DS36950 DS36950 Quad Differential Bus Transceiver Literature Number: SNLS075B DS36950 Quad Differential Bus Transceiver General Description The DS36950 is a low power, space-saving quad EIA-485 differential bus transceiver especially suited for high speed, parallel, multipoint, computer I/O bus applications. A compact 20-pin surface mount PLCC package provides high transceiver integration and a very small PC board footprint. Timing uncertainty across an interface using multiple devices, a typical problem in a parallel interface, is specified -- minimum and maximum propagation delay times are guaranteed. connection to a parallel databus. The fourth transceiver, with the flexibility provided by its individual enables, can serve as a control bus transceiver. Features n n n n n Pinout for IPI interface Compact 20-pin PLCC package Meets EIA-485 standard for multipoint bus transmission Greater than 60 mA source/sink Thermal Shutdown Protection Six devices can implement a complete IPI master or slave interface. Three transceivers in a package are pinned out for Pinout and Logic Diagram 01060201 Order Number DS36950 See NS Package Number V20A 01060202 TRI-STATE (R) is a registered trademark of National Semiconductor Corporation. (c) 2004 National Semiconductor Corporation DS010602 www.national.com DS36950 Quad Differential Bus Transceiver July 1998 DS36950 Absolute Maximum Ratings (Note 1) Derate V Package 13.9 mW/C above 25C Storage Temp. Range If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 7V Control Input Voltage VCC + 0.5V Driver Input Voltage VCC + 0.5V 260C Recommended Operating Conditions Supply Voltage, VCC Driver Output Voltage/Receiver Input Voltage -65C to +150C Lead Temp. (Soldering 4 Sec.) -10V to +15V Receiver Output Voltage 5.5V Continuous Power Dissipation @ 25C V Package 4.75V to 5.25V Bus Voltage -7V to +12V Operating Free Air Temp. (TA) 0C to +70C 1.73W Electrical Characteristics (Note 2) Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter Conditions Min Typ Max Units 1.5 1.9 V DRIVER CHARACTERISTICS VODL VOD IVODI VOC IVOCI Differential Driver Output IL = 60 mA Voltage (Full Load) VCM = 0V Differential Driver Output RL = 100 (EIA-422) 2.0 3.5 V Voltage (Termination Load) RL = 54 (EIA-485) 1.5 3.2 V Change in Magnitude of Driver RL = 54 or 100 Differential Output Voltage for (Note 4) (Figure 1) Complementary Output States (EIA-485) Driver Common Mode Output RL = 54 Voltage (Note 5) (Figure 1) (EIA-485) Change in Magnitude of Common (Note 4) (Figure 1) Mode Output Voltage (EIA-485) VOH Output Voltage HIGH IOH = -55 mA VOL Output Voltage LOW IOL = 55 mA VIH Input Voltage HIGH 2.7 0.2 V 3.0 V 0.2 V 3.2 1.4 V 1.7 2.0 V V VIL Input Voltage LOW VCL Input Clamp Voltage I = -18 mA IIH Input High Current VI = 2.4V (Note 3) IIL Input Low Current VI = 0.4V (Note 3) -20 A IOSC Driver Short-Circuit VO = -7V (EIA-485) -130 -250 mA Output Current VO = 0V (EIA-422) -90 -150 mA (Note 9) VO = +12V (EIA-485) 130 250 mA -28 -75 mA 20 A 0.8 V -1.5 V 20 A RECEIVER CHARACTERISTICS IOSR Short Circuit Output Current VO = 0V (Note 9) IOZ TRI-STATE (R) Output Current VO = 0.4V to 2.4V -15 VOH Output Voltage High VID = 0.20V, IOH = -0.4 mA VOL Output Voltage Low VID = -0.20V, IOL = 4 mA 0.35 0.5 V VTH Differential Input High VO = VOH, IO = -0.4 mA 0.03 0.20 V Threshold Voltage (EIA-422/485) VTL VHST Differential Input Low VO = VOL, IO = 4.0 mA Threshold Voltage (Note 6) (EIA-422/485) Hysteresis (Note 7) VCM = 0V 2.4 3.0 V -0.20 -0.03 V 35 60 mV DRIVER AND RECEIVER CHARACTERISTICS VIH Enable Input Voltage High VIL Enable Input Voltage Low www.national.com 2.0 V 0.8 2 V (Continued) Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter Conditions Min Typ Max Units DRIVER AND RECEIVER CHARACTERISTICS VCL Enable Input Clamp Voltage I = -18 mA IIN Line Input Current Other Input = 0V (Note 8) IIH Enable Input Current High IIL VOH = 2.4V Enable Input Current Low VOL = 0.4V -1.5 V VI = +12V 0.5 1 mA VI = -7V -0.45 -0.8 mA RE4 or DE 20 A REC 60 A RE4 or DE -20 A REC -60 A ICC Supply Current (Note 10) No Load, Outputs Enabled 75 90 mA ICCZ Supply Current (Note 10) No Load, Outputs Disabled 50 70 mA Switching Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Conditions Min Typ Max Units DRIVER SINGLE-ENDED CHARACTERISTICS tPZH RL = 110 (Figure 4) 35 40 ns tPZL RL = 110 (Figure 5) 25 40 ns tPHZ RL = 110 (Figure 4) 15 25 ns tPLZ RL = 110 (Figure 5) 35 40 ns DRIVER DIFFERENTIAL CHARACTERISTICS t R , tF Rise & Fall Time RL = 54 13 16 ns tPLHD Differential Propagation CL = 50 pF 9 15 19 ns tPHLD Delays (Note 15) CD = 15 pF 9 15 19 ns tSKD |tPLHD - tPHLD| Differential Skew (Figures 3, 8) 3 6 ns RECEIVER CHARACTERISTICS tPLHD Differential Propagation Delays 9 14 19 ns tPHLD CL = 15 pF, VCM = 1.5V (Figure 6) 9 14 19 ns tSKD |tPLHD - tPHLD| Differential Receiver Skew 1 3 ns tZH Output Enable Time to High Level 15 22 ns tZL Output Enable Time to Low Level CL = 15 pF 20 30 ns tHZ Output Disable Time from High Level (Figure 7) tLZ Output Disable Time from Low Level 10 17 ns 17 25 ns Note 1: "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The tables of "Electrical Characteristics" specify conditions for device operation. Note 2: Current into device pins is define as positive. Current out of device pins is defined as negative. All voltages are referenced to ground unless otherwise specified. Note 3: IIH and IIL includes driver input current and receiver TRI-STATE leakage current. Note 4: IVODI and IVOCI are changes in magnitude of VOD and VOC, respectively, that occur when the input changes state. Note 5: In EIA Standards EIA-422 and EIA-485, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage, VOS. Note 6: Threshold parameter limits specified as an algebraic value rather than by magnitude. Note 7: Hysteresis defined as VHST = VTH - VTL. Note 8: IIN includes the receiver input current and driver TRI-STATE leakage current. Note 9: Short one output at a time. Note 10: Total package supply current. Note 11: All typicals are given for VCC = 5.0V and TA = 25C. 3 www.national.com DS36950 Electrical Characteristics (Note 2) DS36950 Parameter Measurement Information 01060203 FIGURE 1. Driver VOD and VOC 01060204 FIGURE 2. Receiver VOH and VOL 01060205 01060206 FIGURE 3. Driver Differential Propagation Delay and Transition Timing www.national.com 4 DS36950 Parameter Measurement Information (Continued) 01060209 S1 to OA for DI = 3V S1 to OB for DI = 0V 01060210 FIGURE 4. Driver Enable and Disable Timing (tPZH, tPHZ) 01060211 S1 to OA for DI = 0V S1 to OB for DI = 3V 01060212 FIGURE 5. Driver Enable and Disable Timing (tPZL, tPLZ) 5 www.national.com DS36950 Parameter Measurement Information (Continued) 01060213 01060214 FIGURE 6. Receiver Differential Propagation Delay Timing www.national.com 6 DS36950 Parameter Measurement Information (Continued) 01060215 01060216 S1 1.5V S2 OPEN S3 CLOSED 01060217 S1 -1.5V S2 CLOSED S3 OPEN 01060218 S1 1.5V S2 CLOSED S3 CLOSED 01060219 S1 -1.5V S2 CLOSED S3 CLOSED FIGURE 7. Receiver Enable and Disable Timing 7 www.national.com DS36950 Parameter Measurement Information (Continued) 01060220 TCP = Crossing Point Tra, Trb, Tfa, and Tfb are propagation delay measurements to the 20% and 80% levels. FIGURE 8. Propagation Delay Timing for Calculation of Driver Differential Propagation Delays Note 12: The input pulse is supplied by a generator having the following characteristics: f = 1.0 MHz, 50% Duty Cycle, tf and tr < 6.0 ns, ZO = 50 Note 13: CL includes probe and stray capacitance. Note 14: Diodes are 1N916 or equivalent. Note 15: Differential propagation delays are calculated from single-ended propagation delays measured from driver input to the 20% and 80% levels on the driver outputs (See Figure 8). Typical Performance Characteristics Driver Differential Propagation Delay vs Temperature Driver Differential Propagation Delay vs VCC 01060223 www.national.com 01060224 8 DS36950 Typical Performance Characteristics (Continued) Driver Transition Time vs Temperature Driver Transition Time vs VCC 01060225 01060227 Driver VOH vs IOH vs VCC Driver VOH vs IOH vs Temperature 01060226 01060228 Driver VOL vs IOL vs VCC Driver VOL vs IOL vs Temperature 01060229 01060230 9 www.national.com DS36950 Typical Performance Characteristics (Continued) Driver VOD vs IO vs Temperature Driver VOD vs IO vs VCC 01060231 01060232 Receiver Differential Propagation Delay vs Temperature Receiver Differential Propagation Delay vs VCC 01060233 01060234 Receiver VOH vs IOH vs VCC Receiver VOH vs IOH vs Temperature 01060235 www.national.com 01060236 10 DS36950 Typical Performance Characteristics (Continued) Receiver VOL vs IOL vs Temperature Receiver VOL vs IOL vs VCC 01060237 01060238 Supply Current vs Temperature Power Supply Current vs Power Supply Voltage 01060239 01060240 Driver ICC vs Switching Frequency 01060241 11 www.national.com DS36950 Quad Differential Bus Transceiver Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS36950 NS Package Number V20A National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ``Banned Substances'' as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 www.national.com National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 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. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in such safety-critical applications. TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are specifically designated by TI as military-grade or "enhanced plastic." Only products designated by TI as military-grade meet military specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Applications Audio www.ti.com/audio Communications and Telecom www.ti.com/communications Amplifiers amplifier.ti.com Computers and Peripherals www.ti.com/computers Data Converters dataconverter.ti.com Consumer Electronics www.ti.com/consumer-apps DLP(R) Products www.dlp.com Energy and Lighting www.ti.com/energy DSP dsp.ti.com Industrial www.ti.com/industrial Clocks and Timers www.ti.com/clocks Medical www.ti.com/medical Interface interface.ti.com Security www.ti.com/security Logic logic.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense Power Mgmt power.ti.com Transportation and Automotive www.ti.com/automotive Microcontrollers microcontroller.ti.com Video and Imaging RFID www.ti-rfid.com OMAP Mobile Processors www.ti.com/omap Wireless Connectivity www.ti.com/wirelessconnectivity TI E2E Community Home Page www.ti.com/video e2e.ti.com Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright (c) 2011, Texas Instruments Incorporated