{"id":7989,"date":"2026-06-28T06:32:20","date_gmt":"2026-06-28T06:32:20","guid":{"rendered":"https:\/\/materialparts.com\/cd4018be\/"},"modified":"2026-06-28T11:44:33","modified_gmt":"2026-06-28T11:44:33","slug":"cd4018be","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/cd4018be\/","title":{"rendered":"CD4018BE"},"content":{"rendered":"

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

The CD4018BE from Texas Instruments is a CMOS presettable divide-by-N counter using a 5-stage Johnson counter architecture \u2014 capable of dividing by any integer from 2 to 10 (or higher with cascading) in a 16-pin PDIP package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u529f\u80fd<\/td>\n5-stage Johnson counter, presettable divide-by-N<\/td>\n<\/tr>\n
Technology<\/td>\nCD4000B CMOS<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3V to 18V<\/td>\n<\/tr>\n
Counter Stages<\/td>\n5 (Johnson\/Johnson counter)<\/td>\n<\/tr>\n
Max Clock Frequency<\/td>\n10MHz typical @ VDD=10V<\/td>\n<\/tr>\n
Trigger<\/td>\nPositive edge on CLK<\/td>\n<\/tr>\n
\u91cd\u7f6e<\/td>\nAsynchronous, active HIGH (RST)<\/td>\n<\/tr>\n
Preset<\/td>\n5 individual JAM inputs + PRESET ENABLE (active HIGH)<\/td>\n<\/tr>\n
Outputs<\/td>\nQ1, Q2, Q3, Q4, Q5 (buffered)<\/td>\n<\/tr>\n
Data Input<\/td>\nDATA (serial, for feedback configuration)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nPDIP-16 (19.3 x 9.4mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Johnson counter architecture \u2014 spike-free decoded outputs<\/li>\n
  • Divide by 2, 3, 4, 5, 6, 7, 8, 9, or 10 with simple feedback<\/li>\n
  • 5 individual JAM inputs for presetting<\/li>\n
  • Anti-lock gating ensures correct counting sequence<\/li>\n
  • Schmitt trigger clock input<\/li>\n
  • 3V-18V wide supply range<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Programmable frequency dividers<\/li>\n
    • Frequency synthesizers<\/li>\n
    • Counter\/timer control<\/li>\n
    • Sequence generation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The CD4018BE from Texas Instruments is a CMOS presettable divide-by-N counter using a 5-stage Johnson counter architecture \u2014 capable of dividing by any integer from 2 to 10 (or higher with cascading) in a 16-pin PDIP package. Key Specifications Function 5-stage Johnson counter, presettable divide-by-N Technology CD4000B CMOS Supply Voltage 3V to 18V […]<\/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-7989","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"5-stage Johnson counter, presettable divide-by-N (2-10), CMOS 3-18V, PDIP-16","date_code":"","package_case":"PDIP-16 (19.3 x 9.4 x 4.57mm, 2.54mm pitch, through-hole)","in_stock":2000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/cd4018b.pdf","price":"$0.55 @ 1ku","product_introduction":"The CD4018BE from Texas Instruments is a 5-stage Johnson counter with preset capability, designed for programmable divide-by-N applications. Unlike binary ripple counters that divide only by powers of 2, the CD4018 can divide by any integer from 2 to 10 using simple feedback connections. The Johnson counter architecture produces spike-free outputs (unlike ripple counters) because only one bit changes per clock cycle. The divide ratio is set by feeding back one of the Q outputs (or its complement via a gate) to the DATA input: feed Q5\u0304 back for \u00f710, Q4\u0304 for \u00f78, Q3\u0304 for \u00f76, Q2\u0304 for \u00f74, Q1\u0304 for \u00f72. For odd divisors (\u00f79, \u00f77, \u00f75, \u00f73), a CD4011 gate combines two Q outputs before feeding back to DATA. The 5 JAM inputs (J1-J5) allow the counter to be preset to any Johnson state when PRESET ENABLE is HIGH, enabling programmable counters in frequency synthesizers. Multiple CD4018s can be cascaded for divisors greater than 10. The anti-lock gating ensures the counter always enters a valid Johnson sequence. The BE suffix denotes the PDIP-16 package.","working_principle":"The CD4018BE uses a 5-stage Johnson counter (also called twisted-ring counter). In a Johnson counter, the complement of the last stage is fed back to the first stage. Starting from all zeros: 00000\u219210000\u219211000\u219211100\u219211110\u219211111\u219201111\u219200111\u219200011\u219200001\u219200000. This 10-state cycle naturally divides by 10. The DATA input replaces the feedback when externally connected. For \u00f710: Q5\u0304 \u2192 DATA (10 states). For \u00f78: Q4\u0304 \u2192 DATA (8 states). For \u00f76: Q3\u0304 \u2192 DATA. For \u00f74: Q2\u0304 \u2192 DATA. For \u00f72: Q1\u0304 \u2192 DATA. For odd divisors, a gate is needed: \u00f79 uses Q5\u0304 AND Q1, \u00f77 uses Q4\u0304 AND Q1, \u00f75 uses Q3\u0304 AND Q1, \u00f73 uses Q2\u0304 AND Q1. When PRESET ENABLE is HIGH, the JAM inputs (J1-J5) load directly into the counter stages on the next clock edge, overriding the DATA feedback. This allows starting the count at any state, enabling programmable division. The RESET input (RST=HIGH) clears all stages to 0. The anti-lock gating detects invalid states (Johnson counters can get stuck in unused states) and forces the counter into a valid sequence.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>J5<\/td>Input<\/td>Jam input for stage 5 (preset)<\/td><\/tr>\n
      2<\/td>Q1<\/td>Output<\/td>Stage 1 output<\/td><\/tr>\n
      3<\/td>Q2<\/td>Output<\/td>Stage 2 output<\/td><\/tr>\n
      4<\/td>Q3<\/td>Output<\/td>Stage 3 output<\/td><\/tr>\n
      5<\/td>Q4<\/td>Output<\/td>Stage 4 output<\/td><\/tr>\n
      6<\/td>Q5<\/td>Output<\/td>Stage 5 output<\/td><\/tr>\n
      7<\/td>RST<\/td>Input<\/td>Reset (active HIGH, clears all stages)<\/td><\/tr>\n
      8<\/td>VSS<\/td>Power<\/td>Ground<\/td><\/tr>\n
      9<\/td>CLK<\/td>Input<\/td>Clock (positive edge triggered)<\/td><\/tr>\n
      10<\/td>PE<\/td>Input<\/td>Preset enable (active HIGH, loads J1-J5)<\/td><\/tr>\n
      11<\/td>J1<\/td>Input<\/td>Jam input for stage 1 (preset)<\/td><\/tr>\n
      12<\/td>J2<\/td>Input<\/td>Jam input for stage 2 (preset)<\/td><\/tr>\n
      13<\/td>J3<\/td>Input<\/td>Jam input for stage 3 (preset)<\/td><\/tr>\n
      14<\/td>J4<\/td>Input<\/td>Jam input for stage 4 (preset)<\/td><\/tr>\n
      15<\/td>DATA<\/td>Input<\/td>Serial data input (feedback for divide ratio)<\/td><\/tr>\n
      16<\/td>VDD<\/td>Power<\/td>Supply (3V to 18V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Divide-by-10:<\/strong> Q5 through inverter (or CD4069) \u2192 DATA; CLK input frequency; Q5 = CLK\/10; no external gate needed if Q5\u0304 is available via inverter<\/li>\n
      • Divide-by-7 (Odd):<\/strong> CD4011 NAND gate: Q4 AND Q1 \u2192 invert \u2192 DATA; produces 7-state cycle<\/li>\n
      • Programmable Divider:<\/strong> Switch selects which Q output feeds back to DATA; 5-position switch = divide by 2,4,6,8,10<\/li>\n
      • Frequency Synthesizer:<\/strong> Three CD4018s cascaded; each decade set via JAM inputs from thumbwheel switch; divide by 2-999<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Supply<\/th><\/tr>\n
        CD4018BM<\/td>TI<\/td>SOIC-16 surface-mount version with identical logic function and 3-18V range<\/td>SOIC-16<\/td>3-18V<\/td><\/tr>\n
        CD4018BE<\/td>TI<\/td>Through-hole DIP version for prototyping and legacy board repair<\/td>DIP-16<\/td>3-18V<\/td><\/tr>\n
        HEF4018BT<\/td>NXP<\/td>Pin-compatible CMOS version with improved ESD protection and 3-15V supply<\/td>SOIC-16<\/td>3-15V<\/td><\/tr>\n
        MC144018BDR2G<\/td>onsemi<\/td>Pin-compatible equivalent with RoHS compliance and AEC-Q100 automotive option<\/td>SOIC-16<\/td>3-18V<\/td><\/tr>\n
        74HC190D<\/td>TI\/Nexperia<\/td>HC CMOS version with higher speed and 2-6V supply for modern logic systems<\/td>SOIC-16<\/td>2-6V<\/td><\/tr>\n
        74HC190N<\/td>TI\/Nexperia<\/td>HC CMOS through-hole version for prototyping with 2-6V supply range<\/td>DIP-16<\/td>2-6V<\/td><\/tr>\n
        74HCT190D<\/td>Nexperia<\/td>HCT version with TTL-compatible inputs for mixed 5V TTL\/CMOS systems<\/td>SOIC-16<\/td>4.5-5.5V<\/td><\/tr>\n<\/table>\n

        CD4018 is the CMOS 4000-series presettable divide-by-n counter operating over the wide 3-18V supply range. The HEF4018 (NXP) and MC144018 (onsemi) are direct pin-compatible equivalents. For higher speed at the cost of narrower voltage range, the 74HC190 HC\/HCT families offer significantly faster propagation delay and lower power consumption at 2-6V. Surface-mount versions use the BM\/M suffix (SOIC); through-hole versions use the BE suffix (DIP).<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7989","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=7989"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7989\/revisions"}],"predecessor-version":[{"id":8148,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7989\/revisions\/8148"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7989"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}