74C922 DIP IC 16 Key Keyboard Encoder (74C922 IC)

The 74C922 is a 16-key keyboard encoder integrated circuit designed to interface a 4 × 4 matrix keypad with digital systems. It scans the keypad matrix, detects key presses, and converts the selected key into a 4-bit binary coded output, eliminating the need for complex external scanning logic.

The IC belongs to the CMOS logic family, offering low power consumption, wide operating voltage range, and high noise immunity. It also features key debounce circuitry and data available output for reliable keypad interfacing. The 18-pin DIP package makes it ideal for breadboard prototyping and through-hole PCB designs.

Key Features -

• 16-key matrix keyboard encoder IC

• Supports 4 × 4 keypad matrices

• Encodes key presses into 4-bit binary output

• Built-in key debounce circuitry

• Data Available (DA) output signal

• CMOS logic family with low power consumption

• Standard 18-pin DIP package

Specifications -

• Product Type: Keyboard Encoder IC

• Part Number: 74C922

• Logic Function: 16-Key Keyboard Encoder

• Keyboard Capacity: 16 Keys (4 × 4 Matrix)

• Output Format: 4-Bit Binary Code

• Logic Family: CMOS

• Package Type: DIP-18 (Dual In-Line Package)

• Pin Count: 18

• Operating Voltage: 3V to 15V DC

• Mounting Type: Through Hole

• Technology: CMOS

Applications -

• Matrix keypad interfaces

• Microprocessor systems

• Embedded electronics

• Industrial control panels

• Security access systems

• Digital instrumentation

• Calculator and keypad circuits

• Educational electronics projects