{"id":7165,"date":"2026-06-23T05:56:45","date_gmt":"2026-06-23T05:56:45","guid":{"rendered":"https:\/\/materialparts.com\/hef4047bt\/"},"modified":"2026-06-23T05:56:45","modified_gmt":"2026-06-23T05:56:45","slug":"hef4047bt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/hef4047bt\/","title":{"rendered":"HEF4047BT"},"content":{"rendered":"

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

The HEF4047BT from Nexperia is a retriggerable monostable\/astable multivibrator in a SOIC-14 package. Part of the HEF4000B CMOS logic family, it provides precision pulse generation with positive\/negative edge triggering and retriggerable operation from 3V to 15V.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n
\u529f\u80fd<\/td>\nMonostable\/Astable Multivibrator<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3 V to 15 V<\/td>\n<\/tr>\n
Triggering<\/td>\nPositive or Negative Edge<\/td>\n<\/tr>\n
Retriggerable<\/td>\nYes<\/td>\n<\/tr>\n
\u4f20\u64ad\u5ef6\u8fdf<\/td>\n100 ns (typ at 15V)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Monostable (one-shot) or astable (free-running) operation<\/li>\n
  • Positive- or negative-edge triggering with retriggerable option<\/li>\n
  • True and complemented buffered outputs<\/li>\n
  • Oscillator output available for clock generation<\/li>\n
  • Output pulse width set by single external R and C<\/li>\n
  • Fast recovery time independent of pulse width<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Precision timing and pulse width generation<\/li>\n
    • Frequency generation and clock dividers<\/li>\n
    • Missing pulse detection and watchdog timers<\/li>\n
    • Delay generation in industrial control logic<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The HEF4047BT from Nexperia is a retriggerable monostable\/astable multivibrator in a SOIC-14 package. Part of the HEF4000B CMOS logic family, it provides precision pulse generation with positive\/negative edge triggering and retriggerable operation from 3V to 15V. Key Specifications Function Monostable\/Astable Multivibrator Supply Voltage 3 V to 15 V Triggering Positive or Negative Edge […]<\/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],"tags":[],"chip_brand":[140],"class_list":["post-7165","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-nexperia"],"acf":{"brief_explanation":"Monostable\/astable multivibrator, 3-15V, retriggerable, +\/-edge trigger, SOIC-14, CMOS 4000B","date_code":"","package_case":"SOIC-14 (8.65 x 3.90 x 1.75 mm)","in_stock":9702,"datasheet":"https:\/\/assets.nexperia.com\/documents\/data-sheet\/HEF4047B.pdf","price":"$0.22 @ 1ku","product_introduction":"The HEF4047BT from Nexperia is a retriggerable monostable\/astable multivibrator in a SOIC-14 package, belonging to the HEF4000B CMOS logic family. The device can be configured as either a positive-edge or negative-edge triggered monostable multivibrator, or as a free-running astable multivibrator. The output pulse width is programmed by selection of external resistor (Rt) and capacitor (Ct). The device features true and complemented buffered outputs, a dedicated oscillator output, and a master reset (MR) input. In monostable mode, the output pulse width is independent of trigger pulse duration. The retriggerable option allows pulse-width expansion by applying a common pulse to the RETRIGGER and +TRIGGER inputs. In astable mode, the device operates as a free-running or gateable oscillator with 50% duty cycle at the true\/complement outputs. The external counter option enables very long pulse widths using small RC components.","working_principle":"The HEF4047BT uses CMOS logic to implement monostable and astable timing functions. (1) Monostable Mode: An external capacitor (Ct) is connected between CTC and RCTC pins, and an external resistor (Rt) between RTC and RCTC. When triggered by a positive edge on +TRIGGER (with -TRIGGER low) or a negative edge on -TRIGGER (with +TRIGGER high), the output pulse begins. The pulse width is determined by the RC time constant: tw = 2.48 x Rt x Ct. (2) Astable Mode: A high level on the ASTABLE input enables free-running oscillation. The oscillation period is: T = 4.4 x Rt x Ct. The oscillator output (pin 13) provides a signal at twice the frequency of the main output. (3) Retriggerable: Applying a common pulse to both RETRIGGER and +TRIGGER extends the output pulse. The output remains high as long as retrigger pulses arrive before the current pulse times out. (4) Master Reset: A high level on MR terminates the output pulse immediately and prevents output during power-on conditions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>CTC<\/td>Analog<\/td>External capacitor connection<\/td><\/tr>
      2<\/td>RTC<\/td>Analog<\/td>External resistor connection<\/td><\/tr>
      3<\/td>RCTC<\/td>Analog<\/td>Common RC junction<\/td><\/tr>
      4<\/td>ASTABLE<\/td>Input<\/td>Astable enable (active high)<\/td><\/tr>
      5<\/td>ASTABLE<\/td>Input<\/td>Astable complement enable<\/td><\/tr>
      6<\/td>-TRIGGER<\/td>Input<\/td>Negative-edge trigger input<\/td><\/tr>
      7<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>
      8<\/td>+TRIGGER<\/td>Input<\/td>Positive-edge trigger input<\/td><\/tr>
      9<\/td>MR<\/td>Input<\/td>Master reset (active high)<\/td><\/tr>
      10<\/td>O<\/td>Output<\/td>True output<\/td><\/tr>
      11<\/td>O<\/td>Output<\/td>Complement output<\/td><\/tr>
      12<\/td>RETRIGGER<\/td>Input<\/td>Retrigger input<\/td><\/tr>
      13<\/td>OSC OUT<\/td>Output<\/td>Oscillator output (2x frequency)<\/td><\/tr>
      14<\/td>VDD<\/td>Power<\/td>Supply voltage (3-15V)<\/td><\/tr><\/table>","application_scenarios":"
      • Precision timing and pulse width generation with external RC programming<\/li>
      • Frequency generation and clock dividers in astable mode<\/li>
      • Missing pulse detection and watchdog timers with retrigger function<\/li>
      • Delay generation in industrial control logic with master reset<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>CD4047BE<\/td>DIP-14<\/td>Through-hole equivalent<\/td><\/tr>
        onsemi<\/td>MC14047BDR2G<\/td>SOIC-14<\/td>Direct equivalent<\/td><\/tr>
        TI<\/td>CD74HC4047EE4<\/td>DIP-14<\/td>High-speed CMOS version<\/td><\/tr>
        Nexperia<\/td>74HC123D<\/td>SOIC-16<\/td>Dual monostable, HC family<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7165","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=7165"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7165\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7165"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}