Product Overview: 74AHCT138D by NXP

The 74AHCT138D is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). Manufactured by NXP Semiconductors, a leader in the electronics industry, this integrated circuit is a 3-to-8 line decoder/demultiplexer featuring three binary select inputs (A0, A1, and A2), an enable input (E), and eight mutually exclusive outputs (Y0 to Y7).

Designed for multiplexing and data-routing applications, the 74AHCT138D stands out for its robust performance and versatility. The device is capable of operating in a wide range of temperatures, making it suitable for a variety of challenging industrial environments. With its advanced CMOS technology, it offers a reduced power consumption compared to traditional TTL devices, which is essential for energy-efficient designs.

Key Features:

• Decodes a 3-bit Address to 8-bit Data
• Wide voltage range: 4.5V to 5.5V
• High noise immunity
• Low power dissipation: ICC = 4 µA (max) at TA = 25°C
• Complies with JEDEC standard no. 7A
• ESD protection:
  • HBM JESD22-A114E exceeds 2000 V
  • MM JESD22-A115-A exceeds 200 V
• Latch-up performance exceeds 250 mA per JESD 78, Class II
• Multiple package options

Applications:

The 74AHCT138D is ideal for use in high-performance memory-decoding or data-routing applications, where the selection of multiple target lines from a single input line is required. It is commonly used in:

• Computers and computer peripherals
• Communication systems
• Data multiplexers
• Control systems
• Alarm systems

The device is supplied in a 16-pin plastic SO package, referred to as SO16, which ensures a compact footprint on printed circuit boards. Its lead-free, RoHS-compliant design also makes it an environmentally responsible choice for modern electronic applications.

With its powerful decoding capabilities and energy-efficient operation, the 74AHCT138D from NXP Semiconductors is a reliable and cost-effective solution for designers looking to streamline their digital logic operations.