MAXIM MAX9370, MAX9371, MAX9372 User Manual
General Description
The MAX9370/MAX9371/MAX9372 LVTTL/TTL-to-differential LVPECL/PECL translators are designed for highspeed communication signal and clock driver
applications. The MAX9370/MAX9372 are dual
LVTTL/TTL-to-LVPECL/PECL translators that operate in
excess of 1GHz. The MAX9371 is a single translator.
The MAX9370/MAX9371 operate over a wide 3.0V to
5.25V supply range, allowing high-performance clock
or data distribution in systems with a nominal 3.3V or
5.0V supply. The MAX9372 is designed to operate from
3.0V to 3.6V.
The devices default to output high if the input is disconnected. They feature low 270ps propagation delay. The
MAX9370/MAX9371/MAX9372 employ industry-standard flow-through pinouts. These devices are specified
for operation from -40°C to +85°C, and are offered in
space-saving, 8-pin SOT23, µMAX, and SO packages.
Applications
Precision Clock/Data Level Translation
Central Office Clock Distribution
DSLAM/DLC
Base Station
Mass Storage
Features
♦ Guaranteed 1GHz Operating Frequency at 600mV
Differential Output
♦ 270ps Propagation Delay
♦ 10ps Output-to-Output Skew (MAX9370/MAX9372)
♦ Wide Supply Range: 3.0V to 5.25V
(MAX9370/MAX9371)
♦ ESD Protection > 2kV (Human Body Model)
♦ Output High with Input Open
♦ Available in Small 8-Pin SOT23, µMAX, and SO
Packages
♦ Improved Upgrades to MC100EL22, MC100EPT20,
MC100EPT22
MAX9370/MAX9371/MAX9372
LVTTL/TTL-to-Differential LVPECL/PECL
Translators
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
MAX9370
MAX9371
MAX9372
TTL/LVTTL
INPUT
Q_
D
Q_
Z
0
= 50Ω
Z
0
= 50Ω
50Ω
50Ω
PECL/LVPECL
RECEIVER
VCC - 2.0V
Typical Operating Circuit
19-2377; Rev 0; 4/02
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.
PART TEMP RANGE PIN-PACKAGE
MAX9370EKA-T* -40°C to +85°C 8 SOT23-8
MAX9370EUA* -40°C to +85°C 8 µMAX
MAX9370ESA -40°C to +85°C 8 SO
MAX9371EKA-T* -40°C to +85°C 8 SOT23-8
MAX9371EUA* -40°C to +85°C 8 µMAX
MAX9371ESA -40°C to +85°C 8 SO
MAX9372EKA-T* -40°C to +85°C 8 SOT23-8
MAX9372EUA* -40°C to +85°C 8 µMAX
MAX9372ESA -40°C to +85°C 8 SO
*Future product—contact factory for availability.
Pin Configurations/Functional Diagrams appears at end of
data sheet.
MAX9370/MAX9371/MAX9372
LVTTL/TTL-to-Differential LVPECL/PECL
Translators
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 (MAX9370/MAX9371) .......................-0.3V to +5.5V
V
CC
to GND (MAX9372)........................................-0.3V to +4.0V
D_ to GND ..................................................-0.3V to (V
CC
+ 0.3V)
Q_,
Q_ to GND ...........................................-0.3V to (VCC+ 0.3V)
Continuous Output Current ................................................50mA
Surge Output Current........................................................100mA
Junction-to-Ambient Thermal Resistance in Still Air
8-Pin SOT23..............................................................+112°C/W
8-Pin µMAX…............................................................+221°C/W
8-Pin SO....................................................................+170°C/W
Junction-to-Ambient Thermal Resistance with
500LFPM Airflow
8-Pin SOT23................................................................+78°C/W
8-Pin µMAX…............................................................+155°C/W
8-Pin SO......................................................................+99°C/W
Junction-to-Case Thermal Resistance
8-Pin SOT23................................................................+80°C/W
8-Pin µMAX…..............................................................+39°C/W
8-Pin SO......................................................................+40°C/W
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C)...................470mW
8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW
8-Pin SOT23 (derate 8.9mW/°C above +70°C).............714mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Soldering Temperature (10s) ...........................................+300°C
DC ELECTRICAL CHARACTERISTICS
(VCC= 3.0V to 5.25V for MAX9370/MAX9371, VCC= 3.0V to 3.6V for MAX9372, outputs terminated with 50Ω ±1% to VCC- 2.0V.
Typical values are at V
CC
= 3.3V, V
IH
= 2.4V, VIL= 0.4V, unless otherwise noted.) (Notes 1, 2, 3)
-40°C +25°C +85°C
PARAMETER
SYMBOL
CONDITIONS
UNITS
LVTTL INPUTS (D_)
Input High
Voltage
V
IH
V
Input Low
Voltage
V
IL
V
Input Low
Current
I
IL
VD = 0.5V
µA
VD = 2.7V
VD = VCC,
MAX9370/
MAX9371
Input High
Current
I
IH
VD = VCC,
MAX9372
20 20 20
µA
Input Clamp
Voltage
V
LVPECL/PECL OUTPUTS (Q_, Q_)
MAX9370
Output High
Voltage
V
OH
MAX9371/
MAX9372
V
MAX9370
Output Low
Voltage
V
OL
MAX9371/
MAX9372
V
MIN TYP MAX MIN TYP MAX MIN TYP MAX
2.0 2.0 2.0
IIL or IIH = 18mA -1.2 -1.2 -1.2
-50 +10 -50 +10 -50 +10
V
-
CC
1.085
V
-
CC
1.145
V
-
CC
1.83
V
-
CC
1.945
0.8 0.8 0.8
-100 -100 -100
130 130 130
V
-
V
CC
0.895
V
CC
0.895
V
CC
1.62
V
CC
1.695
-
CC
1.025
-
V
-
CC
1.145
-
V
-
CC
1.81
-
V
-
CC
1.945
V
CC
0.895
V
CC
0.895
V
CC
1.62
V
CC
-1.695
-
V
-
CC
1.025
-
V
-
CC
1.145
-
V
-
CC
1.81
-
V
-
CC
1.945
V
CC
0.895
V
CC
0.895
V
CC
1.62
V
CC
1.695
-
-
-
-
MAX9370/MAX9371/MAX9372
LVTTL/TTL-to-Differential LVPECL/PECL
Translators
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC= 3.0V to 5.25V for MAX9370/MAX9371, VCC= 3.0V to 3.6V for MAX9372, outputs terminated with 50Ω ±1% to VCC- 2.0V.
Typical values are at V
CC
= 3.3V, V
IH
= 2.4V, VIL= 0.4V, unless otherwise noted.) (Notes 1, 2, 3)
-40°C
+25°C
+85°C
PA R A M ET ER
SYMBOL
CONDITIONS
UNITS
Differential
Output Swing
(V
OH
- VOL)
mV
SUPPLY CURRENT
MAX9370/
MAX9372
18 28
28 22 28
Power-Supply
Current
(Note 4)
I
CC
MAX9371
16
16
16
mA
AC ELECTRICAL CHARACTERISTICS
(VCC= 3.0V to 5.25V for MAX9370/MAX9371, VCC= 3.0V to 3.6V for MAX9372, outputs terminated with 50Ω ±1% to VCC- 2.0V, input
frequency ≤ 1.0GHz, input transition time = 125ps (20% to 80%), V
IH
= 2.0V, VIL= 0.8V. Typical values are at VCC= 3.3V, VIH=
2.4V, V
IL
= 0.4V, unless otherwise noted.) (Note 5)
-40°C +25°C +85°C
PARAMETER
SYMBOL
CONDITIONS
UNITS
Maximum
Toggle
Frequency
f
MAX
VOH - VOL ≥
600mV
GHz
Input-toOutput
Propagation
Delay
t
PLH
,
t
PHL
Figure 1
ps
Output-to-
Output Skew
t
SKQQ
MAX9370/
MAX9372
(Note 6)
10 50 7 50 7 50 ps
Output Rise/
Fall Time
t
R
, t
F
Figure 1 80
80
ps
Added
Deterministic
Jitter
t
DJ
1Gbps 223 - 1
PRBS pattern
(Note 7)
40 60
60 40 60
ps
(P-P)
Added
Random Jitter
t
RJ
1GHz clock
(Note 7)
ps
(RMS)
Note 1: Measurements are made with the device in thermal equilibrium.
Note 2: Current into a pin is defined as positive. Current out of a pin is defined as negative.
Note 3: DC parameters are production tested at T
A
= +25°C. DC limits are guaranteed by design and characterization over the full
operating temperature range.
Note 4: All pins are open except V
CC
and GND.
Note 5: Guaranteed by design and characterization. Limits are set to ±6 sigma.
Note 6: Measured between outputs of the same part at the signal crossing points under identical conditions for a same-edge transition.
Note 7: Device jitter added to the input signal.
MIN TYP MAX MIN TYP MAX MIN TYP MAX
600 600 600
20
9.5
10.5
11.5
MIN TYP MAX MIN TYP MAX MIN TYP MAX
1.0 1.5 1.0 1.5 1.0 1.5
200 270 400 200 270 400 200 270 400
250 80 250
0.23 0.8 0.23 0.8 0.23 0.8
40
250
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