TM9978 Touchpad

The TM9978 is our second-largest touchpad surface after the TM9946. Much larger than a credit card, it is designed to utilize both PS/2® and USB communication protocols. The TM9978’s reliable, proven design combined with its easy-to-use and intuitive operation makes it the ideal choice for many diverse applications. We also offer custom overlays to match your design requirements.


  • Keyboards
  • Touch control pads
  • Industrial control panels
  • Kiosk input devices
  • Medical instruments
  • Security devices
  • Point-of-sale devices
  • Gaming devices


  • Extra-large sensing area
  • Both PS/2 & USB (10-pin connector) compatibility
  • Low power consumption
  • Easy product integration due to thin, lightweight design
  • No maintenance required – Sealable design is immune to moisture, dust and abuse
  • Superior navigation and high responsiveness
  • Windows®-compatible embedded features mean no additional drivers needed

Using our patented GlidePoint® technology, the touchpad is immune to moisture, allowing it to function properly even with water droplets present on the sensor surface.

Power efficiency of any application is improved with an "idle mode," where the touchpad’s current draw is reduced when a finger is not touching its surface.

The touchpad is fully compatible with standard Windows® mouse drivers. No additional driver is required to activate many of its advanced features. Hardware-configurable options on the module allow for taps (function as left-button clicks), corner-taps (function as right-button clicks), vertical scroll (functions as mouse scroll wheel) and more, depending on the specific application.

For custom functionality at the product design stage, we offer software that allows OEMs to enable, disable or personalize advanced settings and/or reprogram the touch sensitive area.

TM9978 - Touchpad component side TM9978 - Touchpad sensor side TM9978 - Touchpad with overlay

Interface PS/2 (with 10-pin cable connector)
USB (with 10-pin cable connector)
Operating Systems Windows® XP, Vista, & 7
Button Support Two (2) mechanical buttons
Sensor Overlay Standard - part no. 50-59-00
Physical Parameters Length: 96.88 mm
Width: 78.23 mm
Thickness: 5.18 mm with all components
Weight: < 32 g (< 1.13 ounces)
Active Sensing Area 92.86 x 74.22 mm
Voltage 5V +/- 10%
Current PS2: 5.0 mA (active)
PS2: 2.8 mA (idle)
PS2: 60-200 uA (sleep)
PS2: 50 uA (shutdown)
USB: 11.1 mA (active)
USB: 10.2 mA (idle)
USB: 225 uA (suspend)
Operating Temperature -40 to 85° Celsius
Operating Humidity 5% to 95% relative humidity (condensing)
Storage Temperature -55 to 150° Celsius
ESD 15kV when properly mounted in bezel
Environmental EMI tolerant and manufactured RoHS compliant
Available Accessories: PS/2 cable: 183 cm (6 feet) - part no. 52-15-30
USB cable: 183 cm (6 feet) - part no. 52-21-00

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