SN74ACT564NSR

Flip Flops Overview

The SN74ACT564NSR is an octal D-type edge-triggered flip-flop manufactured by Texas Instruments, belonging to the ACT logic series. It features eight independent circuits with three-state outputs and inverting polarity. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in an SOIC-20 package. Key electrical parameters include a propagation delay of 10.5 ns, high-level output current of -24 mA, and low-level output current of 24 mA. It functions reliably across an operating temperature range of -40°C to +85°C.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type edge-triggered flip-flops for parallel data storage.
• Three-state outputs enable direct connection to microprocessor buses without additional buffering.
• Inverting polarity design allows flexible signal routing in digital logic architectures.

Flip Flops Applications

• Parallel-to-serial data conversion interfaces
• Register stages in bus-oriented memory systems
• High-speed digital signal processing pipelines

Flip Flops Procurement Notes

Verify that the ordering suffix 'NSR' corresponds to the specific SOIC-20 surface-mount package variant. Confirm compatibility with standard 3.3V or 5V logic levels as defined by the ACT series specifications. Ensure thermal management meets the -40°C to +85°C operational requirements for the intended application environment.

Flip Flops Selection Notes

Select this component when an octal register with three-state capability is required for bus interfacing. The ACT series offers a balance of speed and power consumption suitable for general-purpose digital applications. Consider the inverting output polarity when designing signal paths to ensure correct logical inversion relative to input data.

Flip Flops Part Context

This part belongs to the Texas Instruments SN74ACT family, which combines advanced CMOS technology with TTL-compatible inputs. The SN74ACT564 specifically addresses the need for high-density octal registers in systems requiring bus isolation. It serves as a standard solution for temporary data storage in microprocessor-based designs.

Flip Flops Replacement Considerations

Public confirmed substitutes include SN74ACT564DWR and SN74ACT564DWRE4. Verify pinout and electrical characteristics match before substitution.

Flip Flops FAQ

What is the output polarity of the SN74ACT564NSR?

The device features inverting polarity, meaning the Q outputs are logically inverted relative to the D inputs.

Does the SN74ACT564NSR support direct bus interfacing?

Yes, the three-state outputs allow direct connection to system buses without requiring external buffer drivers.