74FR244SJ

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74FR244SJ is a non-inverting octal buffer and line driver featuring three-state outputs, designed for memory address drivers, clock drivers, and bus-oriented transmitter/receiver applications. It operates within a supply voltage range of +4.5V to +5.5V and supports an ambient temperature range of 0°C to +70°C. The device provides high drive capability with outputs capable of sinking 64mA and sourcing 15mA. Propagation delays are guaranteed at a maximum of 3.9ns under standard conditions (CL=50pF) and up to 7.3ns under extended load conditions (CL=250pF). Pin-to-pin skew is strictly controlled, with limits of 1.6ns for HIGH-to-LOW transitions and 1.0ns for LOW-to-HIGH transitions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features three-state outputs suitable for driving bus lines or buffering memory address registers
• Provides high current drive capability with specified sink and source currents
• Guarantees pin-to-pin skew to ensure synchronized signal transmission across all channels

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitter/receiver circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant, as the SJ suffix denotes a 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide. Confirm that the component meets the required operating temperature range of 0°C to +70°C for your application environment. Ensure compatibility with the +4.5V to +5.5V supply voltage specifications. Check for any end-of-life status or obsolescence notices from the manufacturer before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring an octal buffer with precise timing synchronization due to its guaranteed pin-to-pin skew. It is appropriate for applications needing robust drive strength for bus lines or memory interfaces. Consider the 20-SOP package constraints regarding board space and thermal management. Verify that the input logic levels align with the system's voltage standards, specifically the VIH and VIL thresholds defined in the datasheet.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74FR244SJ belongs to the 74FR series of logic devices, which are characterized by fast propagation delays and high drive capabilities. This series is part of onsemi's (formerly Fairchild Semiconductor) standard logic portfolio, designed for general-purpose digital applications. The device utilizes bipolar technology to achieve its performance metrics, distinguishing it from CMOS counterparts in terms of power consumption and drive strength characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible alternatives include the SN74AS244ANSR and SN74BCT244NSR from Texas Instruments. Other parameter-equivalent options listed are the SN74F241NSR and SN74F244NSR. When substituting, verify that the replacement device matches the SOP-20 package dimensions and electrical characteristics, particularly the output drive current and propagation delay specifications.