MC74HC595ADTR2G

Shift Registers Overview

The MC74HC595ADTR2G is an 8-bit serial-input/serial or parallel-output shift register with latched 3-state outputs manufactured by onsemi. It integrates an 8-bit shift register and an 8-bit D-type latch, featuring independent clock inputs for both sections. The device includes an asynchronous reset for the shift register and operates within a DC supply voltage range of 2.0 to 6.0 V. It utilizes high-performance silicon-gate CMOS technology.

Shift Registers Feature Summary

• Provides serial-to-parallel data conversion with independent shift and latch clocks
• Features active-low asynchronous reset for the shift register section only
• Outputs are noninverted, 3-state, and directly interface to CMOS, NMOS, and TTL loads
• Inputs are compatible with standard CMOS outputs and TTL outputs when pullup resistors are used

Shift Registers Applications

• Directly interfaces with SPI serial data ports on CMOS microprocessors and microcontrollers
• Expands I/O capabilities in digital logic circuits requiring serial input and parallel output
• Used in systems requiring low input current and high noise immunity characteristics

Shift Registers Procurement Notes

Verify that the ordering suffix matches the required package type, as the base part number covers multiple configurations. Confirm the specific revision level of the datasheet corresponds to the manufacturing date code. Ensure compliance with RoHS and halogen-free requirements if specified for the application environment. Check for any site-specific control changes associated with the manufacturing location.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with latched outputs and 3-state capability is required. The HC series offers a wide operating voltage range suitable for various logic families. Consider the TSSOP-16 package dimensions for PCB layout constraints. Verify that the maximum clock frequency and propagation delays meet the system timing requirements at the intended supply voltage.

Shift Registers Part Context

This part belongs to the MC74HC595A family of high-performance silicon-gate CMOS devices. It is functionally similar to other 8-bit shift registers but distinguishes itself with integrated latching and 3-state outputs. The ADTR2G suffix indicates a tape and reel packaging format in a TSSOP-16 case, designed for automated surface-mount assembly processes.

Shift Registers Replacement Considerations

MC74HC595ADR2G (SOIC-16 package)

Shift Registers FAQ

Does the Output Enable pin affect the serial output?

No, the Output Enable pin forces the parallel outputs (QA-QH) into a high-impedance state but does not affect the serial data output (SQH).

What is the function of the Reset pin?

The Reset pin is an active-low, asynchronous input that resets only the shift register portion of the device. The 8-bit latch is not affected by this signal.