UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 www.ti.com SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 Complementary Switch FET Drivers Check for Samples: UC1714, UC1715, UC2714, UC2715, UC3714, UC3715 FEATURES DESCRIPTION • • These two families of high speed drivers are designed to provide drive waveforms for complementary switches. Complementary switch configurations are commonly used in synchronous rectification circuits and active clamp/reset circuits, which provide zero voltage switching. In order to facilitate the soft switching transitions, independently programmable delays between the two output waveforms are provided on these drivers. The delay pins also have true-zero voltage-sensing capability which allows immediate activation of the corresponding switch when zero voltage is applied. These devices require a PWM-type input to operate and interface with commonly available PWM controllers. 1 • • • • • • • • Single Input (PWM and TTL Compatible) High-Current Power FET Driver, 1-A Source and 2-A Sink Auxiliary Output FET Driver, 0.5-A Source and 1-A Sink Time Delays Between Power and Auxiliary Outputs Independently Programmable from 50 to 500-ns Time Delay or True Zero-Voltage Operation Independently Configurable for Each Output Switching Frequency to 1 MHz Typical 50-ns Propagation Delays ENBL Pin Activates 220-μA Sleep Mode Power Output is Active-Low in Sleep Mode Synchronous Rectifier Driver In the UC1714 series, the AUX output is inverted to allow driving a p-channel MOSFET. In the UC1715 series, the two outputs are configured in a true complementary fashion. BLOCK DIAGRAM 50ns ±500ns INPUT 6 TIMER S Q T1 7 R PWR 4 AUX 1 VCC 3 GND UC1714 ONLY VREF 50ns ±500ns TIMER S Q T2 2 5 R VREF VCC 5V BIAS ENBL 3V GND LOGIC GATES TIMER REF 1.4V ENBL 8 ENABLE Pin numbers refer to J, N and D packages. 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. UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1999–2013, Texas Instruments Incorporated UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) (2) MIN Auxiliary Driver IOH Auxiliary Driver IOL MAX UNIT continuous –100 mA peak –500 mA 200 mA continuous peak 1 Input Voltage Range (INPUT, ENBL) –0.3 Power Driver IOH 20 continuous –200 peak Power Driver IOL continuous peak VCC Lead Temperature (Soldering 10 seconds) Operating Junction Temperature (3) Storage Temperature Range (1) (2) (3) –65 V mA –1 A 400 mA 2 Supply voltage A A 20 V 300 °C 150 °C 150 °C Consult the Packaging Section at the end of this datasheet for thermal limitations and specifications of packages. 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 under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Unless otherwise indicated, voltages are referenced to ground and currents are positive into, negative out of, the specified terminals. ELECTRICAL CHARACTERISTICS Unless otherwise stated, VCC = 15 V, ENBL ≥ 2 V, RT1 = 100 kΩ from T1 to GND, RT2 = 100 kΩ from T2 to GND, and −55°C < TA < 125°C for the UC1714 and UC1715, –40°C < TA < 85°C for the UC2714 and UC2715, and 0°C < TA < 70°C for the UC3714 and UC3715, TA = TJ PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Overall VCC 7 ICC 20 V Nominal ENBL = 2 V 18 24 mA Sleep mode ENBL = 0.8 V 200 300 µA Pre turn-on PWR output, low VCC = 0 V, IOUT = 10 mA, ENBL at 0.8 V 0.3 1.6 V PWR output low, sat. INPUT = 0.8 V, IOUT = 40 mA 0.3 0.8 INPUT = 0.8 V, IOUT = 400 mA 2.1 2.8 INPUT = 2 V, IOUT = −20 mA 2.1 3 INPUT = 2 V, IOUT = −200 mA 2.3 3 Rise time CL = 2200 pF 30 60 ns Fall time CL = 2200 pF 25 60 ns T1 Delay, AUX to PWR INPUT rising edge, RT1 = 10 kΩ (1) 20 35 80 INPUT rising edge, RT1 = 100 kΩ (1) 350 500 700 INPUT falling edge, 50% (2) 35 100 VIN = 2 V, IOUT = 20 mA 0.3 0.8 VIN = 2 V, IOUT = 200 mA 1.8 2.6 VIN = 0.8 V, IOUT = –10 mA 2.1 3 VIN = 0.8 V, IOUT = –100 mA 2.3 3 CL = 1000 pF 45 60 Power Driver (PWR) VPWR VCC − VPWR PWR output high, sat. PWR Prop Delay V V ns ns Auxiliary Driver (AUX) VAUX VCC – VAUX AUX output low, sat. AUX output high, sat. Rise Time (1) (2) 2 V V ns T1 delay is defined from the 50% point of the transition edge of AUX to the 10% of the rising edge of PWR. T2 delay is defined from the 90% of the falling edge of PWR to the 50% point of the transition edge of AUX. Propagation delay times are measured from the 50% point of the input signal to the 10% point of the output signal’s transition with no load on outputs. Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 www.ti.com SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise stated, VCC = 15 V, ENBL ≥ 2 V, RT1 = 100 kΩ from T1 to GND, RT2 = 100 kΩ from T2 to GND, and −55°C < TA < 125°C for the UC1714 and UC1715, –40°C < TA < 85°C for the UC2714 and UC2715, and 0°C < TA < 70°C for the UC3714 and UC3715, TA = TJ PARAMETER TEST CONDITIONS Fall Time CL = 1000 pF T2 Delay, PWR to AUX INPUT falling edge, RT2 = 10 kΩ (1) INPUT falling edge, RT2 = 100 kΩ (1) MIN TYP MAX 30 60 20 50 80 250 350 550 35 80 INPUT rising edge, 50% (2) AUX Prop Delay UNIT ns ns ns Enable (ENBL) 1.2 2 V IIH Input Threshold Input Current ENBL = 15 V 0.8 1 10 µA IIL Input Current ENBL = 0 V –1 –10 µA Current Limit T1 = 0 V –1.6 –2 mA 3 3.3 V 40 70 ns –1.2 –2 mA 3 3.3 V 50 100 ns T1 Nominal Voltage at T1 2.7 Minimum T1 Delay T1 = 2.5 V (1) Current Limit T2 = 0 V T2 Nominal Voltage at T2 Minumum T2 Delay 2.7 T2 = 2.5 V (1) Input (INPUT) 1.4 2 V IIH Input Threshold Input Current INPUT = 15 V 0.8 1 10 µA IIL Input Current INPUT = 0 V –5 –20 µA DEVICE INFORMATION DIL-8, SOIC-8; J or N, D Packages (TOP VIEW) Copyright © 1999–2013, Texas Instruments Incorporated SOIC-16; DP Package (TOP VIEW) Submit Documentation Feedback Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 3 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 www.ti.com PIN DESCRIPTIONS AUX The AUX switches immediately at the rising edge of INPUT’but waits through the T2 delay after the falling edge of INPUT before switching. AUX is capable of sourcing 0.5 A and sinking 1 A of drive current. See the Time Relationships diagram below (Figure 1) for the differences between the UC1714 and UC1715 for INPUT, MAIN, and AUX. During sleep mode, AUX is inactive with a high impedance. ENBL The ENBL input switches at TTL logic levels (approximately 1.2 V), and the input range is from 0 to 20 V. The ENBL input places the device into sleep mode when it is a logical low. The current into VCC during the sleep mode is typically 220 μA. GND This is the reference pin for all input voltages and the return point for all device currents. GND carries the full peak sinking current from the outputs. Any tendency for the outputs to ring below GND voltage must be damped or clamped such that GND remains the most negative potential. INPUT The input switches at TTL logic levels (approximately 1.4 V) but the allowable range is from 0 to 20 V, allowing direct connection to most common IC PWM controller outputs. The rising edge immediately switches the AUX output, and initiates a timing delay, T1, before switching on the PWR output. Similarly, the INPUT falling edge immediately turns off the PWR output and initiates a timing delay, T2, before switching the AUX output. Note that if the input signal comes from a controller with FET drive capability, this signal provides another option. INPUT and PWR provide a delay only at the leading edge while INPUT and AUX provide the delay at the trailing edge. PWR The PWR output waits for the T1 delay after the rising edge of INPUT before switching on, but switches off immediately at the falling edge of INPUT’(neglecting propagation delays). This output is capable of sourcing 1 A and sinking 2 A of peak gate-drive current. PWR output includes a passive, self-biased circuit which holds this pin active low, when ENBL ≤ 0.8V regardless of the voltage of VCC. T1 A resistor to ground programs the time delay between the AUX switch turnoff and PWR turnon. T2 This pin functions in the same way as T1 but controls the time delay between PWR turnoff and activation of the AUX switch. T1, T2 The resistor on each of these pins sets the charging current on internal timing capacitors to provide independent time control. The nominal voltage level at each pin is 3 V and the current is internally limited to 1 mA. The total delay from INPUT to each output includes a propagation delay in addition to the programmable timer but because the propagation delays are approximately equal, the relative time delay between the two outputs can be assumed to be solely a function of the programmed delays. The relationship of the time delay vs. RT is shown in the TYPICAL CHARACTERISTICS curves (see Figure 2). Either or both pins are alternatively used for voltage sensing in lieu of delay programming, which is done by pulling the timer pins below their nominal voltage level which immediately activates the timer output. VCC The VCC input range is from 7 to 20 V. This pin must be bypassed with a capacitor to GND consistent with peak load current demands. 4 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 www.ti.com SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 TYPICAL CHARACTERISTICS T1 DELAY, T2 DELAY vs RT TIME RELATIONSHIPS INPUT PROPAGATION DELAYS PWR OUTPUT T1 DELAY T2 DELAY UC1714 AUX OUTPUT UC1715 AUX OUTPUT (2) T1 delay is defined from the 50% point of the transition edge of AUX to the 10% of the rising edge of PWR. T2 delay is defined from the 90% of the falling edge of PWR to the 50% point of the transition edge of AUX. Figure 1. Figure 2. ICC vs SWITCHING FREQUENCY WITH NO LOAD AND 50% DUTY CYCLE RT1 = RT2 = 50 k ICC vs RT WITH OPPOSITE RT = 50 k Figure 3. Figure 4. Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 5 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) 6 T1 DEADBAND vs TEMPERATURE AUX TO PWR T2 DEADBAND vs TEMPERATURE PWR TO AUX Figure 5. Figure 6. Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 www.ti.com SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 TYPICAL APPLICATIONS Figure 7. Typical Application With Timed Delays Figure 8. Using The Timer Input For Zero-Voltage Sensing Wake-up occurs with the first pulse while turnoff is determined by the (RTO CTO) time constant. Figure 9. Self-Actuated Sleep Mode With The Absence Of An Input PWM Signal Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 7 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 www.ti.com Figure 10. Using The UC1715 As A Complementary Synchronous Rectifier Switch Driver With N-Channel FETs VIN is limited to 10 V as VCC rises to approximately 2VIN. Figure 11. Synchronous Rectifier Application With A Charge Pump To Drive The High-Side N-Channel Buck Switch With active reset provided by the UC1714 driving an N-channel switch (Q1) and a P-channel auxiliary switch (Q2). Figure 12. Typical Forward Converter Topology 8 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 www.ti.com SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 Figure 13. Using An N-Channel Active Reset Switch With A Floating Drive Command Copyright © 1999–2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 9 UC1714, UC1715, UC2714 UC2715, UC3714, UC3715 SLUS170B – FEBRUARY 1999 – REVISED MAY 2013 www.ti.com REVISION HISTORY Changes from Revision A (January 2002) to Revision B Page • Added TI's general Absolute Maximum Ratings table note to end of Absolute Maximum table .......................................... 2 • Changed ENBL ≥ 0.8V to ENBL ≤ 0.8V in PWR pin description .......................................................................................... 4 • Changed layout from Unitrode Products datasheet to TI datasheet .................................................................................... 8 10 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: UC1714 UC1715 UC2714 UC2715 UC3714 UC3715 PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) (4) UC1714J OBSOLETE CDIP J 8 TBD Call TI Call TI -55 to 125 UC1715J OBSOLETE CDIP J 8 TBD Call TI Call TI -55 to 125 UC1715J883B OBSOLETE CDIP J 8 TBD Call TI Call TI -55 to 125 UC2714D ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR -40 to 85 UC2714D UC2714DG4 ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR -40 to 85 UC2714D UC2714DTR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR -40 to 85 UC2714D UC2714DTRG4 ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR -40 to 85 UC2714D UC2714J OBSOLETE CDIP J 8 TBD Call TI Call TI -40 to 85 UC2714N ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type -40 to 85 UC2714N UC2714NG4 ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type -40 to 85 UC2714N UC2715D ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR -40 to 85 UC2715D UC2715DG4 ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR -40 to 85 UC2715D UC2715DP ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 UC2715DP UC2715DPG4 ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 UC2715DP UC2715DTR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 UC2715D UC2715DTRG4 ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR -40 to 85 UC2715D UC2715N ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type -40 to 85 UC2715N UC2715NG4 ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type -40 to 85 UC2715N UC3714D ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR 0 to 70 UC3714D Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) (4) UC3714DG4 ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR 0 to 70 UC3714D UC3714DTR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR 0 to 70 UC3714D UC3714DTRG4 ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR 0 to 70 UC3714D UC3714N ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type 0 to 70 UC3714N UC3714NG4 ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type 0 to 70 UC3714N UC3715D ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR 0 to 70 UC3715D UC3715DG4 ACTIVE SOIC D 8 75 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR 0 to 70 UC3715D UC3715DP UC3715DP OBSOLETE SOIC D 16 TBD Call TI Call TI 0 to 70 UC3715DPG4 OBSOLETE SOIC D 16 TBD Call TI Call TI 0 to 70 UC3715DTR ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR 0 to 70 UC3715D UC3715DTRG4 ACTIVE SOIC D 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-250C-1 YEAR 0 to 70 UC3715D UC3715N ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type 0 to 70 UC3715N UC3715NG4 ACTIVE PDIP P 8 50 Green (RoHS & no Sb/Br) CU NIPDAU N / A for Pkg Type 0 to 70 UC3715N (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. Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 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. (4) Multiple Top-Side Markings will be inside parentheses. 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OTHER QUALIFIED VERSIONS OF UC1714, UC1715, UC2714, UC2714M, UC3714, UC3715 : • Catalog: UC3714, UC3715, UC2714 • Military: UC2714M, UC1714, UC1715 NOTE: Qualified Version Definitions: • Catalog - TI's standard catalog product • Military - QML certified for Military and Defense Applications Addendum-Page 3 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant UC2714DTR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 UC2715DTR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 UC3714DTR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 UC3715DTR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) UC2714DTR SOIC D 8 2500 367.0 367.0 35.0 UC2715DTR SOIC D 8 2500 367.0 367.0 35.0 UC3714DTR SOIC D 8 2500 367.0 367.0 35.0 UC3715DTR SOIC D 8 2500 367.0 367.0 35.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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