{"id":3013,"date":"2026-05-29T04:38:59","date_gmt":"2026-05-29T04:38:59","guid":{"rendered":"https:\/\/materialparts.com\/sn74hc138n\/"},"modified":"2026-05-30T01:13:04","modified_gmt":"2026-05-30T01:13:04","slug":"sn74hc138n","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/sn74hc138n\/","title":{"rendered":"SN74HC138N"},"content":{"rendered":"

Productos<\/h2>\n

The SN74HC138N is a 3-line to 8-line decoder\/demultiplexer from Texas Instruments. Designed for high-speed memory decoding and data transmission, it features three enable inputs for cascading, active-low outputs, 15 ns typical propagation delay, and operates from 2V to 6V in a 16-pin PDIP package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Decoder Type<\/td>\n3-to-8 line<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2V to 6V<\/td>\n<\/tr>\n
Propagation Delay (tpd)<\/td>\n15 ns typical<\/td>\n<\/tr>\n
Output Drive<\/td>\n+\/-4 mA at 5V<\/td>\n<\/tr>\n
ICC (Max)<\/td>\n80 uA<\/td>\n<\/tr>\n
Enable Inputs<\/td>\n3 (2 active-low, 1 active-high)<\/td>\n<\/tr>\n
Paquete<\/td>\nPDIP-16 (19.3 x 6.35 mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Active-low outputs for direct memory chip select<\/li>\n
  • Three enable inputs simplify cascading<\/li>\n
  • Drives up to 10 LSTTL loads<\/li>\n
  • Low power consumption: 80 uA max ICC<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Memory address decoding<\/li>\n
    • Data routing and demultiplexing<\/li>\n
    • LED display decoding<\/li>\n
    • Chip select generation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SN74HC138N is a 3-line to 8-line decoder\/demultiplexer from Texas Instruments. Designed for high-speed memory decoding and data transmission, it features three enable inputs for cascading, active-low outputs, 15 ns typical propagation delay, and operates from 2V to 6V in a 16-pin PDIP package. Key Specifications Decoder Type 3-to-8 line Supply Voltage 2V […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[],"chip_brand":[138],"class_list":["post-3013","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"3-to-8 line decoder\/demux, active-low outputs, 2-6V, PDIP-16","date_code":"","package_case":"PDIP-16 (19.3 x 6.35 mm)","in_stock":10248,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/sn74hc138.pdf","price":"$0.48 @ 1ku","product_introduction":"The SN74HC138N is a 3-line to 8-line decoder\/demultiplexer from Texas Instruments, designed for high-performance memory decoding and data routing applications. It takes a 3-bit binary input and activates one of eight active-low outputs. Three enable inputs (two active-low, one active-high) simplify cascading for larger decoder networks. With 15 ns typical propagation delay and low power consumption, this device minimizes system delay in memory-intensive applications.","working_principle":"The SN74HC138N decodes a 3-bit binary address on inputs A, B, C to assert one of eight active-low outputs (Y0-Y7). The selected output goes low while all others remain high. Three enable inputs (G1 active-high, G2A and G2B active-low) must all be in their active states for the decoder to function; if any enable is inactive, all outputs are forced high. This enable logic allows easy expansion: connecting multiple 138 devices with enable gating creates larger decoder networks (e.g., two 138s make a 4-to-16 decoder).","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>A<\/td>Input<\/td>Address input LSB<\/td><\/tr>
      2<\/td>B<\/td>Input<\/td>Address input middle bit<\/td><\/tr>
      3<\/td>C<\/td>Input<\/td>Address input MSB<\/td><\/tr>
      4<\/td>G2A<\/td>Input<\/td>Enable input (active low)<\/td><\/tr>
      5<\/td>G2B<\/td>Input<\/td>Enable input (active low)<\/td><\/tr>
      6<\/td>G1<\/td>Input<\/td>Enable input (active high)<\/td><\/tr>
      7<\/td>Y7<\/td>Output<\/td>Decoded output 7 (active low)<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td>Ground reference<\/td><\/tr>
      9-15<\/td>Y6-Y0<\/td>Output<\/td>Decoded outputs 6-0 (active low)<\/td><\/tr>
      16<\/td>VCC<\/td>Power<\/td>Supply voltage 2-6V<\/td><\/tr><\/table>","application_scenarios":"
      • Memory address decoding in microprocessor systems<\/li>
      • Chip select generation for peripheral devices<\/li>
      • LED display digit\/segment decoding<\/li>
      • Data demultiplexing and routing<\/li>
      • Industrial control logic systems<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>SN74HC138D<\/td>SOIC-16<\/td>Surface-mount version<\/td><\/tr>
        TI<\/td>SN74HC138NSR<\/td>SOP-16<\/td>Shrink SOP package<\/td><\/tr>
        NXP<\/td>74HC138N<\/td>PDIP-16<\/td>Pin-compatible alternative<\/td><\/tr>
        onsemi<\/td>MC74HC138ANG<\/td>PDIP-16<\/td>Equivalent function<\/td><\/tr>
        TI<\/td>SN74HCT138N<\/td>PDIP-16<\/td>TTL-compatible input version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=3013"}],"version-history":[{"count":2,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3013\/revisions"}],"predecessor-version":[{"id":3044,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3013\/revisions\/3044"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3013"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}