Description: CD4532 – 8-Bit Priority Encoder IC (DIP-16)

The CD4532 is an 8-input priority encoder with 3-bit binary output, designed using CMOS technology. It accepts 8 active HIGH inputs (D₀ to D₇) and encodes the highest-priority active input to a 3-bit binary code. It includes enable inputs and outputs for easy cascading.

Key Features:

8 input lines (D₀ to D₇)

3-bit binary output (A₀, A₁, A₂)

Highest priority given to D₇ (most significant)

Cascading capability via enable inputs and outputs

Standard DIP-16 package

Wide voltage range: 3V to 15V

Low power CMOS technology

TTL-compatible

Pin Configuration (DIP-16):

Pin No. Name Description

1 D₄ Data Input 4

2 D₅ Data Input 5

3 D₆ Data Input 6

4 D₇ Data Input 7 (Highest Priority)

5 EO̅ Enable Output (Active LOW)

6 GS Group Select (Active HIGH)

7 A₂ Output Bit 2 (MSB)

8 GND Ground

9 A₁ Output Bit 1

10 A₀ Output Bit 0 (LSB)

11 EI̅ Enable Input (Active LOW)

12 D₀ Data Input 0 (Lowest Priority)

13 D₁ Data Input 1

14 D₂ Data Input 2

15 D₃ Data Input 3

16 VDD Positive Supply Voltage

Functional Summary:

Priority Encoding: If multiple inputs are HIGH, the IC outputs the binary code of the highest-numbered active input.

Enable Input (EI̅): When LOW, the IC is enabled. When HIGH, all outputs are disabled.

Enable Output (EO̅): Goes LOW when any input is active and the IC is enabled; used for cascading.

Group Select (GS): Goes HIGH when the encoder is active and at least one input is HIGH.

• 8 input lines (D₀ to D₇)
• 3-bit binary output (A₀, A₁, A₂)
• Highest priority given to D₇ (most significant)
• Cascading capability via enable inputs and outputs
• Standard DIP-16 package
• Wide voltage range: 3V to 15V
• Low power CMOS technology
• TTL-compatible