The ISO3088DWR is a Texas Instruments 20Mbps half-duplex isolated RS-485\/RS-422 transceiver with 2500Vrms isolation. It supports 1\/8 unit load (256 nodes), 50kV\/us CMTI, fail-safe receiver, and 12kV HBM ESD on bus pins. Packaged in 16-pin SOIC, -40C to +85C.<\/p>\n
| \u0645\u0639\u062f\u0644 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/td>\n | 20 Mbps<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||||||||
| Isolation<\/td>\n | 2500 Vrms (UL 1577)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||||||||
| Mode<\/td>\n | Half-duplex<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||||||||
| Unit Load<\/td>\n | 1\/8 (256 nodes)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||||||||
| CMTI<\/td>\n | 50 kV\/us typical<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||||||||
| ESD (bus to GND2)<\/td>\n | 12 kV HBM<\/td>\n<\/tr>\n<\/table>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\nProduct Overview The ISO3088DWR is a Texas Instruments 20Mbps half-duplex isolated RS-485\/RS-422 transceiver with 2500Vrms isolation. It supports 1\/8 unit load (256 nodes), 50kV\/us CMTI, fail-safe receiver, and 12kV HBM ESD on bus pins. Packaged in 16-pin SOIC, -40C to +85C. Key Specifications Data Rate 20 Mbps Isolation 2500 Vrms (UL 1577) Mode Half-duplex Unit […]<\/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-8799","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"20Mbps isolated RS-485 half-duplex, 2.5kVrms, 256 nodes, SOIC-16","date_code":"","package_case":"16-Pin SOIC (10.3 x 7.5 x 2.65 mm)","in_stock":5200,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/iso3088.pdf","price":"$1.613 @ 1ku","product_introduction":"The ISO3088DWR is a Texas Instruments 20Mbps half-duplex isolated RS-485 and RS-422 transceiver providing 2500Vrms galvanic isolation between the bus-side and logic-side circuits. The isolation barrier breaks ground loops, allowing operation with large common-mode voltage differences common in long-distance industrial networks. The 1\/8 unit load specification permits up to 256 nodes on a single bus. The 50kV\/us typical common-mode transient immunity (CMTI) ensures robust operation in electrically noisy environments near motor drives and power converters. Fail-safe receiver design guarantees a logic-high output when the bus is open, shorted, or idle. The 12kV HBM ESD protection on bus pins and thermal shutdown provide additional fault tolerance. The device meets TIA\/EIA RS-485 standards and is VDE, CSA, and UL safety certified. Packaged in 16-pin wide-body SOIC rated for -40C to +85C.","working_principle":"The ISO3088 uses capacitive SiO2 isolation technology to separate the bus transceiver from the logic interface. The isolation barrier consists of high-voltage silicon dioxide capacitors that couple digital signals across the barrier while blocking DC and low-frequency common-mode voltages. The driver converts single-ended logic signals (D, DE) into differential RS-485 bus signals (A, B) with controlled slew rate for 20Mbps operation. The receiver converts differential bus signals back to single-ended logic (R). In half-duplex mode, the driver and receiver share the same A\/B bus pins, with the driver enable (DE) and receiver enable (RE) controlling direction. The fail-safe receiver biases the inputs so that an idle or open bus produces a logic-high on R, preventing false start bits in UART communication.","pin_description":"
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