SN74HCS244RKSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCS244RKSR is an octal buffer and line driver manufactured by Texas Instruments, featuring Schmitt-trigger inputs and three-state outputs. It operates within a wide supply voltage range of 2 V to 6 V and supports an extended ambient temperature range from -40°C to +125°C. The device provides ±7.8-mA output drive capability at 6 V and exhibits low power consumption with typical ICC of 100 nA. Packaged in a 20-pin VQFN (RKS) format measuring 4.50 mm × 2.50 mm, it includes wettable flanks for improved solder joint inspection.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Schmitt-trigger inputs provide high tolerance to slow or noisy input signals through built-in hysteresis
• Balanced CMOS three-state outputs allow for controlled signal driving and high-impedance isolation
• Low power consumption design minimizes static current draw during operation
• Wettable flank package construction facilitates reliable side fillet formation and automated optical inspection

Buffers, Drivers, Receivers, Transceivers Applications

• Enable or disable digital signals within a system
• Eliminate slow or noisy input signals before processing
• Hold a signal stable during controller reset sequences
• Debounce mechanical switches to prevent false triggering

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific RKS suffix indicates the VQFN-20 package configuration when ordering. Confirm that the component meets the required operating temperature range for your application environment. Ensure proper ESD handling procedures are followed during storage and assembly due to the CMOS technology used in this logic family.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring noise immunity for slow-rising signals or harsh electrical environments. The wide voltage range allows compatibility with various logic families without level shifting. Consider the thermal resistance characteristics if the device will operate near maximum temperature limits under heavy load conditions.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HCS244 series of octal buffers and line drivers. It shares functional similarities with other members of the HCS logic family but offers specific packaging options like the VQFN variant. The series is designed for general-purpose buffering and line driving applications where signal integrity and power efficiency are critical requirements.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include other SN74HCS244 variants with different package suffixes such as DGS for SOT-20 packages. Cross-manufacturer equivalents may exist but require verification of pinout compatibility and electrical specifications against the original datasheet requirements.

Buffers, Drivers, Receivers, Transceivers FAQ

How do Schmitt-trigger inputs benefit signal processing?

Schmitt-trigger inputs provide hysteresis that prevents oscillation caused by noise or slow signal transitions, ensuring clean logic state changes even with degraded input waveforms.

What happens to the outputs when the enable pins are high?

When either output enable pin is in the high state, the corresponding bank of four outputs enters a high-impedance state, effectively disconnecting them from the circuit.