SN74ALS244C-1DWR

Overview

The SN74ALS244C-1DWR is an octal buffer and line driver from the Texas Instruments 74ALS logic family, housed in a 20-pin SOIC package. It features non-inverting outputs with three-state capability controlled by separate output-enable inputs. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical parameters include a high-level output current of -15 mA and a low-level output current of 48 mA. Static current consumption is specified at 9 mA, while operating power supply current reaches 17 mA. The component supports a commercial temperature range from 0°C to +70°C.

Feature Summary

• Octal buffering architecture providing eight independent non-inverting signal paths for data transmission.
• Three-state output design allowing multiple drivers to share bus lines without contention when disabled.
• High-drive capability with asymmetric output currents optimized for driving capacitive loads.

Applications

• Memory address drivers for bus-oriented architectures
• Clock drivers and buffering for timing signals
• Bus-oriented communications interfaces

Procurement Notes

Verify the specific suffix 'C-1' against the manufacturer's official datasheet to confirm pinout compatibility and electrical tolerances. Ensure the SOIC-20 package dimensions match the target PCB footprint. Confirm RoHS compliance status through the latest product information file, as manufacturing origins may vary.

Selection Notes

Select this component when high-speed buffering is required within standard TTL voltage levels. The ALS series offers faster propagation delays compared to standard LS logic while maintaining lower power consumption than AS variants. Verify that the 48 mA low-level sink current meets the load requirements of the destination circuitry.

Part Context

This part belongs to the SN74ALS244 family of octal buffers. It serves as a digital interface component for transferring data between microprocessors and peripheral devices. The device is designed for use in systems requiring reliable signal integrity and bus isolation.

Replacement Considerations

SN74ALS244CDWR

FAQ

How are the three-state outputs controlled?

The outputs are controlled by two separate output-enable inputs (G1 and G2). When these inputs are active, the corresponding four outputs are enabled; otherwise, they enter a high-impedance state.

What is the polarity of the logic function?

The SN74ALS244C-1DWR provides non-inverting logic, meaning the output state follows the input state directly.