元器件交易网www.cecb2b.com AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998DMeets or Exceeds the Requirements ofDDDDDANSI TIA/EIA-422-B and ITURecommendation V.11Operates From a Single 5-V SupplyTTL CompatibleComplementary OutputsHigh Output Impedance in Power-OffConditionsComplementary Output-Enable InputsD OR N PACKAGE(TOP VIEW)1A1Y1ZG2Z2Y2AGND12345678161514131211109VCC4A4Y4ZG3Z3Y3AdescriptionThe AM26LS31C is a quadruple complementary-output line driver designed to meet the requirements ofANSI TIA/EIA-422-B and ITU (formerly CCITT) Recommendation V.11. The 3-state outputs have high-currentcapability for driving balanced lines such as twisted-pair or parallel-wire transmission lines, and they providea high-impedance state in the power-off condition. The enable function is common to all four drivers and offersthe choice of an active-high or active-low enable (G, G) input. Low-power Schottky circuitry reduces powerconsumption without sacrificing speed.The AM26LS31C is characterized for operation from 0°C to 70°C.FUNCTION TABLE(each driver)INPUTAHLHLXENABLESGHHXXLGXXLLHOUTPUTSYHLHLZZLHLHZH = high level, L = low level, X = irrelevant,Z = high impedance (off)Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.PRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.Copyright © 1998, Texas Instruments IncorporatedPOST OFFICE BOX 655303 DALLAS, TEXAS 75265•1元器件交易网www.cecb2b.comSLLS114D – JANUARY 1979 – REVISED OCTOBER 1998AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER logic symbol†GG412≥1EN 1A172365101114131Y1Z2Y2Z3Y3Z4Y4Z2A3A94A15logic diagram (positive logic)GG1A41212365101114131Y1Z2Y2Z3Y3Z4Y4Z2A73A94A152POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998schematic (each driver)Input AV22 kΩ9 ΩOutput Y9 ΩOutput ZCommon to All Four DriversVCCV22 kΩ22 kΩEnable GEnable GTo Three Other DriversGNDAll resistor values are nominal.absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 VInput voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 VOutput off-state voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 VPackage thermal impedance, θJA (see Note 2):D package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/WN package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . °C to 150°CStorage temperature range, Tstg –65Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C†Stresses beyond those listed under “absolute maximum ratings” may cause 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 device reliability.NOTES:1.All voltage values, except differential output voltage VOD, are with respect to network GND.2.The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a tracelength of zero.POST OFFICE BOX 655303 DALLAS, TEXAS 75265•3元器件交易网www.cecb2b.comSLLS114D – JANUARY 1979 – REVISED OCTOBER 1998AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER recommended operating conditions (unless otherwise noted)MINSupply voltage, VCCHigh-level input voltage, VIHLow-level input voltage, VILHigh-level output current, IOHLow-level output current, IOLOperating free-air temperature, TA04.7520.8–202070NOM5MAX5.25UNITVVVmAmA°C electrical characteristics over operating free-air temperature range (unless otherwise noted)PARAMETERVIKVOHVOLIOZIIIIHIILIOSInput clamp voltageHigh-level output voltageLow-level output voltageOffstate(highimpedancestate)outputcurrentOff-state (high-impedance-state) output currentInput current at maximum input voltageHigh-level input currentLow-level input currentShort-circuit output current‡TEST CONDITIONSVCC = 4.75 V,VCC = 4.75 V,VCC = 4.75 V,VCC = 4.75 V=475VVCC = 5.25 V,VCC = 5.25 V,VCC = 5.25 V,VCC = 5.25 VII = –18 mAIOH = –20 mAIOL = 20 mAVO = 0.5 VVO = 2.5 VVI = 7 VVI = 2.7 VVI = 0.4 V–30MIN2.50.5–20200.120–0.36–15080TYP†MAX–1.5UNITVVVµAmAµAmAmAmAICCSupply currentVCC = 5.25 V,All outputs disabled32†All typical values are at VCC = 5 V and TA = 25°C.‡Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1)PARAMETERtPLHtPHLtPZHtPZLtPHZtPLZPropagation delay time, low-to-high-level outputPropagation delay time, high-to-low-level outputOutput enable time to high levelOutput enable time to low levelOutput disable time from high levelOutput disable time from low levelOutput-to-output skewTEST CONDITIONS=30pFCL = 30 pF,CL = 30 pF=30pFCL = 10 pF,=10pFCL = 30 pF,S1andS2openS1 and S2 openRL = 75 ΩRL = 180 ΩS1andS2closedS1 and S2 closedS1 and S2 openMINTYP1414253721231MAX2020404530356UNITnsnsnsns4POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998PARAMETER MEASUREMENT INFORMATIONInput A(see Notes Band C)3 V1.3 VtPLHOutput YSkew75 ΩS2tPHLOutput ZPROPAGATION DELAY TIMES AND SKEW1.5 VTEST CIRCUITSkewtPLHVOHVOL1.3 V0 VtPHL1.5 VVOHVOLTest PointVCC180 ΩFrom OutputUnder TestCL(see Note A)S1Enable G(see Note D)Enable G3 V1.5 VtPZLSee Note DtPLZ≈4.5 VS1 ClosedS2 OpentPZH1.5 V0.5 V0.5 V1.5 V0 VS1 ClosedS2 Closed≈1.5 VVOLtPHZWaveform 1(see Note E)Waveform 2(see Note E)S1 OpenS2 Closed1.5 V≈0 VS1 ClosedS2 ClosedVOH≈1.5 VENABLE AND DISABLE TIME WAVEFORMSNOTES:A.B.C.D.E.CL includes probe and jig capacitance.All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω, tr ≤ 15 ns, tf ≤ 6 ns.When measuring propagation delay times and skew, switches S1 and S2 are open.Each enable is tested separately.Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.Figure 1. Test Circuit and Voltage WaveformsPOST OFFICE BOX 655303 DALLAS, TEXAS 75265•5元器件交易网www.cecb2b.comSLLS114D – JANUARY 1979 – REVISED OCTOBER 1998AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER TYPICAL CHARACTERISTICSOUTPUT VOLTAGEvsENABLE G INPUT VOLTAGE4 OUTPUT VOLTAGEvsENABLE G INPUT VOLTAGE4Load = 470 Ω to GNDTA = 25°CSee Note AVCC = 5.25 VVCC = 5 VVCC = 5 VLoad = 470 Ω to GNDSee Note ATA = 70°CVO – Y Output Voltage – VVCC = 4.75 VVO – Y Output Voltage – V33TA = 0°CTA = 25°C221100123VI – Enable G Input Voltage – V00123VI – Enable G Input Voltage – VFigure 2OUTPUT VOLTAGEvsENABLE G INPUT VOLTAGE6Figure 3OUTPUT VOLTAGEvsENABLE G INPUT VOLTAGE6VCC = 5.25 VVCC = 5 V5VO – Output Voltage – V5VO – Output Voltage – V4VCC = 4.75 V4TA = 70°C33TA = 25°C2TA = 0°C2100Load = 470 Ω to VCCTA = 25°CSee Note B112300VCC = 5 VLoad = 470 Ω to VCCSee Note B123VI – Enable G Input Voltage – VVI – Enable G Input Voltage – VFigure 4Figure 5NOTES:A.The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs.B.The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z outputs.6POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998TYPICAL CHARACTERISTICSHIGH-LEVEL OUTPUT VOLTAGEvsFREE-AIR TEMPERATURE5HIGH-LEVEL OUTPUT VOLTAGEvsHIGH-LEVEL OUTPUT CURRENT4VCC = 5.25 VVCC = 5 VSee Note AVOH– High-Level Output Voltage – V4VOH– High-Level Output Voltage – VVCC = 5 VIOH = –20 mA33IOH = –40 mAVCC = 4.75 V221TA = 25°CSee Note A–20100255075TA – Free-Air Temperature –°C00–40–60–80–100IOH – High-Level Output Current – mAFigure 6LOW-LEVEL OUTPUT VOLTAGEvsFREE-AIR TEMPERATURE0.51Figure 7LOW-LEVEL OUTPUT VOLTAGEvsLOW-LEVEL OUTPUT CURRENTVOL– Low-Level Output Voltage – VVCC = 5 VIOL = 40 mASee Note B0.90.80.70.60.50.4TA = 25°CSee Note BVOL– Low-Level Output Voltage – V0.40.3VCC = 4.75 V0.20.30.20.1VCC = 5.25 V0.100255075TA – Free-Air Temperature – °C0020406080100120IOL – Low-Level Output Current – mAFigure 8Figure 9NOTES:A.The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs.B.The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z inputs.POST OFFICE BOX 655303 DALLAS, TEXAS 75265•7元器件交易网www.cecb2b.comSLLS114D – JANUARY 1979 – REVISED OCTOBER 1998AM26LS31CQUADRUPLE DIFFERENTIAL LINE DRIVER TYPICAL CHARACTERISTICSY OUTPUT VOLTAGEvsDATA INPUT VOLTAGE5 Y OUTPUT VOLTAGEvsDATA INPUT VOLTAGE5No LoadTA = 25°CNo Load4VO – Y Output Voltage – VVCC = 4.75 VVO – Y Output Voltage – VVCC = 5.25 VVCC = 5 V4TA = 70°C33TA = 0°CTA = 25°C221100123VI – Data Input Voltage – V00123VI – Data Input Voltage – VFigure 10Figure 118POST OFFICE BOX 655303 DALLAS, TEXAS 75265•元器件交易网www.cecb2b.com
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