DM74LS74ASJ

Overview

The DM74LS74ASJ is a dual positive-edge-triggered D flip-flop manufactured by Fairchild Semiconductor. It features complementary outputs and includes independent preset and clear inputs for direct control of the output states. The device operates within a supply voltage range of 4.75V to 5.25V and supports a clock frequency up to 35MHz. It is housed in a 16-pin DIP package and functions within an operating temperature range of 0°C to 75°C.

Feature Summary

• Dual configuration containing two independent positive-edge-triggered D flip-flops
• Includes asynchronous preset and clear inputs for immediate state control
• Provides both true and complementary outputs for flexible logic interfacing

Applications

• Data storage and register applications in digital systems
• Shift registers for serial-to-parallel data conversion
• Frequency division circuits in timing and counting logic

Procurement Notes

Verify the specific suffix 'ASJ' against official datasheets to confirm pinout, package dimensions, and electrical characteristics. Ensure compatibility with existing board layouts and thermal requirements before procurement.

Selection Notes

Select this component when dual independent storage elements are required in a single package. Consider the 35MHz speed limit and standard TTL drive capabilities relative to system timing constraints and load requirements.

Part Context

This part belongs to the 74LS series of low-power Schottky logic devices. It provides improved switching speed over standard LS logic while maintaining lower power consumption than original Schottky variants, suitable for general-purpose digital logic applications.

Replacement Considerations

Check for cross-manufacturer equivalents such as SN74LS74 or MC74LS74. Verify that substitute parts match the 16-pin DIP package and maintain identical logical functionality and electrical specifications.