74VHC165FT

Shift Registers Overview

The Toshiba 74VHC165FT is an advanced high-speed CMOS 8-bit parallel/serial-in, serial-out shift register fabricated with silicon gate C2MOS technology. It operates within a supply voltage range of 2.0 V to 5.5 V and supports a maximum clock frequency of 150 MHz at 5 V. The device features synchronous parallel loading on the positive clock transition and serial shifting when the SHIFT/LOAD input is high. It includes power-down protection on all inputs and ensures input voltage tolerance up to 5.5 V regardless of supply voltage.

Shift Registers Feature Summary

• High-speed operation comparable to Bipolar Schottky TTL with low power dissipation
• Synchronous parallel data loading capability controlled by SHIFT/LOAD input
• Input protection circuit allowing 0 to 5.5 V tolerance independent of supply voltage
• Power-down protection provided on all inputs to prevent device destruction

Shift Registers Applications

• Interface between 5 V and 3 V systems
• Battery backup systems utilizing dual supply configurations
• Parallel-to-serial data conversion circuits
• Serial-to-parallel data expansion applications

Shift Registers Procurement Notes

Verify AEC-Q100 compliance requirements directly with Toshiba sales representatives as specified in the datasheet notes. Confirm RoHS compatibility status for specific environmental regulations prior to procurement. Ensure design adheres to the recommended operating ranges for supply voltage and temperature to maintain normal device function.

Shift Registers Selection Notes

Select this component for applications requiring high-speed serial shifting with synchronous parallel load functionality. The wide operating voltage range supports interfacing between different logic levels. Consider the TSSOP16B package constraints and thermal derating factors for temperatures above 85 °C when designing the system layout.

Shift Registers Part Context

This device belongs to the 74VHC series of advanced high-speed CMOS logic integrated circuits. It is pin and function compatible with other 74 series variants such as 74AC, 74HC, and 74AHC 165 types. The 74VHC series is designed to offer performance similar to Bipolar Schottky TTL while maintaining the low power advantages of CMOS technology.

Shift Registers Replacement Considerations

The datasheet states pin and function compatibility with 74AC/HC/AHC 165 type devices. Verify electrical characteristics and speed parameters against specific replacement part numbers to ensure adequate performance margins for the target application.