View MAX9371_275721.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-2377; Rev 0; 4/02
LVTTL/TTL-to-Differential LVPECL/PECL Translators
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 -40C to +85C, and are offered in space-saving, 8-pin SOT23, MAX, and SO packages.
Features
o Guaranteed 1GHz Operating Frequency at 600mV Differential Output o 270ps Propagation Delay o 10ps Output-to-Output Skew (MAX9370/MAX9372) o Wide Supply Range: 3.0V to 5.25V (MAX9370/MAX9371) o ESD Protection > 2kV (Human Body Model) o Output High with Input Open o Available in Small 8-Pin SOT23, MAX, and SO Packages o Improved Upgrades to MC100EL22, MC100EPT20, MC100EPT22
MAX9370/MAX9371/MAX9372
Ordering Information
PART TEMP RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 8 SOT23-8 8 MAX 8 SO 8 SOT23-8 8 MAX 8 SO 8 SOT23-8 8 MAX MAX9370EKA-T* MAX9370EUA* MAX9370ESA MAX9371EKA-T* MAX9371EUA* MAX9371ESA MAX9372EKA-T* MAX9372EUA*
Applications
Precision Clock/Data Level Translation Central Office Clock Distribution DSLAM/DLC Base Station Mass Storage
Pin Configurations/Functional Diagrams appears at end of data sheet.
MAX9372ESA -40C to +85C 8 SO *Future product--contact factory for availability.
Typical Operating Circuit
MAX9370 MAX9371 MAX9372
Q_ TTL/LVTTL INPUT D
PECL/LVPECL RECEIVER Z0 = 50
Q_ Z0 = 50 50 50
VCC - 2.0V
________________________________________________________________ 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.
LVTTL/TTL-to-Differential LVPECL/PECL Translators MAX9370/MAX9371/MAX9372
ABSOLUTE MAXIMUM RATINGS
VCC to GND (MAX9370/MAX9371) .......................-0.3V to +5.5V VCC to GND (MAX9372) ........................................-0.3V to +4.0V D_ to GND ..................................................-0.3V to (VCC + 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..............................................................+112C/W 8-Pin MAX...............................................................+221C/W 8-Pin SO....................................................................+170C/W Junction-to-Ambient Thermal Resistance with 500LFPM Airflow 8-Pin SOT23................................................................+78C/W 8-Pin MAX...............................................................+155C/W 8-Pin SO......................................................................+99C/W Junction-to-Case Thermal Resistance 8-Pin SOT23................................................................+80C/W 8-Pin MAX.................................................................+39C/W 8-Pin SO......................................................................+40C/W Continuous Power Dissipation (TA = +70C) 8-Pin SO (derate 5.9mW/C above +70C)...................470mW 8-Pin MAX (derate 4.5mW/C above +70C) ..............362mW 8-Pin SOT23 (derate 8.9mW/C above +70C).............714mW Operating Temperature Range ...........................-40C to +85C Junction Temperature .....................................................+150C Storage Temperature Range .............................-60C to +150C Soldering Temperature (10s) ...........................................+300C
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
(VCC = 3.0V to 5.25V for MAX9370/MAX9371, VCC = 3.0V to 3.6V for MAX9372, outputs terminated with 50 1% to VCC - 2.0V. Typical values are at VCC = 3.3V, VIH = 2.4V, VIL = 0.4V, unless otherwise noted.) (Notes 1, 2, 3)
PARAMETER SYMBOL CONDITIONS -40C MIN TYP MAX MIN +25C TYP MAX MIN +85C TYP MAX UNITS
LVTTL INPUTS (D_) Input High Voltage Input Low Voltage Input Low Current VIH VIL IIL VD = 0.5V VD = 2.7V Input High Current VD = VCC, MAX9370/ MAX9371 VD = VCC, MAX9372 Input Clamp Voltage IIL or IIH = 18mA -1.2 -50 2.0 0.8 -100 +10 130 -50 2.0 0.8 -100 +10 130 -50 2.0 0.8 -100 +10 130 V V A
IIH
A
20 -1.2
20 -1.2
20 V
LVPECL/PECL OUTPUTS (Q_, Q_) Output High Voltage MAX9370 VOH MAX9371/ MAX9372 MAX9370 VOL MAX9371/ MAX9372 VCC 1.085 VCC 1.145 VCC 1.83 VCC 1.945 VCC 0.895 VCC 0.895 VCC 1.62 VCC 1.695 VCC 1.025 VCC 1.145 VCC 1.81 VCC 1.945 VCC 0.895 VCC 0.895 VCC 1.62 VCC -1.695 VCC 1.025 VCC 1.145 VCC 1.81 VCC 1.945 VCC 0.895 VCC 0.895 VCC 1.62 VCC 1.695
V
Output Low Voltage
V
2
_______________________________________________________________________________________
LVTTL/TTL-to-Differential LVPECL/PECL Translators
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.0V to 5.25V for MAX9370/MAX9371, VCC = 3.0V to 3.6V for MAX9372, outputs terminated with 50 1% to VCC - 2.0V. Typical values are at VCC = 3.3V, VIH = 2.4V, VIL = 0.4V, unless otherwise noted.) (Notes 1, 2, 3)
PARAMETER Differential Output Swing (VOH - VOL) SUPPLY CURRENT Power-Supply Current (Note 4) ICC MAX9370/ MAX9372 MAX9371 18 9.5 28 16 20 10.5 28 16 22 11.5 28 16 mA SYMBOL CONDITIONS -40C MIN 600 TYP MAX MIN 600 +25C TYP MAX MIN 600 +85C TYP MAX UNITS
MAX9370/MAX9371/MAX9372
mV
AC ELECTRICAL CHARACTERISTICS
(VCC = 3.0V to 5.25V for MAX9370/MAX9371, VCC = 3.0V to 3.6V for MAX9372, outputs terminated with 50 1% to VCC - 2.0V, input frequency 1.0GHz, input transition time = 125ps (20% to 80%), VIH = 2.0V, VIL = 0.8V. Typical values are at VCC = 3.3V, VIH = 2.4V, VIL = 0.4V, unless otherwise noted.) (Note 5)
PARAMETER Maximum Toggle Frequency Input-toOutput Propagation Delay Output-toOutput Skew Output Rise/ Fall Time Added Deterministic Jitter Added Random Jitter SYMBOL CONDITIONS VOH - VOL 600mV -40C MIN 1.0 TYP 1.5 MAX MIN 1.0 +25C TYP 1.5 MAX MIN 1.0 +85C TYP 1.5 MAX UNITS
fMAX
GHz
tPLH, tPHL
Figure 1 MAX9370/ MAX9372 (Note 6) Figure 1 1Gbps 223 - 1 PRBS pattern (Note 7) 1GHz clock (Note 7)
200
270
400
200
270
400
200
270
400
ps
tSKQQ tR, tF
10
50
7
50
7
50
ps
80
250
80
250
80
250
ps
tDJ
40
60
40
60
40
60
ps(P-P)
tRJ
0.23
0.8
0.23
0.8
0.23
0.8
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 TA = +25C. DC limits are guaranteed by design and characterization over the full operating temperature range. Note 4: All pins are open except VCC 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.
_______________________________________________________________________________________
3
LVTTL/TTL-to-Differential LVPECL/PECL Translators MAX9370/MAX9371/MAX9372
Typical Operating Characteristics
(MAX9371, VCC = 3.3V, VIH = 2.4V, VIL = 0.4V, outputs terminated with 50 to VCC - 2V, input transition time = 125ps (20% to 80%), TA = +25C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX9370 toc01
DIFFERENTIAL OUTPUT VOLTAGE (VOH - VOL) vs. FREQUENCY
MAX9370 toc02
TRANSITION TIME vs. TEMPERATURE
f = 100MHz
MAX9370 toc03
26 ALL INPUTS AND OUTPUTS ARE OPEN 22 SUPPLY CURRENT (mA) MAX9370/MAX9372 18
1000 DIFFERENTIAL OUTPUT VOLTAGE (mV)
260
800
TRANSITION TIME (ps)
240 FALLING EDGE RISING EDGE
600
220
14 MAX9371 10
400
200
200
6 -40 -15 10 35 60 85 TEMPERATURE (C)
0 0 0.4 0.8 1.2 1.6 2.0 FREQUENCY (GHz)
180 -40 -15 10 35 60 85 TEMPERATURE (C)
PROPAGATION DELAY vs. TEMPERATURE
MAX9370 toc04
300 290 PROPAGATION DELAY (ps) 280 270 260 250 240 -40 -15 10 35 60
85
TEMPERATURE (C)
4
_______________________________________________________________________________________
LVTTL/TTL-to-Differential LVPECL/PECL Translators
Pin Description for the MAX9370/MAX9372
PIN SO MAX 1 2 3 4 5 6 7 8 SOT23 8 7 6 5 2 4 3 1 NAME Q0 Q0 Q1 Q1 GND D1 D0 VCC FUNCTION Noninverting Differential LVPECL/PECL Output 0. Typically terminate with 50 resistor to VCC - 2V. Inverting Differential LVPECL/PECL Output 0. Typically terminate with 50 resistor to VCC - 2V. Noninverting Differential LVPECL/PECL Output 1. Typically terminate with 50 resistor to VCC - 2V. Inverting Differential LVPECL/PECL Output 1. Typically terminate with 50 resistor to VCC - 2V. Ground. Provide a low-impedance connection to ground plane. LVTTL/TTL Input 1. LVTTL/TTL input for translator corresponding to output Q1 and Q1. LVTTL/TTL Input 0. LVTTL/TTL input for translator corresponding to output Q0 and Q0. Positive Supply Voltage. Bypass VCC to GND with 0.1F and 0.01F ceramic capacitors. Place the capacitors as close to the device as possible with the smaller value capacitor closest to the device.
MAX9370/MAX9371/MAX9372
Pin Description for the MAX9371
PIN SO MAX 1, 4, 6 2 3 5 7 8 NAME SOT23 4, 5, 8 7 6 2 3 1 N.C. Q Q GND D VCC No Connection. No internal connection. Noninverting Differential LVPECL/PECL Output. Typically terminate with 50 resistor to VCC - 2V. Inverting Differential LVPECL/PECL Output. Typically terminate with 50 resistor to VCC - 2V. Ground. Provide a low-impedance connection to ground plane. LVTTL/TTL Input Positive Supply Voltage. Bypass VCC to GND with 0.1F and 0.01F ceramic capacitors. Place the capacitors as close to the device as possible with the smaller value capacitor closest to the device. FUNCTION
Detailed 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 LVTTLto-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 optimized for 3.0V to 3.6V operation. These devices feature low 270ps propagation delay and 40ps peak-to-peak deterministic jitter.
Inputs and Outputs
The MAX9370/MAX9371/MAX9372 inputs accept standard LVTTL/TTL levels. The input has pullup circuitry that drives the outputs to a differential high if the inputs are open. The outputs are differential LVPECL/PECL levels.
Applications Information
Output Termination
Terminate outputs with 50 to VCC - 2V or use an equivalent Thevenin termination. Use the same terminate on each output for the lowest output-to-output skew. When a single-ended signal is taken from a differential output, terminate both outputs. For example, if Q is used as a single-ended output, terminate both Q and Q.
_______________________________________________________________________________________
5
LVTTL/TTL-to-Differential LVPECL/PECL Translators MAX9370/MAX9371/MAX9372
Ensure that the output currents do not exceed the continuous safe output current limit or surge output current limit as specified in the Absolute Maximum Ratings table. Under all operating conditions, the device's total thermal limits should be observed.
PC Board Traces
Input and output trace characteristics affect the performance of the MAX9370/MAX9371/MAX9372. Connect each differential output to a 50 characteristic impedance trace. Minimize the number of vias to prevent impedance discontinuities. Reduce reflections by maintaining the 50 characteristic impedance through connectors and across cables. Reduce skew within a differential pair by matching the electrical length of the traces.
Supply Bypassing
Bypass VCC to GND with high-frequency surface-mount ceramic 0.1F and 0.01F capacitors in parallel and as close to the device as possible, with the 0.01F capacitor closest to the device. Use multiple parallel vias to minimize parasitic inductance.
Chip Information
TRANSISTOR COUNT: 358 PROCESS: Bipolar
VIH
50%
50%
D_ tPLH Q_ VOH - VOL Q_ tPHL
VIL
VOH
VOL
80%
VOH - VOL
80% 0V (DIFFERENTIAL)
20% Q_ - Q_ tR
VOH - VOL
20%
tF
Figure 1. Input-to-Output Propagation Delay and Transition Timing Diagram
6
_______________________________________________________________________________________
LVTTL/TTL-to-Differential LVPECL/PECL Translators
Pin Configurations/Functional Diagrams
MAX9370/MAX9371/MAX9372
N.C.
1
MAX9371
8
VCC
VCC
1
MAX9371
8
N.C.
Q
2
7
D
GND
2
7
Q
Q
3
6
N.C.
D
3
6
Q
N.C.
4
5
GND
N.C.
4
5
N.C.
SO/MAX
SOT23
MAX9370/MAX9372
Q0 1 8 VCC VCC 1
MAX9370/MAX9372
8 Q0
Q0
2
7
D0
GND
2
7
Q0
Q1
3
6
D1
D0
3
6
Q1
Q1
4
5
GND
D1
4
5
Q1
SO/MAX
SOT23
_______________________________________________________________________________________
7
LVTTL/TTL-to-Differential LVPECL/PECL Translators MAX9370/MAX9371/MAX9372
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
SOT23, 8L.EPS
8
4X S
8
INCHES DIM A A1 A2 b c D e E H MIN 0.002 0.030 MAX 0.043 0.006 0.037
MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95
y 0.500.1 0.60.1
E
H
1
0.60.1
1
D
L
S
BOTTOM VIEW
0.010 0.014 0.005 0.007 0.116 0.120 0.0256 BSC 0.116 0.120 0.188 0.198 0.016 0.026 6 0 0.0207 BSC
0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 4.78 5.03 0.41 0.66 0 6 0.5250 BSC
TOP VIEW
A2
A1
A
e
c b L
SIDE VIEW
FRONT VIEW
PROPRIETARY INFORMATION TITLE:
PACKAGE OUTLINE, 8L uMAX/uSOP
APPROVAL DOCUMENT CONTROL NO. REV.
21-0036
J
1 1
8
_______________________________________________________________________________________
8LUMAXD.EPS
LVTTL/TTL-to-Differential LVPECL/PECL Translators
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
9LUCSP, 3x3.EPS
MAX9370/MAX9371/MAX9372
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

▲Up To Search▲

Price & Availability of MAX9371

	To Download MAX9371 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .