The SN74CBTLV3251 device is a 1-of-8 high-speed FET multiplexer/demultiplexer. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The select inputs (S0, S1, S2) control the data flow. The FET multiplexers/demultiplexers are disabled when the output-enable ( OE) input is high. This device is fully specified for partial-power-down applications using Ioff. The Ioff feature is designed so that damaging current cannot backflow through the device when it is powered down. The device has isolation during power off. To ensure the high-impedance state during power up or power down, OE must be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | SN74CBLTV3251 Low-Voltage 1-OF-8 FET Multiplexer/Demultiplexer datasheet (Rev. J) | PDF | HTML | Jul 15, 2026 |
| Application note | Selecting the Correct Texas Instruments Signal Switch (Rev. E) | PDF | HTML | Jun 2, 2022 | |
| Application note | Multiplexers and Signal Switches Glossary (Rev. B) | PDF | HTML | Dec 1, 2021 | |
| Application brief | Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) | PDF | HTML | Jan 6, 2021 |
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The EVM-LEADED1 board allows for quick testing and bread boarding of TI's common leaded packages. The board has footprints to convert TI's D, DBQ, DCT,DCU, DDF, DGS, DGV, and PW surface mount packages to 100mil DIP headers.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGY) | 16 | Ultra Librarian |
| TSSOP (PW) | 16 | Ultra Librarian |
| SOIC (D) | 16 | Ultra Librarian |
| TVSOP (DGV) | 16 | Ultra Librarian |
| SSOP (DBQ) | 16 | Ultra Librarian |
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