N74F166N,602

Shift Registers Overview

The N74F166N,602 is an 8-bit bidirectional universal shift register manufactured by NXP USA Inc. It operates within a supply voltage range of 4.5V to 5.5V and supports a maximum clock frequency of 175MHz at typical conditions. The device features high impedance NPN base inputs with low current consumption in both states. It includes synchronous parallel-to-serial data entry via an active-low parallel enable input, asynchronous master reset functionality, and expandability to 16 bits in 8-bit increments using the serial output connection.

Shift Registers Feature Summary

• Supports synchronous parallel loading and serial shifting operations controlled by dedicated inputs
• Features an asynchronous master reset that overrides all other inputs to clear the register
• Includes a clock enable function allowing for a hold or 'do nothing' mode during operation

Shift Registers Applications

• Synchronous parallel-to-serial data conversion circuits
• Serial-to-parallel data expansion systems
• General-purpose digital shift register applications requiring high-speed operation

Shift Registers Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required package type and temperature range. Check for product change notifications regarding manufacturing updates. Ensure compliance with RoHS directives if applicable to the target assembly process.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with high-speed performance is required. Consider the 16-DIP package for through-hole mounting requirements. Evaluate the need for synchronous parallel loading capabilities versus simple serial shifting. Verify that the operating temperature range meets the environmental specifications of the intended application environment.

Shift Registers Part Context

This part belongs to the 74F series of logic integrated circuits, known for fast switching speeds compared to standard TTL logic. The 74F166 specifically provides an 8-bit configuration suitable for various digital signal processing tasks. It is designed for commercial temperature ranges and utilizes a plastic dual in-line package format common in legacy and industrial electronic designs.

Shift Registers Replacement Considerations

Direct substitutes include the I74F166N variant which supports an extended industrial temperature range from -40°C to +85°C. Other compatible parts within the same family may offer similar electrical characteristics but require verification of pin compatibility and functional equivalence before integration into existing designs.

Shift Registers FAQ

How does the clock enable input affect the shift register operation?

When the clock enable input is held high, the register enters a hold mode where it retains its current state regardless of clock transitions, effectively disabling the shifting process.

What is the function of the parallel enable input?

The parallel enable input controls whether the device loads data from the parallel inputs or shifts data from the serial input. When active low, it allows parallel data to be loaded synchronously with the clock edge.