DS75160A NSC | Alldatasheet

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n 8-channel bi-directional non-inverting transceivers n Bi-directional control implemented with TRI-STATE® output design n Meets IEEE Standard 488-1978 n High-speed Schottky design n Low power consumption n High impedance PNP inputs (drivers) n 500 mV (typ) input hysteresis (receivers) n On-chip bus terminators n No bus loading when VCC is removed n Pin selectable open collector mode on DS75160A driver outputs n Accommodates multi-controller systems Connection Diagrams TRI-STATE® is a registered trademark of National Semiconductor Corporation. Dual-In-Line Package DS005804-1 Top View Order Number DS75160AN or DS75160AWM See NS Package Number M20B or N20A Dual-In-Line Package DS005804-16 Order Number DS75161AN or DS75161AWM See NS Package Number M20B or N20B May 1999 DS75160A/DS75161A IEEE-488 GPIB Transceivers © 1999 National Semiconductor Corporation DS005804 www.national.com

Absolute Maximum Ratings(Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, V CC 7.0V Input Voltage 5.5V Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 4 sec.) 260˚C Maximum Power Dissipation (Note 1) at 25˚C Molded Package 1897 mW Min Max Units V CC , Supply Voltage 4.75 5.25 V TA, Ambient Temperature 0 70 ˚C IOL , Output Low Current Bus 48 mA Terminal 16 mA Note 1:Derate molded package 15.2 mW/˚C above 25˚C. Electrical Characteristics(Notes 3, 4) Symbol Parameter Conditions Min Typ Max Units VIH High-Level Input Voltage 2 V VIL Low-Level Input Voltage 0.8 V VIK Input Clamp Voltage I I = −18 mA −0.8 −1.5 V VHYS Input Hysteresis Bus 400 500 mV VOH High-Level Terminal I OH = −800 µA 2.7 3.5 V Output Voltage Bus (Note 4) I OH = −5.2 mA 2.5 3.4 VOL Low-Level Terminal I OL = 16 mA 0.3 0.5 V Output Voltage Bus I OH = 48 mA 0.4 0.5 IIH High-Level Terminal and V I = 5.5V 0.2 100 µA Input Current TE, PE, DC, V I = 2.7V 0.1 20 IIL Low-Level SC Inputs V I = 0.5V −10 −100 µA Input Current VBIAS Terminator Bias Driver I I(bus)= 0 (No Load) 2.5 3.0 3.7 V Voltage at Bus Port Disabled ILOAD Terminator V I(bus)= −1.5V to 0.4V −1.3 Bus Loading V I(bus)= 0.4V to 2.5V 0 −3.2 Current Bus Driver V I(bus)= 2.5V to 3.7V 2.5 mA Disabled −3.2 VI(bus)= 3.7V to 5V 0 2.5 VI(bus)= 5V to 5.5V 0.7 2.5 VCC = 0V, VI(bus)= 0V to 2.5V 40 µA IOS Short-Circuit Terminal V I = 2V, VO = 0V (Note 5) −15 −35 −75 mA Output Current Bus (Note 6) −35 −75 −150 ICC Supply Current DS75160A Transmit, TE = 2V, PE = 2V, VI = 0.8V 85 125 Receive, TE= 0.8V, PE= 2V, VI = 0.8V 70 100 mA DS75161A TE = 0.8V, DC= 0.8V, VI = 0.8V 84 125 C IN Bus-Port Bus V CC = 5V or 0V, VI = 0V to 2V, 20 30 pF Capacitance f = 1 MHz Note 2:“Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device 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 0˚C to +70˚C temperature range and the 4.75V to 5.25V power supply range. All typical values are for TA = 25˚C and VCC = 5.0V. Note 4:All currents into device pins are shown as positive; all currents out of device pins are shown as negative; all voltages are referenced to ground, unless oth- erwise specified. All values shown as max or min are so classified on absolute value basis. Note 5:Only one output at a time should be shorted. Note 6:This characteristic does not apply to outputs on DS75161A that are open collector. www.national.com 2

Functional Description(Continued) Table of Signal Line Abbreviations Signal Line Mne- Classi- monic Definition Device fication DC Direction Control DS75161A Control PE Pull-Up Enable DS75160A Signals TE Talk Enable All SC System Controller Data B1–B8 Bus Side of Device I/O Ports D1–D8 Terminal Side DS75160A of Device ATN Attention DAV Data Valid EOI End or Identify Management IFC Interface Clear DS75161A Signals NDAC Not Data Accepted NRFD Not Ready for Data REN Remote Enable SRQ Service Request Logic Diagrams DS75160A DS005804-4 www.national.com5

Logic Diagrams(Continued) Switching Waveforms DS75161A DS005804-5 DS005804-7 Transmit Propagation Delays DS005804-10 www.national.com 6

Switching Waveforms (Continued) Performance Characteristics Receive Propagation Delays DS005804-11 Terminal Enable/Disable Times DS005804-12 Bus Enable/Disable Times DS005804-13 *Input signal: f= 1.0 MHz, 50% duty cycle, tr = tf≤ 5n s Bus Port Load Characteristics DS005804-14 Refer to Electrical Characteristics table www.national.com7

Control Input Data Transceivers Level TE PE Direction Bus Port Configuration H H T Totem-Pole Output H L T Open Collector Output L X R Input DS75161A Control Input Level Transceiver Signal Direction TE DC ATN * EOI REN IFC SRQ NRFD NDAC DAV HH R RRTRRT HL T TTRRRT L HRR R T T T R LL T TTRTTR HXH T LXH R XHL R XLL T H = High level input L = Low level input X = Don’t care T = Transmit, i.e., signal outputted to bus R = Receive, i.e., signal outputted to terminal *The ATN signal level is sensed for internal multiplex control of EOI transmission direction logic. www.national.com 8

Physical Dimensionsinches (millimeters) unless otherwise noted Order Number DS75160AWM www.national.com9

Physical Dimensionsinches (millimeters) unless otherwise noted (Continued) 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. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com 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 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com Molded Dual-In-Line Package (N) Order Number DS75160AN or DS75161AN DS75160A/DS75161A IEEE-488 GPIB Transceivers 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.