4×4 MEMBRANE MATRIX KEYPAD

Think it... Make it... Invent!
SKU: PROD0067

This 16-button keypad provides a useful human interface component for microcontroller projects.

Matrix keypads use a combination of four rows and four columns to provide button states to the host device, typically a microcontroller. Underneath each key is a push button, with one end connected to one row, and the other end connected to one column.

In order for the microcontroller to determine which button is pressed, it first needs to pull each of the four columns (pins 1-4) either low or high one at a time, and then poll the states of the four rows (pins 5-8). Depending on the states of the columns, the microcontroller can tell which button is pressed.

PACKAGE INCLUDES:

1 x 4X4 Membrane Matrix Keypad

TECHNICAL DETAILS

4×4 Membrane Matrix Keypad datasheet

Electronic Characteristics
Circuit Rating 35Vdc, 100mA, 1W
Contact Resistance 10? ~ 500?*
Insulation Resistance 100M?, 100V
Dielectric Strength 250Vrms (50-60Hz 1min)
Electric Shock Jitter less than 5ms
*Varies according to the lead lengths and different from those of the material used

Mechanical Properties
Operating Pressure 170 ~ 397g | 6 ~ 14oz (touch)
Switch travel 0.6 ~ 1.5mm (touch-type)
Key Operating Force 150 – 200 N
Rebound time 1 ms
Life 100 million (times)

Environment Parameters
Operating Temperature -40 to 80 C
Storage Temperature -40 to 80 C