SN74LS377NG4

Flip Flops Overview

The SN74LS377NG4 is an octal D-type flip-flop with clock enable, belonging to the Texas Instruments 74LS series. It features eight independent D-type flip-flops with positive-edge triggering and non-inverting outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a maximum propagation delay of 27 ns at 5 V with 15 pF load, a high-level output current of -400 µA, and a low-level output current of 8 mA. It supports through-hole mounting in a 20-PDIP package and functions within an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Contains eight independent D-type flip-flops with positive-edge triggering for data storage.
• Includes a dedicated clock enable input to control data transfer timing.
• Provides non-inverting outputs compatible with standard TTL logic levels.

Flip Flops Applications

• Octal register designs requiring parallel data storage
• Shift register configurations for serial-to-parallel conversion
• Digital counting circuits utilizing edge-triggered state retention

Flip Flops Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current product status documentation, as legacy designations may indicate discontinued or phased-out components. Confirm RoHS compliance details directly from the official datasheet, as environmental declarations can vary by production batch and region. Ensure that the 20-PDIP package dimensions match the target PCB footprint requirements before finalizing procurement decisions.

Flip Flops Selection Notes

Select this component when designing systems requiring octal data latching with precise clock enable control using LS-TTL logic families. It is suitable for applications needing non-inverting outputs and standard 5 V operation. Consider alternative packages like NSR for surface-mount needs if space constraints exist, while maintaining compatibility with existing 74LS circuit architectures.

Flip Flops Part Context

This part belongs to the widely adopted 74LS (Low-power Schottky) logic family, known for balanced speed and power consumption. The SN74LS377 serves as a fundamental building block for sequential logic circuits. Its octal configuration allows efficient handling of 8-bit data words, making it a staple in older digital system designs and industrial control interfaces requiring reliable edge-triggered memory elements.

Flip Flops Replacement Considerations

SN74LS377N is a direct functional equivalent without the G4 suffix. SN74HC377 offers CMOS performance but requires voltage level verification. SN74LS374 provides similar functionality but includes tri-state outputs instead of standard non-inverting outputs.