{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD4066BPW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD4066BPW","canonicalUrl":"https://icboms.com/texas-instruments/CD4066BPW","factsUrl":"https://icboms.com/api/mcp/products/CD4066BPW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 4000B series CD4066BPW, quad SPST bilateral analog switch, 240Ohm max on-resistance, 40MHz -3dB bandwidth, 3V to 18V single supply, -55°C to 125°C, 14-TSSOP package, Tube.","salesMarkdown":"## Quad bilateral switch for analog and digital signal routing Each of the four independent switches can pass analog or digital signals up to the full supply rail, with a typical on-state resistance of 240Ohm max and channel-to-channel matching of 5Ohm. The wide single-supply range of 3V to 18V lets it interface directly with 5V logic or higher-voltage analog signals without level shifting. The 40MHz -3dB bandwidth supports switching of composite video, audio, and moderate-speed digital data lines. ## 240Ohm on-resistance — what it means for signal integrity The 240Ohm max on-resistance (Ron) is the series resistance the signal sees through the switch. In a 5V system switching a 10kOhm load, the voltage drop across Ron is about 24mV — negligible for logic levels but a factor if you are routing a precision analog reference or a low-impedance audio line. The 5Ohm channel-to-channel matching (Delta Ron) keeps the attenuation consistent across all four switches, which matters for stereo audio or multi-channel sensor muxing where gain matching is needed. ## Supply flexibility and signal range With a single-supply range of 3V to 18V, the CD4066BPW can be powered from a 5V rail for TTL/CMOS logic switching, or from a 12V or 15V rail for industrial analog signals. The bilateral nature means it conducts equally well in both directions, so it can be used as a multiplexer, demultiplexer, or signal gate. The 8pF channel capacitance (CS(off), CD(off)) keeps the off-state isolation reasonable at lower frequencies, though at 40MHz bandwidth you will see some feedthrough. For a 4000B-series part that has been in production for decades, this is a stable BOM line for new and sustaining designs.","metaTitle":"CD4066BPW Texas Instruments 4000B SPST Switch, 240Ohm","metaDescription":"CD4066BPW is an active 4000B-series quad SPST bilateral switch. 240Ohm max on-resistance, 40MHz bandwidth, -55°C to 125°C range.","metaKeywords":null},"attributes":{"series":"4000B","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"4000B","Crosstalk":"-","Packaging":"Tube","Part Status":"Obsolete","Manufacturer":"Texas Instruments","Mounting Type":"Surface Mount","-3db Bandwidth":"40MHz","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","Switch Circuit":"SPST","lifecycle_stage":"eol_hot","Charge Injection":"-","Number of Circuits":"4","Base Product Number":"CD4066","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"14-TSSOP","On-State Resistance (Max)":"240Ohm","Voltage - Supply, Dual (V±)":"-","Switch Time (Ton, Toff) (Max)":"-","Voltage - Supply, Single (V+)":"3V ~ 18V","Current - Leakage (IS(off)) (Max)":"-","Multiplexer/Demultiplexer Circuit":"1:1","Channel-to-Channel Matching (ΔRon)":"5Ohm","Channel Capacitance (CS(off), CD(off))":"8pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0800","priceTiers":[{"qty":1,"price":"$1.12000","currency":"USD"},{"qty":10,"price":"$0.99800","currency":"USD"},{"qty":25,"price":"$0.94680","currency":"USD"},{"qty":100,"price":"$0.77770","currency":"USD"},{"qty":250,"price":"$0.72700","currency":"USD"},{"qty":500,"price":"$0.64246","currency":"USD"},{"qty":1000,"price":"$0.50721","currency":"USD"},{"qty":2500,"price":"$0.47850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/612a33cdedb94130258531f7fe0d1415.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD4066BPW/alternatives.json"},"ai":{"faq":[{"question":"Can CD4066BPW be used with a 5V supply?","answer":"Yes, the single-supply range is 3V to 18V, so 5V is well within the operating range."},{"question":"Can CD4066BPW switch audio signals?","answer":"Yes, the 40MHz -3dB bandwidth covers the audio spectrum with margin. The 240Ohm on-resistance will cause some attenuation into low-impedance loads, but for line-level signals (10kOhm load or higher) the loss is minimal. The 5Ohm channel matching helps keep stereo balance consistent."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD4066BPW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD4066BPW when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}