SN65ELT23 www.ti.com....................................................................................................................................................................................................... SLLS925 – JUNE 2009 5-V Dual Differential PECL Buffer-to-TTL Translator FEATURES 1 • • • • • • • • • Dual 5-V Differential PECL-to-TTL Buffer 24-mA TTL Ouputs Operating Range – PECL VCC = 4.75 V to 5.25 V with GND = 0 V Support for Clock Frequencies of 250 MHz (TYP) 3.5-ns Typical Propagation Delay Output Default Low with Inputs Left Open or <1.3 V Internal Input 50-kΩ Pull-Down Resistor Built-In Temperature Compensation Drop-In Compatible to the MC100ELT23 PIN ASSIGNMENT D or DGK PACKAGE (TOP VIEW) 8 VCC D0 2 7 Q0 D1 3 6 Q1 D1 4 5 GND PECL Data and Clock Transmission Over Backplane Signaling Level Conversion for Clock or Data DESCRIPTION PIN FUNCTION D0, D0, D1, D1 PECL inputs Q0, Q1 TTL outputs VCC Positive supply GND Ground The SN65ELT23 is a low power dual PECL-to-TTL translator device. The device includes circuitry to maintain a known logic low level when inputs are in an open condition. The SN65ELT23 is housed in an industry standard SOIC-8 package and is also available in an optional TSSOP-8 package. ORDERING INFORMATION (1) (2) (1) (2) TTL Table 1. Pin Descriptions APPLICATIONS • • D0 1 PART NUMBER PART MARKING PACKAGE LEAD FINISH SN65ELT23D SN65ELT23DGK ELT23 SOIC NiPdAu SIKI MSOP NiPdAu For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Leaded device options are not initially available; contact a sales representative for further details. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2009, Texas Instruments Incorporated SN65ELT23 SLLS925 – JUNE 2009....................................................................................................................................................................................................... www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) PARAMETER CONDITIONS VALUE UNIT 6 V 0 to 6 V mA Absolute supply voltage, VCC Absolute input voltage, VI GND = 0 and VI ≤ VCC Output current Continuous 50 Surge 100 Operating temperature range –40 to 85 °C Storage temperature range –65 to 150 °C (1) 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 conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATINGS PACKAGE CIRCUIT BOARD MODEL POWER RATING TA < 25°C (mW) THERMAL RESISTANCE, JUNCTION-TO-AMBIENT NO AIRFLOW DERATING FACTOR TA > 25°C (mW/°C) POWER RATING TA = 85°C (mW) SOIC Low-K 719 139 7 288 High-K 840 119 8 336 Low-K 469 213 5 188 High-K 527 189 5 211 MSOP THERMAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER θJB Junction-to-board thermal resistance θJC Junction-to-case thermal resistance MIN TYP SOIC 79 MSOP 120 SOIC 98 MSOP 74 MAX UNIT °C/W °C/W KEY ATTRIBUTES CHARACTERISTICS PARAMETER Moisture sensitivity level VALUE Level 1 Flammability rating (oxygen index: 28 to 34) UL 94 V-0 at 0.125 in Internal pull down resistor 50 KΩ Electrostatic discharge Human body model 2 KV Charged-device model 1.5 KV Machine model 200 V Meets or exceeds JEDEC Spec EIA/JESD78 latchup test 2 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): SN65ELT23 SN65ELT23 www.ti.com....................................................................................................................................................................................................... SLLS925 – JUNE 2009 PECL INPUT DC CHARACTERISTICS At VCC = 5.0 V, GND = 0.0 V (unless otherwise noted) (1) (2) TEST CONDITIONS PARAMETER VIH High-level input voltage, single-ended VIL Low-level input voltage, single-ended VIHCMR High-level input voltage common-mode range, differential IIH High-level input current IIL Low-level input current (1) (2) (3) (4) See (3) See (4) TA = –40°C MIN TA = 25°C TYP MAX TA = 85°C TYP MAX UNIT MIN TYP MAX 4120 3835 4120 mV 3190 2280 3525 3190 2280 3525 3190 2280 3525 mV 3835 MIN 4120 3835 2.2 5.0 2.2 5.0 255 0.5 2.2 175 0.5 5.0 V 175 µA µA 0.5 The device meets the specifications after thermal balance has been established when mounted in a socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. Input and output parameters vary 1:1 with VCC. VCC can vary ±0.25 V. TTL output RL = 500 Ω to GND VIHCMR(min) varies 1:1 with GND, VIHCMR(max) varies 1:1 with VCC. TTL OUTPUT DC CHARACTERISTICS At VCC = 4.75 V to 5.25 V, TA = –40°C to 85°C (unles otherwiase noted) (1) TYP MAX ICCH Power supply current PARAMETER 20 25 mA ICCL Power supply current 21 27 mA IOS Output short circuit current –150 –50 mA 2.4 VCC – 0.7V V 0.5 V VOH High-level output voltage VOL Low-level output voltage (1) (2) TEST CONDITIONS (2) MIN IOH = –3.0 mA IOL = 24 mA UNIT The device meets the specifications after thermal balance has been established when mounted in a socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. Max level is assured by design AC CHARACTERISTICS At VCC = 5.0 V, GND = 0.0 V (unless otherwise noted) (1) (2) (3) TEST CONDITIONS PARAMETER TA = –40°C MIN fMAX Max switching frequency at Vol < 0.5V and Voh > 2.4V (see Figure 5) tPLH/tPHL Propagation delay times to output At 1.5 V tJITTER Random clock jitter (RMS) VPP Input voltage swing tr/tf Output rise times (10%–90%) 1.0 Output fall times (10%–90%) 0.5 (1) (2) (3) (4) (4) TA = 25°C TYP MAX MIN 250 2.0 MIN 250 3.5 5.0 4.1 10 200 TA = 85°C TYP MAX 2.0 1000 200 1.7 3.0 1.0 1.0 1.6 0.5 TYP MAX 250 3.7 5.0 3.7 10 2.0 UNIT MHz 3.9 5.0 3.7 10 ps 1000 mV ns 1000 200 1.8 3.0 1.0 1.9 3.0 1.1 1.6 0.5 1.3 1.6 ns The device meets the specifications after thermal balance has been established when mounted in a socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. VCC can vary ±0.25 V. TTL output RL = 500 Ω to GND and CL = 20 pF to GND, see Figure 1. VPP(min) is the minimum input swing for which AC parameters are assured. Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): SN65ELT23 3 SN65ELT23 SLLS925 – JUNE 2009....................................................................................................................................................................................................... www.ti.com Typical Output Loading Used for Device Evaluation Application TTL Receiver RL *CL *Includes fixture Capacitance AC TEST LOAD GND Figure 1. TTL Output Loading Used for Device Evaluation 90% 10% tf tr Figure 2. Output Rise and Fall Times IN IN 1.5 V 1.5 V OUT tPLH tPHL Figure 3. Output Propagation Delay D VPP(min) VPP(max) D Figure 4. Input Voltage Swing 4 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): SN65ELT23 SN65ELT23 www.ti.com....................................................................................................................................................................................................... SLLS925 – JUNE 2009 OUTPUT VOLTAGE vs FREQUENCY 5 VCC = 5 V VOH @ TA = −40°C VOL @ TA = 25°C PO − Output Voltage − V 4 VOH @ TA = 85°C 3 VOH @ TA = 25°C 2 VOL @ TA = 85°C 1 VOL @ TA = −40°C 0 0 50 100 150 200 250 300 350 400 450 500 f − Frequency − MHz G001 Figure 5. Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): SN65ELT23 5 PACKAGE OPTION ADDENDUM www.ti.com 2-Jul-2009 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty SN65ELT23D ACTIVE SOIC D 8 Lead/Ball Finish 75 Green (RoHS & no Sb/Br) CU NIPDAU MSL Peak Temp (3) Level-1-260C-UNLIM SN65ELT23DGK PREVIEW MSOP DGK 8 80 TBD Call TI Call TI SN65ELT23DGKR PREVIEW MSOP DGK 8 2500 TBD Call TI Call TI SN65ELT23DR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. 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Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 7-Aug-2009 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN65ELT23DGKR Package Package Pins Type Drawing MSOP DGK 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 5.3 B0 (mm) K0 (mm) P1 (mm) 3.4 1.4 8.0 W Pin1 (mm) Quadrant 12.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 7-Aug-2009 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN65ELT23DGKR MSOP DGK 8 2500 346.0 346.0 29.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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