PCF8883T/1,118

Overview

The PCF8883T/1,118 is a capacitive touch and proximity switch IC from NXP Semiconductors. It detects changes in static capacitance on a remote sensing plate using a patented digital method with continuous auto-calibration. The device operates within a supply voltage range of 3 V to 9 V and supports an ambient temperature range of -40 °C to +85 °C. Typical idle supply current is 3 µA at 5 V. The input capacitance range is 10 pF to 60 pF. It features an open-drain output capable of driving loads up to 20 mA. The component is housed in an SOIC8 plastic small outline package (SOT96-1) with 8 leads.

Feature Summary

• Patented digital processing method for detecting static capacitance changes
• Continuous automatic calibration compensates for slow capacitance variations
• Configurable output modes including push-button, toggle, and pulse
• Internal voltage regulator provides stable operation across wide supply ranges

Applications

• Proximity detection in mobile phones and portable entertainment units
• Vandal-proof switches for transportation upholstery or handles
• Hermetically sealed keys on keyboards
• Switches integrated into sanitary metal parts like taps

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component for applications requiring long-distance sensing via coaxial cables or high sensitivity. Ensure the total input capacitance remains within the specified range for optimal performance. Consider the output configuration requirements when designing the TYPE pin circuitry.

Part Context

This part belongs to the PCF8883 family of capacitive touch and proximity switches. The T/1 variant specifically denotes the SOIC8 package version supplied in tape and reel format. Other variants include the US version in a wafer level chip-size package.

Replacement Considerations

No direct public substitute part numbers are documented in the provided datasheet. Designers should evaluate functional compatibility regarding input capacitance ranges and output drive capabilities if considering alternative components.