SN75179AP

         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 • • • • • • • • • • D OR P PACKAGE (TOP VIEW) Meets EIA Standards RS-422A, RS423A, and CCITT Recommendations V.11 and X.27 Bus Voltage Range . . . −7 V to 12 V Positive and Negative Current Limiting Driver Output Capability . . . 60 mA Max Driver Thermal Shutdown Protection Receiver Input Impedance . . . 12 kΩ Min Receiver Input Sensitivity . . . ± 200 mV Receiver Input Hysteresis . . . 50 mV Typ Operates From Single 5-V Supply Low Power Requirements VCC R D GND 1 8 2 7 3 6 4 5 A B Z Y NOT RECOMMENDED FOR NEW DESIGN logic symbol description R The SN75179A driver and bus receiver circuit is a monolithic integrated device designed for balanced transmission line applications, and meets EIA Standards RS-422A, RS-423A, and CCITT Recommendations V.11 and X.27. It is designed to improve the performance of data communications over long bus lines. D 8 2 7 6 3 5 A B Z Y logic diagram The SN75179A features positive- and negativecurrent limiting for the driver and receiver. The receiver features high input impedance, input hysteresis for increased noise immunity, and input sensitivity of ± 200 mV over a common-mode input voltage range of −12 V to 12 V. R D 8 2 7 6 3 5 A B Z Y The driver provides thermal shutdown for protection from line fault conditions. Thermal shutdown is designed to occur at a junction temperature of approximately 150°C. The device is designed to drive current loads of up to 60 mA maximum. The SN75179A is characterized for operation from 0°C to 70°C. Function Tables DRIVER INPUT D RECEIVER OUTPUTS Y Z H L H L H = high level, L H L = low level, DIFFERENTIAL INPUTS A−B OUTPUT R VID ≥ 0.2 V −0.2 V < VID < 0.2 V VID ≤ −0.2 V H ? L ? = indeterminate Copyright  1993, Texas Instruments Incorporated       !"   #!$% &"' &!   #" #" (" "  ") !" && *+' &! #", &"  ""%+ %!&" ",  %% #""' • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • 2−1 
         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 schematics of inputs and outputs EQUIVALENT DRIVER OR ENABLE INPUT TYPICAL OF ALL DRIVER OUTPUTS VCC VCC Req Input Output Driver input: Req = 3 kΩ NOM Enable inputs: Req = 8 kΩ NOM GND TYPICAL OF ALL RECEIVER OUTPUTS EQUIVALENT OF EACH RECEIVER INPUT VCC 85 Ω NOM VCC 960 Ω NOM Input 16.8 kΩ 960 Ω NOM NOM Output absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −10 V to 15 V Differential input voltage (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 V Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C 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. DISSIPATION RATING TABLE 2−2 PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING D 725 mW 5.8 mW/°C 464 mW P 1000 mW 8.0 mW/°C 640 mW • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • 
         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 recommended operating conditions Supply voltage, VCC High-level input voltage, VIH Driver Low-level input voltage, VIL Driver MIN NOM MAX UNIT 4.5 5 5.25 V 2 V −7 † Common-mode input voltage, VIC Differential input voltage, VID Driver High-level output current, IOH Receiver Driver Low-level output current, IOL 0.8 V 12 V ± 12 V −60 mA −400 µA 60 Receiver 8 mA Operating free-air temperature, TA 0 70 °C † The algebraic convention, where the less-positive (more-negative) limit is designated minimum, is used in this data sheet for common-mode input voltage and threshold voltage. DRIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER VIK Input clamp voltage VOH High-level output voltage VOL Low-level output voltage |VOD1| Differential output voltage |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 IIH Output current with power off IIL Low-level input current IOS High-level input current Short-circuit output current TEST CONDITIONS II = − 18 mA VIH = 2 V, IOH = − 33 mA VIH = 2 V, IOH = 33 mA MIN TYP‡ MAX UNIT −1.5 V VIL = 0.8 V, 3.7 V VIL = 0.8 V, 1.1 V IO = 0 RL = 100 Ω, 2 VOD2 See Figure 13 2 2.7 RL = 54 Ω, See Figure 13 1.5 2.4 V V ± 0.2 V 3 V ± 0.2 V ± 100 µA 20 µA VI = 0.4 V VO = − 7 V −400 µA VO = VCC VO = 12 V 250 RL = 54 Ω or 100 Ω, VCC = 0, VI = 2.4 V See FIgure 13 VO = − 7 V to 12 V −250 mA 500 ICC Supply current (total package) No load 50 mA ‡ All typical values are at VCC = 5 V and TA = 25°C. § ∆|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. ¶ In EIA Standard RS-422A, VOC, which is the average of the two output voltages with respect to ground, is called output offset voltage, VOS. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER tdD ttD Differential-output delay time Differential-output transition time TEST CONDITIONS RL = 60 Ω Ω, • See Figure 3 POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • MIN TYP MAX UNIT 40 60 ns 65 95 ns 2−3 
         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 RECEIVER SECTION electrical characteristics over recommended ranges of common-mode input voltage, supply voltage, and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS MIN VT+ VT− Positive-going threshold voltage Negative-going threshold voltage VO = 2.7 V, VO = 0.5 V, Vhys Hysteresis (VT+ − VT−) See Figure 9 VOH High-level output voltage VID = 200 mV, See Figure 2 IOH = − 400 µA, VOL Low-level output voltage VID = − 200 mV, IOL = 8 mA, VI = 12 V II Line input current ri Input resistance IO = − 0.4 mA IO = 8 mA TYP† MAX 0.2 −0.2‡ V V 50 Other input at 0 V, See Note 3 UNIT mV 2.7 V See Figure 2 0.45 V 1 VI = − 7 V −0.8 12 mA kΩ IOS Short-circuit output current −15 −85 mA ICC Supply current ( total package) No load 50 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ The algebraic convention, where the less-positive (more-negative) limit is designated minimum, is used in this data sheet for common-mode input voltage and threshold voltage levels only. NOTE 3: Refer to EIA Standard RS-422A for exact conditions. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER tPLH tPHL 2−4 TEST CONDITIONS Propagation delay time, low-to-high-level output Propagation delay time, high-to-low-level output VID = − 1.5 V to 1.5 V, See Figure 5 • CL = 15 pF, POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • MIN TYP MAX 26 35 UNIT ns 27 35 ns 
         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 PARAMETER MEASUREMENT INFORMATION RL 2 VOD2 RL 2 VID VOH VOC +IOL VOL Figure 1. Driver VOD and VOC −IOH Figure 2. Receiver VOH and VOL 3V Input CL Generator (see Note A) 50 Ω 1.5 V 1.5 V 0V RL = 60 Ω Output tdD tdD Output CL = 15 pF (see Note B) ≈ 2.5 V 50% 90% 50% 10% ≈ − 2.5 V ttD VOLTAGE WAVEFORMS ttD TEST CIRCUIT Figure 3. Driver Differential-Output Delay and Transition Times 3V Input 2.3 V 1.5 V 1.5 V 0V RL = 27 Ω S1 Output Generator (see Note A) 50 Ω tPLH tPHL VOH Y Output 2.3 V VOL CL = 50 pF (see Note B) tPHL tPLH VOH 2.3 V Z Output VOL TEST CIRCUIT VOLTAGE WAVEFORMS Figure 4. Driver Test Circuit and Voltage Waveforms 3V Input Generator (see Note A) 1.5 V 1.5 V 0V 50 Ω Output 1.5 V CL = 15 pF (see Note B) tPHL tPLH 1.3 V Output TEST CIRCUIT VOH 1.3 V VOL VOLTAGE WAVEFORMS Figure 5. Receiver Test Circuit and 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 Ω. B. CL includes probe and jig capacitance. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • 2−5 
         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 TYPICAL CHARACTERISTICS DRIVER HIGH-LEVEL OUTPUT VOLTAGE vs DRIVER HIGH-LEVEL OUTPUT CURRENT DRIVER LOW-LEVEL OUTPUT VOLTAGE vs DRIVER LOW-LEVEL OUTPUT CURRENT 5 VCC = 5 V TA = 25°C 4.5 VCC = 5 V TA = 25°C 4.5 VOL − Low-Level Output Voltage − V VOH − High-Level Output Voltage − V 5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5 2 1.5 1 0.5 0.5 0 0 0 −20 −40 −60 −80 −100 0 −120 20 40 Figure 6 100 120 Figure 7 DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs DRIVER OUTPUT CURRENT RECEIVER OUTPUT VOLTAGE vs DIFFERENTIAL INPUT VOLTAGE 4 5 IO = 0 TA = 25°C VIC = −12 V VIC = 0V VIC = 12 V VT− VT+ VT− VT− VT+ VCC = 5 V VCC = 5 V TA = 25°C 3.5 4 VO V O − Output Voltage − V VOD V DD − Differential Output Voltage − V 80 IOH − Low-Level Output Current − mA IOH − High-Level Output Current − mA 3 2.5 2 1.5 ÁÁ ÁÁ ÁÁ 3 VT+ 2 1 1 0.5 0 0 10 20 30 40 50 60 70 80 0 −125 −100 −75 −50 −25 90 100 IO − Output Current − mA 0 25 50 75 100 125 VID − Differential Input Voltage − mV Figure 8 2−6 60 Figure 9 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • 
         SLLS123B − D2845, JUNE 1984 − REVISED FEBRUARY 1993 TYPICAL CHARACTERISTICS RECEIVER HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT RECEIVER HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 5 VID = 0.2 V TA = 25°C VOH − High-Level Output Voltage − V VOH − High-Level Output Voltage − V 5 4 3 VCC = 5.25 V 2 VCC = 5 V VCC = 4.75 V 1 VCC = 5 V VID = 0.2 V IOH = − 440 µA 4 3 2 1 0 0 0 −10 −20 −30 −40 10 0 −50 20 30 Figure 10 50 60 70 80 Figure 11 RECEIVER LOW-LEVEL OUTPUT VOLTAGE vs RECEIVER LOW-LEVEL OUTPUT CURRENT RECEIVER LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 0.6 0.6 VOL− Low-Level Output Voltage − V VCC = 5 V TA = 25°C VOL− Low-Level Output Voltage − V 40 TA − Free-Air Temperature − °C IOH − High-Level Output Current − mA 0.5 0.4 0.3 0.2 0.1 0.5 ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ VCC = 5 V VID = − 200 mV IOL = 8 mA 0.4 0.3 0.2 0.1 0 0 0 5 10 15 20 25 0 30 10 20 30 40 50 60 70 80 TA − Free-Air Temperature − °C IOL − Low-Level Output Current − mA Figure 12 Figure 13 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • 2−7 PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) SN75179AP OBSOLETE Package Type Package Pins Package Drawing Qty PDIP P 8 Eco Plan Lead/Ball Finish (2) TBD MSL Peak Temp Op Temp (°C) Top-Side Markings (3) Call TI Call TI (4) 0 to 70 (1) The marketing status values are defined 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 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) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead 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) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the 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 free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. 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