SN74178N

Shift Registers Overview

The SN74178N is a four-bit parallel-access shift register manufactured by Texas Instruments in a 14-pin PDIP package. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of 0 °C to 70 °C. The device features asynchronous parallel load functionality, allowing data to be loaded directly into the flip-flops independent of the clock signal. It provides serial input and output capabilities alongside parallel access for efficient data handling in digital logic circuits.

Shift Registers Feature Summary

• Asynchronous parallel load function enables direct data entry without clock synchronization
• Parallel-access architecture allows simultaneous reading or writing of all four bits
• Compatible with standard TTL logic families for broad integration support

Shift Registers Applications

• Data storage in digital systems requiring temporary bit retention
• Serial-to-parallel and parallel-to-serial data conversion tasks
• Shift operations in embedded control applications

Shift Registers Procurement Notes

Verify the specific suffix 'N' confirms the 14-pin PDIP package and commercial temperature grade (0°C to 70°C). Ensure compatibility with system voltage levels between 2V and 6V. Confirm that asynchronous loading meets timing requirements. Check for RoHS compliance status if required by assembly standards. Validate pinout alignment with existing PCB footprints before procurement.

Shift Registers Selection Notes

Select this component when four-bit shift capability with parallel access is required. It suits applications needing simple data movement without complex interface protocols. Consider the PDIP package for through-hole mounting needs. Evaluate power consumption against system constraints given the low static current characteristics. Ensure the operating temperature range aligns with the environmental conditions of the target application.

Shift Registers Part Context

This part belongs to the Texas Instruments SN74178 series of parallel-access shift registers. It is designed for general-purpose digital logic applications where reliable data shifting and storage are essential. The series offers robust performance within standard logic voltage ranges, making it suitable for various industrial and consumer electronic designs requiring basic sequential logic functions.

Shift Registers Replacement Considerations

Check for equivalent parts from other manufacturers offering identical pinouts and electrical specifications. Verify that any substitute maintains the same asynchronous parallel load feature and four-bit capacity. Ensure voltage and temperature ratings meet or exceed original requirements.