SN74ACT1284NSR

Specialty Logic Overview

The SN74ACT1284NSR is a specialized bus interface transceiver manufactured by Texas Instruments. It provides seven-bit bidirectional data transfer with three-state outputs, designed to comply with the IEEE-1284 standard for parallel peripheral interfaces. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from 0°C to +70°C. Packaged in a 20-pin Small Outline package (SOIC) suitable for surface mount technology, it integrates Schmitt trigger inputs on all channels to ensure noise immunity and clean signal transitions.

Specialty Logic Feature Summary

• Provides seven-bit bidirectional bus interfacing capability compliant with IEEE-1284 standards
• Features three-state outputs allowing direct connection to system buses without external drivers
• Integrates Schmitt trigger inputs on all channels to enhance noise immunity and signal integrity

Specialty Logic Applications

• Parallel printer port implementations adhering to IEEE-1284 specifications
• Bidirectional data buffering between microprocessors and peripheral devices
• Bus-oriented memory and I/O mapping systems requiring high-noise tolerance

Specialty Logic Procurement Notes

Verify that the specific ordering suffix matches the required package type and tape-and-reel configuration. Confirm RoHS compliance status as leaded variants exist within this product family. Ensure the selected variant aligns with the intended industrial or commercial temperature requirements before finalizing procurement orders.

Specialty Logic Selection Notes

Select this component when designing systems requiring robust parallel data transmission with high noise immunity. The inclusion of Schmitt triggers makes it suitable for environments with significant electrical interference. Verify that the 20-pin SOIC footprint fits the target PCB layout constraints and that the 5V logic level compatibility matches the host system voltage.

Specialty Logic Part Context

This part belongs to the SN74ACT series of advanced CMOS logic devices, which offer performance comparable to low-power Schottky TTL but with lower power consumption. The SN74ACT1284 specifically addresses the need for standardized parallel interface solutions, serving as a critical link between digital controllers and legacy or standard parallel peripherals.

Specialty Logic Replacement Considerations

Direct pin-to-pin replacements include other variants within the SN74ACT1284 family, such as the SN74ACT1284N or SN74ACT1284PWR, provided the package style and temperature rating are compatible with the design.