DS26LS32AC/DS26LS32C/DS26LS32M/DS26LS33M 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 ± 7V and the DS26LS33 have an input sensitivity of 500 mV over the input voltage range of ± 15V. The DS26LS32A 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-STATE ® 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. n High differential or common-mode input voltage ranges of ± 7V on the DS26LS32 and DS26LS32A and ± 15V on the DS26LS33 n ± 0.2V sensitivity over the input voltage range on the DS26LS32 and DS26LS32A, ± 0.5V sensitivity on the DS26LS33 n DS26LS32 and DS26LS32A meet all requirements of RS-422 and RS-423 n 6k minimum input impedance n 100 mV input hysteresis on the DS26LS32 and DS26LS32A, 200 mV on the DS26LS33 n Operation from a single 5V supply n TRI-STATE outputs, with choice of complementary output enables for receiving directly onto a data bus Logic Diagram DS005255-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS005255 www.national.com DS26LS32AC/DS26LS32C/DS26LS32M/DS26LS33MQuad Differential Line Receivers May 1999 Connection Diagram Dual-In-Line Package DS005255-2 Top View Order Number DS26LS32CM, DS26LS32CN, DS26LS32ACM, DS26LS32ACN, DS26LS33ACM or DS26LS33ACN See NS Package Number M16A or N16E For Complete Military Product Specifications, refer to the appropriate SMD or MDS. Order Number DS26LS32MJ/883, DS26LS32MW/883, DS26LS32ME/883, DS26LS33MW/883 See NS Package Number E20A, J16A or W16A 20-Lead Ceramic Leadless Chip Carrier DS005255-12 Truth Table ENABLE ENABLE Input Output 0 1 X Hi-Z See VID ≥ VTH (Max) 1 Note Below VID ≤ VTH (Min) 0 Hi-Z = TRI-STATE ® Note: Input conditions may be any combination not defined for ENABLE and ENABLE . www.national.com 2 Absolute Maximum Ratings (Note 3) Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Common-Mode Range Differential Input Voltage Enable Voltage Output Sink Current Maximum Power Dissipation (Note 1) at 25˚C Cavity Package Molded Dip Package SO Package DS26LS32 DS26LS32A Storage Temperature Range Supply Voltage, (VCC) DS26LS32M, DS26LS33M (MIL) DS26LS32C DS26LS32AC (COML) Temperature, (TA) DS26LS32M, DS26LS33M (MIL) DS26LS32C DS26LS32AC (COML) 7V ± 25V ± 25V 7V 50 mA 1433 mW 1362 mW 1002 mW 1051 mW −65˚C to +165˚C 260˚C Lead Temperature (Soldering, 4 seconds) Min Max Units 4.5 5.5 V 4.75 5.25 V −55 +125 ˚C 0 +70 ˚C Note 1: Derate cavity package 9.6 mW/˚C above 25˚C; derate molded DIP package 10.9 mW/˚C above 25˚C. Note 2: Derate SO Package 8.01 mW/˚C for DS26LS32 8.41 mW/˚C for DS26LS32A Electrical Characteristics (Notes 4, 5, 6) over the operating temperature range unless otherwise specified Symbol VTH RIN IIN Min Typ Max Units Differential Input Parameter VOUT = VOH DS26LS32, DS26LS32A, −7V ≤ VCM ≤ +7V −0.2 0.2 V Voltage or VOL DS26LS33, DS26LS33A, −15V ≤ VCM +15V −0.5 ± 0.07 ± 0.14 Input Resistance −15V ≤ VCM ≤ +15V (One Input AC GND) V IN = 15V, Other Input −15V ≤ VIN ≤ +15V V IN = −15V, Other Input −15V ≤ VIN ≤ +15V 6.0 8.5 Input Current (Under Test) VOH VOL Output High Voltage Output Low Voltage Conditions VCC = MIN, ∆VIN = 1V, VENABLE = 0.8V, IOH = −440 µA VCC = Min, ∆VIN = −1V, VENABLE = 0.8V VIL Enable Low Voltage VIH Enable High Voltage VI Enable Clamp 0.5 V kΩ 2.3 mA −2.8 mA Commercial 2.7 4.2 V Military IOL = 4 mA IOL = 8 mA 2.5 4.2 V 0.4 V 0.45 V 0.8 2.0 V V VCC = Min, IIN = −18 mA −1.5 V Voltage IO OFF-State (High V CC = Max VO = 2.4V VO = 0.4V Impedance) Output 20 µA −20 µA −0.36 mA Current IIL Enable Low Current IIH Enable High Current ISC Output Short-Circuit VIN = 0.4V VIN = 2.7V V O = 0V, VCC = Max, ∆VIN = 1V −15 20 µA −85 mA Current ICC Power Supply VCC = Max, All VIN = GND, DS26LS32, DS26LS32A 52 70 mA Current Outputs Disabled VIN = 5.5V DS26LS33, DS26LS33A 57 80 mA TA = 25˚C, VCC = 5V, VCM = 0V DS26LS32, DS26S32A 100 mV DS26LS33, DS26LS33A 200 mV II Input High Current VHYST Input Hysteresis 100 µA Note 3: “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 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 otherwise specified. All values shown as max or min are so classified on absolute value basis. Note 5: All typical values are VCC = 5V, TA = 25˚C. Note 6: Only one output at a time should be shorted. 3 www.national.com Switching Characteristics VCC = 5V, TA = 25˚C Symbol Parameter Conditions DS26LS32/DS26LS33 Min tPLH Input to Output CL = 15 pF tPHL tLZ ENABLE to Output CL = 5 pF tHZ tZL ENABLE to Output CL = 15 pF tZH Typ DS26LS32A/DS26LS33A Max Min Typ 17 25 23 35 ns 17 25 23 35 ns 20 30 15 30 ns 15 22 20 25 ns 15 22 14 22 ns 15 22 15 22 ns AC Test Circuit and Switching Time Waveforms Load Test Circuit for TRI-STATE ® Outputs DS005255-3 Propagation Delay (Notes 7, 9) Enable and Disable Times (Notes 8, 9) DS005255-4 DS005255-5 Note 7: Diagram shown for ENABLE low. Note 8: S1 and S2 of load circuit are closed except where shown. Note 9: Pulse generator for all pulses: Rate = 1.0 MHz; ZO = 50Ω; tr ≤ 6 ns; tf ≤ 6.0 ns. Typical Applications Two-Wire Balanced Interface — RS-422 DS005255-6 www.national.com Units Max 4 Typical Applications (Continued) Single Wire with Driver Ground Reference — RS-423 DS005255-7 5 www.national.com Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number DS26LS32MJ/883 or DS26LS33MJ/883 NS Package Number J16A Small Outline Package (M) Order Number DS26LS32CM or DS26LS32ACM NS Package Number M16A www.national.com 6 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number DS26LS32CN or DS26LS32ACN NS Package Number N16E 16 Lead Ceramic Flatpak (W) Order Number DS26LS32MW/883 or DS26LS33MW/883 NS Package Number W16A 7 www.national.com DS26LS32AC/DS26LS32C/DS26LS32M/DS26LS33MQuad Differential Line Receivers Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20 Lead Ceramic Leadless Chip Carrier (E) Order Number DS26LS32ME/883 NS Package Number E20A 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. 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