SN74ACT1284PWG4

Specialty Logic Overview

The SN74ACT1284PWG4 is a specialized bus interface component manufactured by Texas Instruments. It features seven-bit data transmission capability with three-state outputs, designed for high-speed digital systems. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from -40°C to +85°C. It is housed in a TSSOP-20 surface-mount package, ensuring compatibility with automated assembly processes while maintaining signal integrity in demanding industrial environments.

Specialty Logic Feature Summary

• Provides seven-bit bidirectional data transfer between buses
• Features three-state outputs for effective bus line isolation
• Supports IEEE-1284 parallel port standard compliance

Specialty Logic Applications

• IEEE-1284 compatible parallel interface systems
• High-speed data bus buffering applications
• Industrial control system interconnects

Specialty Logic Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free construction when sourcing. Confirm the package type matches the required PCB footprint, as variations exist between PW (TSSOP) and PWR (Reel) designations. Ensure the operating environment stays within the specified -40°C to +85°C thermal limits to maintain guaranteed electrical performance and device longevity.

Specialty Logic Selection Notes

Select this component for designs requiring robust 5V logic interfacing with high noise immunity. The ACT series offers faster switching speeds compared to standard HC logic families. Consider the TSSOP-20 package constraints regarding thermal dissipation and board space. Verify that the target system voltage aligns strictly with the 4.5V to 5.5V operational window to prevent malfunction or damage.

Specialty Logic Part Context

This part belongs to the SN74ACT family of advanced CMOS logic devices, known for high-speed operation and compatibility with TTL inputs. The SN74ACT1284 specifically addresses parallel data transfer needs, serving as a bridge between microprocessors and peripheral devices. It complements other bus transceivers like the SN74ACT244 but provides dedicated seven-bit functionality optimized for specific interface standards.

Specialty Logic Replacement Considerations

Direct substitutes include the SN74ACT1284PWR and SN74ACT1284DBLE. Verify pinout compatibility and electrical specifications before swapping. The DBLE variant uses an SSOP package, requiring physical adapter considerations.