CD74HC258M

Overview

The CD74HC258M is a high-speed silicon-gate CMOS logic device manufactured by Texas Instruments. It functions as a quad two-input multiplexer featuring three-state outputs. The component is designed to be pin-compatible with low-power Schottky TTL (LSTTL) standards and complies with JEDEC standard no. 7A specifications. It operates within an extended temperature range of -55°C to +125°C, ensuring reliability in demanding environments.

Feature Summary

• Provides four identical multiplexing channels for selecting data from two distinct sources
• Features three-state outputs that interface directly with system buses
• Includes enhanced electrostatic discharge protection exceeding specified voltage thresholds

Applications

• Data routing between multiple sources on a common bus
• Logic implementation of multi-pole switch configurations
• System bus interfacing requiring tri-state control

Procurement Notes

Verify the specific package variant against the datasheet before ordering. Confirm that the operating environment remains within the specified temperature limits. Ensure power supply voltages align with HC series requirements. Check for any recent updates to the official documentation to guarantee current specifications are met during procurement.

Selection Notes

Select this component when a quad multiplexer with tri-state capability is required. It serves as a direct replacement for LSTTL equivalents due to pin compatibility. Consider the extended industrial temperature range if the application involves harsh environmental conditions. Verify input logic levels match the system design constraints.

Part Context

This device belongs to the Texas Instruments 74HC logic family, which utilizes high-speed CMOS technology. The 'M' suffix indicates a specific surface-mount package configuration. It is part of a broader line of multiplexers designed for general-purpose digital logic applications requiring efficient data selection and bus management capabilities.

Replacement Considerations

The CD74HCT258M is a documented alternative within the same product family. Verify voltage level compatibility when substituting, as HCT inputs may differ from HC inputs. Ensure the replacement maintains the required three-state output functionality and physical footprint.