DS9638 RS-422 Dual High Speed Differential Line Driver

Absolute Maximum Ratings (Note 1)If MilitaryAerospace specified devices are requiredplease contact the National Semiconductor SalesOfficeDistributors for availability and specificationsStorage Temperature RangeCeramic DIPMolded DIP and SO-8Lead TemperatureCeramic DIP (Soldering 60 sec)Molded DIP (Soldering 10 sec)b65Ctoa175Cb65Ctoa150C300C265CRecommended Operating ConditionsMaximum Power Dissipation at 25CCavity Package1300 mWMolded Package930 mWSO Package810 mWV CC Lead Potential to Groundb5V to 7VInput Voltageb05V to a7VDerate cavity package 87 mWC above 25C derate molded DIP package75 mWC above 25C derate SO package 65 mWC above 25CDS9638MDS9638CMin Typ Max Min Typ Max UnitsSupply Voltage (V CC ) 45 50 55 475 50 525 VOutput Current HIGH (I OH ) b50 b50 mAOutput Current LOW (I OL ) 50 40 50 mAOperating Temperature (T A ) b55 25 125 0 25 70 CElectrical Characteristics Over recommended operating temperature and supply voltage ranges unless otherwisespecified (Notes23)Symbol Parameter Conditions Min Typ Max UnitsV IH Input Voltage HIGH 20 VV IL Input Voltage LOW 0Ctoa70C 08b55Ctoa125CV IC Input Clamp Voltage V CC e Min I I eb18 mA b10 b12 VV OH Output Voltage HIGH V CC e Min I OH eb10 mA 25 35V IH e V IH Min V IL e V IL MaxI OH eb40 mA 20V OL Output Voltage LOW V CC e Min V IH e V IH Min V IL e V IL Max I OL e 40 mAI I Input Current at Maximum V CC e Max V I Max e 55VInput Voltage0505VVV50 mAI IH Input Current HIGH V CC e Max V IH e 27V 25 mAI IL Input Current LOW V CC e Max V IL e 05V b200 mAI OS Output Short Circuit Current V CC e Max V O e 0V (Note 4) b50 b150 mAV T V T Terminated Output Voltage See Figure 1 20 VV T –V T Output Balance 04 VV OS V OS Output Offset Voltage 30 VV OS –V OS Output Offset Balance 04 VI X Output Leakage Current T A e 25Cb025V k V Xk 55V100 mAI CC Supply Current V CC e 55V(Both Drivers) All input at 0V 45 65 mANo LoadNote 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 devicesshould be operated at these limits The tables of ‘‘Electrical Characteristics provide conditions for actual device operationNote 2 Unless otherwise specified minmax limits apply across the b55C toa125C temperature range for the DS9638M and across the 0C toa70C range forthe DS9638C All typicals are given for V CC e 5V and T A e 25CNote 3 All currents into the device pins are positive all currents out of the device pins are negative All voltages are referenced to ground unless otherwisespecifiedNote 4 Only one output at a time should be shortedhttpwwwnationalcom 2

Switching Characteristics V CC e 50V T A e 25CSymbol Parameter Conditions Min Typ Max Unitst PHL Propagation Delay C L e 15 pF 10 20 nst PLHR L e 100X See Figure 210 20 nst f Fall Time 90%–10% 10 20 nst r Rise Time 10%–90% 10 20 nst PO –t POSkew Between OutputsAA and BB10nsFIGURE 1 Equivalent CircuitTLF9622–23httpwwwnationalcom

DC Test CircuitTLF9622–3FIGURE 2 Terminated Output Voltage and Output BalanceNoteTLF9622–4The pulse generator has the following characteristicsPRR e 500 kHz t W e 100 nst rs 50 ns Z O e 50XC L includes probe and jig capacitanceFIGURE 3 AC Test Circuit and Voltage WaveformFIGURE 3aTLF9622–5TLF9622–6FIGURE 4 Typical Delay CharacteristicsFIGURE 4aTLF9622–7httpwwwnationalcom 4

Physical Dimensions inches (millimeters)Ceramic Dual-In-Line Package (J)Order Number DS9638CJ DS9638MJ or DS9638MJ883NS Package Number J08ACeramic Dual-In-Line Package (M)Order Number DS9638CMNS Package Number M08A5httpwwwnationalcom

DS9638 RS-422 Dual High Speed Differential Line DriverPhysical Dimensions inches (millimeters) (Continued)Molded Dual-In-Line Package (N)Order Number DS9638CNNS Package Number N08ELIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORTDEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONALSEMICONDUCTOR CORPORATION As used herein1 Life support devices or systems are devices or 2 A critical component is any component of a lifesystems which (a) are intended for surgical implant support device or system whose failure to perform caninto the body or (b) support or sustain life and whose be reasonably expected to cause the failure of the lifefailure to perform when properly used in accordance support device or system or to affect its safety orwith instructions for use provided in the labeling can effectivenessbe reasonably expected to result in a significant injuryto the userNational Semiconductor National Semiconductor National Semiconductor National SemiconductorCorporation Europe Hong Kong Ltd Japan Ltd1111 West Bardin Road Fax a49 (0) 180-530 85 86 13th Floor Straight Block Tel 81-043-299-2308Arlington TX 76017 Email europesupport nsccom Ocean Centre 5 Canton Rd Fax 81-043-299-2408Tel 1(800) 272-9959 Deutsch Tel a49 (0) 180-530 85 85 Tsimshatsui KowloonFax 1(800) 737-7018 English Tel a49 (0) 180-532 78 32 Hong KongFranais Tel a49 (0) 180-532 93 58 Tel (852) 2737-1600httpwwwnationalcom Italiano Tel a49 (0) 180-534 16 80 Fax (852) 2736-9960National 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