DM74ALS5245SJ

Overview

The DM74ALS5245SJ is an octal bus transceiver designed for asynchronous two-way communication between data buses. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a free-air operating temperature range of 0 °C to +70 °C. The device features a propagation delay time of 3 ns to 10 ns from input A or B to output B or A. It provides a low-level output current of 24 mA and a high-level output current of -15 mA. The component utilizes hysteresis inputs with a typical value of 0.32 V to improve noise rejection.

Feature Summary

• Provides asynchronous two-way communication between data buses via direction control (DIR) and enable (G) inputs.
• Incorporates input hysteresis to deliver improved noise rejection and high input noise immunity.
• Utilizes an advanced oxide-isolated, ion-implanted Schottky TTL process with PNP inputs to reduce input loading.
• Switching specifications are guaranteed over the full temperature and supply voltage range.

Applications

• Asynchronous communication between data buses
• High-performance memory decoding applications
• Data routing systems

Procurement Notes

Verify that the ordering code matches the specific package requirements, as the SJ suffix denotes a 20-Lead Small Outline Package (SOP). Confirm the manufacturer details, noting historical production by Fairchild Semiconductor Corporation which may now be under onsemi. Ensure the application environment remains within the specified 0 °C to +70 °C operating temperature range and 4.5 V to 5.5 V supply voltage limits.

Selection Notes

Select this component when an octal transceiver with Schottky TTL speed and hysteresis is required. It is suitable for designs needing isolation via the enable input and direction control. Consider the SOP package dimensions if surface mount assembly is necessary. Verify compatibility with existing logic levels, as it interfaces directly with TTL inputs.

Part Context

This device belongs to the 74ALS series of logic integrated circuits, characterized by Advanced Low-power Schottky technology. The DM74ALS5245 variant specifically functions as an octal bus transceiver. It shares functional similarities with other 74-series transceivers but offers distinct switching characteristics and noise immunity profiles defined by its ALS family classification.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.