CD74ACT238E

Signal Switches, Multiplexers, Decoders Overview

The CD74ACT238E is a high-speed CMOS logic decoder/driver manufactured by Harris Corporation. It belongs to the ACT series and features true outputs with three enable inputs. The device operates on a supply voltage of 3.3V or 5V, ensuring compatibility with standard digital systems. It utilizes a 16-pin Plastic Dual In-line Package (PDIP) for through-hole mounting. The component supports an operating temperature range from -55°C to +125°C, suitable for industrial environments.

Signal Switches, Multiplexers, Decoders Feature Summary

• Features three independent enable inputs for flexible system control
• Provides true output polarity for direct signal interfacing
• Utilizes CMOS technology for low power consumption and high noise immunity

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microprocessor-based systems
• Memory chip select generation
• I/O port selection circuits

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the manufacturer origin as Harris Corporation, noting that this entity has undergone corporate changes. Confirm the package type is PDIP-16 and the series is ACT. Check RoHS compliance status, as older Harris parts may not meet current environmental standards. Ensure the part number suffix 'E' corresponds to the specific tape and reel or tube packaging variant required for your assembly process.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 line decoder with active-high outputs is required. The ACT series offers faster switching speeds compared to standard HC or HCT logic families. Ensure the design accommodates the 3.3V/5V dual-voltage capability. Verify that the through-hole PDIP-16 package fits the PCB layout constraints and that the industrial temperature range meets the operational environment requirements.

Signal Switches, Multiplexers, Decoders Part Context

This component is part of the broader 74ACT logic family, designed for high-speed applications. It serves as a functional equivalent to other industry-standard 3-to-8 decoders but is specifically branded under Harris Corporation's legacy product line. The ACT series bridges the performance gap between older TTL-compatible logic and newer advanced CMOS technologies.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.