SN74HC258DR

Overview

The SN74HC258DR is a quadruple 2-line to 1-line data selector/multiplexer with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features inverted outputs. The device provides high-current inverting outputs capable of driving up to 15 LSTTL loads, with an output drive of ±6 mA at 5 V. Typical propagation delay is 12 ns. It includes four multiplexers controlled by common address select (A/B) and active-low strobe inputs.

Feature Summary

• Provides bus interface capabilities from multiple sources in high-performance systems
• Features low power consumption with maximum ICC of 80 µA
• Includes active-low strobe input to force all outputs into a high-impedance state

Applications

• Bus interface applications connecting multiple data sources
• High-performance system signal routing
• Data selection between two sources for single output line

Procurement Notes

Verify the specific package type and tape-and-reel specifications against the manufacturer's latest orderable addendum. Confirm that the RoHS status and lead finish meet project requirements. Ensure the operating temperature range aligns with environmental conditions. Check for any recent product change notifications or lifecycle status updates before finalizing procurement plans.

Selection Notes

Select this component when inverted logic levels are required for data selection. Compare performance against the SN74HC257 if non-inverted outputs are needed instead. Consider the 3-state output capability for bus sharing applications. Verify that the HC series speed and drive strength suit the target load requirements.

Part Context

This part belongs to the SNx4HC257/258 family of quadruple 2-line to 1-line data selectors/multiplexers. It shares the same functional architecture as the SN74HC257 but differs in output polarity. Both devices utilize the standard HC logic series technology and are available in various surface-mount and through-hole packages.

Replacement Considerations

SN74HC257D serves as a direct functional substitute if non-inverted outputs are acceptable.