SN74LS194ADR

Shift Registers Overview

The SN74LS194ADR is a 4-bit bidirectional universal shift register from the Texas Instruments 74LS series. It operates on a single bipolar circuit with four bits, utilizing a 16-SOIC surface-mount package. The device supports serial and parallel-to-parallel counting sequences with two input lines and one output line per direction. Electrical specifications include a propagation delay of 26 ns and a supply voltage range of 4.75 V to 5.25 V. It functions within an operating temperature range of 0°C to +70°C.

Shift Registers Feature Summary

• Supports bidirectional shifting capabilities for data movement in both directions.
• Enables synchronous parallel loading of data into the register.
• Features a direct asynchronous clear input for immediate reset operations.

Shift Registers Applications

• Serial to parallel data conversion circuits
• Parallel to serial data conversion systems
• Digital signal processing shift operations

Shift Registers Procurement Notes

Verify the specific suffix 'ADR' indicates the 16-SOIC surface-mount package variant distinct from through-hole options. Confirm RoHS compliance status and moisture sensitivity level prior to ordering. Ensure the supplier provides official datasheets matching the Texas Instruments SN74LS194A specification sheet for accurate pinout and electrical parameter validation.

Shift Registers Selection Notes

Select this component when a low-power Schottky logic family shift register is required in a compact surface-mount form factor. The 74LS series offers faster switching speeds compared to standard TTL while maintaining lower power consumption. Verify that the 16-SOIC footprint aligns with the PCB layout constraints and that the 4.75V to 5.25V supply range matches the system power design.

Shift Registers Part Context

This part belongs to the SN74LS194A family of 4-bit bidirectional universal shift registers manufactured by Texas Instruments. The 'ADR' suffix specifically denotes the active matrix roll tape packaging in a 16-SOIC (0.154 inch width) housing. It is part of the broader 74LS logic product line designed for general-purpose digital logic applications requiring reliable shift register functionality.

Shift Registers Replacement Considerations

SN74LS194AD is listed as a direct substitute for the SN74LS194ADRE4 variant, indicating potential interchangeability within the same manufacturer's logic family. Verify package compatibility and ensure the replacement maintains the same SOIC footprint and electrical characteristics before implementation.