SN74AHCT595DBR

Shift Registers Overview

The SN74AHCT595DBR is an 8-bit serial-in, parallel-out shift register with 3-state output registers manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and supports a maximum frequency of 135MHz at 15pF load capacitance. The device features TTL-voltage compatible inputs, direct clear functionality, and positive-edge triggered clocks for both shift and storage registers. It is housed in a 16-SSOP package and functions across an operating temperature range of -40°C to 125°C.

Shift Registers Feature Summary

• TTL-voltage compatible inputs
• Direct overriding clear input
• Positive-edge triggered separate clocks

Shift Registers Applications

• Network switches
• Power infrastructures
• LED displays

Shift Registers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum to confirm active production status and material specifications. Ensure compatibility with RoHS requirements and lead finish options such as NIPDAU. Confirm moisture sensitivity level ratings and peak reflow temperatures align with assembly processes before procurement.

Shift Registers Selection Notes

Select this component for applications requiring bus interface capabilities where output ringing must be minimized due to low drive characteristics. Verify that the 3-state outputs meet system isolation needs and that the TTL-compatible input levels suit the source logic family. Consider thermal resistance values when designing for high ambient temperatures or dense PCB layouts.

Shift Registers Part Context

This part belongs to the SNx4AHCT595 series of 8-bit shift registers. It shares functional similarities with other variants like the SN74AHCT595DR (SOIC) and SN74AHCT595PWRG3 (TSSOP), differing primarily in package type and pin configuration dimensions while maintaining identical electrical performance and logical operations.

Shift Registers Replacement Considerations

SN74AHCT595DR

Shift Registers FAQ

How does the device handle unused inputs?

Unused inputs should never float; they must be connected to a high or low bias, typically GND or VCC, to prevent undefined operational states.

What is the function of the SRCLR pin?

The SRCLR pin provides a direct overriding clear function for the shift register, resetting its state independently of the clock signals.