SN74HC258PW

Overview

The SN74HC258PW 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 drive capability, supporting up to 15 LSTTL loads, with output currents of ±6 mA at 5 V. Typical propagation delay is 12 ns at 5 V. It includes an active-low strobe input that forces outputs into a high-impedance state when asserted. The component is housed in a 16-pin TSSOP package.

Feature Summary

• Provides four independent multiplexing channels controlled by a common address select input
• Features 3-state outputs that interface directly with system buses without loading data lines
• Inverts the selected data path from the inputs to the outputs
• Operates across a wide voltage range suitable for various digital logic families

Applications

• Bus interface applications connecting multiple data sources
• High-performance systems requiring signal selection from multiple inputs
• Data routing in bus-oriented architectures

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest Package Option Addendum to confirm production status and material specifications. Ensure the procurement channel sources parts matching the exact SN74HC258PW designation to guarantee compatibility with the specified TSSOP-16 footprint and electrical characteristics defined in the official datasheet.

Selection Notes

Select this component when inverted multiplexing functionality is required for 4-bit data paths. Compare against the SN74HC257 if non-inverted outputs are needed instead. Consider the HC series speed and power consumption relative to LSTTL requirements. Verify that the 3-state output control aligns with the system's bus enable logic and timing constraints.

Part Context

This part belongs to the SNx4HC257/258 family of quadruple 2-line to 1-line data selectors. It shares the same pinout and general architecture as the SN74HC257 but differs in output polarity. The PW suffix indicates a Thin Shrink Small Outline Package (TSSOP) with 16 pins, designed for surface-mount assembly.

Replacement Considerations

SN74HC257PWR offers identical pinout and packaging with non-inverted outputs.