SN74LVC158APWR

Overview

The SN74LVC158A is a quadruple 2-to-1 digital multiplexer with inverted outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 1.1V to 3.6V and features over-voltage tolerant inputs supporting up to 5.5V independent of VCC. The device includes four channels controlled by shared strobe (G) and select (A/B) inputs. It supports partial-power-down via back drive protection (Ioff). Electrical characteristics include a maximum propagation delay of 6.4ns at 3V and high push-pull output drive strength of ±24mA at 3.3V. The component is available in TSSOP-16 packaging.

Feature Summary

• Contains four independent 2-to-1 multiplexers with inverted outputs controlled by shared logic inputs.
• Features over-voltage tolerant inputs that support signal levels up to 5.5V regardless of the supply voltage.
• Provides balanced CMOS push-pull outputs capable of sinking and sourcing similar currents for fast edge transitions.
• Supports partial-power-down modes through back drive protection capabilities.

Applications

• Data selection between multiple sources
• Multiplexing signals in digital systems
• Switching data buses between source devices

Procurement Notes

Verify the specific package variant against the datasheet mechanical drawings, as the PW suffix denotes TSSOP-16. Confirm input voltage tolerance requirements match the 5.5V specification if interfacing with higher voltage logic. Ensure layout guidelines regarding unused inputs and decoupling capacitors are followed to maintain signal integrity and prevent oscillation during operation.

Selection Notes

Select this component when a system requires multiple independent data paths to be routed to a common destination using a single control line. The wide operating voltage range allows compatibility with various low-voltage logic families. Consider the propagation delay specifications relative to the system clock speed to ensure timing margins are met under the intended load capacitance conditions.

Part Context

This part belongs to the SN74LVC158A family of quadruple 2-line to 1-line data selectors. It is designed for applications requiring efficient routing of digital signals across different voltage domains. The device utilizes standard CMOS input structures and balanced push-pull outputs to ensure reliable performance across the specified temperature range.

Replacement Considerations

Check for SN74LVC158APW which shares the same functional logic but may differ in packaging configuration. Verify pinout compatibility before substitution to ensure correct connection of power, ground, and signal lines.