SN75179BDRG4

SN75179B SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 SN75179B Differential Driver and Receiver Pair 1 Features 2 Description • The SN75179B is a differential driver and receiver pair designed for balanced transmission-line applications and meets TIA/EIA-422-B, TIA/EIA-485A, and ITU Recommendation V.11. The device is designed to improve the performance of full-duplex data communications over long bus lines. • • • • • • • • • Meets or exceeds the requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11 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 The SN75179B driver output provides limiting for both positive and negative currents. 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 –7 V to 12 V. 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 SN75179B is designed to drive current loads of up to 60 mA maximum. The SN75179B is characterized for operation from 0°C to 70°C. Package Information PART NUMBER SN75179B (1) A. This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Logic Symbol PACKAGE(1) BODY SIZE (NOM) D (SOIC) 4.9 mm x 3.91 mm P (PDIP) 9.81 mm x 9.43 mm PS (SOP) 6.2 mm x 5.3 mm For all available packages, see the orderable addendum at the end of the data sheet. Logic Diagram (Positive Logic) An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 Table of Contents 1 Features............................................................................1 2 Description.......................................................................1 3 Revision History.............................................................. 2 4 Pin Configuration and Functions...................................3 5 Specifications.................................................................. 4 5.1 Absolute Maximum Ratings........................................ 4 5.2 Recommended Operating Conditions.........................4 5.3 Thermal Information....................................................4 5.4 Electrical Characteristics: Driver................................. 5 5.5 Switching Characteristics............................................5 5.6 Symbol Equivalent...................................................... 5 5.7 Electrical Characteristics: Receiver............................ 6 5.8 Switching Characteristics ...........................................6 5.9 Typical Characteristics................................................ 7 6 Parameter Measurement Information............................ 9 7 Detailed Description......................................................10 7.1 Functional Block Diagram......................................... 10 7.2 Device Functional Modes..........................................11 8 Device and Documentation Support............................12 8.1 Documentation Support............................................ 12 8.2 Receiving Notification of Documentation Updates....12 8.3 Support Resources................................................... 12 8.4 Trademarks............................................................... 12 8.5 Electrostatic Discharge Caution................................12 8.6 Glossary....................................................................12 9 Mechanical, Packaging, and Orderable Information.. 12 3 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision E (June 2008) to Revision F (October 2022) Page • Changed the data sheet format to the latest data sheet format..........................................................................1 • Changed the Thermal Information table............................................................................................................. 4 2 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 4 Pin Configuration and Functions Figure 4-1. D, PS, or P Package Top View Table 4-1. Pin Functions PIN NAME NO. TYPE(1) DESCRIPTION 1 VCC P 5V Voltage Supply 2 R O RS485 Logic Output 3 D I RS485 Logic Input 4 GND G Ground 5 Y O Non-Inverting RS485 Bus Output 6 Z O Inverted RS485 Bus Output 7 B I Inverted RS485 Bus Input 8 A I Non-Inverting RS485 Bus Input (1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B 3 SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 5 Specifications 5.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) MIN Supply voltage(2) VCC Voltage range at any bus terminal VID Differential input voltage (3) Tstg Storage temperature (1) (2) (3) –10 –65 MAX UNIT 7 V 15 V ±25 V 150 °C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltage values are with respect to network ground terminal. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input. 5.2 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) VCC Supply voltage VIH High-level input voltage Driver VIL Low-level input voltage Driver VIC Common-mode input voltage VID Differential input voltage, IOH High level output current IOL Low level output current TA Operating free-air temperature (1) MIN NOM MAX UNIT 4.75 5 5.25 V 2 V –7(1) 0.8 V 12 V ±12 V Driver –602 mA Receiver –400 µA 60 mA 8 mA 70 °C Driver Receiver 0 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. 5.3 Thermal Information THERMAL METRIC(1) PDIP (P) SOP (PS) 8 PINS 8 PINS 8 PINS RθJA Junction-to-ambient thermal resistance 116.7 109.5 84.3 RθJC(top) Junction-to-case (top) thermal resistance 56.3 53.9 65.4 RθJB Junction-to-board thermal resistance 63.4 65.7 62.1 ψJT Junction-to-top characterization parameter 8.8 11.6 31.3 ψJB Junction-to-board characterization parameter 62.6 64.5 60.4 RθJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A N/A (1) 4 SOIC (D) UNIT °C/W For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 5.4 Electrical Characteristics: Driver over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS VIK Input clamp voltage II = –18 mA VO Output voltage IO = 0 |VOD1| Differential output voltage IO = 0 |VOD2| |VOD3| Differential output voltage Differential output voltage MIN RL = 100 Ω See Figure 6-1 RL = 54 Ω See Figure 6-1 See TYP(1) –1.5 V 0 6 V 1.5 6 V V 2(2) 1.5 2.5 Δ|VOC| Change in magnitude of common-mode output voltage(3) IO Output current VCC = 0 IIH High-level input current IIL Low-level input current IOS Short circuit output current ICC Supply current (total package) RL = 54 Ω or 100 Ω, (4) V 5 V ±0.2 V 3 See Figure 6-1 –1 V ±0.2 V ±100 µA VIH = 2.4 V 20 µA VIL = 0.4 V –200 µA VO = –7 V –250 VO = VCC 250 VO = -7 V to 12 V VO = 12 V (1) (2) (3) 5 1.5 Δ|VOD| Change in magnitude of differential output voltage Common mode output voltage UNIT 1/2 VOD1 (4) VOC MAX mA 250 No load 57 70 mA All typical values are at VCC = 5 V and TA = 25°C. The minimum VOD2 with 100-Ω load is either 1/2 VOD2 or 2 V, whichever is greater Δ|VOD| and Δ|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. See TIA/EIA-485-A, Figure 3.5, Test Termination Measurement 2. 5.5 Switching Characteristics VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT td(OD) Differential output delay time RL = 54 Ω , See Figure 6-3 15 22 ns tt(OD) Differential output transition time RL = 54 Ω , See Figure 6-3 20 30 ns 5.6 Symbol Equivalent DATA-SHEET PARAMETER VO TIA/EIA-422-B TIA/EIA-485-A Voa, Vob Voa, Vob | VOD1 | Vo Vo | VOD2 | Vt(RL = 100 Ω) Vt(RL = 54 Ω) | VOD3 | D | VOD | VOC D | VOC | Vt (Test Termination Measurement 2) || Vt|– |Vtt | || Vt|– |V t| | | Vos | | Vos | | Vos – Vos | | Vos – V os | IOS |Isa|, | Isb| IO |Ixa|, | Ixb| Iia, Iib Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B 5 SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 5.7 Electrical Characteristics: Receiver over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER MIN TYP(1) TEST CONDITIONS VIT+ Positive-going input threshold voltage VO = 2.7 V IO = –0.4 mA VIT- Negative-going input threshold voltage VO = 0.5 V IO = 8 mA Vhys| Hysteresis voltage (VIT+ – VIT– ) VOH High-level output voltage VID = 200 mV IOH = -400 µA See Figure 6-2 VOL Low-level output voltage VID = -200 mV IOL = 8 mA See Figure 6-2 II Line input current rI Input resistance IOS Short-circuit output current IOS Supply current (total package) (1) (2) (3) MAX UNIT 0.2 –0.2(2) V 50 Other input at 0 V See (3) mV 2.7 V 0.45 VI = 12 V VI = –7 V V 1 mA –0.8 mA 12 kΩ –15 No load V 57 –85 mA 70 mA All typical values are at VCC = 5 V and 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. See TIA/EIA-422-B for exact conditions. 5.8 Switching Characteristics VCC = 5 V, TA = 25°C PARAMETER 6 TEST CONDITIONS tPLH Propagation delay time, low- to high-level output VID = –1.5 V to 1.5 V tPHL Propagation delay time, high- to low-level output CL = 15 pF Submit Document Feedback MIN See Figure 6-4 TYP MAX UNIT 19 35 ns 30 40 ns Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 5.9 Typical Characteristics Figure 5-1. Driver High-Level Output Voltage vs High-Level Output Current Figure 5-2. Driver Low-Level Output Voltage vs Low-Level Output Current Figure 5-3. Driver Differential Output Voltage vs Output Current Figure 5-4. Receiver Output Voltage vs Differential Input Voltage Figure 5-5. High-Level Output Voltage vs High-Level Output Current Figure 5-6. High-Level Output Voltage vs Free-Air Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B 7 SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 5.9 Typical Characteristics (continued) Figure 5-7. Receiver Low-Level Output Voltage vs Low-Level Output Current 8 Figure 5-8. Receiver Low-Level Output Voltage vs Free-Air Temperature Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 6 Parameter Measurement Information Figure 6-1. Driver VDD and VOC Figure 6-2. Receiver VOH and VOL A. B. 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. CL includes probe and jig capacitance. Figure 6-3. Driver Test Circuit and Voltage Waveforms A. B. 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. CL includes probe and jig capacitance. Figure 6-4. Receiver Test Circuit and Voltage Waveforms Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B 9 SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 7 Detailed Description 7.1 Functional Block Diagram A. Driver input: R(eq) = 3 kΩ NOMR(eq) = equivalent resistor Figure 7-1. Equivalent of Driver Input Figure 7-2. Typical of All Driver Outputs Figure 7-3. Equivalent of Each Receiver Input Figure 7-4. Typical of All Receiver Outputs 10 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 7.2 Device Functional Modes Table 7-1. Driver(1) (1) OUTPUTS INPUT D Y Z H H L L L H H = high level, L = low level, ? = indeterminate Table 7-2. Receiver(1) (1) DIFFERENTIAL INPUTS A–B OUTPUT R VID ≥ 0.2 V H –0.2 V < VID < 0.2 V ? VID ≤ –0.2 V L Open ? H = high level, L = low level, ? = indeterminate Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B 11 SN75179B www.ti.com SLLS003F – OCTOBER 1985 – REVISED OCTOBER 2022 8 Device and Documentation Support TI offers an extensive line of development tools. Tools and software to evaluate the performance of the device, generate code, and develop solutions are listed below. 8.1 Documentation Support 8.1.1 Related Documentation 8.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. Click on Subscribe to updates to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 8.3 Support Resources TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need. Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. 8.4 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 8.5 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 8.6 Glossary TI Glossary This glossary lists and explains terms, acronyms, and definitions. 9 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 12 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75179B PACKAGE OPTION ADDENDUM www.ti.com 18-Nov-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) SN75179BD LIFEBUY SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75179B SN75179BDE4 LIFEBUY SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75179B SN75179BDR ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75179B Samples SN75179BDRG4 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75179B Samples SN75179BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN75179BP Samples SN75179BPE4 ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN75179BP Samples SN75179BPSR ACTIVE SO PS 8 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 A179B Samples (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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of