SN74HCT244NSRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT244NSRG4 is an octal buffer and line driver manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features two independent 4-bit buffers with separate output enable (OE) inputs. It provides non-inverting data transfer from A inputs to Y outputs when OE is low, entering a high-impedance state when OE is high. Key electrical parameters include a maximum static current of 8 µA, ±6 mA output drive capability at 5 V, and a typical propagation delay of 13 ns. It supports surface-mount installation in a 20-SO package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configured as two independent 4-bit buffers with separate output enable controls for flexible bus management
• Provides three-state outputs that isolate the bus when disabled to prevent signal contention
• Compatible with TTL voltage levels while utilizing CMOS technology for low power consumption

Buffers, Drivers, Receivers, Transceivers Applications

• Driving memory address registers in computer systems
• Clock distribution networks requiring high fan-out
• Bus-oriented receivers and transmitters in communication interfaces

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status according to the manufacturer's datasheet. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range meets system requirements. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between different logic families due to its TTL-compatible inputs. It is suitable for applications requiring moderate speed and high noise immunity. Consider the package size constraints and thermal dissipation needs. Verify that the output drive strength is sufficient for the connected load capacitance and trace length.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HCT244 family of octal buffers and line drivers. It is designed to improve performance and density in digital systems. The HCT technology ensures compatibility with standard TTL logic levels. The device is widely used in general-purpose digital circuits where bus driving and signal buffering are required.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include SN74HCT244DWR and SN74HCT244DBR. Verify pin compatibility and electrical specifications before substitution. Other manufacturers may offer equivalent parts such as MC74HCT244ADWR2G. Ensure the replacement maintains the same package dimensions and thermal performance.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the OE input?

The OE (Output Enable) input controls the state of the outputs. When OE is low, the device passes data from inputs to outputs. When OE is high, the outputs enter a high-impedance state.

Is the SN74HCT244NSRG4 compatible with 3.3V logic?

No, the device requires a supply voltage between 4.5 V and 5.5 V. It is not directly compatible with 3.3V logic without level shifting.