{"id":8021,"date":"2026-06-28T08:47:37","date_gmt":"2026-06-28T08:47:37","guid":{"rendered":"https:\/\/materialparts.com\/sn65hvd74dgkr-2\/"},"modified":"2026-06-28T11:43:46","modified_gmt":"2026-06-28T11:43:46","slug":"sn65hvd74dgkr-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/sn65hvd74dgkr-2\/","title":{"rendered":"SN65HVD74DGKR"},"content":{"rendered":"<h2>SN65HVD74DGKR Overview<\/h2>\n<p>The SN65HVD74DGKR is a 3.3V full-duplex RS-485 transceiver from Texas Instruments with data rates up to 20Mbps, built-in 12kV IEC ESD protection, in a VSSOP-8 package, suitable for industrial communication and motion control systems.<\/p>\n<h3>Key Features<\/h3>\n<ul>\n<li>Supply voltage: 3.3V<\/li>\n<li>Data rate: 20Mbps<\/li>\n<li>Full-duplex mode<\/li>\n<li>12kV IEC ESD protection<\/li>\n<li>Bus voltage range: -7V to 12V<\/li>\n<li>Operating temperature: -40C to 125C<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>SN65HVD74DGKR Overview The SN65HVD74DGKR is a 3.3V full-duplex RS-485 transceiver from Texas Instruments with data rates up to 20Mbps, built-in 12kV IEC ESD protection, in a VSSOP-8 package, suitable for industrial communication and motion control systems. Key Features Supply voltage: 3.3V Data rate: 20Mbps Full-duplex mode 12kV IEC ESD protection Bus voltage range: -7V to [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[138],"class_list":["post-8021","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"3.3V RS-485 transceiver, 1Mbps, VSSOP-8","date_code":"","package_case":"VSSOP-8 (3.00 x 3.00 x 0.90 mm)","in_stock":4069,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn65hvd74.pdf","price":"$1.50 @ 1ku","product_introduction":"The SN65HVD74DGKR is a 3.3 V RS-485\/RS-422 transceiver from Texas Instruments in an 8-pin VSSOP (3.0 x 3.0 mm) package, supporting data rates up to 20 Mbps with one driver and one receiver in full-duplex configuration. It features 1\/8 unit load receiver input impedance allowing up to 256 nodes on the bus, plus or minus 16 kV IEC 61000-4-2 ESD protection on the bus pins, failsafe receiver operation (guaranteed high output for open\/shorted inputs), and a low 370 uA receive-mode supply current. The extended -40 C to +85 C operating temperature range supports industrial environments.","working_principle":"The SN65HVD74DGKR implements a full-duplex RS-485\/RS-422 transceiver with separate driver and receiver signal paths. The driver section converts single-ended CMOS logic (applied to the D input) into a differential signal on the Y and Z outputs, compliant with TIA\/EIA-485-A. The driver output stage provides a minimum 1.5 V differential output across a 54 Ohm load with current limiting and thermal shutdown protection against bus contention faults. The receiver section monitors the differential voltage between the A and B inputs and outputs the corresponding logic level on the R output. Receiver hysteresis (25 mV typical) provides noise immunity. Failsafe biasing ensures the receiver output goes high when the bus is open, shorted, or terminated but undriven, preventing random noise from being interpreted as data. The driver enable (DE) and receiver enable (RE) pins allow independent direction control. With DE low and RE high, the device enters a low-power shutdown mode. The 1\/8 unit load receiver input impedance (greater than 96 kOhm) allows 256 transceivers to share a single RS-485 bus without exceeding the 32 unit-load maximum defined by the standard.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>R<\/td><td>Receiver output; logic level corresponding to A-B differential input<\/td><\/tr><tr><td>2<\/td><td>RE<\/td><td>Receiver enable; active low, high-impedance R output when high<\/td><\/tr><tr><td>3<\/td><td>DE<\/td><td>Driver enable; active high, high-impedance Y\/Z outputs when low<\/td><\/tr><tr><td>4<\/td><td>D<\/td><td>Driver input; CMOS logic level data input<\/td><\/tr><tr><td>5<\/td><td>GND<\/td><td>Ground reference<\/td><\/tr><tr><td>6<\/td><td>Y<\/td><td>Driver non-inverting output; connects to RS-485 bus<\/td><\/tr><tr><td>7<\/td><td>Z<\/td><td>Driver inverting output; connects to RS-485 bus<\/td><\/tr><tr><td>8<\/td><td>VCC<\/td><td>3.3 V power supply (3.0 V to 3.6 V)<\/td><\/tr><\/table><p>Package: VSSOP-8 (3.0 x 3.0 mm). Pin-compatible with industry-standard SN75176\/SN65176 in SOIC-8 footprint with appropriate adapter.<\/p>","application_scenarios":"<ul><li><strong>Industrial RS-485 Networks<\/strong>: Multi-drop communication bus in factory automation supporting 256 nodes<\/li><li><strong>Motor Drive Telemetry<\/strong>: Full-duplex RS-485 link between servo drive and motion controller at 20 Mbps<\/li><li><strong>Building Automation<\/strong>: BACnet MS\/TP and Modbus RTU communication over twisted-pair cabling<\/li><li><strong>Grid Inverters<\/strong>: Isolated RS-485 communication between solar inverters and monitoring systems<\/li><li><strong>Process Control<\/strong>: 4-20 mA loop digitizer communication over RS-485 in chemical and oil and gas plants<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>Rate<\/th><th>Supply<\/th><th>Duplex<\/th><th>Package<\/th><\/tr><tr><td>SN65HVD70DR<\/td><td>Texas Instruments<\/td><td>1 Mbps<\/td><td>3.3 V<\/td><td>Half<\/td><td>SOIC-8<\/td><\/tr><tr><td>THVD1550DR<\/td><td>Texas Instruments<\/td><td>50 Mbps<\/td><td>3.3 V<\/td><td>Half<\/td><td>SOIC-8<\/td><\/tr><tr><td>LTC2852IMS<\/td><td>Analog Devices<\/td><td>20 Mbps<\/td><td>3.3 V<\/td><td>Full<\/td><td>MSOP-10<\/td><\/tr><tr><td>ADM3485EARZ<\/td><td>Analog Devices<\/td><td>12 Mbps<\/td><td>3.3 V<\/td><td>Half<\/td><td>SOIC-8<\/td><\/tr><tr><td>ISL3179EIHZ<\/td><td>Renesas<\/td><td>40 Mbps<\/td><td>3.3 V<\/td><td>Full<\/td><td>QSOP-16<\/td><\/tr><\/table>\n<p>SN65HVD74DGKR is a 3.3V 20Mbps RS-485 full-duplex transceiver from TI in VSSOP-8 (3x3mm) with \u00b130kV HBM ESD and \u00b112kV IEC ESD. The SN65HVD70DR provides half-duplex operation. SN65HVD75 offers 1Mbps lower-speed option. THVD1550 is the newer TI RS-485 family with up to 50Mbps data rates. For 5V operation, SN65HVD23 provides 25Mbps with \u00b116kV IEC ESD. ADM3483ARZ from ADI is a 3.3V half-duplex alternative with 12Mbps data rate.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=8021"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8021\/revisions"}],"predecessor-version":[{"id":8110,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8021\/revisions\/8110"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8021"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}