CD74HC194MT

Shift Registers Overview

The CD74HC194MT is a high-speed CMOS logic device manufactured by Texas Instruments, functioning as a 4-bit bidirectional universal shift register. It operates within a supply voltage range of 2V to 6V and supports serial/parallel to parallel counting sequences. The component features six input lines and four output lines, housed in a 16-SOIC surface-mount package. It exhibits propagation delays of 15ns, 21ns, and 48ns depending on conditions, with an operating temperature range from -55°C to +125°C.

Shift Registers Feature Summary

• Supports bidirectional data shifting capabilities for versatile digital signal processing applications.
• Enables simultaneous parallel loading of data alongside serial shifting operations.
• Provides synchronous control via dedicated mode selection inputs for flexible configuration.

Shift Registers Applications

• Data storage and buffering in digital communication systems
• Parallel-to-serial and serial-to-parallel conversion circuits
• Arithmetic logic unit (ALU) data path components

Shift Registers Procurement Notes

Verify the specific suffix 'MT' against the manufacturer's official datasheet to confirm the exact package variant and tape-and-reel specifications. Ensure compatibility with the target PCB footprint and reflow soldering profile requirements. Cross-reference the RoHS compliance status and lead-free markings with current production notices to meet regulatory standards for the intended deployment region.

Shift Registers Selection Notes

Select this component when a bidirectional shift register with parallel load capability is required in a high-speed CMOS environment. The wide operating voltage range allows integration into systems utilizing 2V, 3.3V, or 5V logic levels. The extended temperature range makes it suitable for industrial applications requiring reliability under extreme thermal conditions compared to standard commercial grade parts.

Shift Registers Part Context

This part belongs to the Texas Instruments CD74HC series, which utilizes high-speed CMOS technology compatible with TTL logic levels. The 74HC194 family provides universal shift register functionality, distinguishing itself from simple counters by offering both left and right shifting modes. It serves as a fundamental building block for sequential logic design in microcontroller interfacing and memory expansion architectures.

Shift Registers Replacement Considerations

Compatible substitutes include the CD74HC194M and CD74HCT194M. Verify pinout compatibility and logic level thresholds, particularly when replacing HC variants with HCT versions to ensure proper voltage matching.