SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 D D D D D D D Meet or Exceed EIA Standard RS-485 Designed for High-Speed Multipoint Transmission on Long Bus Lines in Noisy Environments Support Data Rates up to and Exceeding Ten Million Transfers Per Second Common-Mode Output Voltage Range of – 7 V to 12 V Positive- and Negative-Current Limiting Low Power Consumption . . . 1.5 mA Max (Output Disabled) Functionally Interchangeable With SN75172 N PACKAGE (TOP VIEW) 1A 1Y 1Z G 2Z 2Y 2A GND 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC 4A 4Y 4Z G 3Z 3Y 3A DW PACKAGE (TOP VIEW) description 1A 1Y NC 1Z G 2Z NC 2Y 2A GND The SN65LBC172 and SN75LBC172 are monolithic quadruple differential line drivers with 3-state outputs. Both devices are designed to meet the requirements of EIA Standard RS-485. These devices are optimized for balanced multipoint bus transmission at data rates up to and exceeding 10 million bits per second. Each driver features wide positive and negative commonmode output voltage ranges, current limiting, and thermal-shutdown circuitry making it suitable for party-line applications in noisy environments. Both devices are designed using LinBiCMOS, facilitating ultra-low power consumption and inherent robustness. Both the SN65LBC172 and SN75LBC172 provide positive- and negative-current limiting and thermal shutdown for protection from line fault conditions on the transmission bus line. These devices offer optimum performance when used with the SN75LBC173 or SN75LBC175 quadruple line receivers. The SN65LBC172 and SN75LBC172 are available in the 16-pin DIP package (N) and the 20-pin wide-body smalloutline inline-circuit (SOIC) package (DW). 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 4A 4Y NC 4Z G 3Z NC 3Y 3A NC – No internal connection FUNCTION TABLE (each driver) INPUT A ENABLES G G OUTPUTS Y Z H X H L H H X L H L X L H L H X L L H L L H Z Z X H = high level, L = low level, X = irrelevant, Z = high impedance (off) The SN75LBC172 is characterized for operation over the commercial temperature range of 0°C to 70°C. The SN65LBC172 is characterized over the industrial temperature range of – 40°C to 85°C. 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. LinBiCMOS is a trademark of Texas Instruments Incorporated. Copyright 2000, 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 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 logic symbol† G G 1A 2A 3A 4A 4 12 logic diagram (positive logic) G ≥1 G EN 2 1 3 6 7 5 10 9 11 14 15 13 1A 1Y 4 12 2 1 3 1Z 2Y 2A 2Z 6 7 5 3Y 3Z 3A 4Y 10 9 11 4Z † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the N package. 4A 14 15 13 1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z schematic diagrams of inputs and outputs ALL INPUTS Y OR Z OUTPUT VCC VCC 50 µA 200 Ω Output Input Driver 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to 7 V Output voltage range, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 10 V to 15 V Voltage range at A, G, G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCC + 0.5 V Continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited‡ Operating free-air temperature range, TA: SN65LBC172 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C SN75LBC172 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead 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, 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. ‡ The maximum operating junction temperature is internally limited. Use the dissipation rating table to operate below this temperature. NOTE 1: All voltage values are with respect to GND. recommended operating conditions Supply voltage, VCC High-level input voltage, VIH MIN NOM MAX UNIT 4.75 5 5.25 V 2 Low-level input voltage, VIL V 0.8 Voltage at any bus terminal (separately or common mode), mode) VO Y or Z High-level output current, IOH Y or Z Low-level output current, IOL Y or Z 12 –7 Continuous total power dissipation V V –60 mA 60 mA See Dissipation Rating Table Operating free-air free air temperature, temperature TA SN65LBC172 –40 85 SN75LBC172 0 70 °C DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING DW 1125 mW 9.0 mW/°C 720 mW 585 mW N 1150 mW 9.2 mW/°C 736 mW 598 mW POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER VIK TEST CONDITIONS Input clamp voltage MIN TYP† II = – 18 mA |VOD| Differential output voltage‡ ∆|VOD| Change in magnitude of common-mode output voltage§ VOC Common mode output voltage Common-mode ∆|VOC| Change in magnitude of common-mode output voltage§ IO IOZ Output current with power off IIH IIL High-level input current IOS Short-circuit output current ICC Supply current (all drivers) Low-level input current UNIT – 1.5 V RL = 54 Ω,, See Figure 1 SN65LBC172 1.1 1.8 5 SN75LBC172 1.5 1.8 5 RL = 60 Ω,, See Figure 2 SN65LBC172 1.1 1.7 5 SN75LBC172 1.5 1.7 RL = 54 Ω Ω, High-impedance-state output current MAX See Figure 1 V 5 ± 0.2 V 3 –1 V ± 0.2 V VCC = 0, VO = – 7 V to 12 V VO = – 7 V to 12 V ± 100 µA ± 100 µA VI = 2.4 V VI = 0.4 V – 100 µA – 100 µA VO = – 7 V to 12 V Outputs enabled No load Outputs disabled ± 250 mA 7 1.5 mA † All typical values are at VCC = 5 V and TA = 25°C. ‡ The minimum VOD specification does not fully comply with EIA-485 at operating temperatures below 0°C. The lower output signal should be used to determine the maximum signal-transmission distance. § ∆|VOD| and ∆|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input changes from a high level to a low level. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER td(OD) tt(OD) Differential output delay time tPZH tPZL tPHZ tPLZ 4 TEST CONDITIONS MIN TYP MAX UNIT 2 11 20 ns 10 15 25 ns RL = 54 Ω Ω, See Figure 3 Output enable time to high level RL = 110 Ω, See Figure 4 30 ns Output enable time to low level RL = 110 Ω, See Figure 5 30 ns Output disable time from high level RL = 110 Ω, See Figure 4 50 ns Output disable time from low level RL = 110 Ω, See Figure 5 30 ns Differential output transition time POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 PARAMETER MEASUREMENT INFORMATION RL 2 VOD2 RL 2 VOC Figure 1. Differential and Common-Mode Output Voltages Vtest R1 = 375 Ω Y 0 V or 3 V A RL = 60 Ω VOD Z G at 5 V or G at 0 V R2 = 375 Ω Vtest – 7 V < Vtest < 12 V NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle = 50%, tr ≤ 5 ns, tf ≤ 5 ns, ZO = 50 Ω. B. CL includes probe and stray capacitance. Figure 2. Driver VOD Test Circuit 3V Input Input Generator (see Note A) RL = 54 Ω CL = 50 pF (see Note B) 50 Ω 1.5 V 1.5 V 0V Output td(OD) Output td(OD) 50% 90% ≈ 2.5 V 50% 10% 3V tt(OD) ≈ – 2.5 V tt(OD) VOLTAGE WAVEFORMS TEST CIRCUIT NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle = 50%, tr ≤ 5 ns, tf ≤ 5 ns, ZO = 50 Ω. B. CL includes probe and stray capacitance. Figure 3. Driver Differential-Output Test Circuit and Delay and Transition-Time Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 PARAMETER MEASUREMENT INFORMATION 3V Input 1.5 V S1 1.5 V Output 0 V or 3 V 0V Input Generator (see Note A) 0.5 V CL = 50 pF (see Note B) 50 Ω RL = 110 Ω tPZH VOH Output 2.3 V Voff ≈ 0 V tPHZ TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle = 50%, tr ≤ 5 ns, tf ≤ 5 ns, ZO = 50 Ω. B. CL includes probe and stray capacitance. Figure 4. tPZH and tPHZ Test Circuit and Voltage Waveforms 5V RL = 110 Ω S1 Output 3V Input 1.5 V 1.5 V 0V 0 V or 3 V Generator (see Note A) 50 Ω tPZL CL = 50 pF (see Note B) Input tPLZ 2.3 V Output 5V 0.5 V VOL 3V (see Note C) TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, duty cycle = 50%, tr ≤ 5 ns, tf ≤ 5 ns, ZO = 50 Ω. B. CL includes probe and stray capacitance. C. To test the active-low enable G, ground G and apply an inverted waveform to G. Figure 5. tPZL and tPLZ Test Circuit and Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 TYPICAL CHARACTERISTICS OUTPUT CURRENT vs OUTPUT VOLTAGE LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 50 5 Output Disabled TA = 25°C 4.5 VOL – Low-Level Output Voltage – V 40 IIO O – Output Current – µA 30 20 10 0 ÁÁ ÁÁ ÁÁ – 10 VCC = 0 V – 20 – 30 VCC = 5 V – 40 VCC = 5 V TA = 25°C 4 3.5 3 2.5 2 1.5 1 0.5 – 50 – 25 – 20 – 15 – 10 – 5 0 5 10 15 20 0 – 20 25 60 80 20 40 100 0 IOL – Low-Level Output Current – mA VO – Output Voltage – V Figure 6 Figure 7 DIFFERENTIAL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 5 RL = 54 Ω VCC = 5 V VOH – High-Level Output Voltage – V VOD – Differential Output Voltage – V 3 2.5 2 1.5 1 ÁÁ ÁÁ 0.5 0 – 60 120 VCC = 5 V TA = 25°C 4.5 4 3.5 3 2.5 2 1.5 – 40 – 20 0 20 40 60 80 100 TA – Free-Air Temperature – °C 20 0 – 20 – 40 – 60 – 80 – 100 – 120 IOH – High-Level Output Current – mA Figure 8 Figure 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 TYPICAL CHARACTERISTICS PROPAGATION DELAY TIME, DIFFERENTIAL OUTPUT vs FREE-AIR TEMPERATURE V OD – Differential Output Voltage – V 3 VCC = 5 V TA = 25°C 2.5 2 1.5 1 0.5 0 0 10 20 30 40 50 60 70 80 90 100 IO – Output Current – mA t pd(DO)– Propagation Delay Time, Differential Output – ns DIFFERENTIAL OUTPUT VOLTAGE vs OUTPUT CURRENT 14 RL = 54 Ω CL = 50 pF VCC = 5 V 13 12 11 10 9 8 7 6 5 4 – 60 – 40 – 20 20 Figure 11 Figure 10 8 0 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 40 60 TA – Free-Air Temperature – °C 80 100 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 MECHANICAL DATA DW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 16 PIN SHOWN 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 16 0.010 (0,25) M 9 0.419 (10,65) 0.400 (10,15) 0.010 (0,25) NOM 0.299 (7,59) 0.293 (7,45) Gage Plane 0.010 (0,25) 1 8 0°– 8° A 0.050 (1,27) 0.016 (0,40) Seating Plane 0.104 (2,65) MAX 0.012 (0,30) 0.004 (0,10) 0.004 (0,10) PINS ** 16 20 24 A MAX 0.410 (10,41) 0.510 (12,95) 0.610 (15,49) A MIN 0.400 (10,16) 0.500 (12,70) 0.600 (15,24) DIM 4040000 / D 02/98 NOTES: A. B. C. D. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15). Falls within JEDEC MS-013 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 SN65LBC172, SN75LBC172 QUADRUPLE LOW-POWER DIFFERENTIAL LINE DRIVER SLLS163B – JULY 1993 – REVISED JANUARY 2000 MECHANICAL DATA N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 16 PIN SHOWN PINS ** 14 16 18 20 A MAX 0.775 (19,69) 0.775 (19,69) 0.920 (23.37) 0.975 (24,77) A MIN 0.745 (18,92) 0.745 (18,92) 0.850 (21.59) 0.940 (23,88) DIM A 16 9 0.260 (6,60) 0.240 (6,10) 1 8 0.070 (1,78) MAX 0.035 (0,89) MAX 0.310 (7,87) 0.290 (7,37) 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.010 (0,25) M 0°– 15° 0.010 (0,25) NOM 14/18 PIN ONLY 4040049/C 08/95 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 (20 pin package is shorter then MS-001.) 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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