DS8924 AD | Alldatasheet
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i>] - 8 s ZANational id Semiconductor DS8924 Quad TRI-STATE® Differential Line Driver General Description Features ‘The DS8924 is a quad differential line driver designed for ™ Four independent driver chains digital data transmission over balanced lines. The outputs = TRI-STATE outputs are TRI-STATE® structures which are forced to a high im- — PNP high impedance inputs pedance state when the appropriate output control pin Power up/down protection reaches a logic zero condition. All input pins are PNP but Fast propagation times (typ 12 ns) ered to minimize input loading for either logic one or logic +11 compatible zero inputs. In addition, internal circuitry assures a high im- \\ sy a ta pedance output state during the transition between power Single SV supply voltage up and power down. @ Output rise and fall times less than 20 ns (typ 10 ns) The DS8924 is pin and functionally compatible with ™ Pin compatible with DS3487 and MC3487 $3487. It features improved performance over 3487-type ™ Output skew—2 ns typ circuit as outputs can source and sink 48 mA. In addition, outputs are not significantly affected by negative line reflec- tions that can occur when the transmission line is untermi- nated at the receiver end. Block and Connection Diagrams Dual-In-Line Package NON-INVERTING INPUT A— 1 veg NPUT 2 us inpUT D. OUTPUTS A INVERTING { 2 “ 1 13 | OUTPUTS D ‘A/B CONTROL ouTPUT 5 12 CONTROL C/0 CONTROL TUF/8507—1 OUTPUTS B { 6 fl outputs INPUT B: 10 } GND u 2 INPUT C suvesor-2 Top View Order Number DS8924J or N See NS Package J16A or N16A Truth Table Control Input H H H L L H L H x L Zz z = Low loge sate 'H = High logic state X= braovant Z = TRISTATE (igh impedance) 1-239
x 8| Absolute Maximum Ratings (vote 1)
8 If Military/Aerospace specified devices are required, Maximum Power Dissipation* at 25°C
Please contact the National Semiconductor Sales Cavity Package 1550 mW Office/Distributors for availability and specifications. Molded Package 1560 mW Supply Voltage Ww “Doraio cavity package 10:3 mW/C above 26°C; derate molded package Input Votage sav 125 mWPC above 25°C. Storage Temperature 65°C to + 150°C Operating Conditions Lead Temperature (Soldering, 4 sec.) 260°C Min Max Units Supply Voltage (Voc) Ds8924 4.75 5.25 v Temperature (Ta) 0s8924 t) 70 *c Electrical Characteristics (notes 2, 3, 4 ands) Symbol | __—Parameter__— [Conditions [Min | Typ | Max | Units Vie [ inputtowvowage TV Vin [ inputHighVotage TC eo TT in | input Low Current TV osy TT | 200 |p [vm=ssv [| | | 100 [pa Vou | InputCiamp Voltage iq = tema || a Tv Vou | Outputtow Voltage gu = 48mA | os v Vou | OutputHighVoitage | tg = ~20ma | os | TT Vou | OutputHigh Voltage | ton = —48mA | 20 | TLV los | Output Shor-GircuitGurent || 80 || 260 | ma loz Output Leakage Current (TRISTATE) ee, [vo=ssv [| | 100 | lorr Output Leakage Current Power OFF [oo en} | BA [Vo==o2sv| [| =100 | na Nos=Vosl | DitferenceinOutputOrtset Voltage [| | Tf | Vr [ Diterentia Ouputvotage | SSSSCSC~ | Voltage lec Power Supply Current [Active [| 60 | 80 | ma [ tarstare [| 35 [60 | ma Switching Characteristics vcc = 5v, T, = 26°C symbol [Parameter [| __—Gonditions Min. [Typ [Max | Units tom [| inputtoutput Pt 20s tou | Inputto Output Pt 20s Skew | OutputtoOutpt | = spr TT 20 TO ns tue | DiterentalFaltime [SSS dt 20 tn | Differential iseTime [TT ts teuz | EnabietoOutput_ | Fy = 20006, = 50pF | Ta Tass tz | EnabletoOutput__ [A= 2000, = 60pF || 20 [0s ez | EnabletoOutput_ | AL= =, = 50pF,S1Open || 3 | 25 | ns tz | EnabietoOutput_ | Fy = 2000,0, = 50pF,S20pen | | i7_ | 30 | ns ‘Note +: "Absolute Maximum Ratings” are those valuos beyond which the safety ofthe device cannot be guaranteed. They are not meant tory thatthe dovcos should be operated at hese tits. The tables of “Electical Charectenses” provide condttons for actval device operation, Note 2 Unioas otherwise specifi, minv/max Its apply across the (FC to + 70°C rango forthe DS8024. All ypicals are given for Voc = SV and Ta = 25°C. Note 3: All currents ino davice pins are positive; al curents out of device pin are negative. All votages are reterenced to ground unless otherwise spactiod Note 4: Only one output at @ time should be shorted. Note §: Symbols and definitions correspond to ElA A'S-422, where applicable. 1-240