1、SN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19981POST OFFICE BOX 655303 DALLAS, TEXAS 75265C0068 Meets or Exceeds the Requirements ofTIA/EIA-422-B, TIA/EIA-485-A, and ITURecommendation V.11C0068 Bus Voltage Range.7 V to 12 VC0068 Positive- and Negative-Current Lim
2、itingC0068 Driver Output Capability.60 mA MaxC0068 Driver Thermal-Shutdown ProtectionC0068 Receiver Input Impedance.12 k MinC0068 Receiver Input Sensitivity.200 mVC0068 Receiver Input Hysteresis.50 mV TypC0068 Operates From Single 5-V SupplyC0068 Low Power RequirementsdescriptionThe SN75179B is a di
3、fferential driver and receiver pair designed for balanced transmission-line applicationsand meets TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11. It is designed to improve theperformance of full-duplex data communications over long bus lines.The SN75179B driver output provides limiting fo
4、r both positive and negative currents. The receiver features highinput impedance, input hysteresis for increased noise immunity, and input sensitivity of 200 mV over acommon-mode input voltage range of 7 V to 12 V. The driver provides thermal shutdown for protection fromline fault conditions. Therma
5、l shutdown is designed to occur at a junction temperature of approximately 150C.The SN75179B is designed to drive current loads of up to 60 mA maximum.The SN75179B is characterized for operation from 0C to 70C.Function TablesDRIVERINPUTOUTPUTSDY ZH H LL L HRECEIVERDIFFERENTIAL INPUTS OUTPUTA B RVID
6、0.2 V H0.2 V VID 0.2 V ?VID 0.2 V LOpen ?H = high level, L = low level, ? = indeterminateCopyright 1998, Texas Instruments IncorporatedPRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production proc
7、essing does not necessarily includetesting of all parameters.Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.12348765VCCRDGND
8、ABZYD OR P PACKAGE(TOP VIEW)SN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19982 POST OFFICE BOX 655303 DALLAS, TEXAS 75265logic symbolDR32YZBA5678This symbol is in accordance with ANSI/IEEE Std 91-1984and IEC Publication 617-12.logic diagram (positive logic)DR32YZBA
9、5678schematics of inputs and outputsTYPICAL OF ALL RECEIVER OUTPUTSTYPICAL OF ALL DRIVER OUTPUTSEQUIVALENT OF EACH RECEIVER INPUTEQUIVALENT OF DRIVER INPUTOutputVCC85 NOMInputVCC16.8 kNOM960 NOMGNDOutputVCCDriver input: R(eq)= 3 k NOMR(eq)= equivalent resistorInputVCC960 NOMSN75179BDIFFERENTIAL DRIV
10、ER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19983POST OFFICE BOX 655303 DALLAS, TEXAS 75265absolute maximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage, VCC(see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、. . . . . . . . . . . . . . . . . . . . . . . . . Voltage range at any bus terminal 10 V to 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Differential input voltage, VID(see Note 2) 25 V. . . . . . . . . . . . . . . . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, JA(see Note 3): D package 197C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P package 104C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg65C to 1
13、50C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stresses beyond those listed under “absolute maximum ratings” may ca
14、use permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is notimplied. Exposure to absolute-maximum-rated conditions for extended periods may affect devic
15、e reliability.NOTES: 1. All voltage values, except differential input voltage, are with respect to network ground terminal.2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input.3. The package thermal impedance is calculated in accordanc
16、e with JESD 51, except for through-hole packages, which use a tracelength of zero.recommended operating conditionsMIN NOM MAX UNITSupply voltage, VCC4.75 5 5.25 VHigh-level input voltage, VIHDriver 2 VLow-level input voltage, VILDriver 0.8 VCommon-mode input voltage, VIC712 VDifferential input volta
17、ge, VID12 VHigh level output current IOHDriver 60 mA-level output current, Receiver 400 ALow level output current IOLDriver 60mALow-level output current, Receiver 8Operating free-air temperature, TA0 70 CThe algebraic convention, where the less positive (more negative) limit is designated minimum, i
18、s used in this data sheet for common-mode inputvoltage and threshold voltage.SN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19984 POST OFFICE BOX 655303 DALLAS, TEXAS 75265DRIVER SECTIONelectrical characteristics over recommended ranges of supply voltage and operatin
19、g free-airtemperature (unless otherwise noted)PARAMETER TEST CONDITIONS MIN TYPMAX UNITVIKInput clamp voltage II= -18 mA 1.5 VVOOutput voltageIO= 0 0 6 VVOD1 Differential output voltage IO= 0 1.5 6 VVOD2 Differential output voltageRL= 100 , See Figure 11/2VOD1or 2VgRL= 54 , See Figure 1 1.5 2.5 5 VV
20、OD3 Differential output voltage See Note 4 1.5 5 VVODChange in magnitude of common-modeoutput voltage0.2 VVOCCommon-mode output voltage RL= 54 or 100 , See Figure 131VVOCChange in magnitude of common-modeoutput voltage0.2 VIOOutput current VCC= 0, VO= 7 V to 12 V 100 AIIHHigh-level input current VI=
21、 2.4 V 20 AIILLow-level input current VI= 0.4 V 200 AIOSShort circuit output currentVO= 7 V 250mA-circuit output currentVO= VCCor 12 V 250ICCSupply current (total package) No load 57 70 mAAll typical values are at VCC= 5 V and TA= 25C.The minimum VOD2with 100- load is either 1/2 VOD2or 2 V, whicheve
22、r is greater.|VOD| and |VOC| are the changes in magnitude of VODand VOC, respectively, that occur when the input changes from a high level to a lowlevel.NOTE 4: See TIA/EIA-485-A, Figure 3.5, Test Termination Measurement 2.switching characteristics, VCC= 5 V, TA= 25CPARAMETER TEST CONDITIONS MIN TYP
23、 MAX UNITtd(OD)Differential output delay timeRL=54 See Figure 315 22 nstt(OD)Differential output transition time= 54 , Figure 20 30 nsSymbol EquivalentsDATA-SHEET PARAMETER TIA/EIA-422-B TIA/EIA-485-AVOVoa, VobVoa, Vob|VOD1| VoVo|VOD2| Vt(RL= 100 ) Vt(RL= 54 )|VOD3| Vt(Test Termination Measurement 2
24、)|VOD| |Vt|Vt| |Vt|Vt|VOC|Vos| |Vos|VOC| |VosVos| |VosVos|IOS|Isa|, |Isb|IO|Ixa|, |Ixb| Iia, IibSN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19985POST OFFICE BOX 655303 DALLAS, TEXAS 75265RECEIVER SECTIONelectrical characteristics over recommended ranges of common-
25、mode input voltage, supplyvoltage, and operating free-air temperature (unless otherwise noted)PARAMETER TEST CONDITIONS MIN TYPMAX UNITVIT+Positive-going input threshold voltage VO= 2.7 V, IO= 0.4 mA 0.2 VVITNegative-going input threshold voltage VO= 0.5 V, IO= 8 mA 0.2VVhysHysteresis voltage (VIT+
26、VIT) 50 mVVOHHigh-level output voltage VID= 200 mV, IOH= 400 A, See Figure 2 2.7 VVOLLow-level output voltage VID= 200 mV, IOL= 8 mA, See Figure 2 0.45 VIILine input current Other input at 0 V See Note 5VI= 12 V 1mA input current input , VI= 7 V 0.8riInput resistance 12 kIOSShort-circuit output curr
27、ent 15 85 mAICCSupply current (total package) No load 57 70 mAAll typical values are at VCC= 5 V, TA= 25C.The algebraic convention, where the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode inputvoltage and threshold voltage levels only.NOTE 5: R
28、efer to TIA/EIA-422-B for exact conditions.switching characteristics, VCC= 5 V, TA= 25CPARAMETER TEST CONDITIONS MIN TYP MAX UNITtPLHPropagation delay time, low- to high-level outputVID= 1.5 V to 1.5 V,19 35 nstPHLPropagation delay time, high- to low-level outputCL= 15 pF, See Figure 430 40 nsPARAME
29、TER MEASUREMENT INFORMATIONVOD2RL2VOCRL2Figure 1. Driver VDDand VOCVIDIOHVOH+IOLVOLFigure 2. Receiver VOHand VOLSN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19986 POST OFFICE BOX 655303 DALLAS, TEXAS 75265PARAMETER MEASUREMENT INFORMATION (CONTINUED)tt(OD)tt(OD)50%
30、50%10%90%td(OD)td(OD)OutputInput 2.5 V0 V3 V1.5 V1.5 VOutputCL= 50 pF(see Note B)RL= 54 50 2.5 VTEST CIRCUIT VOLTAGE WAVEFORMSGenerator(see Note A)NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR 1 MHz, 50% duty cycle, tr 6 ns,tf 6 ns, ZO= 50 .B. CLinclu
31、des probe and jig capacitance.Figure 3. Driver Test Circuit and Voltage WaveformsVOLTAGE WAVEFORMSTEST CIRCUITVOLVOH1.3 VtPHLtPLH1.5 V50 OutputInput0 V3 V1.5 VOutputGenerator(see Note A)CL= 50 pF(see Note B)1.5 V1.3 VNOTES: A. The input pulse is supplied by a generator having the following character
32、istics: PRR 1 MHz, 50% duty cycle, tr 6 ns,tf 6 ns, ZO= 50 .B. CLincludes probe and jig capacitance.Figure 4. Receiver Test Circuit and Voltage WaveformsSN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19987POST OFFICE BOX 655303 DALLAS, TEXAS 75265TYPICAL CHARACTERIST
33、ICS2.51.5100 20 40 60 High-Level Output Voltage V 3.54DRIVERHIGH-LEVEL OUTPUT VOLTAGEvsHIGH-LEVEL OUTPUT CURRENT5 80 100 120VOH4.5320.5IOH High-Level Output Current mAVCC= 5 VTA= 25CFigure 5DRIVERLOW-LEVEL OUTPUT VOLTAGEvsLOW-LEVEL OUTPUT CURRENTFigure 62.52100204060 Low-Level Output Voltage V3.5458
34、0 100 1204.531.50.5VOLIOL Low-Level Output Current mAVCC= 5 VTA= 25C21.50.500102030405060 Differential Output Voltage V2.53.5DRIVERDIFFERENTIAL OUTPUT VOLTAGEvsOUTPUT CURRENT470 80 90 10013ODVIO Output Current mAVCC= 5 VTA= 25CFigure 7VIT+VIT+2.5210.504.51.5125 100 75 50 25 0 253.534RECEIVEROUTPUT V
35、OLTAGEvsDIFFERENTIAL INPUT VOLTAGE550 75 100 125VID Differential Input Voltage mV Output Voltage VVOVCC= 5 V IO= 0 TA= 25CVITVIT+VIC=12 VVIC=12 VVITVITVIC=0Figure 8SN75179BDIFFERENTIAL DRIVER AND RECEIVER PAIRSLLS003E OCTOBER 1985 REVISED JUNE 19988 POST OFFICE BOX 655303 DALLAS, TEXAS 75265TYPICAL
36、CHARACTERISTICS2.5210.504.51.50 5 10 15 20 25 30 High-Level Output Voltage V3.5345 35 40 45 50HIGH-LEVEL OUTPUT VOLTAGEvsHIGH-LEVEL OUTPUT CURRENTIOH High-Level Output Current mAVOHVCC= 4.75 VVID= 0.2 VTA= 25CVCC= 5 VVCC= 5.25 VFigure 92.5210.504.51.501020304050603.534HIGH-LEVEL OUTPUT VOLTAGEvsFREE
37、-AIR TEMPERATURE570 80 90 High-Level Output Voltage VVOHTA Free-Air Temperature CVCC= 5 VVID= 0.2 VIOH= 440 AFigure 10RECEIVERLOW-LEVEL OUTPUT VOLTAGEvsLOW-LEVEL OUTPUT CURRENT0.30.20.1005100.40.50.615 20 25 30 Low-Level Output Voltage - VVOLIOL Low-Level Output Current mAVCC= 5 VTA= 25CFigure 110.2
38、0.1001020304050600.30.4RECEIVERLOW-LEVEL OUTPUT VOLTAGEvsFREE-AIR TEMPERATURE0.570 80 90 Low-Level Output Voltage VVOLTA Free-Air Temperature CVCC= 5 VVID= 0.2 VIOL= 8 mAFigure 12PACKAGE OPTION ADDENDUM 10-Jun-2014Addendum-Page 1PACKAGING INFORMATIONOrderable Device Status(1)Package Type PackageDraw
39、ingPins PackageQtyEco Plan(2)Lead/Ball Finish(6)MSL Peak Temp(3)Op Temp (C) Device Marking(4/5)SamplesSN75179BD ACTIVE SOIC D 8 75 Green (RoHS& no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 0 to 70 75179BSN75179BDE4 ACTIVE SOIC D 8 75 Green (RoHS& no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 0 to 70 75179BSN75179B
40、DR ACTIVE SOIC D 8 2500 Green (RoHS& no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 0 to 70 75179BSN75179BDRG4 ACTIVE SOIC D 8 2500 Green (RoHS& no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 0 to 70 75179BSN75179BP ACTIVE PDIP P 8 50 Pb-Free(RoHS)CU NIPDAU N / A for Pkg Type 0 to 70 SN75179BPSN75179BPE4 ACTIVE PDIP
41、P 8 50 Pb-Free(RoHS)CU NIPDAU N / A for Pkg Type 0 to 70 SN75179BPSN75179BPSR ACTIVE SO PS 8 2000 Green (RoHS& no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 0 to 70 A179BSN75179BPSRE4 ACTIVE SO PS 8 2000 Green (RoHS& no Sb/Br)CU NIPDAU Level-1-260C-UNLIM 0 to 70 A179B(1) The marketing status values are defi
42、ned as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this
43、part in a new design.PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) -
44、 please check http:/ for the latest availabilityinformation and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TIs terms “Lead-Free“ or “Pb-Free“ mean semiconductor products that are compatible with the current RoHS requirements for all
45、 6 substances, including the requirement thatlead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1)
46、 lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used betweenthe die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines “Green“ to mean Pb-Free (RoHS compatible), and fr
47、ee of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weightin homogeneous material)(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.PACKAGE OPTION ADDENDUM 10-Jun-2
48、014Addendum-Page 2(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a “ will appear on a device. If a line is indented then it is a continuationof the previous line and the two combined represent the entire Device Marking for that device.(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separa
