74HC241PW

Updated: 2026-07-15

Overview

The 74HC241PW is a high-speed CMOS integrated circuit (IC) belonging to the 74HC family, designed as an octal buffer and line driver with 3-state outputs. It is manufactured using silicon-based CMOS technology, ensuring low power consumption while maintaining high noise immunity. This IC is commonly supplied in a TSSOP-20 package, making it suitable for space-constrained PCB designs. The 74HC241PW is widely used in digital electronics for tasks such as signal buffering, bus driving, and interfacing between different logic families. Its compatibility with both CMOS and TTL logic levels makes it particularly valuable in mixed-signal systems. The device operates across a typical supply voltage range of 2V to 6V, with a maximum propagation delay of 15ns at 5V, making it suitable for high-speed digital applications.

Structure and Working Principle

The 74HC241PW consists of eight independent buffer gates arranged in two groups of four, each with separate output enable controls. Each buffer features non-inverting logic (input A produces output Y) with high current capability (up to 7.8mA at 5V supply). The 3-state outputs allow the device to be effectively disconnected from the bus when not selected, preventing bus contention. Internally, the IC uses complementary MOSFET pairs to achieve low power consumption while maintaining high speed. The input stages include protection diodes to guard against electrostatic discharge (ESD) and input voltage spikes. When the output enable (OE) pin is high, the corresponding outputs enter a high-impedance state, effectively disconnecting them from the circuit. This architecture makes the device particularly useful for bus-oriented systems where multiple drivers share common lines.

Key Features

The 74HC241PW offers several notable features that make it popular in digital design. Its CMOS technology provides very low static power consumption (typically 1μA) while maintaining high speed operation. The device features balanced propagation delays and transition times, which helps maintain signal integrity in high-speed digital systems. Another key advantage is its wide operating voltage range (2V to 6V), allowing it to interface with various logic families. The outputs can source or sink up to 7.8mA at 5V, providing sufficient drive capability for most digital applications. The 3-state outputs feature TTL compatibility, making the device suitable for mixed TTL/CMOS systems. Additionally, the 74HC241PW has high noise immunity (typically 30% of VCC), making it reliable in electrically noisy environments.

Application Areas

The 74HC241PW finds extensive use in digital electronics across various industries. In computer systems, it's commonly employed for bus buffering and driving, particularly in memory and peripheral interfaces. Industrial automation systems utilize these buffers for signal conditioning and distribution in control circuits. The telecommunications sector uses these devices for signal routing and isolation in switching equipment. Consumer electronics applications include use in digital displays, where multiple signals need to be distributed without degradation. Automotive electronics also employ these buffers for signal conditioning in various control modules. The device's 3-state capability makes it particularly valuable in bus-oriented architectures where multiple drivers share common lines.

Maintenance and Precautions

Proper handling and usage of the 74HC241PW are essential for reliable operation. Always follow ESD precautions when handling the device, using grounded workstations and wrist straps. The inputs should not be left floating - unused inputs should be tied to either VCC or ground through appropriate resistors. Designers should ensure the power supply voltage does not exceed the maximum rating (7V absolute maximum) and that proper decoupling capacitors (typically 0.1μF ceramic) are placed close to the power pins. When driving capacitive loads, consider adding series resistors to limit output current spikes. For applications with long signal traces, proper termination techniques should be employed to prevent signal reflections that could cause multiple switching.

B2B Procurement Guide

When procuring 74HC241PW ICs in bulk, several factors should be considered. Verify the manufacturer's authenticity and quality certifications, as counterfeit components are common in the semiconductor market. The TSSOP-20 package is standard, but confirm the exact package dimensions if board space is critical. Consider ordering samples for testing before large purchases. Lead times can vary significantly (typically 4-12 weeks), so plan procurement accordingly. Some suppliers offer programming or testing services for additional quality assurance. For high-reliability applications, consider purchasing components with extended temperature range ratings (-40°C to +125°C) or from automotive-grade qualified suppliers. Always request manufacturer's datasheets and certificates of conformance with your orders.