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HEF4021BT

Name: HEF4021BT
Rating: 4.7 (12 reviews)

Counter Shift Registers

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概述

Description

The HEF4021BT is a dual 4-input NAND gate integrated circuit (IC) designed for digital logic applications. It belongs to the CD4000 series of CMOS logic devices, which are known for their low power consumption and high noise immunity. The HEF4021BT features two independent gates, each capable of accepting four input signals and producing a single output.
This IC operates within a voltage range of 3V to 15V, making it suitable for various electronic projects and systems. Its wide voltage range allows for compatibility with both low-power and standard logic levels. The HEF4021BT is commonly used in applications requiring simple logic functions, such as combinational logic circuits, timers, and signal processing.
In terms of package, the HEF4021BT typically comes in a 16-pin DIP (Dual In-line Package) format, facilitating easy integration into breadboards and circuit boards. Overall, it serves as an essential component in modern electronics for implementing complex logic operations efficiently.

Features

The HEF4021BT is a dual 4-input NAND gate integrated circuit, part of the HEF4000 series of CMOS logic devices. Key features include:
1. Dual 4-Input NAND Gates: Contains two independent NAND gates that can each accept four inputs.
2. Wide Voltage Range: Operates within a supply voltage range of 3V to 15V, making it versatile for various applications.
3. Low Power Consumption: CMOS technology ensures low static power consumption, enhancing energy efficiency.
4. High Noise Margin: Provides improved noise immunity, making it reliable in noisy environments.
5. Temperature Range: Designed to operate within a temperature range of -55°C to +125°C, suitable for industrial applications.
6. Fast Switching Speed: Capable of high-speed operation, enhancing performance in digital circuits.
7. TTL Compatible: Compatible with TTL (Transistor-Transistor Logic) levels, allowing for easy interfacing with other logic families.
The HEF4021BT is widely used in digital systems for various logic functions and circuit designs.

Package

The HEF4021BT is available in a Dual In-Line Package (DIP) format, specifically the 14-pin DIP. It can also be found in other package types like SOIC (Small Outline IC) depending on the manufacturer.

Pinout

The HEF4021BT is a 4-bit static shift register with an 8-pin dual in-line package (DIP) configuration. The pin count and their functions are as follows:
1. Pin 1 (Q0): Output for the least significant bit (LSB).
2. Pin 2 (Q1): Output for the second bit.
3. Pin 3 (Q2): Output for the third bit.
4. Pin 4 (Q3): Output for the most significant bit (MSB).
5. Pin 5 (Shift/Load): Control input for shifting or loading data.
6. Pin 6 (Clock): Input for clock signal to control data shifting.
7. Pin 7 (Reset): Asynchronous reset input to clear the register.
8. Pin 8 (VSS): Ground connection (0V).
The HEF4021BT operates in both shift and load modes, allowing serial data input and parallel output. It is widely used in digital applications for data manipulation.

Manufacturer

The HEF4021BT is manufactured by NXP Semiconductors, a global semiconductor company known for its broad portfolio of integrated circuits and microcontrollers. NXP specializes in automotive, industrial, IoT (Internet of Things), and mobile applications. Originally part of Philips, NXP became an independent company in 2006 and has since focused on innovations in secure connectivity and processing solutions. The HEF4021BT specifically is a dual 4-channel analog multiplexer/demultiplexer, commonly used in various electronic applications.

Application

The HEF4021BT is a dual 4-input NAND gate used in various applications, including digital logic circuits, signal conditioning, and data processing. It can be employed in arithmetic operations, control systems, and as part of complex programmable logic devices. Additionally, it serves in timer circuits, oscillators, and frequency dividers in communication systems. Its versatility makes it suitable for both consumer electronics and industrial applications.

Equivalent

The HEF4021BT is a dual 4-bit static shift register. Equivalent products include the 74HC Shift Register series (e.g., CD4015, 74HC595) and the 74LS series (e.g., 74LS164). However, specific characteristics like voltage levels and speed may vary, so it's essential to check datasheets for compatibility.