{"license":"Free for any use with attribution link to rfid-datasheet.com","citation":"RFID-Datasheet.com Chip Database — Roxtron","source":"https://rfid-datasheet.com/chip/hitag-s","methodology":"https://rfid-datasheet.com/methodology","data_notes":"Includes automated enrichment. Null means unknown; last_checked is link availability, not technical review. Manufacturer documents govern specifications.","generated_at":"2026-11-01T19:50:02.015Z","chip":{"id":"c322b9c5-6191-4fbf-a65e-2a4b8065da01","slug":"hitag-s","name":"HITAG S","manufacturer":"NXP","frequency_category":"LF 125 kHz","short_description":"Secure LF, automotive and industrial","manufacturer_url":"https://www.nxp.com/docs/en/data-sheet/HTSICH56_48_SDS.pdf","frequency":"100 kHz to 150 kHz","protocol":"HITAG proprietary protocol (based on HITAG 1), ISO 11784/85 Animal ID compliant, ISO 14223/ISO 18000-2 targeted","memory":"256 bit (HITAG S256) or 2048 bit (HITAG S2048) total memory, organized in 64 pages of 32 bits each, up to 100000 erase/write cycles, 10 years data retention","interface":"RF (contactless), integrated resonance capacitor 210 pF ±5%","temp_range":"-25°C to +85°C (junction temperature)","form_factor":"Sawn gold-bumped 8\" wafer, sawn gold-megabumped 8\" wafer, MOA4 (PLLMC contactless chip card module SOT500-2), HVSON2 (3×2×0.85 mm SOT899-1)","security":"32-bit Unique Identification Number (UID), 48-bit secret key based encrypted authentication, secure memory lock functionality, plain mode and authentication mode operation","use_cases":["automotive-immobilizer","animal-identification","industrial-iot","access-control"],"engineering_brief":"HITAG S is a 125 kHz LF contactless transponder IC offering two memory options (256-bit or 2048-bit) with backward compatibility to existing HITAG 1/2 reader infrastructure. The chip features fast anticollision protocol (100 tags in 3.2 seconds), integrated 210 pF resonance capacitor, and selectable plain or 48-bit encrypted authentication modes. Data rates support 5.2 kbit/s reader-to-tag and selectable 2/4/8 kbit/s tag-to-reader communication with Manchester and bi-phase coding, plus optional Transponder-Talks-First mode for rapid identification applications.","enriched":true,"url_status":"ok","link_status":"valid","last_checked":"2026-11-01T03:31:28.371+00:00","last_status_code":200,"last_content_type":"application/pdf","created_at":"2026-06-14T16:30:56.111445+00:00","manufacturer_id":"6daaf1cc-d0e6-40c7-aba0-a08b4c3493fe","chip_type":"tag_ic","dual_interface":false,"is_family_hub":false,"meta_description":"NXP HITAG S 125 kHz LF transponder IC with 256-bit or 2048-bit memory, 48-bit encrypted authentication, and ISO 11784/85 compliance for automotive and industrial applications.","faq":[{"a":"The HITAG S is available in two memory configurations: HITAG S256 with 256 bits and HITAG S2048 with 2048 bits of total memory. Both versions organize memory in 64 pages of 32 bits each.","q":"What memory sizes are available for the NXP HITAG S?"},{"a":"Yes, HITAG S maintains backward compatibility with existing HITAG 1 and HITAG 2 reader infrastructure while using the HITAG proprietary protocol. It operates at 125 kHz LF frequency range (100-150 kHz).","q":"Is HITAG S compatible with existing HITAG readers?"},{"a":"HITAG S provides a 32-bit Unique Identification Number (UID), 48-bit secret key based encrypted authentication, and secure memory lock functionality. It supports both plain mode and authentication mode operation for flexible security requirements.","q":"What security features does the HITAG S offer?"},{"a":"The HITAG S features fast anticollision protocol capable of reading 100 tags in 3.2 seconds. Data rates are 5.2 kbit/s from reader-to-tag and selectable 2/4/8 kbit/s from tag-to-reader.","q":"How fast is the HITAG S anticollision performance?"},{"a":"HITAG S is compliant with ISO 11784/85 for animal identification and targets ISO 14223 and ISO 18000-2 standards for RFID animal tracking and item management.","q":"What ISO standards does HITAG S comply with?"},{"a":"HITAG S memory supports up to 100,000 erase/write cycles and offers 10 years of data retention, making it suitable for long-term automotive and industrial applications.","q":"What is the data retention and write endurance of HITAG S?"}],"standards":["iso-11784-11785","iso-18000-2"],"alternatives":["3d5557e0-57db-43d5-81b6-19e1b2a93cab","a9e71908-817a-43b2-a0ce-0d180be72f27","6fbf8d09-eab5-4645-a4ff-d46e5193497f"],"no_direct_competitor":false,"long_form_html":null,"og_image_url":null,"canonical_url":"https://rfid-datasheet.com/chip/hitag-s"}}