16-Key Input: Supports a 4x4 matrix of 16 keys.Built-in Debouncing: Includes internal debounce logic, requiring only a single external capacitor.Two-Key Roll-over: Capable of correctly handling simultaneous key presses.Latching Output: Provides a latched 4-bit binary output corresponding to the last key pressed.Data Available (DAV) Output: Indicates a valid key entry.3-State Outputs: Enables easy expansion and bus operation.LPTTL Compatible: Outputs work with LPTTL logic levels.Wide Supply Range: Operates from 3V to 15V.Low Power Consumption: Designed for efficiency.On-Chip Pull-up Devices: Allows switches with up to 50 k? resistance without external pull-ups.No Diodes in Switch Array: Eliminates the need for diodes in the switch array.Keyboard Scan: Can be implemented with an external clock or capacitor.
