{"id":7934,"date":"2026-06-28T05:54:02","date_gmt":"2026-06-28T05:54:02","guid":{"rendered":"https:\/\/materialparts.com\/sn74ls04n-2\/"},"modified":"2026-06-28T11:45:46","modified_gmt":"2026-06-28T11:45:46","slug":"sn74ls04n-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/sn74ls04n-2\/","title":{"rendered":"SN74LS04N"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The SN74LS04N from Texas Instruments is a hex inverter (six independent NOT gates) with LS TTL technology, 12ns propagation delay, and industry-standard 7404 pinout in a 14-pin PDIP package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Number of Gates<\/td>\n6 (hex inverter)<\/td>\n<\/tr>\n
\u903b\u8f91\u5bb6\u65cf<\/td>\nLS (Low-power Schottky)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n4.75V to 5.25V (5V nominal)<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n12ns typical @ 5V<\/td>\n<\/tr>\n
Output Drive (IOL\/IOH)<\/td>\n8mA \/ -0.4mA<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n0\u00b0C to +70\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nPDIP-14 (19.3 x 6.35mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Six independent inverter gates<\/li>\n
  • LS TTL technology<\/li>\n
  • 12ns typical propagation delay<\/li>\n
  • Industry-standard 7404 pinout<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Logic signal inversion<\/li>\n
    • Active-HIGH to active-LOW conversion<\/li>\n
    • Clock signal buffering and inversion<\/li>\n
    • Logic level translation (TTL family)<\/li>\n
    • Simple oscillator with RC feedback<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74LS04N from Texas Instruments is a hex inverter (six independent NOT gates) with LS TTL technology, 12ns propagation delay, and industry-standard 7404 pinout in a 14-pin PDIP package. Key Specifications Number of Gates 6 (hex inverter) Logic Family LS (Low-power Schottky) Supply Voltage 4.75V to 5.25V (5V nominal) Propagation Delay 12ns typical […]<\/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-7934","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"Hex inverter, LS TTL, 12ns, PDIP-14","date_code":"","package_case":"PDIP-14 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)","in_stock":10000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74ls04.pdf","price":"$0.22 @ 1ku","product_introduction":"The SN74LS04N from Texas Instruments contains six independent inverter (NOT) gates in a 14-pin PDIP package. Each gate performs Y = NOT(A), converting a HIGH input to a LOW output and vice versa. The 7404 is one of the most fundamental logic ICs, used whenever a signal needs to be inverted: converting active-HIGH to active-LOW, generating complementary signals, or constructing oscillators. Six inverters in one package makes the 7404 efficient for systems needing multiple inversions. The N suffix denotes the PDIP-14 through-hole package.","working_principle":"Each inverter in the SN74LS04N performs Y = NOT(A). The truth table is: 0\u21921, 1\u21920. The LS TTL inverter uses a multi-emitter input transistor (or diode-clamped input) and a totem-pole output stage. When the input is LOW, the output transistor is off and the pull-up transistor drives the output HIGH. When the input is HIGH, the output transistor is on and the pull-up is off, driving the output LOW. The 12ns propagation delay is the time from input transition to output transition. For a simple RC oscillator, an inverter with feedback resistor (1M\u03a9 from output to input) and a capacitor (100nF from input to ground) creates a relaxation oscillator. However, the 7404 is not a Schmitt trigger, so for noisy or slowly-rising inputs, the 74LS14 (hex Schmitt inverter) is preferred to avoid output oscillation.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>1A<\/td>Input<\/td>Inverter 1 input<\/td><\/tr>\n
      2<\/td>1Y<\/td>Output<\/td>Inverter 1 output<\/td><\/tr>\n
      3<\/td>2A<\/td>Input<\/td>Inverter 2 input<\/td><\/tr>\n
      4<\/td>2Y<\/td>Output<\/td>Inverter 2 output<\/td><\/tr>\n
      5<\/td>3A<\/td>Input<\/td>Inverter 3 input<\/td><\/tr>\n
      6<\/td>3Y<\/td>Output<\/td>Inverter 3 output<\/td><\/tr>\n
      7<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      8<\/td>4Y<\/td>Output<\/td>Inverter 4 output<\/td><\/tr>\n
      9<\/td>4A<\/td>Input<\/td>Inverter 4 input<\/td><\/tr>\n
      10<\/td>5Y<\/td>Output<\/td>Inverter 5 output<\/td><\/tr>\n
      11<\/td>5A<\/td>Input<\/td>Inverter 5 input<\/td><\/tr>\n
      12<\/td>6Y<\/td>Output<\/td>Inverter 6 output<\/td><\/tr>\n
      13<\/td>6A<\/td>Input<\/td>Inverter 6 input<\/td><\/tr>\n
      14<\/td>VCC<\/td>Power<\/td>Supply (4.75V to 5.25V)<\/td><\/tr>\n<\/table>\n

      SN74LS04N uses the PDIP-14 package with standard hex inverter pinout: VCC at Pin 14, GND at Pin 7. Six independent inverters: Inv 1 (Pin 1 in, Pin 2 out), Inv 2 (Pin 3 in, Pin 4 out), Inv 3 (Pin 5 in, Pin 6 out), Inv 4 (Pin 9 in, Pin 8 out), Inv 5 (Pin 11 in, Pin 10 out), Inv 6 (Pin 13 in, Pin 12 out). This is the most widely used pinout for 14-pin hex inverters, shared by 7404, 74LS04, 74HC04, 74HCT04, and 74AC04. For Schmitt-trigger input version, use SN74LS14N (same pinout, hysteresis on all inputs). For open-collector output, use SN74LS05N. Propagation delay is typically 10ns for LS technology.<\/p>","application_scenarios":"

        \n
      • Signal Inversion:<\/strong> Convert active-HIGH to active-LOW; e.g., invert \/CS to CS for active-HIGH peripheral<\/li>\n
      • Double Inversion:<\/strong> Two inverters in series = buffer; cleans up signal levels while maintaining polarity<\/li>\n
      • RC Oscillator:<\/strong> Feedback resistor + input capacitor creates relaxation oscillator; ~1\/(2.2\u00d7R\u00d7C) frequency<\/li>\n
      • Complementary Clock:<\/strong> One inverter generates inverted clock; two outputs available (CLK and \/CLK)<\/li>\n
      • Level Translation:<\/strong> Convert 3.3V CMOS HIGH to TTL-compatible level through LS04; 5V output<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Supply<\/th><\/tr>\n
        74LS04N<\/td>TI\/Nexperia<\/td>Original TTL version with 5V-only supply, typical propagation delay 10-15ns<\/td>DIP-14<\/td>5V TTL<\/td><\/tr>\n
        74LS04D<\/td>TI\/Nexperia<\/td>Surface-mount SOIC version of LS with identical logic function<\/td>SOIC-14<\/td>5V TTL<\/td><\/tr>\n
        74HC04D<\/td>TI\/Nexperia<\/td>CMOS version with wide 2-6V supply range, lower power consumption and higher noise immunity<\/td>SOIC-14<\/td>2-6V CMOS<\/td><\/tr>\n
        74HC04N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of HC family for prototyping and repair<\/td>DIP-14<\/td>2-6V CMOS<\/td><\/tr>\n
        74HCT04D<\/td>TI\/Nexperia<\/td>CMOS with TTL-compatible input levels, ideal for mixing with LS devices at 5V<\/td>SOIC-14<\/td>4.5-5.5V TTL-in<\/td><\/tr>\n
        74HCT04N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of HCT family for prototyping and repair<\/td>DIP-14<\/td>4.5-5.5V TTL-in<\/td><\/tr>\n
        74AC04D<\/td>TI\/Nexperia<\/td>Advanced CMOS with 2-6V supply and higher output drive current (24mA vs 6mA for HC)<\/td>SOIC-14<\/td>2-6V CMOS<\/td><\/tr>\n
        74AC04N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of AC family for prototyping and repair<\/td>DIP-14<\/td>2-6V CMOS<\/td><\/tr>\n
        74LVC04D<\/td>TI\/Nexperia<\/td>Low-voltage CMOS for 1.65-3.6V modern logic with 24mA output drive and bus-hold inputs<\/td>SOIC-14<\/td>1.65-3.6V CMOS<\/td><\/tr>\n
        74LVC04N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of LVC family for prototyping and repair<\/td>DIP-14<\/td>1.65-3.6V CMOS<\/td><\/tr>\n
        74AUP04D<\/td>TI\/Nexperia<\/td>Ultra-low power CMOS with 0.8-3.6V supply for battery-powered and mobile applications<\/td>SOIC-14<\/td>0.8-3.6V CMOS<\/td><\/tr>\n
        74AUP04N<\/td>TI\/Nexperia<\/td>Through-hole DIP version of AUP family for prototyping and repair<\/td>DIP-14<\/td>0.8-3.6V CMOS<\/td><\/tr>\n<\/table>\n

        The 7404 is a Hex Inverter. Family variants span from the original LS TTL (5V only) to modern LVC\/AUP (down to 0.8V). HC and HCT versions offer 2-6V CMOS operation with HCT providing TTL-compatible input thresholds for mixed 5V systems. CD4000-series equivalents offer the widest 3-18V supply range at the cost of lower switching speed. DIP packages (N suffix) are through-hole; SOIC (D suffix) and TSSOP are surface-mount.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7934","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=7934"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7934\/revisions"}],"predecessor-version":[{"id":8184,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7934\/revisions\/8184"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7934"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}