SN74ACT244DGSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ACT244DGSR is an octal buffer and driver featuring three-state outputs, manufactured using Texas Instruments ACT CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts input voltages up to 5.5 V. The device provides a maximum propagation delay of 9.5 ns at 5 V and features TTL-compatible inputs. It is organized as two independent four-bit buffers with separate active-low output-enable (OE) inputs. The component is housed in a 20-pin VSSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides high-drive capability with 24-mA current drive per channel for improved performance and density in bus-oriented applications.
• Features non-inverting data transfer from A inputs to Y outputs when the OE pin is low, entering a high-impedance state when OE is high.
• Ensures stable high-impedance states during power-up or power-down conditions through proper OE biasing.

Buffers, Drivers, Receivers, Transceivers Applications

• LED displays
• Servers and telecommunication systems
• Switching networks

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DGSR' corresponds to the VSSOP-20 package and tape-and-reel carrier configuration. Confirm that the operating temperature rating aligns with system requirements, as catalog versions may differ from automotive or military variants. Ensure ESD precautions are observed during handling and installation to prevent damage to the CMOS inputs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring octal buffering with independent control over two groups of four channels. Verify that the 4.5-V to 5.5-V supply range matches the system power rails. Consider the 9.5-ns propagation delay for timing constraints. Ensure unused inputs are tied to VCC or GND to prevent undefined operational states.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4ACT244 family of octal buffers and drivers designed to enhance the performance of three-state memory address drivers, clock drivers, and bus-oriented receivers. The ACT logic family combines the speed of bipolar circuits with the low power consumption of CMOS technology, making it suitable for high-density digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ACT244DWRG4: SOIC-20 package variant with identical electrical characteristics.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle the high-impedance state?

When the active-low output-enable (OE) input is high, the outputs enter a high-impedance state. For reliable operation during power-up or power-down, OE should be tied to VCC through a pullup resistor.

Are the inputs compatible with TTL logic levels?

Yes, the inputs are TTL-compatible and accept a minimum high-level input voltage of 2 V at a 5-V supply.