{"id":7942,"date":"2026-06-28T06:01:42","date_gmt":"2026-06-28T06:01:42","guid":{"rendered":"https:\/\/materialparts.com\/cd4066be\/"},"modified":"2026-06-28T11:45:34","modified_gmt":"2026-06-28T11:45:34","slug":"cd4066be","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/cd4066be\/","title":{"rendered":"CD4066BE"},"content":{"rendered":"

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

The CD4066BE from Texas Instruments is a CMOS quad bilateral switch with 125\u03a9 on-state resistance, 10pA off-state leakage, and 40MHz bandwidth, pin-compatible with CD4016B in a 14-pin PDIP package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Number of Switches<\/td>\n4 (independent SPST)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n3V to 18V<\/td>\n<\/tr>\n
On-State Resistance<\/td>\n125\u03a9 typical @ VDD=15V, 470\u03a9 @ VDD=5V<\/td>\n<\/tr>\n
On-Resistance Matching<\/td>\nWithin 5\u03a9 @ VDD=15V<\/td>\n<\/tr>\n
Off-State Leakage<\/td>\n10pA typical @ VDD=10V<\/td>\n<\/tr>\n
Signal Range<\/td>\nFull VDD swing (0V to VDD)<\/td>\n<\/tr>\n
Bandwidth (On)<\/td>\n40MHz typical<\/td>\n<\/tr>\n
Crosstalk<\/td>\n-50dB typical @ 8MHz<\/td>\n<\/tr>\n
Distortion<\/td>\n<0.5% typical @ 1kHz, 5Vp-p<\/td>\n<\/tr>\n
Control Input Impedance<\/td>\n10^12 \u03a9 typical<\/td>\n<\/tr>\n
On\/Off Ratio<\/td>\n80dB typical @ 10kHz<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +125\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
  • Four independent bilateral (bidirectional) switches<\/li>\n
  • Pin-compatible with CD4016B (lower RON)<\/li>\n
  • 125\u03a9 on-state resistance @ 15V<\/li>\n
  • Ultra-low off-state leakage: 10pA typical<\/li>\n
  • Flat on-resistance over full signal range<\/li>\n
  • High linearity: <0.5% distortion<\/li>\n
  • 40MHz bandwidth<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Analog signal switching and multiplexing<\/li>\n
    • Programmable gain amplifier<\/li>\n
    • Digital control of analog signals<\/li>\n
    • Sample-and-hold (CD4016B preferred)<\/li>\n
    • Chopper\/modulator circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The CD4066BE from Texas Instruments is a CMOS quad bilateral switch with 125\u03a9 on-state resistance, 10pA off-state leakage, and 40MHz bandwidth, pin-compatible with CD4016B in a 14-pin PDIP package. Key Specifications Number of Switches 4 (independent SPST) Supply Voltage 3V to 18V On-State Resistance 125\u03a9 typical @ VDD=15V, 470\u03a9 @ VDD=5V On-Resistance Matching […]<\/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-7942","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"Quad bilateral analog switch, 125\u03a9 RON, 40MHz, 3-18V, PDIP-14","date_code":"","package_case":"PDIP-14 (19.3 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)","in_stock":6000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/cd4066b.pdf","price":"$0.320 @ 1ku","product_introduction":"The CD4066BE from Texas Instruments is a quad bilateral (bidirectional) analog switch containing four independent single-pole single-throw (SPST) switches in a 14-pin PDIP package. Each switch is controlled by a separate active-HIGH enable input; when the control is HIGH, the switch is ON (conducting), and when LOW, the switch is OFF (high impedance). The 125\u03a9 typical on-state resistance at VDD=15V is significantly lower than the older CD4016B (which has ~400\u03a9), and the on-resistance remains relatively flat over the full signal input range (0V to VDD) due to the internal biasing of the n-channel well. The bilateral nature means signals can flow in either direction through the switch \u2014 there is no designated input or output. The 10pA off-state leakage is extremely low, making the 4066 suitable for high-impedance signal routing. The 40MHz bandwidth supports audio and medium-frequency signal switching. The BE suffix denotes the PDIP-14 package with full temperature range (-55\u00b0C to +125\u00b0C).","working_principle":"Each switch in the CD4066BE consists of a parallel pair of PMOS and NMOS transistors (transmission gate) controlled by complementary gate signals. When the control input is HIGH (at VDD), the NMOS gate is driven HIGH and the PMOS gate is driven LOW (via internal inverter), turning both transistors ON and creating a low-resistance path between the two signal terminals. When the control is LOW, both transistors are OFF and the signal path is open (high impedance). The parallel NMOS+PMOS structure ensures that the on-resistance remains relatively constant over the full signal range: the NMOS conducts well for signals near VSS, while the PMOS conducts well for signals near VDD. The internal well-biasing circuit connects the n-channel substrate to the input (when ON) or to VSS (when OFF), eliminating threshold voltage modulation that would cause on-resistance variation with signal level. The control input has extremely high impedance (10^12\u03a9), drawing negligible current from the driving logic. Since the switch is bilateral, either terminal can be the input or output \u2014 the signal can pass in either direction. The 10pA off-state leakage means virtually no signal passes when the switch is open, giving 80dB on\/off ratio at 10kHz.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>1IN\/OUT<\/td>Bidirectional<\/td>Switch 1 signal terminal A<\/td><\/tr>\n
      2<\/td>1OUT\/IN<\/td>Bidirectional<\/td>Switch 1 signal terminal B<\/td><\/tr>\n
      3<\/td>2OUT\/IN<\/td>Bidirectional<\/td>Switch 2 signal terminal B<\/td><\/tr>\n
      4<\/td>2IN\/OUT<\/td>Bidirectional<\/td>Switch 2 signal terminal A<\/td><\/tr>\n
      5<\/td>2CTRL<\/td>Input<\/td>Switch 2 control (HIGH=ON)<\/td><\/tr>\n
      6<\/td>3CTRL<\/td>Input<\/td>Switch 3 control (HIGH=ON)<\/td><\/tr>\n
      7<\/td>VSS<\/td>Power<\/td>Ground (0V)<\/td><\/tr>\n
      8<\/td>3IN\/OUT<\/td>Bidirectional<\/td>Switch 3 signal terminal A<\/td><\/tr>\n
      9<\/td>3OUT\/IN<\/td>Bidirectional<\/td>Switch 3 signal terminal B<\/td><\/tr>\n
      10<\/td>4OUT\/IN<\/td>Bidirectional<\/td>Switch 4 signal terminal B<\/td><\/tr>\n
      11<\/td>4IN\/OUT<\/td>Bidirectional<\/td>Switch 4 signal terminal A<\/td><\/tr>\n
      12<\/td>4CTRL<\/td>Input<\/td>Switch 4 control (HIGH=ON)<\/td><\/tr>\n
      13<\/td>1CTRL<\/td>Input<\/td>Switch 1 control (HIGH=ON)<\/td><\/tr>\n
      14<\/td>VDD<\/td>Power<\/td>Positive supply (3V to 18V)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • 4-Channel Mux:<\/strong> Four inputs to one output (common terminal); MCU controls one switch at a time; selects one of 4 analog signals<\/li>\n
      • PGA (Programmable Gain):<\/strong> Switches select different feedback resistors around an op-amp; digital control sets gain<\/li>\n
      • Audio Switch:<\/strong> Routes audio signals between sources; low distortion (<0.5%) preserves audio quality<\/li>\n
      • Chopper:<\/strong> Switch toggles at high frequency, alternately connecting and disconnecting signal; creates amplitude modulation<\/li>\n
      • Logic-Level Mux:<\/strong> Switches digital signals between circuits; 40MHz bandwidth supports moderate-speed digital<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Supply<\/th><\/tr>\n
        CD4066BM<\/td>TI<\/td>SOIC-14 surface-mount version with identical logic function and 3-18V range<\/td>SOIC-14<\/td>3-18V<\/td><\/tr>\n
        CD4066BE<\/td>TI<\/td>Through-hole DIP version for prototyping and legacy board repair<\/td>DIP-14<\/td>3-18V<\/td><\/tr>\n
        HEF4066BT<\/td>NXP<\/td>Pin-compatible CMOS version with improved ESD protection and 3-15V supply<\/td>SOIC-14<\/td>3-15V<\/td><\/tr>\n
        MC144066BDR2G<\/td>onsemi<\/td>Pin-compatible equivalent with RoHS compliance and AEC-Q100 automotive option<\/td>SOIC-14<\/td>3-18V<\/td><\/tr>\n
        74HC4066D<\/td>TI\/Nexperia<\/td>HC CMOS version with higher speed and 2-6V supply for modern logic systems<\/td>SOIC-14<\/td>2-6V<\/td><\/tr>\n
        74HC4066N<\/td>TI\/Nexperia<\/td>HC CMOS through-hole version for prototyping with 2-6V supply range<\/td>DIP-14<\/td>2-6V<\/td><\/tr>\n
        74HCT4066D<\/td>Nexperia<\/td>HCT version with TTL-compatible inputs for mixed 5V TTL\/CMOS systems<\/td>SOIC-14<\/td>4.5-5.5V<\/td><\/tr>\n<\/table>\n

        CD4066 is the CMOS 4000-series quad bilateral switch operating over the wide 3-18V supply range. The HEF4066 (NXP) and MC144066 (onsemi) are direct pin-compatible equivalents. For higher speed at the cost of narrower voltage range, the 74HC4066 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\/7942","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=7942"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7942\/revisions"}],"predecessor-version":[{"id":8178,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7942\/revisions\/8178"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7942"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}