SN75ALS181NSR

SN75ALS181 SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 SN75ALS181 Differential Driver and Receiver Pair 1 Features 2 Description • The SN75ALS181 is a differential driver and receiver pair designed for bidirectional data communication on multipoint bus transmission lines. The design provides for balanced transmission lines and meets TIA/EIA-422-B and TIA/EIA-485-A, and CCITT recommendations V.10, V.11, X.26, and X.27. • • • • • • • • • • Meets TIA/EIA-422-B, TIA/EIA-485-A, and CCITT recommendations V.11 and X.27 Low supply-current requirements... 30 mA max Driver output capacity...±60 mA Thermal shutdown protection Driver common-mode output voltage range of –7 V to 12 V Receiver input impedance: 12 kΩ min Receiver input sensitivity: ±200 mV Receiver input hysteresis: 60 mV typ Receiver common-mode input voltage range of ±12 V Operates from single 5-V supply Glitch-free power-up and power-down protection The SN75ALS181 combines a 3-state differential line driver and a differential-input line receiver that operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, that can be connected together externally to function as a direction control. The driver differential outputs and the receiver differential inputs are connected to separate pins for greater flexibility and are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. These ports feature wide positive and negative common-mode voltage changes, making the device suitable for partyline applications. Device Information PART NUMBER SN75ALS181 (1) PACKAGE(1) BODY SIZE (NOM) N (PDIP) 14-pins 19.3 mm x 6.35 mm NS (SO) 14-pins 10.3 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. SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – 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 Thermal Information....................................................4 5.3 Recommended Operating Conditions.........................4 5.4 Electrical Characteristics: Driver................................. 5 5.5 Switching Characteristics: Driver................................ 5 5.6 Electrical Characteristics: Receiver............................ 6 5.7 Switching Characteristics: Receiver............................6 Parameter Measurement Information............................... 7 6 Detailed Description......................................................10 6.1 Device Functional Modes..........................................10 7 Device and Documentation Support............................12 7.1 Receiving Notification of Documentation Updates....12 7.2 Support Resources................................................... 12 7.3 Trademarks............................................................... 12 7.4 Electrostatic Discharge Caution................................12 7.5 Glossary....................................................................12 3 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (August 2013) to Revision E (October 2022) Page • Added the Pin Configuration and Functions ...................................................................................................... 3 • Deleted the Package thermal impedance from the Absolute Maximum Ratings ...............................................4 • Added the Thermal Information table................................................................................................................. 4 • Added the Detailed Description section............................................................................................................10 Changes from Revision C (May 2010) to Revision D (August 2013) Page • Fixed typographical error in MAX value for Δ|VOD|. ........................................................................................... 5 • Fixed typographical error in UNITS for Δ|VOC|....................................................................................................5 • Removed Ordering Information table................................................................................................................10 • Fixed graphical error in schematic....................................................................................................................10 2 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 4 Pin Configuration and Functions N.C. – No internal connection Figure 4-1. N OR NS Package (Top View) Table 4-1. Pin Functions PIN NAME NC NO. TYPE DESCRIPTION 1, 8 No Connect Not electrically connected R 2 Digital Output Logic output RS485 data RE 3 Digital Input Receiver enable, active low DE 4 Digital Input Driver enable, active high D 5 Digital Input Driver data input GND 6, 7 Ground Y 9 Bus Output Bus Output Y (Complementary to Z) Z 10 Bus Output Bus Output Z (Complementary to Y) B 11 Bus Input Bus Input B (Complementary to A) 12 Bus Input Bus Input A (Complementary to B) 13, 14 Power A VCC Device ground 5 V Supply Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 3 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 5 Specifications 5.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) see (1) MIN VCC MAX Supply voltage range(2) Input voltage range D, DE, and RE inputs Output voltage range Driver Input voltage range Receiver Receiver differential input voltage range(3) (1) (2) (3) Storage temperature range V 7 V –9 14 V –14 14 V –14 14 V 260 °C 150 °C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds Tstg UNIT 7 –65 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. All voltage values, except differential input voltage, are with respect to network ground terminal. Differential input voltage is measured at the non-inverting terminal with respect to the inverting terminal. 5.2 Thermal Information THERMAL METRIC(1) N (PDIP) NS (SO) 14-Pins 14-Pins UNIT R θJA Junction-to-ambient thermal resistance 54.2 88.6 °C/W R θJB Junction-to-board thermal resistance 41.6 49.12 °C/W ψ JT Junction-to-top characterization parameter 34.0 14.17 °C/W ψ JB Junction-to-board characterization parameter 21.1 48.6 °C/W R θJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report. 5.3 Recommended Operating Conditions VCC Supply voltage VOC Common-mode output voltage(1) Driver VIC Common-mode input voltage(1) Receiver VIH High-level input voltage D, DE, and RE VIL Low-level input voltage D, DE, and RE VID Differential input voltage IOH IOL Low-level output current TA Operating free-air temperature (1) 4 High-level output current MIN NOM MAX UNIT 4.75 5 5.25 V –7 12 V –12 12 V 2 V 0.8 Driver Receiver Driver V –60 mA –400 µA 60 Receiver 8 0 V ±12 70 mA °C The algebraic convention, where the less positive (more negative) limit is designated as minimum, is used in this table for commonmode output voltage level only. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – 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| VCC = 5 V , RL = 100 Ω Differential output voltage See Figure 6-1 Vtest = –7 V to 12 V, See Figure 6-2 RL = 54 Ω or 100 Ω, See Figure 6-1 VOC Common mode output voltage RL = 54 Ω or 100 Ω, See Figure 6-1 Δ|VOC| Change in magnitude of common-mode output voltage(2) RL = 54 Ω or 100 Ω, See Figure 6-1 IOZ High-impedance-state output current VO = –7 V to 12 V(3) IIH High-level input current VIH = 2.4 V IIL Low-level input current Short circuit output current (1) (2) (3) Supply current (total package) UNIT –1.5 V 6 V 1.5 6 V 2 V 2.3 5 1.5 5 V ±0.2 V 3 –1 V ±0.2 V ±100 µA 20 µA VIL = 0.4 V –100 µA VO = –7 V –250 VO = VCC 250 VO = 12 V 250 VO = 0 V ICC MAX 0 1.5 Change in magnitude of differential output Δ|VOD| voltage IOS Differential output voltage TYP(1) 1/2 VOD1 RL = 54 Ω |VOD3| MIN mA –150 No load Outputs enabled 21 30 Outputs disabled 14 21 mA All typical values are at VCC = 5 V and TA = 25°C. 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. This applies for both power on and power off. Refer to TIA/EIA-485-A for exact conditions 5.5 Switching Characteristics: Driver over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP(1) 9 13 20 ns 1 8 ns MAX UNIT tdD Differential output delay time, tdDH or tdDL RL = 54 Ω , CL = 50 pF, See Figure 6-3 tsk(p) Pulse skew (|tdDH – tdDL|) RL = 54 Ω , CL = 50 pF, See Figure 6-3 tt Differential output transition time RL = 54 Ω , CL = 50 pF, See Figure 6-3 10 16 ns tPZH Output enable time to high level RL = 110 Ω , See Figure 6-4 36 53 ns tPZL Output enable time to low level RL = 110 Ω , See Figure 6-5 39 56 ns tPHZ Output disable time from high level RL = 110 Ω , See Figure 6-4 20 31 ns tPLZ Output disable time from low level RL = 110 Ω , See Figure 6-5 9 20 ns (1) 3 All typical values are at VCC = 5 V and TA = 25°C. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 5 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 5.6 Electrical Characteristics: Receiver over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS VT+ Positive-going threshold voltage, differential input VO = 2.7 V, IO = –0.4 mA VT– Negative-going threshold voltage, differential input VO = 0.5 V, IO = 8 mA Vhys Input hysteresis (VT+ – VT–) VIK Input clamp voltage, RE II = –18 mA VOH High-level output voltage VID = 200 mV, IOH = –400 μA, See Figure 6-6 VOL Low-level output voltage VID = 200 mV, IOL = 8 mA, IOZ High-impedance-state output current VO = 0.4 V to 2.4 V II Line input current Other input at 0 V(2), IIH High-level input current, RE VIH = 2.7 V IIL Low-level input current, RE VIL = –7 V RI Input resistance IOS Short circuit output current ICC (1) (2) Supply current (total package) TYP(1) MIN MAX UNIT 0.2 –0.2 V 60 mV –1.5 V 2.7 V See Figure 6-6 0.45 V ±20 µA VI = 12 V 1 VI = –7 V –0.8 VO = 0 V mA 20 µA –100 µA –85 mA 12 VID = 200 mV, No load V kΩ –15 Outputs enabled 21 30 Outputs disabled 14 21 mA All typical values are at VCC = 5 V and TA = 25°C. This applies for both power on and power off. Refer to TIA/EIA-485-A for exact conditions 5.7 Switching Characteristics: Receiver over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER MIN TYP(1) MAX UNIT tPHL Differential output delay time, tdDH or tdDL VID = –1.5 V to 1.5 V 10 16 25 ns tPLH Propagation delay time, low- to high-level output VID = –1.5 V to 1.5 V 10 16 25 ns tsk(p) Pulse skew (|tdDH – tdDL|) VID = –1.5 V to 1.5 V 1 8 ns tPZH Output enable time to high level 7 15 ns tPZL Output enable time to low level 9 19 ns tPHZ Output disable time from high level 18 27 ns tPLZ Output disable time from low level 10 15 ns (1) 6 TEST CONDITIONS All typical values are at VCC = 5 V and TA = 25°C. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 Parameter Measurement Information Figure 6-1. Driver Test Circuit, VOD and VOC Figure 6-2. Driver Circuit, VOD3 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 Differential-Output Delay and Transition Times 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. Driver Enable and Disable Times Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 7 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 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 6-5. Driver Enable and Disable Times Figure 6-6. 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 6-7. Receiver Propagation-Delay Times 8 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 SN75ALS181 www.ti.com A. B. SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 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 6-8. Receiver Output Enable and Disable Times Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 9 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 6 Detailed Description 6.1 Device Functional Modes 6.1.1 Function Tables Each Driver INPUTS D ENABLE DE OUTPUTS Y Z H H H L L H L H X L Z Z Each Receiver(1) DIFFERENTIAL A–B ENABLE RE OUTPUT R VID ≥ 0.2 V L H –0.2 V < VID < 0.2 V L ? VID ≤ –0.2 V L L X H Z (1) H = high level, L = low level, ? = indeterminate, X = irrelevant, Z = high impedance (off) 6.1.2 Schematics W W W W W Figure 6-1. SCHEMATICS OF INPUTS 10 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 www.ti.com SN75ALS181 SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 Figure 6-2. SCHEMATICS OF OUTPUTS Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 11 SN75ALS181 www.ti.com SLLS152E – DECEMBER 1992 – REVISED OCTOBER 2022 7 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. 7.1 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. 7.2 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. 7.3 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 7.4 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. 7.5 Glossary TI Glossary 12 This glossary lists and explains terms, acronyms, and definitions. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN75ALS181 PACKAGE OPTION ADDENDUM www.ti.com 29-Apr-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) (4/5) (6) SN75ALS181N ACTIVE PDIP N 14 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 SN75ALS181N SN75ALS181NSR ACTIVE SO NS 14 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75ALS181 SN75ALS181NSRG4 ACTIVE SO NS 14 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 75ALS181 (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