M74HC164TTR

Shift Registers Overview

The M74HC164TTR is an 8-bit serial-in, parallel-out (SIPO) shift register from STMicroelectronics, fabricated using silicon gate C2MOS technology. It operates within a supply voltage range of 2V to 6V and supports a maximum clock frequency of 62MHz at 6V. The device features asynchronous master reset functionality, symmetrical output impedance with minimum drive currents of 4mA, and high noise immunity defined by input thresholds of 28% VCC. It includes protection circuits against static discharge and transient excess voltage on all inputs.

Shift Registers Feature Summary

• High-speed CMOS architecture enabling operation up to 62MHz typical clock frequency
• Asynchronous clear input that overrides other signals to force outputs low
• Dual data inputs (A and B) allowing flexible serial entry and enable control
• Robust ESD protection and high noise immunity for stable signal reception

Shift Registers Applications

• Serial-to-parallel data conversion in digital systems
• Expansion of I/O ports for microcontroller interfaces
• Control logic for driving multiple peripheral devices sequentially
• Data buffering in industrial automation and communication equipment

Shift Registers Procurement Notes

Verify the specific package type matches the design requirements, as the M74HC164 series is available in DIP, SOP, and TSSOP configurations. Confirm the ordering suffix corresponds to the desired tape and reel quantity or tube packaging. Ensure the operating temperature range meets the environmental conditions of the final application. Cross-reference the datasheet revision date to confirm current specifications.

Shift Registers Selection Notes

Select this component when an 8-bit SIPO shift register is required with HC logic compatibility. Consider the wide operating voltage range suitable for interfacing between different logic families. Evaluate the propagation delay characteristics against the system timing constraints. Verify that the synchronous data entry and asynchronous reset functions align with the control logic architecture.

Shift Registers Part Context

This part belongs to the M74HC164 family of 8-bit shift registers manufactured by STMicroelectronics. It is functionally compatible with the standard 74HC164 series. The TTR suffix indicates the TSSOP-14 package variant supplied in a tape and reel format for automated surface-mount assembly processes.

Shift Registers Replacement Considerations

Compatible substitutes include the M74HC164B1R (DIP), M74HC164M1R (SOP), and M74HC164RM13TR (SOP). Other manufacturers producing pin-compatible 8-bit SIPO shift registers may also serve as alternatives if electrical parameters are verified.