Analog Devices MAX14778ETP+T dual SP4T analog switch, 1.5 ohm max on-resistance, -103 dB crosstalk @ 100 kHz, 75 MHz -3 dB bandwidth, 3 V to 5.5 V single supply, 20-TQFN exposed pad, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Voltage - supply, single (V+) | 3V ~ 5.5V |
| Current - leakage (IS(off)) | 1µA |
| Operating temperature | -40°C ~ 85°C (TA) |
| -3db bandwidth | 75MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Crosstalk | -103dB @ 100kHz |
| Case | 20-WQFN Exposed Pad |
| Switch circuit | SP4T |
| Charge injection | 1720pC |
| Number of circuits | 2 |
| On-State resistance | 1.5Ohm |
| Switch time (Ton, toff) | 2ms, 1.5ms |
| Multiplexer (Demultiplexer circuit) | 4:1 |
| Channel capacitance (CS(off), CD(off)) | 78pF |
The MAX14778ETP+T is a dual SP4T analog switch — two independent 4:1 multiplexer/demultiplexer circuits in a 20-TQFN package.
The 1.5 ohm max on-resistance keeps signal attenuation low. The -103 dB crosstalk at 100 kHz isolates adjacent channels.
No pin-compatible second source is listed in the available records. The part is a single-source Analog Devices design; for dual-sourcing, verify footprint compatibility with the 20-TQFN (5x5) package and the SP4T × 2 function against any alternate you evaluate.
At 100 kHz, -103 dB crosstalk means that a 1 Vpp signal on one channel couples less than 1 µVpp into an adjacent channel. This is sufficient for 16-bit audio or precision analog multiplexing where channel bleed-through must stay below the noise floor.