SN74HCT244DBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT244DBR is an octal buffer and line driver manufactured by Texas Instruments, utilizing HCT CMOS technology. It features eight non-inverting channels with three-state outputs housed in a 20-pin SSOP package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a maximum static current of 8 µA and output drive capabilities of ±6 mA at 5 V. Propagation delay is specified as 45 ns at 4.5 V and 40 ns at 5.5 V. The component supports surface-mount installation and functions across a temperature range of -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configured as two independent four-bit buffers or drivers with separate output enable inputs for flexible bus management.
• Provides high noise immunity and low power consumption suitable for battery-operated applications.
• Outputs are designed to drive bus lines and buffer memory address registers directly.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant against design requirements, as the SN74HCT244 series includes SOIC, TSSOP, and other options. Confirm that the SSOP-20 footprint matches the PCB layout. Ensure the operating environment stays within the specified -40°C to +85°C range. Check for RoHS compliance status if required by project specifications. Validate input compatibility with TTL voltage levels in the target system.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between different logic families requiring HCT speed and CMOS density. It is appropriate for systems needing multiple buffered outputs with tri-state control. Consider the propagation delay characteristics for timing-critical paths. Evaluate the physical dimensions of the SSOP-20 package against available board space constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HCT244 family of octal buffers. It is designed to improve performance and density in digital circuits. The HCT technology ensures compatibility with standard TTL inputs while offering CMOS advantages. The device is widely used in general-purpose digital logic applications requiring signal buffering and driving capabilities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HCT244DWR (SOIC-20) offers similar functionality in a different package. SN74HCT244DGSR provides the same logic in a VSSOP-20 package. Verify pinout compatibility and thermal characteristics when substituting.