Description: This package contains a set of gates that can be programmed to perform any common 8-input function or combined 4-input function. The 8-input functions are, AND/NAND-OR/NOR. The combined two 4-input functions are, OR/AND, OR/NAND, AND-OR, AND/NOR.
Functional Diagram and/or Package:
Pin Names:
Vdd - Positive Supply Voltage [3V to 15V]
Vss - Ground
A, B, C, D, E, F, G, H - Inputs
Ka, Kb, Kc - Control Lines
Kd - Tri-state Control
EX - Expand
J – Output
Truth Table
Operation Mode:
The logic levels applied to the control lines Ka, Kb, and Kc determine the function performed by the device [see the truth table).
Kd determines the tri-state of the output. When in the “0” logic level, the output goes to a high-impedance state.
The EX [Expand] input is used to increase the number of inputs. Two 4048 can be cascaded by providing a 16-input multifunction gate.
Electrical Characteristics:
Other Devices:
Devices With specific functions can be found in this list.
Applications:
Logic Function Selector
General Purpose Logic [Encoding/Decoding]
Digital Control of Logic
Observations:
When Expand is not used it must be connected to Vss.
