CD4028 (Binary Decoder/Demultiplexer)

The CD4028 is a BINARY DECODER/DEMULTIPLEXER integrated circuit (IC) from Texas Instruments. It is part of the 4000 series of CMOS (Complementary Metal-Oxide-Semiconductor) logic ICs, which are commonly used in digital electronics due to their low power consumption and wide voltage range.

Key Features of the CD4028:

1. Function:

• The CD4028 is a BINARY DECODER with Demultiplexer functionality. It converts a 4-bit binary input into a one-out-of-sixteen output.
• It takes a 4-bit input and selects one of 16 possible output lines to be "active" or "high" based on the binary value at the input.

1. Input/Output:

• The IC has 4 binary input lines (A, B, C, D) which take a 4-bit binary value.
• It has 16 output lines (Y0 to Y15), and only one of them will be active (high) at a time, depending on the binary input value.
• The active output is determined by the binary value applied to the inputs.
• The output lines are typically active low (i.e., they go to a low voltage when selected).

1. Control Pins:

• Enable (E): The enable pin (E) allows you to enable or disable the outputs. When the enable pin is low, all outputs are disabled (inactive), and no output is selected.
• Inhibit (I): This pin is used to inhibit or disable certain outputs selectively when needed.

1. Voltage Range:

• The CD4028 operates over a wide voltage range of 3V to 15V, which makes it compatible with many logic systems, including TTL (Transistor-Transistor Logic) and CMOS systems.

1. Low Power Consumption:

• As part of the CMOS family, the CD4028 has low power consumption, which is one of the key benefits of CMOS technology.

1. Package Options:

• The CD4028 is available in various package types, including DIP (Dual In-Line Package) and SMD (Surface-Mount Device) packages.

1. Temperature Range:

• The CD4028 is designed to work in a wide temperature range, typically from -55°C to +125°C, making it suitable for industrial and automotive applications.