DS75124 Triple Line Receiver General Description Features The DS75124 is designed to meet the input/output interface specifications for IBM System 360. It has built-in hysteresis on one input on each of the three receivers to provide large noise margin. The other inputs on each receiver are in a standard TTL configuration. The DS75124 is compatible with standard TTL logic and supply voltage levels. Y Y Y Y Y Y Built-in input threshold hysteresis High speed . . . typical propagation delay time 20 ns Independent channel strobes Input gating increases application flexibility Single 5.0V supply operation Plug-in replacement for the SN75124 and the 8T24 Connection Diagram and Truth Table Dual-In-Line Package Inputs Output A B² R S Y H X L L X X H X X X L L X L H X H X X H X L X L L L H H H H H e high level, L e low level, X e irrelevant ² B input and last two lines of the truth table are applicable to receivers 1 and 2 only TL/F/5792 – 1 Top View Order Number DS75124N See NS Package Number N16A Typical Application TL/F/5792 – 2 C1996 National Semiconductor Corporation TL/F/5792 RRD-B30M36/Printed in U. S. A. http://www.national.com DS75124 Triple Line Receiver February 1996 Absolute Maximum Ratings (Note 1) Supply Voltage, VCC b 65§ C to a 150§ C Lead Temperature (Soldering, 4 seconds) 7.0V Input Voltage R Input with VCC Applied R Input with VCC not Applied A, B, or S Input Output Voltage Output Current Maximum Power Dissipation* at 25§ C Molded Package 0§ C to a 75§ C Operating Temperature Range Storage Temperature Range If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. 260§ C *Derate molded package 10.9 mW/§ C above 25§ C. Operating Conditions 7.0V 6.0V 5.5V 7.0V g 100 mA Min 4.75 Supply Voltage, VCC High Level Output Current, IOH Low Level Output Current, IOL Operating Temperature, TA 1362 mW 0 Max 5.25 b 800 Units V mA 16 mA a 75 §C Electrical Characteristics (Notes 2 and 3) Symbol Parameter VIH High Level Input Voltage VIL Low Level Input Voltage VT a bVTb Conditions Min A, B, or S 2.0 R 1.7 Typ Max Units V V A, B, or S 0.8 V R 0.8 V Hysteresis VCC e 5.0V, TA e 25§ C, R, (Note 6) VI Input Clamp Voltage VCC e 5.0V, II e b12 mA, A, B, or S b 1.5 V II Input Current at Maximum Input Voltage VCC e 5.25V, VIN e 5.5V, A, B, or S 1 mA R 0.2 0.4 V VI e 7.0V 5.0 mA VI e 6.0V, VCC e 0V 5.0 mA VOH High Level Output Voltage VIH e VIHMIN, VIL e VILMAX, IOH e b800 mA, (Note 4) VOL Low Level Output Voltage VIH e VIHMIN, VIL e VILMAX, IOL e 16 mA, (Note 4) IIH High Level Input Current 2.6 V 0.4 V VI e 4.5V, A, B, or S 40 mA VI e 3.11V, R 170 mA IIL Low Level Input Current VI e 0.4V, A, B, or S b 0.1 b 1.6 mA IOS Short Circuit Output Current VCC e 5.0V, TA e 25§ C, (Note 5) b 50 b 100 mA Supply Current VCC e 5.25V 72 mA Typ Max Units ICC Switching Characteristics Symbol TA e 25§ C, nominal power supplies unless otherwise noted Parameter Conditions Min tPLH Propagation Delay Time, Low-to-High Level Output from R Input (See AC Test Circuit and Switching Time Waveforms) 20 30 ns tPHL Propagation Delay Time, High-to-Low Level Output from R Input (See AC Test Circuit and Switching Time Waveforms) 20 30 ns Note 1: ‘‘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 2: All currents into device pins are shown as positive, currents out of device pins shown as negative, all voltage values are referenced with respect to network ground terminal, unless otherwise noted. All values shown as max or min on absolute value basis. Note 3: Min/max limits apply across the guaranteed operating temperature range of 0§ C to a 75§ C for DS75124, unless otherwise specified. Typicals are for VCC e 5.0V, TA e 25§ C. Positive current is defined as current into the referenced pin. Note 4: The output voltage and current limits are guaranteed for any appropriate combination of high and low inputs specified by the truth table for the desired output. Note 5: Not more than one output should be shorted at a time. Note 6: Hysteresis is the difference between the positive going input threshold voltage, VT a , and the negative going input threshold voltage, VTb. http://www.national.com 2 AC Test Circuit and Switching Time Waveforms TL/F/5792 – 3 Note 1: The pulse generator has the following characteristics: ZOUT & 50X, tW e 200 ns, duty cycle e 50% Note 2: CL includes probe and jig capacitance. TL/F/5792 – 4 Typical Performance Characteristics Output Voltage vs Receiver Input Voltage TL/F/5792 – 5 3 http://www.national.com DS75124 Triple Line Receiver Physical Dimensions inches (millimeters) Molded Dual-In-Line Package (N) Order Number DS75124N NS Package Number N16A 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 OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. 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