{"id":6654,"date":"2026-06-18T16:01:09","date_gmt":"2026-06-18T16:01:09","guid":{"rendered":"https:\/\/materialparts.com\/lm393ap\/"},"modified":"2026-06-18T16:01:09","modified_gmt":"2026-06-18T16:01:09","slug":"lm393ap","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm393ap\/","title":{"rendered":"LM393AP"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LM393AP from Texas Instruments is a dual general-purpose voltage comparator with improved specifications over the standard LM393. Operating from single 2-36V or dual +\/-1-18V supply, it features open-collector outputs for flexible logic interfacing. Packaged in 8-PDIP.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n2 (independent)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2V to 36V (single) or +\/-1V to +\/-18V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a<\/td>\n1mV (typ, improved grade)<\/td>\n<\/tr>\n
Response Time<\/td>\n1.3us (typ, small signal)<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\nOpen-collector<\/td>\n<\/tr>\n
Output Sink Current<\/td>\n16mA (max)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u062a\u062d\u064a\u0632 \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n25nA (typ)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n8-PDIP<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Dual independent comparators<\/li>\n
  • Open-collector outputs for wired-OR<\/li>\n
  • 1mV typical input offset (A grade)<\/li>\n
  • 2-36V wide supply range<\/li>\n
  • Input common-mode includes ground<\/li>\n
  • Pin-compatible with LM393, LM2903, LM193<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Voltage threshold detection<\/li>\n
    • Window comparators<\/li>\n
    • Zero-crossing detectors<\/li>\n
    • Oscillator and timing circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM393AP from Texas Instruments is a dual general-purpose voltage comparator with improved specifications over the standard LM393. Operating from single 2-36V or dual +\/-1-18V supply, it features open-collector outputs for flexible logic interfacing. Packaged in 8-PDIP. Key Specifications Channels 2 (independent) Supply Voltage 2V to 36V (single) or +\/-1V to +\/-18V Input […]<\/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":[19,13],"tags":[],"chip_brand":[],"class_list":["post-6654","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics"],"acf":{"brief_explanation":"Dual voltage comparator, open-collector, 2-36V, 1mV offset, 8-PDIP","date_code":"","package_case":"8-PDIP","in_stock":13667,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm393a.pdf","price":"$0.35 @ 1ku","product_introduction":"The LM393AP from Texas Instruments is the improved-grade dual voltage comparator, featuring 1mV typical input offset voltage compared to 2mV for the standard LM393. Two independent comparators with open-collector outputs can sink up to 16mA each, allowing direct connection to logic gates, LEDs, or relay drivers through pull-up resistors. The open-collector outputs support wired-OR connections where multiple comparator outputs share a single pull-up resistor. Operating from 2V to 36V single supply (or +\/-1V to +\/-18V dual supply), the LM393AP covers virtually all common supply voltages. The input common-mode range includes ground, enabling single-supply operation with ground-referenced signals. The 1.3us response time supports applications up to several hundred kHz. The LM393AP is pin-compatible with the LM393, LM2903 (automotive), and LM193 (military) versions.","working_principle":"The LM393AP comparator continuously compares the voltage at its non-inverting input (+) to the voltage at its inverting input (-). When V+ > V-, the output transistor turns off and the open-collector output floats HIGH (via external pull-up resistor). When V+ < V-, the output transistor turns on and pulls the output LOW. Unlike op-amps, comparators have no internal compensation capacitor, providing much faster response (1.3us vs microseconds for op-amps). However, the lack of compensation means the LM393 cannot be used with negative feedback (it would oscillate). Positive feedback (hysteresis) can be added with a resistor from output to non-inverting input to prevent oscillation near the switching threshold. The open-collector output requires an external pull-up resistor to a voltage that can be different from the comparator supply, enabling level translation.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>1OUT<\/td>Comparator 1 output (open-collector)<\/td><\/tr>
      2<\/td>1IN-<\/td>Comparator 1 inverting input<\/td><\/tr>
      3<\/td>1IN+<\/td>Comparator 1 non-inverting input<\/td><\/tr>
      4<\/td>GND<\/td>Ground \/ negative supply<\/td><\/tr>
      5<\/td>2IN+<\/td>Comparator 2 non-inverting input<\/td><\/tr>
      6<\/td>2IN-<\/td>Comparator 2 inverting input<\/td><\/tr>
      7<\/td>2OUT<\/td>Comparator 2 output (open-collector)<\/td><\/tr>
      8<\/td>VCC<\/td>Positive supply (2-36V)<\/td><\/tr><\/table>","application_scenarios":"
      • Voltage threshold detection with 1mV precision and open-collector logic output<\/li>
      • Window comparator using two channels for over\/undervoltage monitoring<\/li>
      • Zero-crossing detector for AC signal synchronization<\/li>
      • Relaxation oscillator using open-collector with positive feedback hysteresis<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LM393N<\/td>TI<\/td>Standard grade, 2mV offset, lower cost<\/td><\/tr>
        LM2903N<\/td>TI<\/td>Automotive grade, -40 to 125C<\/td><\/tr>
        LM339N<\/td>TI<\/td>Quad comparator, 4 channels, 14-pin<\/td><\/tr>
        TLC3702CP<\/td>TI<\/td>CMOS push-pull output, no pull-up needed<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6654"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6654\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6654"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6654"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}