Product Overview: CD54HC238F3A

The CD54HC238F3A is a high-speed CMOS logic 3-to-8 line decoder/demultiplexer designed and manufactured by Texas Instruments. This integrated circuit is part of the HC (High-speed CMOS) family, which is known for combining the speed of LS TTL (Low-power Schottky Transistor-Transistor Logic) with the low power consumption of standard CMOS technologies. The device is specifically engineered for use in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times.

In its typical application, the CD54HC238F3A takes three binary input signals and decodes them into one of eight mutually exclusive outputs. Each output can drive up to 10 LS TTL loads. The high current drive capability and the significant fan-out make this device suitable for interfacing with peripheral units or can be used as input signal expanders.

Key Features

• Logic Type: 3-to-8 Line Decoder/Demultiplexer
• Supply Voltage Range: 2V to 6V
• High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
• Output Current: High - 5.2 mA, Low - 5.2 mA
• Propagation Delay Time: 13 ns at VCC = 5V, CL = 15 pF, TA = 25°C

The CD54HC238F3A's robust design features balanced propagation delay and transition times, which ensures that the device operates with maximum efficiency and reliability. It is also characterized for operation from -55°C to 125°C, making it suitable for the most demanding environmental conditions.

Applications

The versatility of the CD54HC238F3A makes it an ideal choice for a wide range of applications, including:

• Memory decoding or data routing
• Instrumentation
• Telecommunications systems
• Microprocessor support
• Computer peripheral management

With its robust feature set and high-performance capabilities, the CD54HC238F3A from Texas Instruments is a reliable and efficient choice for designers looking to implement 3-to-8 line decoding or demultiplexing in their digital systems.