Details, datasheet, quote on part number: DS9638MJ
PartDS9638MJ
CategoryInterface and Interconnect => RS-422/RS-423
DescriptionDS9638 - RS-422 Dual High Speed Differential Line Driver, Package: Soic Narrow, Pin Nb=8
CompanyNational Semiconductor Corporation
DatasheetDownload DS9638MJ datasheet
Cross ref.Similar parts: 5962-8754601PA, UA9638CP, SN75158
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Features, Applications
DS9638 RS-422 Dual High Speed Differential Line Driver

The is a Schottky, TTL compatible, dual differential line driver designed specifically to meet the EIA Standard RS-422 specifications. It is designed to provide unipolar differential drive to twisted pair or parallel wire transmission lines. The inputs are TTL compatible. The outputs are similar to totem pole TTL outputs, with active pull-up and pull-down. The device features a short circuit protected active pull-up with low output impedance and is specified to drive 50 transmission lines at high speed. The mini-DIP provides high package density.

Features

Single 5V supply Schottky technology TTL and CMOS compatible inputs Output short circuit protection Input clamp diodes Complementary outputs Minimum output skew 1.0 ns typical) 50 mA output drive capability for 50 transmission lines Meets EIA RS-422 specifications Propagation delay of less than 10 ns "Glitchless" differential output Delay time stable with VCC and temperature variations 2.0 ns typical) (Figure 3) n Extended temperature range

Top View Order Number or DS9638CN See NS Package Number or N08E For Complete Military Product Specifications, refer to the appropriate SMD or MDS. Order Number DS9638MJ/883 See NS Package Number J08A

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Ceramic DIP Molded DIP and SO-8 Lead Temperature to +150C

Ceramic DIP (Soldering, 60 sec.) 300C Molded DIP (Soldering, 10 sec.) 265C Maximum Power Dissipation (Note at 25C Cavity Package 1300 mW Molded Package mW SO Package to 7V VCC Lead Potential to Ground Input Voltage to +7V

DS9638M Min Supply Voltage (VCC) Output Current HIGH (IOH ) Output Current LOW (IOL ) Operating Temperature 25 4.5 Typ 5.0 Max Min 4.75 DS9638C Typ 5.0 Max Units mA C

Note 1: Derate cavity package 8.7 mW/C above 25C; derate molded DIP package 7.5 mW/C above 25C; derate SO package 6.5 mWC above 25C.

Electrical Characteristics (Notes 3, 4) Over recommended operating temperature and supply voltage ranges, unless otherwise specified

Symbol VIH VIL VIC VOH Parameter Input Voltage HIGH Input Voltage LOW Input Clamp Voltage Output Voltage HIGH CC = Min, -18 mA VCC = Min, IOH -10 mA VIH = VIH Min, IOH -40 mA VIL = VIL Max CC = Min, VIH = VIH Min, V II IIH IIL IOS VT, V VTV

Output Voltage LOW Input Current at Maximum Input Voltage Input Current HIGH Input Current LOW Output Short Circuit Current Terminated Output Voltage Output Balance Output Offset Voltage Output Offset Balance Output Leakage Current Supply Current (Both Drivers)

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 to +125C temperature range for the DS9638M and across the to +70C range for the DS9638C. All typicals are given for VCC = 5V and = 25C. Note 4: All currents into the device pins are positive; all currents out of the device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 5: Only one output at a time should be shorted.

VCC = 25C. Symbol tPHL tPLH tf tr tPOtPO Fall Time, 90%10% Rise Time, 10%90% Skew Between Outputs A/A and B/B Parameter Propagation Delay Conditions = 100, See Figure 2 Min Typ Max Units ns

FIGURE 2. Terminated Output Voltage and Output Balance

 

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