SN74HC151NSR

Overview

The SN74HC151NSR is an 8-line to 1-line data selector/multiplexer from the Texas Instruments SN74HC series. It provides complete binary decoding to select one of eight data sources. The device operates with a supply voltage range of 2 V to 6 V and features low input current of 1 μA maximum. It includes a strobe (G) input that must be at a low logic level to enable the selected input. The standard output (Y) and inverse output (W) are provided. The component is designed for surface mount installation in a TSSOP-16 package, suitable for applications requiring high-speed operation and low power consumption.

Feature Summary

• Provides complete binary decoding for selecting one of eight data sources
• Includes a strobe input that disables the device when set to a high logic level
• Features low input current characteristics for reduced power consumption
• Offers both standard and inverse outputs for flexible signal routing

Applications

• Data selection and routing
• Demultiplexing operations
• Boolean function generation
• Parallel-to-serial conversion

Procurement Notes

Verify the specific suffix NSR corresponds to the TSSOP-16 package and reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the operating temperature range meets your environmental specifications. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when an 8-channel multiplexer with HC logic speed and CMOS input characteristics is required. Consider the TSSOP-16 package size constraints and the 2 V to 6 V supply voltage range. Evaluate if the propagation delay and output drive capabilities meet your system timing and load requirements compared to other logic families.

Part Context

This device belongs to the SN74HC family of high-speed CMOS logic devices. It functions as an 8-to-1 line data selector or multiplexer. The SN74HC series is known for wide operating voltage ranges and compatibility with various logic standards. This specific part integrates eight data inputs, three address inputs, and a strobe control into a single integrated circuit.

FAQ

How does the strobe input affect the operation of the SN74HC151NSR?

The strobe (G) input must be at a low logic level to enable the selected input. When the strobe is high, the standard output (Y) is forced low and the inverse output (W) is forced high, regardless of the address inputs.

What is the function of the inverse output (W) on this device?

The inverse output (W) provides the complement of the selected data input. While the standard output (Y) reflects the selected data directly, W reflects the logical NOT of that data, allowing for dual-phase signal availability.