19-2377; Rev 0; 4/02 LVTTL/TTL-to-Differential LVPECL/PECL Translators 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. 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 Ordering Information TEMP RANGE PIN-PACKAGE MAX9370EKA-T* PART -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 Base Station MAX9371ESA -40°C to +85°C 8 SO Mass Storage MAX9372EKA-T* -40°C to +85°C 8 SOT23-8 MAX9372EUA* -40°C to +85°C 8 µMAX Applications Precision Clock/Data Level Translation Central Office Clock Distribution DSLAM/DLC Pin Configurations/Functional Diagrams appears at end of data sheet. MAX9372ESA -40°C to +85°C 8 SO *Future product—contact factory for availability. Typical Operating Circuit MAX9370 MAX9371 MAX9372 PECL/LVPECL RECEIVER Z0 = 50Ω Q_ TTL/LVTTL INPUT D Q_ Z0 = 50Ω 50Ω 50Ω VCC - 2.0V ________________________________________________________________ Maxim Integrated Products 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. 1 MAX9370/MAX9371/MAX9372 General Description MAX9370/MAX9371/MAX9372 LVTTL/TTL-to-Differential LVPECL/PECL Translators 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..............................................................+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 (TA = +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 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 50Ω ±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 -40°C MIN TYP +25°C MAX MIN TYP +85°C MAX MIN TYP MAX UNITS LVTTL INPUTS (D_) Input High Voltage VIH Input Low Voltage VIL Input Low Current IIL 2.0 VD = 0.5V VD = 2.7V Input High Current IIH Input Clamp Voltage -50 2.0 2.0 V 0.8 0.8 0.8 V -100 -100 -100 µA +10 -50 +10 -50 +10 VD = VCC, MAX9370/ MAX9371 130 130 130 VD = VCC, MAX9372 20 20 20 IIL or IIH = 18mA -1.2 -1.2 -1.2 µA V LVPECL/PECL OUTPUTS (Q_, Q_) Output High Voltage Output Low Voltage 2 VOH VOL MAX9370 VCC 1.085 VCC 0.895 VCC 1.025 VCC 0.895 VCC 1.025 VCC 0.895 MAX9371/ MAX9372 VCC 1.145 VCC 0.895 VCC 1.145 VCC 0.895 VCC 1.145 VCC 0.895 MAX9370 VCC 1.83 VCC 1.62 VCC 1.81 VCC 1.62 VCC 1.81 VCC 1.62 MAX9371/ MAX9372 VCC 1.945 VCC 1.695 VCC 1.945 VCC -1.695 VCC 1.945 VCC 1.695 _______________________________________________________________________________________ V V LVTTL/TTL-to-Differential LVPECL/PECL Translators (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 VCC = 3.3V, VIH = 2.4V, VIL = 0.4V, unless otherwise noted.) (Notes 1, 2, 3) PARAMETER SYMBOL CONDITIONS Differential Output Swing (VOH - VOL) -40°C MIN TYP +25°C MAX 600 MIN TYP +85°C MAX 600 MIN TYP MAX 600 UNITS mV SUPPLY CURRENT Power-Supply Current (Note 4) ICC MAX9370/ MAX9372 18 28 20 28 22 28 MAX9371 9.5 16 10.5 16 11.5 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%), 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 SYMBOL CONDITIONS -40°C MIN TYP +25°C MAX Maximum Toggle Frequency fMAX VOH - VOL ≥ 600mV 1.0 1.5 Input-toOutput Propagation Delay tPLH, tPHL Figure 1 200 270 400 Output-toOutput Skew tSKQQ MAX9370/ MAX9372 (Note 6) 10 50 Output Rise/ Fall Time tR, tF Figure 1 Added Deterministic Jitter tDJ 1Gbps 223 - 1 PRBS pattern (Note 7) Added Random Jitter tRJ 1GHz clock (Note 7) 80 250 +85°C MIN TYP 1.0 1.5 200 270 400 7 50 80 MAX 250 TYP 1.0 1.5 200 270 400 ps 7 50 ps 250 ps 80 MAX UNITS MIN GHz 40 60 40 60 40 60 ps(P-P) 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 = +25°C. 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 MAX9370/MAX9371/MAX9372 DC ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (MAX9371, VCC = 3.3V, VIH = 2.4V, VIL = 0.4V, outputs terminated with 50Ω to VCC - 2V, input transition time = 125ps (20% to 80%), TA = +25°C, unless otherwise noted.) DIFFERENTIAL OUTPUT VOLTAGE (VOH - VOL) vs. FREQUENCY MAX9370/MAX9372 18 14 MAX9371 10 600 400 -40 -15 10 35 60 FALLING EDGE RISING EDGE 220 180 0 85 240 200 200 0 6 0.4 0.8 1.2 1.6 2.0 -40 FREQUENCY (GHz) TEMPERATURE (°C) -15 10 PROPAGATION DELAY vs. TEMPERATURE PROPAGATION DELAY (ps) MAX9370 toc04 290 280 270 260 250 240 -40 -15 10 35 35 TEMPERATURE (°C) 300 60 85 TEMPERATURE (°C) 4 MAX9370 toc03 800 f = 100MHz TRANSITION TIME (ps) 22 TRANSITION TIME vs. TEMPERATURE 260 MAX9370 toc02 ALL INPUTS AND OUTPUTS ARE OPEN 1000 DIFFERENTIAL OUTPUT VOLTAGE (mV) 26 MAX9370 toc01 SUPPLY CURRENT vs. TEMPERATURE SUPPLY CURRENT (mA) MAX9370/MAX9371/MAX9372 LVTTL/TTL-to-Differential LVPECL/PECL Translators _______________________________________________________________________________________ 60 85 LVTTL/TTL-to-Differential LVPECL/PECL Translators PIN NAME FUNCTION SO µMAX SOT23 1 8 Q0 2 7 Q0 Inverting Differential LVPECL/PECL Output 0. Typically terminate with 50Ω resistor to VCC - 2V. 3 6 Q1 Noninverting Differential LVPECL/PECL Output 1. Typically terminate with 50Ω resistor to VCC - 2V. 4 5 Q1 Inverting Differential LVPECL/PECL Output 1. Typically terminate with 50Ω resistor to VCC - 2V. 5 2 GND 6 4 D1 LVTTL/TTL Input 1. LVTTL/TTL input for translator corresponding to output Q1 and Q1. 7 3 D0 LVTTL/TTL Input 0. LVTTL/TTL input for translator corresponding to output Q0 and Q0. 8 1 VCC Positive Supply Voltage. Bypass VCC to GND with 0.1µF and 0.01µF ceramic capacitors. Place the capacitors as close to the device as possible with the smaller value capacitor closest to the device. Noninverting Differential LVPECL/PECL Output 0. Typically terminate with 50Ω resistor to VCC - 2V. Ground. Provide a low-impedance connection to ground plane. Pin Description for the MAX9371 PIN FUNCTION NAME SO µMAX SOT23 1, 4, 6 4, 5, 8 N.C. 2 7 Q Noninverting Differential LVPECL/PECL Output. Typically terminate with 50Ω resistor to VCC - 2V. 3 6 Q Inverting Differential LVPECL/PECL Output. Typically terminate with 50Ω resistor to VCC - 2V. 5 2 GND 7 3 D 8 1 VCC No Connection. No internal connection. Ground. Provide a low-impedance connection to ground plane. LVTTL/TTL Input Positive Supply Voltage. Bypass VCC to GND with 0.1µF and 0.01µF ceramic capacitors. Place the capacitors as close to the device as possible with the smaller value capacitor closest to the device. 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 50Ω 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 MAX9370/MAX9371/MAX9372 Pin Description for the MAX9370/MAX9372 MAX9370/MAX9371/MAX9372 LVTTL/TTL-to-Differential LVPECL/PECL Translators 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. Supply Bypassing Bypass VCC to GND with high-frequency surface-mount ceramic 0.1µF and 0.01µF capacitors in parallel and as close to the device as possible, with the 0.01µF capacitor closest to the device. Use multiple parallel vias to minimize parasitic inductance. PC Board Traces Input and output trace characteristics affect the performance of the MAX9370/MAX9371/MAX9372. Connect each differential output to a 50Ω characteristic impedance trace. Minimize the number of vias to prevent impedance discontinuities. Reduce reflections by maintaining the 50Ω characteristic impedance through connectors and across cables. Reduce skew within a differential pair by matching the electrical length of the traces. Chip Information TRANSISTOR COUNT: 358 PROCESS: Bipolar VIH 50% 50% D_ VIL tPLH tPHL VOH Q_ VOH - VOL VOL Q_ 80% VOH - VOL 80% 0V (DIFFERENTIAL) VOH - VOL 20% 20% Q_ - Q_ tR tF Figure 1. Input-to-Output Propagation Delay and Transition Timing Diagram 6 _______________________________________________________________________________________ LVTTL/TTL-to-Differential LVPECL/PECL Translators N.C. 1 8 VCC VCC 1 Q 2 7 D GND Q 3 6 N.C. N.C. 4 5 GND MAX9371 8 N.C. 2 7 Q D 3 6 Q N.C. 4 5 N.C. SO/µMAX MAX9371 SOT23 MAX9370/MAX9372 MAX9370/MAX9372 Q0 1 8 VCC VCC 1 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/µMAX SOT23 _______________________________________________________________________________________ 7 MAX9370/MAX9371/MAX9372 Pin Configurations/Functional Diagrams Package Information SOT23, 8L.EPS (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.) 4X S 8 E ÿ 0.50±0.1 8 INCHES DIM A A1 A2 b H c D e E H 0.6±0.1 1 L 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 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 8LUMAXD.EPS MAX9370/MAX9371/MAX9372 LVTTL/TTL-to-Differential LVPECL/PECL Translators MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 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 A1 A2 e FRONT VIEW A α c b L SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 8L uMAX/uSOP APPROVAL DOCUMENT CONTROL NO. 21-0036 8 REV. J 1 1 _______________________________________________________________________________________ LVTTL/TTL-to-Differential LVPECL/PECL Translators 9LUCSP, 3x3.EPS 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 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX9370/MAX9371/MAX9372 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.)