Keypad 4*4

4X4 KEYPAD MODULES are available in different sizes and shapes. But they all have same pin configuration. It is easy to make 4X4 KEYPAD by arranging 16 buttons in matrix formation by yourself.

As given in above table a 4X4 KEYPAD will have EIGHT TERMINALS. In them four are ROWS of MATRIX and four are COLUMNS of MATRIX. These 8 PINS are driven out from 16 buttons present in the MODULE. Those 16 alphanumeric digits on the MODULE surface are the 16 buttons arranged in MATRIX formation.

The internal structure of 4X4 KEYPAD MODULE is shown below.

4X4 KEYPAD MODULE Features and Specifications

• Maximum Voltage across EACH SEGMENT or BUTTON: 24V
• Maximum Current through  EACH SEGMENT or BUTTON: 30mA
• Maximum operating temperature: 0°C to + 50°C
• Ultra-thin design
• Adhesive backing
• Easy interface
• Long life.