SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 D D D D D D D SN55ALS194 . . . J OR W PACKAGE SN75ALS194 . . . D OR N PACKAGE (TOP VIEW) Meet or Exceed the Requirements of ANSI Standard EIA/TIA-422-B and ITU Recommendation V.11 Designed to Operate Up to 20 Mbaud 3-State TTL - Compatible Outputs Single 5-V Supply Operation High Output Impedance in Power-Off Condition Two Pairs of Drivers, Independently Enabled Designed as Improved Replacements for the MC3487 1A 1Y 1Z 1, 2EN 2Z 2Y 2A GND description 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC 4A 4Y 4Z 3, 4EN 3Z 3Y 3A SN55ALS194 . . . FK PACKAGE (TOP VIEW) 1Y 1A NC V CC 4A These four differential line drivers are designed for data transmission over twisted-pair or parallel-wire transmission lines. They meet the requirements of ANSI Standard EIA/TIA-422-B and ITU Recommendation V.11 and are compatible with 3-state TTL circuits. Advanced low-power Schottky technology provides high speed without the usual power penalty. Standby supply current is typically only 26 mA. Typical propagation delay time is less than 10 ns, and enable/disable times are typically less than 16 ns. 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 4Y 4Z NC 3, 4EN 3Z 2A GND NC 3A 3Y 1Z 1, 2EN NC 2Z 2Y High-impedance inputs keep input currents low: less than 1 µA for a high level and less than 100 µA for a low level. The driver circuits can be enabled in pairs by separate active-high enable inputs. The SN55ALS194 and SN75ALS194 are capable of data rates in excess of 20 megabits per second and are designed to operate with the SN55ALS195 and SN75ALS195 quadruple line receivers. NC – No internal connection The SN55ALS194 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN75ALS194 is characterized for operation from 0°C to 70°C. FUNCTION TABLE (each driver) OUTPUTS INPUTS A OUTPUT EN H H H L L H L H X L Z Z Y Z H = high level, L = low level, X = irrelevant, Z = high impedance Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1995, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 logic symbol† 1, 2EN 4 logic diagram (positive logic) 4 EN 1, 2EN 2 1A 1 3 6 2A 7 5 1Y 2 1A 1Z 12 6 2Z 9 11 14 4A 7 5 1Y 1Z 2Y 2Z EN 10 3A 3 2Y 2A 3, 4EN 1 15 13 3, 4EN 12 3Y 3Z 10 3A 4Y 9 11 3Y 3Z 4Z 14 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the D, J, N, and W packages. 4A 15 13 4Y 4Z schematics of inputs and outputs EQUIVALENT OF EACH DATA (A) INPUT VCC Input EQUIVALENT OF EACH ENABLE INPUT VCC EQUIVALENT OF EACH OUTPUT VCC Input Output 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) † Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Output voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: SN55ALS194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN75ALS194 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Case temperature for 60 seconds, TC: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or W package . . . . . . . . . . . . . 260°C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to network ground terminal DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 125°C POWER RATING D 950 mW 7.6 mW/°C 608 mW N/A FK 1375 mW 11.0 mW/°C 880 mW 275 mW J 1375 mW 11.0 mW/°C 880 mW 275 mW N 1150 mW 9.2 mW/°C 736 mW N/A W 1000 mW 8.0 mW/°C 640 mW 200 mW recommended operating conditions‡ SN55ALS194 Supply voltage, VCC All inputs, TA = 25°C High-level input voltage, VIH A inputs, TA = Full range EN inputs, TA = Full range NOM MAX MIN NOM MAX 4.5 5 5.5 4.75 5 5.25 2 2 2 2 2.1 2 Low-level input voltage, VIL High-level output current, IOH Low level output current, Low-level current IOL TA = 25°C TA = Full range Operating free-air temperature, TA – 55 ‡ Full range is TA = – 55°C to 125°C for SN55ALS194 and TA = 0°C to 70°C for SN75ALS194. POST OFFICE BOX 655303 SN75ALS194 MIN • DALLAS, TEXAS 75265 UNIT V V 0.8 0.8 V – 20 – 20 mA 48 48 20 48 125 0 70 mA °C 3 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature range (unless otherwise noted) TEST CONDITIONS† PARAMETER VIK Input clamp voltage VCC = MIN, VOH High level output voltage High-level VCC = MIN,, IOH = –20 mA VOL VO Low-level output voltage Output voltage VCC = MIN, IO = 0 |VOD1| Differential output voltage IO = 0 |VOD2| Differential output voltage ∆|VOD| Change in magnitude of differential output voltage¶ VOC Common-mode output voltage ∆|VOC| Change in magnitude of common-mode output voltage¶ IO Output current with power off VCC = 0 IOZ High-impedance-state output current VCC = MAX MAX, Output enables at 0.8 V II IIH Input current at maximum input voltage IIL IOS Low-level input current High-level input current Short-circuit output current# MIN II = – 18 mA SN55ALS194 2.4 SN75ALS194 2.5 TYP‡ MAX UNIT – 1.5 V V IOL = MAX 0.5 V 0 6 V 1.5 6 V 1/2 VOD1 or 2§ RL = 100 Ω, V See Figure 1 VO = 6 V VO = – 0.25 V ± 0.4 V ±3 V ± 0.4 V 100 – 100 VO = 2.7 V 100 VO = 0.5 V – 100 µA µA VCC = MAX, VCC = MAX, VI = 5.5 V VI = 2.7 V 100 µA 50 µA VCC = MAX, VCC = MAX, VI = 0.5 V VI = 2 V – 200 µA – 140 mA – 40 ICC Supply current (all drivers) VCC = MAX, All outputs disabled 26 45 mA † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. ‡ All typical values are at VCC = 5 V, TA = 25°C. § The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater. ¶ ∆ | VOD | and ∆ | VOC | are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low level. # 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 TEST CONDITIONS PARAMETER tPLH tPHL SN55ALS194 MIN Propagation delay time, low- to high-level output Propagation delay time, high- to low-level output F CL = 15 pF, See Figure 2 Output-to-output skew CL = 15 pF, See Figure 3 SN75ALS194 TYP MAX 6 9 MIN UNIT TYP MAX 13 6 13 ns 14 9 14 ns 3.5 6 3.5 6 ns 8 14 8 14 ns tt(OD) Differential output transition time tPZH tPZL Output enable time to high level 9 12 9 12 ns Output enable time to low level 12 20 12 20 ns tPHZ tPLZ Output disable time from high level 9 15 9 14 ns 12 15 12 15 ns 4 CL = 15 pF, See Figure 4 Output disable time from low level POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 SYMBOL EQUIVALENTS DATA SHEET PARAMETER EIA/TIA-422-B VO | VOD1 | Voa, Vob Vo | VOD2 | ∆ | VOD | Vt (RL = 100 Ω) | |Vt| – |Vt| | VOC ∆ | VOC | | Vos | | Vos – Vos | IOS IO |Isa|, |Isb| |Ixa| , |Ixb| RL 2 VOD2 RL 2 VOC Figure 1. Driver VOD and VOC PARAMETER MEASUREMENT INFORMATION 3V Input 5V S1 Generator (see Note A) 200 Ω 1.5 V 1.5 V 0V tPHL tPLH Y Output 1.5 V VOH 1.5 V 50 Ω VOL CL = 15 pF (see Note B) Skew Skew tPHL 3V tPLH VOH See Note C Z Output 1.5 V 1.5 V VOL VOLTAGE WAVEFORM TEST CIRCUIT NOTES: A. The input pulse is supplied by a generator having the following characteristics: tr ≤ 5 ns, tf ≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%, ZO ≈ 50 Ω . B. CL includes probe and stray capacitance. C. All diodes are 1N916 or 1N3064. Figure 2. Test Circuit and Voltage Waveform 3V Input Generator (see Note A) CL RL = 100 Ω 50 Ω 3V 0V Output CL CL = 15 pF (see Note B) TEST CIRCUIT tt(OD) tt(OD) 90% Output 10% VOLTAGE WAVEFORM NOTES: A. The input pulse is supplied by a generator having the following characteristics: tr ≤ 5 ns, tf ≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%, ZO ≈ 50 Ω . B. CL includes probe and stray capacitance. Figure 3. Differential-Output Test Circuit and Voltage Waveform POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 PARAMETER MEASUREMENT INFORMATION 5V Output S3 200 Ω S1 0 V or 3 V Generator (see Note A) 1 kΩ CL = 15 pF (see Note B) See Note C 50 Ω S2 TEST CIRCUIT Output Enable Input 3V 1.5 V 0V tPHZ Output S1 Closed S2 Closed VOH 0.5 V ≈ 1.5 V tPLZ Output S1 Closed S2 Closed 1.5 V ≈ 1.5 V 0.5 V VOL Output Enable Input 0V 3V 1.5 V tPZL Output S1 Closed S2 Open 1.5 V VOL tPZH Output S1 Open S2 Closed VOH 1.5 V VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: tr ≤ 5 ns, tf ≤ 5 ns, PRR ≤ 1 MHz, duty cycle ≤ 50%, ZO ≈ 50 Ω . B. CL includes probe and stray capacitance. C. All diodes are 1N916 or 1N3064. Figure 4. Driver Test Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS† Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE 5 4.5 VCC = 5 V Outputs Enabled No Load 4.5 4 VCC = 5.5 V 3.5 VO – Y Output Voltage – V VO – Y Output Voltage – V 5 No Load Outputs Enabled TA = 25°C VCC = 5 V VCC = 4.5 V 3 2.5 2 1.5 4 TA = 125°C 3.5 3 TA = 25°C 2.5 TA = 0°C TA = 70°C 2 TA = – 55°C 1.5 1 1 0.5 0.5 0 0 0 0.5 1 1.5 2 2.5 0 3 0.5 1 VI – Data Input Voltage – V Figure 5 2 2.5 3 Figure 6 Y OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE Y OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 4 5 VCC = 5.5 V VCC = 5 V VI = 2 V RL = 470 Ω to GND See Note A TA = 125°C 4.5 3.5 VCC = 5 V VO – Y Output Voltage – V VO – Y Output Voltage – V 1.5 VI – Data Input Voltage – V 3 VCC = 4.5 V 2.5 2 1.5 4 3.5 3 TA = 25°C 2.5 TA = 0°C TA = 70°C 2 TA = – 55°C 1.5 1 1 VI = 2 V RL = 470 Ω to GND See Note A TA = 25°C 0.5 0 0 0.5 1 1.5 2 2.5 0.5 0 3 0 0.5 VI – Enable G Input Voltage – V 1 1.5 2 2.5 3 VI – Enable G Input Voltage – V Figure 8 Figure 7 † Data for temperatures below 0°C and above 70°C are applicable to the SN55ALS194 circuits only. NOTE A: The A input is connected to VCC during the testing of the Y outputs and to GND during the testing of the Z outputs. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS† Z OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 6 VCC = 5 V VCC = 5 V RL = 470 Ω to VCC See Note B 5 VCC = 4.5 V VO – Z Output Voltage – V VO – Z Output Voltage – V 6 RL = 470 Ω to VCC TA = 25°C See Note A VCC = 5.5 V 5 Z OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE 4 3 2 1 4 TA = 125°C TA = 70°C 3 TA = 25°C TA = 0°C 2 TA = – 55°C 1 0 0 0.5 1 1.5 2 2.5 0 3 0 0.5 VI – Enable G Input Voltage – V 1 5 VOH – High-Level Output Voltage – V VCC = 5 V IOH = – 20 mA See Note A 4 3.5 3 2.5 2 1.5 1 0.5 4.5 TA = 25°C See Note A 4 3.5 VCC = 5.5 V 3 VCC = 5 V 2.5 VCC = 4.5 V 2 1.5 1 0.5 0 – 50 – 25 0 25 50 75 100 125 TA – Free-Air Temperature – °C 0 – 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 – 100 IOH – High-Level Output Current – mA Figure 11 Figure 12 † Data for temperatures below 0°C and above 70°C are applicable to the SN55ALS194 circuits only. NOTES: A. The A input is connected to VCC during the testing of the Y outputs and to GND during the testing of the Z outputs. B. The A input is connected to ground during the testing of the Y outputs and to VCC during the testing of the Z outputs. 8 3 HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 5 VOH – High-Level Output Voltage – V 2.5 Figure 10 HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 0 – 75 2 VI – Enable G Input Voltage – V Figure 9 4.5 1.5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS† LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 0.45 1 VCC = 5 V IOL= – 20 mA See Note A VOL – Low-Level Output Voltage – V VOL – Low-Level Output Voltage – V 0.5 0.4 0.35 0.3 0.25 0.2 0.15 0.1 TA = 25°C See Note A 0.9 VCC = 4.5 V 0.8 0.7 VCC = 5 V 0.6 0.5 0.4 VCC = 5.5 V 0.3 0.2 0.1 0.05 0 – 75 0 – 50 – 25 0 25 50 75 100 125 0 TA – Free-Air Temperature – °C 10 20 30 40 50 60 70 80 90 100 IOL – Low-Level Output Current – mA Figure 14 Figure 13 NOTE A: The A input is connected to GND during the testing of the Y outputs and to VCC during the testing of the Z outputs. SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY CURRENT vs SUPPLY VOLTAGE 40 80 Outputs Enabled No Load TA = 25°C A Inputs Open or Grounded Outputs Disabled No Load TA = 25°C 35 60 I CC – Supply Current – mA I CC – Supply Current – mA 70 50 Inputs Grounded 40 Inputs Open 30 20 30 25 20 15 10 5 10 0 0 0 1 2 3 4 5 6 VCC – Supply Voltage – V 7 8 0 1 2 3 4 5 6 7 8 VCC – Supply Voltage – V Figure 16 Figure 15 † Data for temperatures below 0°C and above 70°C are applicable to the SN55ALS194 circuits only. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 SN55ALS194, SN75ALS194 QUADRUPLE DIFFERENTIAL LINE DRIVERS SLLS009D – OCTOBER 1985 – REVISED MAY 1995 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs FREQUENCY 60 VCC = 5 V Input = 0 to 3 V Duty Cycle = 50% CL = 30 pF to All Outputs I CC – Supply Current – mA 50 40 30 20 10 0 10 k 100 k 1M 10 M f – Frequency – Hz Figure 17 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 100 M IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. 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