TC334 is a serial touch sensor with 4 independent touch sensing keys. It features autocal for life - no adjustments required, system cost reduction, one-to-one output mode, reliability through reducing system complexity, embedded noise immunity circuit, and low current consumption in IDLE state.
The TC334 serial touch sensor provides four completely independent touch‑sensing keys with auto‑calibration for life and low power consumption in idle mode. It is designed for media players, consumer electronics, home appliances, keypads, and sealed control panels.
The datasheet includes pin diagrams, chip functions, application circuits, analog voltage output details, PCB layout recommendations, absolute maximum ratings, electrical and ESD characteristics, and a package diagram for the SO‑16 package.
| Number of channels | 4 |
|---|---|
| Package type | SO‑16 (RoHS compliant) |
| Operating voltage | 2.5 V to 6.5 V |
| Idle current consumption | 1.0 mA (VCC=5.0 V) |
| Max continuous pin current | ±20 mA |
| Operating temperature range | -40 °C to +85 °C |
| Sensitivity capacitance range | 10 pF to 100 pF |
| Initialization time after power‑on reset | 300 ms |
| Output type | Open‑drain NMOS, high‑impedance or low |
It can control four completely independent touch‑sensing keys.
The chip requires about 300 ms to initialize after power‑on reset.
The device operates from 2.5 V up to 6.5 V.
It is housed in a RoHS‑compliant SO‑16 package.