V
CC
- 2
±5
±9
V
V
mV
µV/°C
mV
µA
nA/°C
µA
kΩ
MΩ
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V, V
EE
= -5.2V, V
CM
= 0V, HYS_ = open (MAX9600/MAX9601), LE_ = low,
LE_
= high (MAX9600/MAX9601), GND = 0V,
R
L
= 50Ω to -2V (MAX9600), V
CCO
_ = 5V, R
L
= 50Ω to 3V (MAX9601/MAX9602), T
A
= T
MIN
to T
MAX
. Typical values are at
T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
OUTPUT (Q_,
Q
_
)
MAX9600
T
A
= +25°C
MAX9601/MAX9602
MAX9600
Logic Output High Voltage
V
OH
T
A
= T
MIN
MAX9601/MAX9602
MAX9600
T
A
= T
MAX
MAX9601/MAX9602
MAX9600
T
A
= +25°C
MAX9601/MAX9602
MAX9600
Logic Output Low Voltage
V
OL
T
A
= T
MIN
MAX9601/MAX9602
MAX9600
T
A
= T
MAX
SUPPLY
Positive Supply Voltage
Negative Supply Voltage
Supply Voltage Difference
Logic Supply Voltage
Positive Supply Current
V
CC
V
EE
V
S
V
CCO
_
I
CC
Guaranteed by output swing tests
Guaranteed by output swing tests
V
S
= (V
CC
- V
EE
), guaranteed by
output swing tests
MAX9601/MAX9602
MAX9600
(Note 2)
MAX9601
MAX9602
MAX9600
Negative Supply Current
I
EE
(Note 2)
MAX9601
MAX9602
MAX9600
Power-Supply Dissipation
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
P
DISS
CMRR
PSRR
(Note 2)
MAX9601
MAX9602
(V
EE
+ 3V)
≤
V
CM
≤
(V
CC
- 2V)
4.3V
≤
V
CC
≤
6.3V, -6V
≤
V
EE
≤
-4V,
9.5V
≤
V
S
≤
11.5V
4.3
-6
9.5
2.4
16
19
28
21
24
38
190
220
338
70
65
5
-5.2
6.3
-4
11.5
V
CC
24
27
39
28
33
49
266
307
450
dB
dB
mW
mA
mA
V
V
V
V
MAX9601/MAX9602
-1.10
V
CCO
_
- 1.10
-1.2
V
CCO
_
- 1.2
-1.05
V
CCO
_
- 1.05
-1.95
V
CCO
_
- 1.95
-2.0
V
CCO
_
- 2.0
-1.9
V
CCO
_
- 1.9
-0.94
V
CCO
_
- 0.94
-1.02
V
CCO
_
- 1.02
-0.87
V
CCO
_
- 0.87
-1.72
V
CCO
_
- 1.72
-1.78
V
CCO
_
- 1.78
-1.66
V
CCO
_
- 1.66
-0.75
V
CCO
_
- 0.75
-0.8
V
CCO
_
- 0.8
-0.70
V
CCO
_
- 0.70
-1.55
V
CCO
_
- 1.55
-1.6
V
CCO
_
- 1.6
-1.50
V
CCO
_
- 1.5
V
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX9600/MAX9601/MAX9602
_______________________________________________________________________________________
3
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
MAX9600/MAX9601/MAX9602
AC ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, V
EE
= -5.2V, V
CM
= 0V, HYS_ = open (MAX9600/MAX9601), LE_ = low,
LE_
= high (MAX9600/MAX9601), C
L
= 5pF,
GND = 0V, R
L
= 50Ω to -2V (MAX9600), V
CCO
_ = 5V, R
L
= 50Ω to 3V (MAX9601/MAX9602), T
A
= T
MIN
to T
MAX
. Typical values are at
T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Tracking Frequency Toggle Rate
Minimum Pulse Width
Propagation Delay
Propagation Delay Tempco
Propagation Delay Skew
Propagation Delay Match
Propagation Delay Dispersion
Overdrive
Propagation Delay Dispersion
Common-Mode Voltage
Propagation Delay Dispersion
Input Slew Rate
Propagation Delay Dispersion
Duty Cycle
Propagation Delay Dispersion
Pulse Width
Unit-to-Unit Propagation Delay
Match
Output Jitter
Input Capacitance
Latch Setup Time
Latch Hold Time
Minimum Pulse Width
Latch to Output Delay
Rise Time and Fall Time
C
IN
t
LS
t
LH
t
LPW
t
LPD
t
R,
t
F
V
IN
= 1V
P-P
input
overdrive =
100mV
SYMBOL
f
MAX
t
PW
TCt
PD
t
PDSKEW
Input overdrive = 100mV (Note 4)
Input overdrive = 100mV (Note 5)
10mV to 100mV
100mV to 2V
(V
EE
+ 3V)
≤
V
CM
≤
(V
CC
- 2V)
0.2V/ns to 10V/ns
10% to 90% at 250MHz
350ps to 1ns
Input overdrive = 100mV
V
IN
= 2V
P-P
; 50MHz
IN_+ or IN_, with respect to GND
Figure 1, (Notes 3, 6)
Figure 1, (Notes 3, 6)
Figure 1
Figure 1
20% to 80%, Figure 1
250
300
CONDITIONS
V
OUT
= 550mV
P-P
, input overdrive = 100mV
V
OUT
= 550mV
P-P
, input overdrive = 100mV
MIN
TYP
4
250
500
0.5
10
40
15
40
10
40
ps
30
20
50
300
2
80
85
250
200
200
ps
fs
pF
ps
ps
ps
ps
ps
700
MAX
UNITS
Gbps
ps
ps
ps/°C
ps
ps
ps
t
PD-,
t
PD+
Input overdrive = 100mV, Figure 1, (Note 3)
All devices are 100% production tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Does not include output state current in Q_,
Q_.
Guaranteed by design.
Propagation delay skew (t
PDSKEW
) 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 t
PD-
or t
PD+
of one channel to the t
PD-
or t
PD+
of another channel of the same device.
Note 6:
Latch setup and hold-timing specifications are for a differentially driven latch signal.
Note 1:
Note 2:
Note 3:
Note 4:
4
_______________________________________________________________________________________
Dual ECL and Dual/Quad PECL, 500ps,
Ultra-High-Speed Comparators
Typical Operating Characteristics
(V
CC
= 5V, V
EE
= -5.2V, V
CM
= 0V, HYS _ = open (MAX9600/MAX9601), LE_ = low,
LE_
= high (MAX9600/MAX9601), C
L
= 5pF, GND = 0V,
R
L
= 50Ω to -2V (MAX9600), V
CCO
_ = 5V, R
L
= 50Ω to 3V (MAX9601/MAX9602), input slew rate = 2V/ns, duty cycle = 50%,
T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C, unless otherwise noted.) (Note 1)
MAX9600/MAX9601/MAX9602
PROPAGATION DELAY vs. INPUT OVERDRIVE
(V
CC
= 10mV TO 100mV)
MAX9600/1/2 toc01
PROPAGATION DELAY vs. INPUT OVERDRIVE
(V
OD
= 0.1V TO 2V)
540
PROPAGATION DELAY (ps)
520
500
480
460
440
420
400
MAX9600/1/2 toc02
PROPAGATION DELAY
vs. SOURCE IMPEDANCE
MAX9600/1/2 toc03
530
520
PROPAGATION DELAY (ps)
510
500
490
480
470
10
20
30
40
50
60
70
80
560
3500
3000
PROPAGATION DELAY (ps)
2500
2000
1500
1000
500
0
90 100
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
INPUT OVERDRIVE (V)
0
100
200
300
400
500
600
INPUT OVERDRIVE (mV)
SOURCE IMPEDANCE (Ω)
PROPAGATION DELAY
vs. CAPACITIVE LOAD
MAX9600/1/2 toc04
PROPAGATION DELAY
vs. TEMPERATURE
MAX9600/1/2 toc05
PROPAGATION DELAY
vs. COMMON-MODE VOLTAGE
MAX9600/1/2 toc05
1500
1250
PROPAGATION DELAY (ps)
1000
750
500
250
0
0
5
10
15
20
25
550
540
PROPAGATION DELAY (ps)
530
520
510
500
490
480
470
530
520
PROPAGATION DELAY (ps)
510
500
490
480
470
30
-50
-25
0
25
50
75
100
-3
-2
-1
0
1
2
3
CAPACITIVE LOAD (pF)
TEMPERATURE (°C)
COMMON-MODE VOLTAGE (V)
_______________________________________________________________________________________
5
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