SN74AS374N

Flip Flops Overview

The SN74AS374N is an octal D-type edge-triggered flip-flop manufactured by Texas Instruments, belonging to the AS logic series. It features eight independent D-type flip-flops with three-state outputs in a 20-pin PDIP package. The device operates on a single supply voltage ranging from 4.5 V to 5.5 V and supports through-hole mounting. It exhibits a propagation delay of 11.5 ns at 50 pF load and provides high drive capability with output currents of 15 mA for high levels and 48 mA for low levels. The component is characterized for operation within a temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Octal configuration containing eight independent D-type edge-triggered flip-flops
• Three-state outputs designed for direct bus driving applications
• High current drive capability suitable for capacitive or low-impedance loads
• Buffered control inputs for efficient parallel data loading

Flip Flops Applications

• Implementing buffer registers in digital systems
• Serving as I/O ports for peripheral interfacing
• Functioning as bidirectional bus drivers
• Operating as working registers in memory architectures

Flip Flops Procurement Notes

Verify the specific suffix 'N' corresponds to the standard plastic DIP package variant when sourcing. Confirm that the AS series designation indicates Schottky bipolar technology rather than CMOS alternatives. Ensure compatibility with 5V logic families during integration. Check manufacturer documentation for any recent product lifecycle changes or obsolescence notices before finalizing procurement plans.

Flip Flops Selection Notes

Select this component for designs requiring high-speed switching and strong bus drive capabilities within a 5V environment. The AS series offers faster performance compared to standard 74-series logic but consumes more power. Consider thermal management due to higher static current consumption inherent to bipolar technology. Verify that the PDIP package fits the available PCB footprint constraints.

Flip Flops Part Context

This part belongs to the Texas Instruments 74AS (Advanced Schottky) family, which combines the speed of Schottky diodes with reduced power consumption compared to earlier S-series devices. It is functionally similar to other octal latches but utilizes edge-triggering for precise timing control. The SN74AS374N serves as a foundational building block for synchronous digital circuits requiring parallel data storage and high-drive output stages.

Flip Flops Replacement Considerations

SN74AS374NS (SOIC package equivalent)

Flip Flops FAQ

What is the trigger mechanism for the SN74AS374N?

The device uses positive-edge triggering, meaning the Q outputs update to match the D input levels on the rising transition of the clock signal.

How does the three-state output benefit bus applications?

The three-state outputs allow the device to place its lines in a high-impedance state via the OE pin, preventing bus contention when multiple devices share the same communication lines.