MC74HC165ADTR2G

Shift Registers Overview

The MC74HC165ADTR2G is an 8-bit parallel-in serial-out shift register manufactured by onsemi in the HC logic family. It operates within a DC supply voltage range of 2.0 V to 6.0 V and supports an operating temperature from -55°C to +125°C. The device features asynchronous parallel loading via the Serial Shift/Parallel Load control input and serial shifting through dedicated Clock or Clock Inhibit inputs. It provides complementary non-inverted (QH) and inverted (QH) outputs, ensuring compatibility with standard CMOS, NMOS, and LSTTL loads.

Shift Registers Feature Summary

• Supports both asynchronous parallel data loading and synchronous serial shifting operations
• Provides dual clock inputs allowing independent clocking or clock inhibition functionality
• Delivers complementary QH and QH outputs for flexible interface requirements
• Compatible with standard CMOS outputs and LSTTL outputs when pullup resistors are applied

Shift Registers Applications

• Data acquisition systems requiring parallel-to-serial conversion
• Keyboard scanning matrices for microcontroller interfaces
• Expansion of digital I/O ports in embedded systems
• Status monitoring circuits for industrial control applications

Shift Registers Procurement Notes

Verify the specific ordering suffix 'R2G' corresponds to the TSSOP-16 package configuration as documented in the official datasheet. Confirm that the component meets RoHS compliance standards and is lead-free. Ensure the procurement source provides valid traceability documentation for the semiconductor manufacturer. Cross-reference the marking diagram to validate the assembly location and production week codes printed on the device surface.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with high-speed CMOS performance is required. The HC series offers wide voltage operation suitable for diverse logic families. Consider the TSSOP-16 package for space-constrained surface-mount designs. Evaluate the maximum clock frequency specifications against the system timing requirements to ensure reliable data shifting without propagation delay violations.

Shift Registers Part Context

This part belongs to the MC74HC165A family of high-performance silicon-gate CMOS devices. It shares pinout compatibility with legacy LS165 components, facilitating direct upgrades in existing designs. The device integrates 286 FETs and complies with JEDEC Standard No. 7A for noise immunity. It represents a standard solution for serial data handling within general-purpose logic integrated circuits.

Shift Registers Replacement Considerations

MC74HC165ADR2G