4x4 Keypad

4x4 Matrix Keypad – Compact, Low‑Profile Input Interface

A 4x4 matrix keypad delivers 16 individually addressable switches in a 4‑by‑4 grid, designed for minimal pin counts and clean on/off signals. Its diode‑logic isolation reduces cross‑talk, while the soft‑touch polymer housing allows rapid multiple keying for gaming rigs, industrial panels, or custom handheld controls. With a 22 mm × 22 mm footprint and 1 mm profile, it fits tight PCB layouts without compromising ergonomics.

The device draws under 1 mA at 5 V, supports up to 7 V operation, and each contact can carry 100 mA continuous current. Built‑in diodes and spring contacts eliminate external pull‑ups or diode arrays, saving board space and lowering response latency.

• Key Matrix: 4 rows × 4 columns (16 switches)
• Operating Voltage: Max 7 V (typ. 5 V)
• Contact Current: Up to 100 mA (continuous)
• Common Use Case: Direct interfacing with microcontrollers or FPGAs for menu navigation or numeric input without external debounce logic