MC74AC194D

Shift Registers Overview

The MC74AC194D is a 4-bit universal bidirectional shift register from the onsemi AC logic family. It operates within a supply voltage range of 2 V to 6 V and supports TTL-compatible inputs. The device features parallel load capability, serial data input for both directions, and independent clock control for shifting or loading operations. It is housed in a 16-pin SOIC package and functions reliably across an industrial temperature range of -40°C to +85°C.

Shift Registers Feature Summary

• Supports bidirectional serial shifting with independent clock control
• Enables synchronous parallel data loading into all four bits
• Provides clear functionality to reset outputs to low state
• Compatible with standard CMOS and TTL logic families

Shift Registers Applications

• Data storage and transfer in digital systems
• Serial-to-parallel and parallel-to-serial conversion
• Implementation of arithmetic logic units
• Pulse generation and timing circuits

Shift Registers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and tape/reel specifications. Ensure environmental compliance requirements match project needs by checking RoHS status. Confirm availability through authorized distributors as stock levels fluctuate. Validate that the operating voltage and temperature ranges align with system constraints before finalizing procurement.

Shift Registers Selection Notes

Select this component when a compact 4-bit shift register with bidirectional capabilities is required. The AC series offers faster switching speeds compared to older HC variants while maintaining similar pinouts. Consider the 16-pin SOIC package for surface mount assembly. Verify that the 2V to 6V supply range suits the target system power rails. Check if parallel load functionality is necessary for the specific application design.

Shift Registers Part Context

This part belongs to the MC74ACxx series of advanced CMOS logic devices manufactured by onsemi. The AC series provides higher speed performance than standard HC logic while using comparable power. Shift registers in this family are widely used for temporary data storage and manipulation in microprocessor interfaces and communication protocols.

Shift Registers Replacement Considerations

MC74ACT194D: Active CMOS version with TTL-compatible inputs and similar electrical characteristics.