DS26LS31C NSC | Alldatasheet
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Features
n Output skew — 2.0 ns typical n Input to output delay — 10 ns typical n Operation from single 5V supply n Outputs won’t load line when VCC =0 V n Four line drivers in one package for maximum package density n Output short-circuit protection n Complementary outputs n Meets the requirements of EIA Standard RS-422 n Pin compatible with AM26LS31 n Available in military and commercial temperature range Logic and Connection Diagrams 00577801 Dual-In-Line Package 00577802 Top View Order Number DS26LS31CM, or DS26LS31CN See NS Package M16A or N16E For Complete Military Product Specifications, refer to the appropriate SMD or MDS. Order Number DS26LS31MJ/883, DS26LS31ME/883 or DS26LS31MW/883 See NS Package E20A, J16A or W16A TRI-STATE® is a registered trademark of National Semiconductor Corporation. June 1998 DS26LS31C/DS26LS31M Quad High Speed Differential Line Driver © 2004 National Semiconductor Corporation DS005778 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 7V Input Voltage 7V Output Voltage 5.5V Output Voltage (Power OFF) −0.25 to 6V Maximum Power Dissipation (Note 1) at 25˚C Cavity Package 1509 mW Molded DIP Package 1476 mW Operating Conditions Min Max Units Supply Voltage, VCC DS26LS31M 4.5 5.5 V DS26LS31 4.75 5.25 V Temperature, T A DS26LS31M −55 +125 ˚C DS26LS31 0 +70 ˚C Note 1: Derate cavity package 10.1 mW/˚C above 25˚C; derate molded DIP package 11.9 mW/˚C above 25˚C; derate SO package 8.41 mW/˚C above 25˚C. Electrical Characteristics(Notes 3, 4, 5) Symbol Parameter Conditions Min Typ Max Units VOH Output High Voltage I OH = −20 mA 2.5 V VOL Output Low Voltage I OL =2 0m A 0 . 5 V VIH Input High Voltage 2.0 V VIL Input Low Voltage 0.8 V IIL Input Low Current V IN = 0.4V −40 −200 µA IIH Input High Current V IN = 2.7V 20 µA II Input Reverse Current V IN = 7V 0.1 mA IO TRI-STATE Output Current V O = 2.5V 20 µA VO = 0.5V −20 µA VCL Input Clamp Voltage I IN = −18 mA −1.5 V ISC Output Short-Circuit Current −30 −150 mA ICC Power Supply Current All Outputs Disabled 35 60 mA or Active Switching Characteristics VCC = 5V, TA = 25˚C Symbol Parameter Conditions Min Typ Max Units tPLH Input to Output C L =3 0p F 1 0 1 5 n s tPHL Input to Output C L =3 0p F 1 0 1 5 n s Skew Output to Output C L = 30 pF 2.0 6.0 ns tLZ Enable to Output C L = 10 pF, S2 Open 15 35 ns tHZ Enable to Output C L = 10 pF, S1 Open 15 25 ns tZL Enable to Output C L = 30 pF, S2 Open 20 30 ns tZH Enable to Output C L = 30 pF, S1 Open 20 30 ns 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 devices should be operated at these limits. The tables of “Electrical Characteristics” provide 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 DS726LS31M and across the 0˚C to +70˚C range for the DS26LS31. All typicals are given for V CC = 5V and TA = 25˚C. Note 4: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to ground unless otherwise speci fied. Note 5: Only one output at a time should be shorted. DS26LS31C/DS26LS31M www.national.com 2
Two-Wire Balanced System, RS-422 00577806 Note 6: RT is optional although highly recommended to reduce reflection. Typical Performance Characteristics DS26LS31CN Unloaded IC vs Frequency vs TA DS26LS31 ICC vs VCC vs TA 00577807 00577808 DS26LS31CN VOH vs IOH vs TA DS26LS31CN VOL vs IOL vs TA 00577809 00577810 DS26LS31C/DS26LS31M www.national.com 4
Typical Performance Characteristics (Continued) DS26LS31CN VOD vs IO vs TA 00577811 DS26LS31C/DS26LS31M www.national.com5
Physical Dimensions inches (millimeters) unless otherwise noted Small Outline Package (M) Order Number DS26LS31CM Molded Dual-In-Line Package (N) Order Number DS26LS31CN DS26LS31C/DS26LS31M www.national.com 6
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
16 Lead Ceramic Flatpak (F)
Order Number DS26LS31MW/883
16 Lead Ceramic Dual-in-Line Package (J)
Order Number DS26LS31MJ/883 DS26LS31C/DS26LS31M www.national.com7
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20 Lead Ceramic Leadless Chip Carrier (E)
Order Number DS26LS31MJE/883 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. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 www.national.com DS26LS31C/DS26LS31M Quad High Speed Differential Line Driver National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the righ t at any time without notice to change said circuitry and specifications.