SN74HCT244N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT244N is an octal buffer and line driver manufactured by Texas Instruments, utilizing HCT CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features eight non-inverting inputs and outputs with three-state capability. It is housed in a 20-pin PDIP package designed for through-hole mounting. Key electrical parameters include a maximum static current of 8 µA and output drive currents of ±6 mA at 5 V. The propagation delay is specified as 45 ns at 4.5 V. The component supports an operating temperature range from -40 °C to +85 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configured as two independent four-bit buffers or drivers with separate output enable controls
• Provides three-state outputs to facilitate direct connection to bus lines
• Compatible with TTL input voltage levels while maintaining low power consumption

Buffers, Drivers, Receivers, Transceivers Applications

• Driving memory address registers
• Clock signal distribution
• Bus-oriented receiver and transmitter circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'NE4' against the base part number 'SN74HCT244N'. Confirm that the procurement matches the required PDIP-20 through-hole package type. Ensure the logic family corresponds to HCT specifications for voltage compatibility. Check RoHS compliance status if environmental regulations apply to the assembly process.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-density octal buffering with three-state isolation. It is suitable for applications needing TTL-compatible inputs driven by CMOS logic. Consider the 20-pin DIP form factor for prototyping or legacy board designs requiring through-hole integration. Evaluate the 4.5 V to 5.5 V operating window against system power rails.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74HCT244 series of octal buffers and line drivers. The series includes variants such as SN74HCT244DWR and SN74HCT244NSR, which offer surface-mount packaging options like SOIC and SSOP. All variants share the same core logical functionality but differ in physical footprint and mounting style to accommodate diverse PCB layout requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include SN74HCT244DWR and SN74HCT244NSR. These alternatives provide identical logical performance but utilize surface-mount packages instead of the through-hole PDIP configuration.