SN74LS74ANSR

Flip Flops Overview

The SN74LS74ANSR is a dual D-type flip-flop from the Texas Instruments 74LS series, housed in a 14-SOIC surface-mount package. It features two independent positive-edge-triggered circuits with TTL-compatible inputs and outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a propagation delay of 40 ns at 5 V with 15 pF load. It provides complementary Q and Q-bar outputs, low-level active preset and clear functions, and operates across a temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Dual independent D-type flip-flops with positive-edge triggering
• Active-low asynchronous preset and clear inputs
• TTL-compatible input and output logic levels
• Complementary Q and Q-bar data outputs

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register construction
• Frequency division and counting applications
• Digital signal synchronization and timing control

Flip Flops Procurement Notes

Verify the specific suffix 'ANSR' corresponds to the SOIC-14 surface-mount package and reel/cut-tape packaging format. Confirm that the LS logic family specifications align with system requirements, particularly regarding the 4.75 V to 5.25 V supply voltage tolerance and 40 ns propagation delay characteristics for timing-critical designs.

Flip Flops Selection Notes

Select this component when a dual D-type flip-flop with standard LS speed and TTL compatibility is required in a surface-mount form factor. Ensure the application environment stays within the 0°C to +70°C operating temperature range. Consider the 8 mA low-level output drive capability for fan-out requirements and verify that the 40 ns propagation delay meets the system's maximum clock frequency constraints.

Flip Flops Part Context

This part belongs to the Texas Instruments 74LS (Low-power Schottky) logic family, known for balanced speed and power consumption. The SN74LS74A variant specifically denotes the improved version of the dual D-flip-flop. The 'SR' suffix indicates the SOIC-14 surface-mount package configuration, distinguishing it from through-hole PDIP alternatives like the SN74LS74AN.

Flip Flops Replacement Considerations

Publicly confirmed substitute part numbers include SN74LS74ADRE4 and SN74LS74ADRG4, which share identical logical functionality and pinout configurations within the same logic family.