MC74HC595AFELG

Shift Registers Overview

The MC74HC595AFELG is an 8-bit serial-input/serial or parallel-output shift register with latched 3-state outputs, fabricated using high-performance silicon-gate CMOS technology. It consists of an 8-bit shift register and an 8-bit D-type latch with independent clock inputs. The device operates within a DC supply voltage range of 2.0 to 6.0 V and supports an operating temperature range from -55°C to +125°C. It features asynchronous reset for the shift register and direct interface capability with SPI serial data ports on CMOS MPUs and MCUs.

Shift Registers Feature Summary

• Provides serial-to-parallel conversion with an 8-bit shift register feeding an 8-bit storage latch.
• Features three-state parallel outputs that can be directly connected to an 8-bit bus.
• Includes asynchronous reset input for the shift register while leaving the latch unaffected.
• Offers high noise immunity and low quiescent power dissipation characteristic of CMOS devices.

Shift Registers Applications

• Serial-to-parallel data conversion in digital systems
• Direct interfacing with SPI serial data ports on CMOS microprocessors and microcontrollers
• Data receiver circuits requiring latched output stability during shift operations

Shift Registers Procurement Notes

Verify the specific ordering suffix 'FELG' corresponds to the SOEIAJ-16 package configuration as listed in the official ordering information table. Confirm RoHS compliance and lead-free status requirements match project specifications. Ensure the procurement channel sources components directly from authorized distributors to guarantee authenticity and traceability of the semiconductor manufacturing lot.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with latched outputs and three-state capability is required for SPI interfacing. Consider the HC595A series for improved propagation delays and lower power consumption compared to standard HC595 devices. Verify that the SOEIAJ-16 package format aligns with the printed circuit board layout constraints and thermal management requirements of the target application design.

Shift Registers Part Context

This part belongs to the MC74HC595A family of high-performance silicon-gate CMOS logic devices manufactured by onsemi. The family includes variants with different packaging options such as PDIP-16, SOIC-16, TSSOP-16, and SOEIAJ-16. These devices are designed to provide robust performance in digital logic applications requiring serial data shifting and parallel output latching with minimal power consumption.

Shift Registers Replacement Considerations

MC74HC595ADG (SOIC-16), MC74HC595ADTR2G (TSSOP-16), MC74HC595ANG (PDIP-16).

Shift Registers FAQ

Does the asynchronous reset affect the latch register?

No, the asynchronous reset input only resets the shift register portion of the device; the 8-bit latch is not affected by the reset signal.

Can the parallel outputs be held stable during shift operations?

Yes, since the shift clock and latch clock signals are independent, parallel outputs can be held stable during the shift operation.