The NXP 74HC238AF is a high-speed Si-gate CMOS device that is part of a series of 3-to-8 line decoders/demultiplexers. This integrated circuit is designed to be used in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. In its most common application, it provides three binary select inputs (A0, A1, and A2) and enables one of the eight outputs (Y0 to Y7).

Key Features

• Decodes a 3-bit binary input to one of eight outputs
• Active HIGH mutually exclusive outputs
• Standard 74HC logic family characteristics
• Wide operating voltage range of 2V to 6V
• Low power consumption: 80µA maximum ICC
• Output capability: standard
• High noise immunity
• ESD protection: HBM JESD22-A114E exceeds 2000V, MM JESD22-A115-A exceeds 200V
• Multiple package options

Functional Description

The 74HC238AF is designed for high-speed interfacing and features three enable inputs: two active low (E1 and E2) and one active high (E3). These enable inputs must be at the correct state to enable the device. When enabled, the device decodes the binary input values present at inputs A0 to A2 to one of the eight outputs, Y0 to Y7. Each output can drive up to 10 LSTTL loads. The high drive capability and the ability to provide a very low power dissipation make this device suitable for a wide range of applications.

Applications

The NXP 74HC238AF's ability to decode and demultiplex makes it a versatile component suitable for various applications, including:

• Memory chip select decoding
• Data routing
• Address decoding for memory and port-mapped I/O
• Control systems
• Computer systems
• Embedded systems

Quality & Reliability

NXP Semiconductors is known for its commitment to producing high-quality and reliable components. The 74HC238AF is manufactured under stringent conditions to ensure it meets the industry standards for performance and reliability. This device is suitable for commercial-grade applications and is available in various package types to fit specific design requirements.