{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX4729ELT+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX4729ELTT","canonicalUrl":"https://icboms.com/analog-devices/MAX4729ELTT","factsUrl":"https://icboms.com/api/mcp/products/MAX4729ELT%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX4729ELT+T SPDT analog switch, 300MHz -3dB bandwidth, 5.5Ohm on-resistance, 1.8V-5.5V supply, 6-µDFN (1.5x1) package, Tape & Reel.","salesMarkdown":"## Active production, 300 MHz bandwidth, 5.5 Ohm Ron The MAX4729ELT+T: The -3 dB bandwidth of 300 MHz makes it suitable for high-speed signal routing in video, RF, or data acquisition paths where the switch's insertion loss and flatness matter up to that frequency. Maximum on-resistance is 5.5 Ohm, with channel-to-channel matching of 50 mOhm — the matching figure tells you how closely the two switch legs track each other, which matters for gain accuracy in differential or matched-gain stages. ## 6-µDFN package and rework realities That 1.5 mm x 1.0 mm footprint is small — the exposed pad underneath is the thermal path and the ground connection. Will it survive the hot air? Yes, but the pad needs a solid solder paste deposit and the board's thermal relief should be minimal to keep the pad temperature even during reflow. Surface mount only — no through-hole variant exists. The tape-and-reel or cut-tape packaging suits pick-and-place assembly; cut tape works for prototype or low-volume builds. ## Switching speed, charge injection, and crosstalk Maximum switch times are 45 ns turn-on and 26 ns turn-off. That 26 ns off time is the faster edge — the switch opens quicker than it closes, which is typical for CMOS analog switches and matters for break-before-make timing in multiplexed applications. Charge injection is 3 pC typical. In a sample-and-hold or integrator front-end, that 3 pC dumps onto the hold capacitor each time the switch opens, creating a voltage step equal to Q/C. For a 10 pF hold cap, that is a 300 mV glitch — budget for it in the settling time. Crosstalk is -67 dB at 1 MHz, meaning isolation between the two channels at that frequency is better than 2000:1. For audio or low-frequency analog multiplexing, this is clean; at 300 MHz the isolation will be lower, but the -3 dB bandwidth tells you the switch is still passing signal up there. Maximum off-leakage is 2 nA, and off-channel capacitance is 6.5 pF. The 2 nA leakage is negligible for most circuits; the 6.5 pF capacitance loads the source when the switch is off, which can matter for high-impedance sources above 100 kHz.","metaTitle":"MAX4729ELT+T SPDT Analog Switch, 300MHz, 5.5Ohm, 6-µDFN","metaDescription":"MAX4729ELT+T SPDT analog switch from Analog Devices. 300MHz bandwidth, 5.5Ohm on-resistance, 1.8V-5.5V supply. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Crosstalk":"-67dB @ 1MHz","Mounting Type":"Surface Mount","-3db Bandwidth":"300MHz","Package / Case":"6-WFDFN","Switch Circuit":"SPDT","lifecycle_stage":"eol_hot","Charge Injection":"3pC","Number of Circuits":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"6-µDFN (1.5x1)","On-State Resistance (Max)":"5.5Ohm","Switch Time (Ton, Toff) (Max)":"45ns, 26ns","Voltage - Supply, Single (V+)":"1.8V ~ 5.5V","Current - Leakage (IS(off)) (Max)":"2nA","Multiplexer/Demultiplexer Circuit":"2:1","Channel Capacitance (CS(off), CD(off))":"6.5pF","Channel-to-Channel Matching (ΔRon)":"50mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.87","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.87000","currency":"USD"},{"qty":10,"price":"$3.47200","currency":"USD"},{"qty":25,"price":"$3.28240","currency":"USD"},{"qty":100,"price":"$2.84460","currency":"USD"},{"qty":250,"price":"$2.69876","currency":"USD"},{"qty":500,"price":"$2.42160","currency":"USD"},{"qty":1000,"price":"$2.04231","currency":"USD"},{"qty":2500,"price":"$1.94020","currency":"USD"},{"qty":5000,"price":"$1.86726","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4a700b1cef85f8194ae23c188c9946f1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the MAX4729ELT+T come in?","answer":"It comes in a 6-WFDFN package, specifically a 6-µDFN measuring 1.5 mm x 1.0 mm. The package is surface-mount only, supplied in tape and reel or cut tape options."},{"question":"What is the crosstalk specification of the MAX4729ELT+T?","answer":"Crosstalk is rated at -67 dB at 1 MHz, providing good channel-to-channel isolation for analog signals at that frequency."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX4729ELTT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX4729ELTT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}