M74HC4094B1R

Shift Registers Overview

The M74HC4094B1R is an 8-bit serial-in parallel-out (SIPO) shift latch register fabricated using silicon gate C2MOS technology. It integrates an 8-bit shift register and an 8-bit latch with a 3-state output buffer. Data shifts serially on the positive clock transition, while latching occurs on the negative strobe transition. The device operates within a wide voltage range of 2 V to 6 V, supports a maximum frequency of 80 MHz at 6 V, and features low power dissipation of 4 μA max. It includes ESD protection circuits and maintains balanced propagation delays.

Shift Registers Feature Summary

• Integrates an 8-bit shift register and an 8-bit latch with 3-state output buffers
• Provides high-speed operation with typical frequencies up to 80 MHz
• Features symmetrical output impedance for balanced signal integrity
• Includes protection circuits against static discharge and transient excess voltage

Shift Registers Applications

• Serial-to-parallel data conversion in digital systems
• Cascading multiple devices for expanded I/O capabilities
• Display driver interfaces requiring latched outputs
• General-purpose logic applications compatible with 74 series standards

Shift Registers Procurement Notes

Verify the specific suffix B1R corresponds to the required tape-and-reel packaging configuration. Confirm that the HC logic family meets the noise immunity and voltage requirements for the target application environment. Ensure compatibility with existing PCB footprints and assembly processes for surface-mount installation.

Shift Registers Selection Notes

Select this component when a combination of shifting and latching functionality is required in a single package. The 3-state outputs allow for direct connection to bus structures without external tri-state buffers. Consider the operating temperature range and supply voltage constraints to ensure reliable performance across the intended operational conditions.

Shift Registers Part Context

This part belongs to the M74HC4094 family of high-speed CMOS logic devices. It is functionally pin-compatible with the standard 74HC4094 series, facilitating drop-in replacements in designs originally based on generic 74-series specifications. The device represents STMicroelectronics' implementation of this widely used logic architecture.

Shift Registers Replacement Considerations

Direct substitutes include other manufacturers' 74HC4094 variants. Verify pinout compatibility and electrical characteristics such as propagation delay and output drive current before substitution.