DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/ DS26LS33M/DS26LS33AC Quad Differential Line Receivers General Description Features The DS26LS32 and DS26LS32A are quad differential line receivers designed to meet the RS-422, RS-423 and Federal Standards 1020 and 1030 for balanced and unbalanced digital data transmission. The DS26LS32 and DS26LS32A have an input sensitivity of 200 mV over the input voltage range of g 7V and the DS26LS33 and DS26LS33A have an input sensitivity of 500 mV over the input voltage range of g 15V. Both the DS26LS32A and DS26LS33A differ in function from the popular DS26LS32 and DS26LS33 in that input pull-up and pull-down resistors are included which prevent output oscillation on unused channels. Each version provides an enable and disable function common to all four receivers and features TRI-STATEÉ outputs with 8 mA sink capability. Constructed using low power Schottky processing, these devices are available over the full military and commerical operating temperature ranges. Y Y Y Y Y Y Y High differential or common-mode input voltage ranges of g 7V on the DS26LS32 and DS26LS32A and g 15V on the DS26LS33 and DS26LS33A g 0.2V sensitivity over the input voltage range on the DS26LS32 and DS26LS32A, g 0.5V sensitivity on the DS26LS33 and DS26LS33A DS26LS32 and DS26LS32A meet all requirements of RS-422 and RS-423 6k minimum input impedance 100 mV input hysteresis on the DS26LS32 and DS26LS32A, 200 mV on the DS26LS33 and DS26LS33A Operation from a single 5V supply TRI-STATE outputs, with choice of complementary output enables for receiving directly onto a data bus Logic Diagram TL/F/5255 – 1 Connection Diagram Truth Table Dual-In-Line Package ENABLE ENABLE Input Output 0 1 X Hi-Z VID t VTH (Max) 1 VID s VTH (Min) 0 See Note Below HI-Z e TRI-STATE Note: Input conditions may be any combination not defined for ENABLE and ENABLE. TL/F/5255 – 2 Top View Order Number DS26LS32CM, DS26LS32CN, DS26LS32MJ, DS26LS32ACM, DS26LS32ACN, DS26LS33CN, DS26LS33MJ or DS26LS33ACN See NS Package Number J16A, M16A or N16A For Complete Military 883 Specifications, See RETS Data Sheet. Order Number DS26LS32MJ/883, DS26LS32MW/883, DS26LS33MJ/883, DS26LS33MW/883 See NS Package Number J16A or W16A TRI-STATEÉ is a registered trademark of National Semiconductor Corporation. C1996 National Semiconductor Corporation TL/F/5255 RRD-B30M36/Printed in U. S. A. http://www.national.com DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/DS26LS33M/DS26LS33AC Quad Differential Line Receivers January 1996 Absolute Maximum Ratings (Note 1) Storage Temperature Range If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage Common-Mode Range b 65§ C to a 165§ C Lead Temperature (Soldering, 4 seconds) Operating Conditions 7V g 25V Differential Input Voltage Enable Voltage Output Sink Current Maximum Power Dissipation* at 25§ C Cavity Package Molded Dip Package SO Package DS26LS32 DS26LS32A 260§ C Supply Voltage, (VCC) DS26LS32M, DS26LS33M (MIL) DS26LS32C, DS26LS33C DS26LS32AC, DS26LS33AC (COML) Temperature, (TA) DS26LS32M, DS26LS33M (MIL) DS26LS32C, DS26LS33C DS26LS32AC, DS26LS33AC (COML) g 25V 7V 50 mA 1433 mW 1362 mW 1002 mW 1051 mW *Derate cavity package 9.6 mW/§ C above 25§ C; derate molded DIP package 10.9 mW/§ C above 25§ C. Derate SO Package 8.01 mW/§ C for DS26LS32 8.41 mW/§ C for DS26LS32A Min Max Units 4.5 5.5 V 4.75 5.25 V b 55 a 125 §C 0 a 70 §C Electrical Characteristics over the operating temperature range unless otherwise specified (Notes 2, 3 and 4) Symbol VTH Parameter Min Typ Max Units DS26LS32, DS26LS32A, b7V s VCM s a 7V Conditions b 0.2 g 0.07 0.2 V DS26LS33, DS26LS33A, b15V s VCM a 15V b 0.5 g 0.14 0.5 6.0 8.5 Differential Input Voltage VOUT e VOH or VOL RIN Input Resistance b 15V s VCM s a 15V (One Input AC GND) IIN Input Current (Under Test) VIN e 15V, Other Input b15V s VIN s a 15V VOH VOL Output High Voltage Output Low Voltage VIN e b15V, Other Input b15V s VIN s a 15V VCC e MIN, DVIN e 1V, VENABLE e 0.8V, IOH e b440 mA VCC e Min, DVIN e b1V, VENABLE e 0.8V VIL Enable Low Voltage VIH Enable High Voltage VI Enable Clamp Voltage VCC e Min, IIN e b18 mA IO OFF-State (High Impedance) Output Current VCC e Max IIL Enable Low Current IIH Enable High Current ISC Output Short-Circuit Current VO e 0V, VCC e Max, DVIN e 1V ICC Power Supply Current VCC e Max, All VIN e GND, Outputs Disabled II Input High Current VIN e 5.5V VHYST Input Hysteresis TA e 25§ C, VCC e 5V, VCM e 0V V kX 2.3 mA b 2.8 mA Commercial 2.7 4.2 V Military 2.5 4.2 V IOL e 4 mA 0.4 V IOL e 8 mA 0.45 V 0.8 V 2.0 V b 1.5 V VO e 2.4V 20 mA VO e 0.4V b 20 mA VIN e 0.4V b 0.36 mA VIN e 2.7V 20 mA b 85 mA b 15 DS26LS32, DS26LS32A 52 70 mA DS26LS33, DS26LS33A 57 80 mA 100 mA DS26LS32, DS26S32A 100 mV DS26LS33, DS26LS33A 200 mV 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 device 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, all currents out of device pins are shown as negative, all voltages are referenced to ground, unless otherwise specified. All values shown as max or min are so classified on absolute value basis. Note 3: All typical values are VCC e 5V, TA e 25§ C. Note 4: Only one output at a time should be shorted. http://www.national.com 2 Switching Characteristics VCC e 5V, TA e 25§ C Symbol Parameter DS26LS32/DS26LS33 Conditions Min Typ Max DS26LS32A/DS26LS33A Min Typ Max Units tPLH tPHL Input to Output CL e 15 pF 17 17 25 25 23 23 35 35 ns ns tLZ tHZ ENABLE to Output CL e 5 pF 20 15 30 22 15 20 30 25 ns ns tZL tZH ENABLE to Output CL e 15 pF 15 15 22 22 14 15 22 22 ns ns AC Test Circuit and Switching Time Waveforms Load Test Circuit for TRI-STATE Outputs TL/F/5255 – 3 Propagation Delay (Notes 1 and 3) Enable and Disable Times (Notes 2 and 3) TL/F/5255 – 4 Note 1: Diagram shown for ENABLE low. Note 2: S1 and S2 of load circuit are closed except where shown. Note 3: Pulse generator for all pulses: Rate e 1.0 MHz; ZO e 50X; tr s 6 ns; tf s 6.0 ns. TL/F/5255 – 5 Typical Applications Two-Wire Balanced InterfaceÐRS-422 TL/F/5255 – 6 Single Wire with Driver Ground ReferenceÐRS-423 TL/F/5255 – 7 3 http://www.national.com Physical Dimensions inches (millimeters) Ceramic Dual-In-Line Package (J) Order Number DS26LS32MJ, DS26LS33MJ, DS26LS32MJ/883 or DS26LS33MJ/883 NS Package Number J16A Small Outline Package (M) Order Number DS26LS32CM or DS26LS32ACM NS Package Number M16A http://www.national.com 4 Physical Dimensions inches (millimeters) (Continued) Molded Dual-In-Line Package (N) Order Number DS26LS32CN, DS26LS32ACN, DS26LS33CN or DS26LS33ACN NS Package Number N16A 5 http://www.national.com DS26LS32C/DS26LS32M/DS26LS32AC/DS26LS33C/DS26LS33M/DS26LS33AC Quad Differential Line Receivers Physical Dimensions inches (millimeters) (Continued) 16 Lead Ceramic Flatpak (W) Order Number DS26LS32MW/883 or DS26LS33MW/883 NS Package Number W16A 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. 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