Edge649 Octal Pin Electronics Driver/Receiver EDGE HIGH-PERFORMANCE PRODUCTS Description Features The Edge649 is an octal pin electronics driver and receiver combination fabricated in a high- performance CMOS process. It is designed for automatic test equipment and instrumentation where cost, functional density, and power are all at a premium. • • • • • • • • The Edge649 incorporates eight channels of programmable drivers and receivers into one package. Each channel has per pin driver levels, receiver threshold, and tristate control. 50 MHz Operation 11 V DUT I/O Range Programmable Output Levels Programmable Input Thresholds Per Pin Flexibility High Integration Levels 615 mW Quiescent Power Dissipation Edge648 Compatible The 11V driver output and receiver input range allows the Edge649 to interface directly between TTL, ECL, CMOS (3V, 5V, and 8V), and custom level circuitry. The Edge649 is pin and functionally compatible with the EDGE648, with the following performance differences: • reduced driver preshoot • faster driver propagation delay • superior driver pulse width distortion • higher driver Fmax operation • slightly slower driver output slew rates • higher comparator Fmax operation • lower comparator propagation delay • superior comparator pulse width distortion. Functional Block Diagram VHIGH VLOW 8 8 8 DATA IN Applications 8 8 DUT DVR EN* • • • • • • • Burn-In ATE Functional Board Testers In-Circuit Board Testers Combinational Board Testers Low Cost Chip Testers ASIC Verifiers VXI-Based Test Equipment Revision 1/ October 28, 1996 8 + DATA OUT – 1 8 THRESHOLD www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS PIN Description Pin Name Pin Number DATA IN (0:7) 64, 65, 66, 67, 3, 4, 5, 6 TTL compatible inputs that determine the high/low status of the DUT drivers. DATA OUT (0:7) 56, 57, 58, 59, 11, 12, 13, 14 CMOS level outputs that indicate the status of the DUT receivers. DUT (0:7) 46, 43, 40, 37, 33, 30, 27, 24 Pin electronic inputs/outputs that receive/drive the device under test. DVR EN (0:7) 60, 61, 62, 63, 7, 8, 9, 10 TTl compatible inputs that control the high impedance state of the DUT drivers. VHIGH (0:7) 45, 44, 39, 38, 32, 31, 26, 25 Unbuffered analog inputs that set the voltage level of a logical 1 of the DUT drivers. VLOW (0:7) 44, 42, 41, 36, 34, 29, 28, 23 Unbuffered analog inputs that set the voltage level of a logical 0 of the DUT drivers. THRESHOLD (0:7) 50, 51, 52, 53, 17, 18, 19, 20 Buffered analog input voltage that sets the threshold for the DUT comparators. VCC 21, 49 Analog positive power supply. VEE 22, 48 Analog negative power supply. VDD 1, 15, 55 GND 2, 16, 54, 68 Device ground. N/C 35 No connection. 2000 Semtech Corp. Description Digital power supply. 2 www.semtech.com Edge649 DVR EN*0 DATA OUT3 DATA OUT2 DATA OUT1 DATA OUT0 VDD GND THRESHOLD3 THRESHOLD2 THRESHOLD1 THRESHOLD0 VCC VEE VLOW0 DUT0 VHIGH0 VHIGH1 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 EDGE HIGH-PERFORMANCE PRODUCTS PIN Description (continued) 3 33 DUT4 DATA IN5 4 32 VHIGH4 DATA IN6 5 31 VHIGH5 DATA IN7 6 30 DUT5 DVR EN*4 7 29 VLOW5 DVR EN*5 8 28 VLOW6 DVR EN*6 9 27 DUT6 2000 Semtech Corp. 3 26 DATA IN4 VHIGH6 VLOW4 25 34 DUT7 NC 2 VHIGH7 VDD GND 24 VLOW3 35 VLOW7 36 1 23 68 22 GND VEE DUT3 21 37 VCC 67 20 DATA IN3 THRESHOLD7 VHIGH3 19 38 THRESHOLD6 66 THRESHOLD5 DATA IN2 18 VHIGH2 17 39 THRESHOLD4 65 16 DUT2 DATA IN1 GND DATA IN0 15 VLOW2 40 VDD 41 64 14 63 DATA OUT7 DVR EN*3 13 VLOW1 DATA OUT6 42 DATA OUT5 62 12 DVR EN*2 11 DUT1 DATA OUT4 43 10 61 DVR EN*7 DVR EN*1 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Circuit Description VHIGH and VLOW Driver Description VHIGH VLOW VHIGH and VLOW define the logical “1” and “0” levels of the DUT driver and can be adjusted anywhere over the range determined by VCC and VEE. Table 1 documents the relationship between the analog power to supplies (VCC and VEE), the driver range (VHIGH and VLOW), and the comparator threshold range (VTHRESHOLD). DATA IN DUT DVR EN* The VHIGH and VLOW inputs are unbuffered in that they also provide the driver output current (see Figure 3), so the source of VHIGH and VLOW must have ample current drive capability. Figure 1. Driver Diagram As shown in Figure 1, Edge649 supports programmable high and low levels and tristate per channel. There are no shared lines between any drivers. The DVR EN* and DATA IN signals are TTL compatible inputs that control the driver (see Figure 2). VHIGH With DVR EN* high, the DUT driver goes into a high impedance state. With DVR EN* low, DATA IN high forces the driver into a high state (DUT = VHIGH), and DATA IN low forces the driver low (DUT = VLOW). DUT DVR EN* VLOW DATA IN VHIGH DUT Figure 3. Simplified Model of the Unbuffered Output Stage VLOW Figure 2. Driver Functionality Drive/Receive Common Mode Range Threshold Range Power Supply Conditions 0V <= DUT <= +6.5V 0.1V <= T HR ESHOLD <= 5.0V V C C = +6.5V V EE = 0V 0V <= DUT <= +8V 0.1V <= T HR ESHOLD <= 6.5V V C C = +8V V EE = 0V 0V <= DUT <= +11V 0.1V <= T HR ESHOLD <= 9.5V V C C + 11V V EE = 0V -3V <= DUT <= +8V -2.9V <= T HR ESHOLD <= 6.5V V C C = +8V V EE = -3V Table 1. Power Supply Requirement 2000 Semtech Corp. 4 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Circuit Description (continued) Driver Output Protection In a functional testing environment, where a resistor is added in series with the driver output, the Edge649 can withstand a short to any legal DUT voltage for an indefinite amount of time. In a low impedance application with no additional output series resistance, care must be exercised and systems should be designed to check for this condition and tristate the driver if a short is detected. Receiver Functionality Edge649 supports programmable thresholds per channel. There are no shared lines between comparators. THRESHOLD is a high input impedance analog input which defines a logical “1” and “0” at the DUT (see Figure 4). If the DUT voltage is more positive than THRESHOLD, DATA OUT will be high. With DUT lower than THRESHOLD, DATA OUT will be low. DATA OUT + DUT – THRESHOLD THRESHOLD DUT DATA OUT Tpd Figure 4. Receiver Functionality 2000 Semtech Corp. 5 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Application Information Power Supplies The Edge649 uses three power supplies – VDD, VCC and VEE. VDD, typically +5V, is the digital supply for all of the data inputs and outputs. VCC and VEE are the analog power supplies for the DUT drivers and comparators. VCC ranges from +6.5V to +11V, and must be greater than or equal to VDD + 1.5V. VEE is the negative analog power and typically varies from 0V to – 3V. VCC and VEE, which power the DUT drivers and receivers, should also be decoupled to GND with a .1 µF chip capacitor in parallel with a .001 µF chip capacitor. A VCC and VEE plane, or at least a solid power bus, is recommended for optimal performance. The Edge649 has several power supply requirements to protect the part in power supply fault situations, as well as during power up and power down sequences. VCC must remain greater than or equal to VDD at all times. Both VCC and VDD must always be positive (above ground), and VEE must always be negative (at or below ground). As the VHIGH and VLOW inputs are unbuffered and must supply the driver output current, decoupling capacitors for these inputs are recommended in proportion to the amount of output current the application requires The three-diode configuration shown in Figure 5, used on a once-per-board basis, insures power supply sequence and fault tolerance. Although the Edge649 can drive and receive 11V swings, these 11 V signals can be adjusted over an 14V range. By using programmable regulators V1 and V2 for the VCC and VEE supplies (feasible because these two analog power supplies do not supply driver output current), the Edge649 I/O range can be optimized for a variety of applications (see Figure 6). VCC VHIGH and VLOW Decoupling Expanding the Common Mode Range VDD V1 1N5820 or Equivalent VCC Edge 649 VEE VDD Figure 5. Power Supply Protection Scheme V2 Power Supplies Decoupling Figure 6. VDD, which provides the digital power, should be decoupled to GND with a .1 µF chip capacitor in parallel with a .001 µF chip capacitor. The bypass capacitors should be as close to the device as possible. Power and ground planes are recommended to provide a low inductance return path. 2000 Semtech Corp. 6 There are three rules which govern the supplies V1 and V2: 1) 2) 3) VDD + 1.5V ≤ V1 ≤ +11V –3V ≤ V2 ≤ 0V (V1 – V2) ≤ 11V www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Application Information (continued) Window Comparator Trinary Driver Certain applications require a dual threshold window comparator to distinguish between the DUT being high, low, or floating. To support this application, two Edge649 channels can be combined to create one channel with a window comparator (see Figure 7). Notice that connecting two DUT pins ties together the positive inputs of both receivers. The result is a difference in polarity between the digital outputs reporting the high and low status of the DUT. At times, there is a need for a three-level driver. Typically, two levels are required for the standard digital “1” and “0” pattern generation. The third level provides a higher voltage to place the device under test (DUT) into a programming or test mode. By controlling the DATA IN and DVR EN* inputs, a trinary driver with tristate is realizable (see Figure 8). Driver with Pull Up/Pull Down – DUT HIGH High Threshold + DUT + DUT LOW* – Low Threshold Figure 7. Edge649 as a Window Comparator Once two receivers are connected as window comparators, the two drivers also get connected in parallel. This dual driver configuration supports a multitude of applications that have traditionally been difficult to accommodate. VHIGH A As the drivers are unbuffered, paralleling two drivers for one DUT node provides a means for adding pull up or pull down capability. By connecting the VHIGH and VLOW inputs of one driver through a resistor to a voltage, additional functionality that would normally require an external relay on the DUT transmission line to engage and disengage these functions is realizable. One common application for the pull up feature is testing open collector devices. The pull down satisfies open emitter DUTs (typically ECL). Either the pull up or down could be used to establish a default high impedance voltage on a bidirectional bus. Notice that in all applications, the resistors can be switched dynamically or statically. VLOW A DATA IN A DVR EN*A VHIGH B VHIGH B VHIGH A VLOW A DUT DATA IN B DVR EN*B Figure 8. Trinary Driver 2000 Semtech Corp. 7 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Application Information (continued) Also, either the pull up or pull down resistor could be used to terminate the transmission from the DUT to the pin electronics in an effort to minimize any reflections. VHIGH A VLOW A DATA IN A DUT Two Logic Family Driver Many test systems support exactly two families of driver and receiver levels and select between family A and family B settings on a per-pin basis, typically using an analog multiplexer, (See Figure 11.) Common examples of these families are: DVR EN*A Family A = TTL Family B = CMOS or Family A = TTL Family B = ECL VHIGH B VPULL UP DATA IN B VPULL DOWN DVR EN*B VLOW B Figure 9. Driver with Pull Up/Pull Down The Edge649 supports this system architecture with minimal hardware and the elimination of the per-pin analog multiplexer. The drive and receive levels need to be generated once per system, then distributed and buffered suitably. Trinary Driver with Termination Other combinations are also possible. For example, two parallel drivers can be configured to implement one trinary driver with a pull down (or pull up) dynamic termination (see Figure 10). VHIGH A Two drivers in parallel also offer the possibility of connecting force and sense parametric circuitry to the DUT without adding additional circuitry to the controlled impedance DUT line. For example, Figure 12 shows the second driver being utilized to force a current and measure a voltage. VLOW A DATA IN A DVR EN*A DUT VHIGH B Parametric Functions VTERMINATION DATA IN B Notice that the VHIGH and VLOW pins are used from different drivers to allow the force and sense functions to be active simultaneously. DVR EN*B Figure 10. Trinary Driver with Termination CHANNEL 1 CHANNEL n VHIGH A VHIGH B DVR EN*A DVR EN*A DVR DATA DVR DATA DUT0 DUT0 DVR EN*B DVR EN*B VLOW B VLOW A Figure 11. Family A/B Using Two Drivers Per Pin 2000 Semtech Corp. 8 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Application Information (continued) Optional Output Configuration Certain functional applications require a series output resistor yet also demand that the comparator be connected directly to the DUT, not via the backmatch resistor. To create this configuration, two distinct termination resistors may be connected to the VHIGH and VLOW input pins (see Figure 13). VHIGH PROGRAMMABLE CURRENT SOURCE VHIGH DUT DATA IN A VLOW DATA EN* A VLOW DUT VOLTAGE MEASUREMENT UNIT DATA IN B DATA EN* B Figure 13. Functional Application with the Comparator Connected Directly to the DUT Figure 12. Edge649 Supporting Parametric Testing Thermal Information Parameter Symbol Min Typ Max Units T hermal R esist anc e Junc t ion t o C ase θJC 9.8 oC / W Junc t ion t o A ir St ill A ir 5 0 LF P M 400 LF P M θJA θJA θJA 34 26 19 oC / W oC / W oC / W 2000 Semtech Corp. 9 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Package Information 68 Pin PLCC Package θJA = 42 to 48˚C / W 0.990 SQ [25.146] PIN Descriptions 0.953 SQ [24.206] 0.045 SQ [1.143] 0.048 [1.219] 0.800 REF [20.32] 0.175 [4.445] 0.016 [0.406] 0.029 [0.736] 0.016 [0.406] See Detail A 0.910 [23.114] 0.113 [2.87] 0.029 [0.736] ;; ; 0.020 [0.508] MIN 0.065 [1.651] 0.030 [0.762] Notes: (unless otherwise specified) 1. Dimensions are in inches [millimeters]. 2. Tolerances are: .XXX ± 0.005 [0.127]. 3. PLCC packages are intended for surface mounting on solder lands on 0.050 [1.27] centers. 2000 Semtech Corp. 10 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Recommended Operating Conditions Parameter Symbol Min Typ Max Units Dig it al P ow er Supply V DD 4.5 5 5.5 V A nalog P osit iv e P ow er Supply VCC V DD + 1.5 11 V A nalog Neg at iv e P ow er Supply V EE -3 0 V T ot al A nalog P ow er Supply V C C - V EE 6.5 11 V Driv er Hig h Out put V olt ag e VH I G H V EE + 2.5 VCC V Driv er Low Out put V olt ag e VLO W V EE V C C - 3V V T ot al Driv er Out put Sw ing VH I G H - VLO W 0 11 V R ec eiv er T hreshold V olt ag e T HR ESHOLD V EE + 0.1 V C C - 1.5 V TA TJ 0 0 +70 +125 oC oC Symbol Min Max Units 13 V A mbient Operat ing T emperat ure Absolute Maximum Ratings Parameter T ot al A nalog P ow er Supply V C C - V EE Typ P osit iv e A nalog P ow er Supply VCC +5.0 13 V Neg at iv e A nalog P ow er Supply V EE -4.0 0.5 V Driv er Hig h Out put V olt ag e VH I G H V EE - .5 V C C + .5 V Driv er Low Out put V olt ag e VLO W V EE - .5 V C C + .5 V Driv er Out put Sw ing VH I G H - VLO W -5 12 V R ec eiv er T hreshold V olt ag e T HR ESHOLD V EE - .5 V C C + .5 V DA T A I N DV R EN* GND - .5 V DD + .5 V V DD 0 6.5 V A mbient Operat ing T emperat ure TA -55 +125 oC St orag e T emperat ure TS -65 +150 oC Junc t ion T emperat ure TJ +150 oC Soldering T emperat ure T SOL 260 oC Dig it al I nput s Dig it al P ow er Supply Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at these, or any other conditions beyond those listed, is not implied. Exposure to absolute maximum conditions for extended periods may affect device reliability. 2000 Semtech Corp. 11 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS DC Characteristics Parameter Symbol Min V H I G H - VL O W DC Driver Output Current (Note 1) Typ Max Units 0 11 V IO U T -125 +125 mA Output Impedance RO U T 3 12 Ω DUT Pin Capacitance CO U T Driver/Receiver Characteristics Output Voltage Swing DUT Output voltage Receiver Threshold Level 20 pF DUT<0:7> VEE VCC V VT H R E S H O L D VEE + 0.1 VCC - 1.5 V 0 1.0 µA .002 1.0 µA +25 100 mV 25 25 20 40 40 35 mA mA mA Threshold Bias Current DUT Leakage Input Current IB I A S Receiver Offset Voltage VOS Quiescent Power Supply Current Positive Power Supply Negative Power Supply Digital Power Supply ICC IEE IDD Driver Headroom Driver High to VEE Driver Low to VCC 8 -100 V H I G H - VE E VCC - VL O W 2.5 3.0 V V Input High Voltage VIHM IN 2.0 V Input Low Voltage VILM A X 0.8 V Input Current II N 1.0 µA Input Capacitance CI N Digital Inputs DATA IN (0:7), DVR EN* (0:7) 5 pF Digital Outputs DATA OUT (0:7) Output Voltage High (Note 2) VOH Output Voltage Low (Note 3) VOL DC Output current IO U T Note 1 : Note 2: Note 3: VDD - .4 -4 V GND + .4 V 4 mA Output current specification is per individual driver. Output current of 4 mA. Output current of –4 mA. 2000 Semtech Corp. 12 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS AC Characteristics Parameter Symbol Min Typ Max Units T1 T2 T3 T4 12 8 17 12 20 15 25 20 33 27 38 33 ns ns ns ns Propagation Delay DATA IN <0:7> to DUT <0:7> (Note 2) DUT <0:7> to DATA OUT <0:7> (Note 3) Active to HiZ (Note 4) HiZ to Active (Note 4) DUT Output Rise/Fall Times (Note 1) 1V Swing (20% - 80%) 3V Swing (10% - 90%) 5V Swing (10% - 90%) 8V Swing (10% - 90%) 10V Swing (10% - 90%) Digital Outputs (DATA OUT <0:7>) DATA OUT Rise Time (10% - 90%) DATA OUT Fall Time (10% - 90%) TR TF Minimum Pulse Width Driver Output Comparator Output Maximum Operating Frequency Note 1: Note 2: Note 3: Note 4: Fmax 3.0 3.5 4.0 4.5 5.0 ns ns ns ns ns 2 2 ns ns 20 10 ns ns 50 MHz Into 18 inches of 50Ω transmission line terminated with 1KΩ and 5 pF with the proper series termination resistor. Measured at 2.5V with a 10 mA load under the following conditions: VHIGH = +5.0V, VLOW = 0V, VCC = +8V, VEE = -3V, and VDD = +5V. Measured at 2.5V with a 4 mA load. Load = 10 mA and measured when a 500 mV change at the output is detected. T1 T2 DATA IN DUT DATA OUT DVR EN* HiZ DUT T3 2000 Semtech Corp. T4 13 www.semtech.com Edge649 EDGE HIGH-PERFORMANCE PRODUCTS Ordering Information Model Number Package E649B P J 68-P in P LC C EV M 649EV M Edg e649 Ev aluat ion M odule Contact Information Semtech Corporation Edge High-Performance Division 10021 Willow Creek Rd., San Diego, CA 92131 Phone: (858)695-1808 FAX (858)695-2633 2000 Semtech Corp. 14 www.semtech.com