SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 D D D D D D D D High-Speed Low-Power LinBiCMOS Circuitry Designed for Signaling Rates of up to 30 Mbps Bus-Pin ESD Protection Exceeds 12 kV HBM Very Low Disabled Supply-Current Requirements . . . 700 A Max Common-Mode Voltage Range of - 7 V to 12 V Low Supply Current . . . 15 mA Max Compatible With ANSI Standard TIA/EAI-485-A and ISO8482: 1987(E) Positive and Negative Output Current Limiting Driver Thermal Shutdown Protection SN65LBC179AD (Marked as BL179A) SN65LBC179AP (Marked as 65LBC179A) SN75LBC179AD (Marked as LB179A) SN75LBC179AP (Marked as 75LBC179A) (TOP VIEW) VCC R D GND 8 2 7 3 6 4 5 A B Z Y logic diagram (positive logic) R D description The SN65LBC179A and SN75LBC179A differential driver and receiver pairs are monolithic integrated circuits designed for bidirectional data communication over long cables that take on the characteristics of transmission lines. They are balanced, or differential, voltage mode devices that are compatible with ANSI standard TIA/EIA-485-A and ISO 8482:1987(E). The A version offers improved switching performance over its predecessors without sacrificing significantly more power. 1 8 2 7 5 3 6 A B Y Z Function Tables DRIVER INPUT D H L Open OUTPUTS Y Z H L H L H L RECEIVER DIFFERENTIAL INPUTS OUTPUT R A-B The SN65LBC179A and SN75LBC179A combine H VID 0.2 V a differential line driver and differential input line ? - 0.2 V < VID < 0.2 V receiver and operate from a single 5-V supply. The L VID - 0.2 V driver differential outputs and the receiver H Open circuit differential inputs are connected to separate H = high level, L = low level, terminals for full-duplex operation and are ? = indeterminate designed to present minimum loading to the bus when powered off (VCC = 0). These parts feature a wide positive and negative common-mode voltage range making them suitable for point-to-point or multipoint data bus applications. The devices also provide positiveand negative-current limiting and thermal shutdown for protection from line fault conditions. The SN65LBC179A is characterized over the industrial temperature range of - 40C to 85C. The SN75LBC179A is characterized for operation over the commercial temperature range of 0C to 70C. 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. Signaling rate by TIA/EIA-485-A definition restrict transition times to 30% of the bit length, and much higher signaling rates may be achieved without this requirement as displayed in the TYPICAL CHARACTERISTICS of this device. LinBiCMOS is a trademark of Texas Instruments. Copyright 2001, 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 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 AVAILABLE OPTIONS PACKAGE TA SMALL OUTLINE (D) PLASTIC DUAL-IN-LINE 0C to 70C SN75LBC179AD SN75LBC179AP - 40C to 85C SN65LBC179AD SN65LBC179AP schematics of inputs and outputs D Inputs VCC 100 k 1 k Input 8V A Input B Input VCC 16 V 100 k VCC 16 V 4 k 4 k 18 k 18 k Input Input 100 k 16 V 16 V 4 k 4 k Y AND Z Outputs VCC R Output VCC 16 V Receiver 40 Output Output 8V 16 V Receiver 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 absolute maximum ratings Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 V to 6 V Voltage range at A, B, Y, or Z (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 10 V to 15 V Voltage range at D or R (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 V to VCC + 0.5 V Electrostatic discharge: Bus terminals and GND, Class 3, A: (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . 12 kV Bus terminals and GND, Class 3, B: (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . 400 V All terminals, Class 3, A: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 kV All terminals, Class 3, B: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400 V Continuous total power dissipation (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited Total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C 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. NOTES: 1. All voltage values, except differential I/O bus voltages, are with respect to GND. 2. Tested in accordance with MIL-STD-883C, Method 3015.7 3. The maximum operating junction temperature is internally limited. Uses the dissipation rating table to operate below this temperature. DISSIPATION RATING TABLE PACKAGE TA 25C POWER RATING DERATING FACTOR ABOVE TA = 25C TA = 70C POWER RATING TA = 85C POWER RATING 377 mW D 725 mW 5.8 mW/C 464 mW P 1100 mW 8.08 mW/C 640 mW 520 mW This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow. recommended operating conditions Supply voltage, VCC MIN NOM MAX UNIT 4.75 5 5.25 V VCC 0.8 V 12 V 12 V High-level input voltage, VIH D 2 Low-level input voltage, VIL D 0 - 12 Differential input voltage, VID (see Note 4) Voltage at any bus terminal (separately or common-mode), VO, VI, or VIC A, B, Y, or Z Y or Z High level output current, High-level current IOH R -7 -60 60 R free air temperature, temperature TA Operating free-air mA -8 Y or Z Low level output current Low-level current, IOL V 8 SN65LBC179A - 40 85 SN75LBC179A 0 70 mA C The algebraic convention, in which the least positive (most negative) limit is designated as minimum, is used in this data sheet. NOTE 4: Differential input/output bus voltage is measured at the noninverting terminal with respect to the inverting terminal. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 driver electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER VIK TEST CONDITIONS Input clamp voltage | VOD | II = - 18 mA Differential output voltage | VOD | Change in magnitude of differential output voltage (see Note 5) VOC(SS) Steady-state common-mode output voltage -0.8 MAX 1 1.5 3 SN75LBC179A 1.1 1.5 3 RL = 60 , -7 7 <V((tot)) < 12 12, See Figure 2 SN65LBC179A 1 1.5 3 SN75LBC179A 1.1 1.5 3 See Figures 1 and 2 -0.2 1.8 Change in steady-state common-mode output voltage (see Note 5) IO IIH Output current with power off VCC = 0, VI = 2.V IIL IOS Low-level input current 2.4 -0.1 VO = - 7 V to 12 V VI = 0.8 V - 7 V VO 12 V -10 1 UNIT V SN65LBC179A VOC (SS) Short-circuit output current TYP RL = 54 ,, See Figure 1 See Figure 1 High-level input current MIN -1.5 V 0.2 V 2.8 V 0.1 V 10 A - 100 A - 100 A -250 70 250 mA ICC Supply current No load, VI = 0 or VCC 8.5 15 mA All typical values are at VCC = 5 V, TA = 25C. NOTE 5: | VOD | and | VOC | are the changes in the steady-state magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low level. driver switching characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH tPHL Propagation delay time, low-to-high-level output 2 6 12 ns Propagation delay time, high-to-low-level output 2 6 12 ns tsk(p) tr Pulse skew ( | tPHL - tPLH | ) 0.3 1 ns Differential output signal rise time 4 7.5 11 ns tf Differential output signal fall time 4 7.5 11 ns 4 POST OFFICE BOX 655303 RL = 54 , See Figure 3 * DALLAS, TEXAS 75265 CL = 50 pF, F SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 RECEIVER SECTION receiver electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS VIT + VIT - Positive-going input threshold voltage Vhys VOH Hysteresis voltage ( VIT + - VIT -) VOL Low-level output voltage II MIN TYP IO = - 8 mA Negative-going input threshold voltage 0.2 - 0.2 IO = 8 mA High-level output voltage 50 VID = 200 mV, IOH = - 8 mA, See Figure 1 VID = - 200 mV, IOL = 8 mA, See Figure 1 VIH = 12 V, VIH = 12 V, Bus input current MAX 4 4.9 V 0.8 VCC = 5 V 0.4 1 VCC = 0 0.5 1 Other input at 0 V VCC = 5 V VCC = 0 -0.8 - 0.4 -0.8 - 0.3 V mV 0.1 VIH = - 7 V, VIH = - 7 V, UNIT V mA receiver switching characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS tPLH tPHL Propagation delay time, low-to-high-level output tsk(p) tr Pulse skew ( | tPLH - tPHL | ) tf Fall time, output Propagation delay time, high-to-low-level output Rise time, output VID = -1.5 V to 1.5 V, See Figure 4 See Figure 4 MIN TYP MAX UNIT 7 13 20 ns 7 13 20 ns 0.5 1.5 ns 2.1 3.3 ns 2.1 3.3 ns PARAMETER MEASUREMENT INFORMATION Y 27 D VOD 0 V or 3 V 27 VOC Z Figure 1. Driver VOD and VOC POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 PARAMETER MEASUREMENT INFORMATION V(test ) R1 375 Y D RL = 60 0 V or 3 V VOD Z R2 375 - 7 V < V(test) < 12 V V(test ) Figure 2. Driver VOD With Common-Mode Loading 3V Input Generator (see Note A) RL = 54 50 1.5 V CL = 50 pF (see Note B) 1.5 V 0V tPLH Output tPHL 50% Output 1.5 V 50% 90% 10% - 1.5 V tf VOLTAGE WAVEFORMS tr TEST CIRCUIT 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. CL includes probe and jig capacitance. Figure 3. Driver Test Circuits and Voltage Waveforms 3V Input 1.5 V A Generator (see Note A) 50 1.5 V 0V Output B tPLH tPHL 1.5 V CL = 15 pF (see Note B) Output 90% 1.3 V 10% tr TEST CIRCUIT VOH 90% 1.3 V 10% VOL tf VOLTAGE WAVEFORMS 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. CL includes probe and jig capacitance. Figure 4. Receiver Test Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 TYPICAL CHARACTERISTICS Receiver Output Driver Input 120 120 Driver Input Receiver Output Figure 5. Typical Waveform of Non-Return-To-Zero (NRZ), Pseudorandom Binary Sequence (PRBS) Data at 100 Mbps Through 15m, of CAT 5 Unshielded Twisted Pair (UTP) Cable TIA/EIA-485-A defines a maximum signaling rate as that in which the transition time of the voltage transition of a logic-state change remains less than or equal to 30% of the bit length. Transition times of greater length perform quite well even though they do not meet the standard by definition. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 TYPICAL CHARACTERISTICS LOGIC INPUT CURRENT vs INPUT VOLTAGE AVERAGE SUPPLY CURRENT vs FREQUENCY -30 45 Driver -25 35 II - Logic Input Current - A I CC - Average Supply Current - mA 40 30 25 20 15 Receiver 10 -20 -15 -10 -5 5 0 0.05 0.5 1 2 5 10 20 0 30 0 1 2 Figure 6 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 800 2.00 600 1.75 VOL - Low-Level Output Voltage - V II - Input Current - A 5 Figure 7 INPUT CURRENT vs INPUT VOLTAGE 400 200 0 -200 Bus Input Current -400 1.50 VCC = 5 1.25 1.00 0.75 0.50 0.25 -600 0 -8 -6 -4 -2 0 2 4 6 8 10 12 VI - Input Voltage - V 0 10 20 30 40 50 60 70 IOL - Low-Level Output Current - mA Figure 8 8 4 3 VI - Input Voltage - V f - Frequency - MHz Figure 9 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 80 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 TYPICAL CHARACTERISTICS DRIVER HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs AVERAGE CASE TEMPERATURE 2 VOD - Driver Differential Output Voltage - V VOH - Driver High-Level Output Voltage - V 5 4.5 4 VCC = 5.25 V 3.5 3 2.5 VCC = 5 V 2 VCC = 4.75 V 1.5 1 0.5 0 1.5 1 0.5 0 0 -10 -20 -30 -40 -50 -60 -70 -80 -40 0 25 Figure 10 DRIVER PROPAGATION DELAY TIME vs CASE TEMPERATURE 13.8 7.4 TPHL - Driver Propagation Delay Time - ns 13.7 T PHL - Receiver Propagation Time - ns 85 Figure 11 RECEIVER PROPAGATION TIME vs CASE TEMPERATURE 13.6 13.5 13.4 13.3 13.2 13.1 13 12.9 -40 70 Average Case Temperature - C IOH - High-Level Output Current - (mA) 0 25 70 80 Case Temperature C 7.2 7 6.8 6.6 6.4 6.2 6 5.8 5.6 -40 0 25 70 85 Case Temperature - C Figure 12 Figure 13 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 TYPICAL CHARACTERISTICS DRIVER OUTPUT CURRENT vs SUPPLY VOLTAGE 90 IO - Driver Output Current - mA 65 40 15 IOH -10 -35 -60 -85 -110 -135 IOL -160 -185 -210 0 3 5 4 VCC - Supply Voltage - V Figure 14 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 6 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 MECHANICAL INFORMATION D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 14 0.010 (0,25) M 8 0.008 (0,20) NOM 0.244 (6,20) 0.228 (5,80) 0.157 (4,00) 0.150 (3,81) Gage Plane 0.010 (0,25) 1 7 0- 8 A 0.044 (1,12) 0.016 (0,40) Seating Plane 0.069 (1,75) MAX 0.010 (0,25) 0.004 (0,10) PINS ** 0.004 (0,10) 8 14 16 A MAX 0.197 (5,00) 0.344 (8,75) 0.394 (10,00) A MIN 0.189 (4,80) 0.337 (8,55) 0.386 (9,80) DIM 4040047 / D 10/96 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-012 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 SN65LBC179A, SN75LBC179A LOW-POWER DIFFERENTIAL LINE DRIVER AND RECEIVER PAIRS SLLS377C - MAY 2000 - REVISED JUNE 2001 MECHANICAL INFORMATION P (R-PDIP-T8) PLASTIC DUAL-IN-LINE 0.400 (10,60) 0.355 (9,02) 8 5 0.260 (6,60) 0.240 (6,10) 1 4 0.070 (1,78) MAX 0.325 (8,26) 0.300 (7,62) 0.020 (0,51) MIN 0.015 (0,38) Gage Plane 0.200 (5,08) MAX Seating Plane 0.010 (0,25) NOM 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.430 (10,92) MAX 0.010 (0,25) M 4040082/D 05/98 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm 12 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. 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