74ACT18825SSCX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACT18825SSCX is an 18-bit non-inverting buffer and line driver featuring 3-STATE outputs, housed in a 56-lead SSOP package. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature from -40°C to +85°C. The device provides separate byte control for two 9-bit segments, allowing independent high-impedance management. Outputs source and sink up to 24 mA with TTL-compatible inputs. Propagation delays are guaranteed up to 9.2 ns at maximum temperatures.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Contains eighteen non-inverting buffers with 3-STATE outputs designed for memory, address, or clock driving applications.
• Features byte-controlled operation with separate Output Enable (OE_n) inputs for each 9-bit segment.
• Broadside pinout configuration facilitates simplified printed circuit board layout.
• Outputs provide robust drive capability by sourcing and sinking 24 mA.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory and address drivers
• Clock drivers
• Bus-oriented transmitter/receiver circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the component status as this specific part number may be obsolete. Confirm that the 56-lead SSOP package dimensions match the design footprint. Ensure the replacement solution maintains the required 3-STATE logic levels and electrical characteristics for the target application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an 18-bit wide data path requires independent byte-level tri-state control. The ACT series ensures compatibility with standard TTL logic thresholds while providing CMOS drive strength. Verify that the system power supply remains strictly within the 4.5V to 5.5V operational limits to maintain signal integrity.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ACT logic family, characterized by high-speed CMOS technology compatible with TTL inputs. It serves as a specialized buffer solution for systems requiring wider data buses than standard octal drivers can support. The broadside pinout distinguishes it from traditional parallel output configurations.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The Texas Instruments 74ACT16825DLR is listed as a parameter-equivalent substitute.

Buffers, Drivers, Receivers, Transceivers FAQ

How is the 3-STATE functionality controlled?

Each 9-bit byte has a dedicated Output Enable (OE_n) input. When OE_n is HIGH, the corresponding outputs enter a high-impedance state.

Can the bytes be operated independently?

Yes, the device allows independent control of each byte via separate OE pins, which can also be shorted together for full 18-bit simultaneous operation.