DS7830/DS8830 Dual Differential Line Driver General Description Features The DS7830/DS8830 is a dual differential line driver that also performs the dual four-input NAND or dual four-input AND function. n Single 5V power supply n Diode protected outputs for termination of positive and negative voltage transients n Diode protected inputs to prevent line ringing n High speed n Short circuit protection TTL (Transistor-Transistor-Logic) multiple emitter inputs allow this line driver to interface with standard TTL systems. The differential outputs are balanced and are designed to drive long lengths of coaxial cable, strip line, or twisted pair transmission lines with characteristic impedances of 50Ω to 500Ω. The differential feature of the output eliminates troublesome ground-loop errors normally associated with single-wire transmissions. Connection Diagram Dual-In-Line and Flat Package DS005799-2 Top View Order Number DS8830N See NS Package Number N14A For Complete Military 883 Specificatons, See RETS Data Sheet. Order Number DS7830J/883 or DS7830W/883 See NS Package Number J14A © 1999 National Semiconductor Corporation DS005799 www.national.com DS7830/DS8830 Dual Differential Line Driver March 1992 Absolute Maximum Ratings (Note 2) Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VCC Input Voltage Storage Temperature Lead Temperature (Soldering, 4 sec.) Output Short Circuit Duration (125˚C) Maximum Power Dissipation (Note 1) at 25˚C Cavity Package Molded Package Supply Voltage (VCC) DS8730 DS8830 Temperature (TA) DS7830 DS8830 7.0V 5.5V −65˚C to +150˚C 260˚C 1 second Min Max Units 4.5 4.75 5.5 5.25 V V +125 +70 ˚C ˚C −55 0 Note 1: Derate cavity package 8.7 mW/˚C above 25˚C; derate molded package 9.7 mW/˚C above 25˚C. 1308 mW 1207 mW Electrical Characteristics (Notes 3, 4) Symbol Parameter Conditions Min Typ Max Units VIH Logical “1” Input Voltage VIL Logical “0” Input Voltage VOH Logical “1” Output Voltage VIN = 0.8V IOUT = −0.8 mA IOUT = 40 mA VOL Logical “0” Output Voltage VIN = 2.0V IOUT = 32 mA IOUT = 40 mA 0.5 V IIH Logical “1” Input Current VIN = 2.4V VIN = 5.5V 120 µA 2 mA IIL Logical “0” Input Current −4.8 mA −100 −120 mA 11 18 mA −1.0 −1.5 V 2.0 V 0.8 ISC Output Short Circuit Current ICC Supply Current VIN = 0.4V VCC = 5.0V, TA = 125˚C, (Note 5) VIN = 5.0V, (Each Driver) VI Input Clamp VCC = Min, IIN = − 12 mA 2.4 V V 1.8 3.3 V 0.2 0.4 0.22 −40 V Switching Characteristics TA = 25˚C, VCC = 5V, unless otherwise noted Symbol tpd1 Propagation Delay AND Gate Parameter Conditions RL = 400Ω, CL = 15 pF Propagation Delay NAND Gate tpd0 tpd1 tpd0 t1 Differential Delay Min Typ Max 8 12 Units ns (Figure 1 ) RL = 400Ω, CL = 15 pF 11 18 ns 8 12 ns (Figure 1 ) 5 8 ns Load, 100Ω and 5000 pF, 12 16 ns 12 16 ns (Figure 2 ) t2 Differential Delay Load, 100Ω and 5000 pF, (Figure 2 ) Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating Temperature Range” they are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation. Note 3: Unless otherwise specified min/max limits apply across the −55˚C to +125˚C temperature range for the DS7830 and across the 0˚C to +70˚C range for the DS8830. Typical values for TA = 25˚C and VCC = 5.0V. Note 4: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown as max or min on absolute value basis. Note 5: Only one output at a time should be shorted. www.national.com 2 AC Test Circuit and Switching Time Waveforms DS005799-4 DS005799-9 f = 1 MHz tr = tf ≤ 10 ns (10% to 90%) Duty cycle = 50% FIGURE 1. DS005799-8 DS005799-10 FIGURE 2. Typical Performance Characteristics Output High Voltage (Logical “1”) vs Ouput Current Differential Delay vs Temperature Threshold Voltage vs Temperature DS005799-11 DS005799-12 DS005799-7 3 www.national.com Typical Performance Characteristics Differential Output Voltage (|VAND - VNAND| ) vs Differential Output Current (Continued) Power Dissipation (No Load) vs Data Input Frequency Output Low Voltage (Logical “0“) vs Output Current DS005799-14 DS005799-13 DS005799-15 Typical Application Digital Data Transmission DS005799-3 †Exact value depends on line length. *Optional to control response time. www.national.com 4 Schematic Diagram DS005799-1 *2 Per Package 5 www.national.com Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number DS7830J or DS8830J NS Package Number J14A Molded Dual-In-Line Package (N) Order Number DS8830N NS Package Number N14A www.national.com 6 DS7830/DS8830 Dual Differential Line Driver Notes 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. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: [email protected] www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: [email protected] Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 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. 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