{"id":268,"date":"2025-11-20T03:17:39","date_gmt":"2025-11-20T03:17:39","guid":{"rendered":"https:\/\/hamtechtechnologies.com\/?post_type=product&#038;p=268"},"modified":"2025-11-20T03:46:24","modified_gmt":"2025-11-20T03:46:24","slug":"268","status":"publish","type":"product","link":"https:\/\/hamtechtechnologies.com\/index.php\/product\/268\/","title":{"rendered":"UDN2981 High-Side Driver"},"content":{"rendered":"<p data-start=\"430\" data-end=\"654\">The <strong data-start=\"434\" data-end=\"445\">UDN2981<\/strong> is an 8-channel source driver IC commonly used to interface low-voltage logic systems (Arduino, ESP32, Raspberry Pi) with higher-voltage loads such as LED arrays, relays, lamps, small motors, and solenoids.<\/p>\n<p data-start=\"656\" data-end=\"875\">Each channel can source up to <strong data-start=\"686\" data-end=\"708\">500mA peak current<\/strong>, allowing safe control of demanding loads. The chip includes built-in clamp diodes for switching inductive loads, reducing the need for external protection circuitry.<\/p>\n<p data-start=\"877\" data-end=\"1070\">Unlike typical low-side drivers like ULN2803, the UDN2981 is a <strong data-start=\"940\" data-end=\"960\">high-side driver<\/strong>, meaning it switches the positive voltage line \u2014 ideal for powering common-cathode LED matrices and displays.<\/p>\n<p data-start=\"1072\" data-end=\"1089\"><strong data-start=\"1072\" data-end=\"1089\">Key Features:<\/strong><\/p>\n<ul data-start=\"1090\" data-end=\"1414\">\n<li data-start=\"1090\" data-end=\"1120\">\n<p data-start=\"1092\" data-end=\"1120\">8-channel high-side driver<\/p>\n<\/li>\n<li data-start=\"1121\" data-end=\"1153\">\n<p data-start=\"1123\" data-end=\"1153\">Handles up to <strong data-start=\"1137\" data-end=\"1151\">50V output<\/strong><\/p>\n<\/li>\n<li data-start=\"1154\" data-end=\"1198\">\n<p data-start=\"1156\" data-end=\"1198\">Up to <strong data-start=\"1162\" data-end=\"1184\">500mA peak current<\/strong> per channel<\/p>\n<\/li>\n<li data-start=\"1199\" data-end=\"1251\">\n<p data-start=\"1201\" data-end=\"1251\">Built-in output clamp diodes for inductive loads<\/p>\n<\/li>\n<li data-start=\"1252\" data-end=\"1290\">\n<p data-start=\"1254\" data-end=\"1290\">Compatible with TTL and CMOS logic<\/p>\n<\/li>\n<li data-start=\"1291\" data-end=\"1372\">\n<p data-start=\"1293\" data-end=\"1372\">Perfect for LED matrices, displays, relays, solenoids, and high-voltage loads<\/p>\n<\/li>\n<li data-start=\"1373\" data-end=\"1414\">\n<p data-start=\"1375\" data-end=\"1414\">Drop-in alternative: TD62783, MIC2981<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The UDN2981 is an 8-channel high-side driver designed for driving LEDs, relays, solenoids, and other inductive loads from microcontrollers. It provides high-current sourcing capability with built-in protection.<\/p>\n","protected":false},"featured_media":269,"comment_status":"open","ping_status":"closed","template":"","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""}},"product_brand":[],"product_cat":[134,125,126,120,67],"product_tag":[136,138,139,137,135],"class_list":{"0":"post-268","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-driver-ics","7":"product_cat-ics-semiconductors","8":"product_cat-logic-ics","9":"product_cat-power-energy-monitoring-modules","10":"product_cat-power-modules","11":"product_tag-high-side-driver","12":"product_tag-led-driver-ic","13":"product_tag-relay-driver","14":"product_tag-source-driver","15":"product_tag-udn2981","17":"first","18":"instock","19":"taxable","20":"shipping-taxable","21":"purchasable","22":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product\/268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/comments?post=268"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media\/269"}],"wp:attachment":[{"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/media?parent=268"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=268"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=268"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/hamtechtechnologies.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}