MC74HC165AMNTWG

Shift Registers Overview

The MC74HC165AMNTWG is an 8-bit serial or parallel-input/serial-output shift register manufactured by onsemi. It utilizes high-performance silicon-gate CMOS technology and operates within a supply voltage range of 2.0 V to 6.0 V. The device features asynchronous parallel loading capability when the Serial Shift/Parallel Load input is low, and serial shifting on the rising edge of the Clock or Clock Inhibit inputs when high. It includes complementary outputs (QH and QH) from the final stage and supports clock frequencies up to 35 MHz at 6.0 V. The component is housed in a QFN-16 package.

Shift Registers Feature Summary

• Supports both asynchronous parallel data loading and serial shifting operations via dedicated control inputs.
• Features dual clock inputs that function as active-high clocks or clock inhibit signals for flexible timing control.
• Provides complementary non-inverted and inverted outputs from the eighth stage of the shift register.
• Compatible with standard CMOS outputs and LSTTL outputs when pullup resistors are utilized.

Shift Registers Applications

• Data acquisition systems requiring parallel-to-serial conversion
• Keypad scanning interfaces for microcontroller input expansion
• Status monitoring circuits for industrial control panels

Shift Registers Procurement Notes

Verify the specific ordering suffix 'MN2TWG' against the manufacturer's current datasheet to confirm the QFN-16 package type and tape-and-reel shipping configuration. Ensure the application environment remains within the specified -55°C to +125°C operating temperature range and that supply voltage does not exceed 6.0 V to maintain reliability standards defined by JEDEC Standard No. 7A.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with synchronous serial output and asynchronous parallel load is required. The HC logic family offers high noise immunity and low input current suitable for general-purpose digital interfacing. Consider the QFN-16 surface-mount package for compact PCB layouts where space constraints exist compared to traditional SOIC or TSSOP footprints.

Shift Registers Part Context

This part belongs to the MC74HC165A series of 8-bit shift registers produced by onsemi. It shares pinout compatibility with the LS165 device family, facilitating drop-in replacements in legacy designs. The product line emphasizes high-performance silicon-gate CMOS technology, ensuring robust operation across wide voltage and temperature ranges for commercial applications.

Shift Registers Replacement Considerations

MC74HC165ADTR2G-Q

Shift Registers FAQ

How is data loaded into the register?

Data can be loaded asynchronously in parallel when the Serial Shift/Parallel Load input is low, or shifted serially on the rising edge of the Clock or Clock Inhibit when the input is high.

What is the function of the two clock inputs?

The Clock and Clock Inhibit inputs function identically; either can serve as an active-high clock source, or one can be designated as a clock inhibit to prevent double clocking.