74ABT2244CPC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ABT2244CPC is an octal buffer and line driver belonging to the 74ABT logic series. It features eight non-inverting inputs and outputs with three-state control, housed in a 20-pin PDIP package. The device operates within a supply voltage range of 4.5V to 5.5V. Key electrical parameters include a high-level output current of -32mA and a low-level output current of 15mA. Propagation delay is specified at 4.4ns at 5V. The component supports surface mount or through-hole installation styles and functions reliably across an operating temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides octal buffering and line driving capabilities for digital signal transmission
• Features three-state outputs allowing multiple drivers on shared buses without interference
• Non-inverting polarity ensures input signals are transmitted to outputs without logical inversion

Buffers, Drivers, Receivers, Transceivers Applications

• Memory bus interface circuits requiring high-speed data buffering
• Microprocessor system address and data line drivers
• Communication systems utilizing parallel data transmission paths

Buffers, Drivers, Receivers, Transceivers Procurement Notes

This specific part number is identified as obsolete and no longer manufactured by the original producer. Verification of availability requires checking secondary market distributors or authorized surplus dealers. Buyers must confirm the authenticity and physical condition of existing stock, as these components may have been stored for extended periods. Cross-referencing with equivalent active parts from other manufacturers is recommended for new designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Engineers selecting this component should verify compatibility with existing 74ABT family logic levels. The 20-pin DIP package dictates specific PCB footprint requirements compared to surface-mount alternatives. Designers must ensure power supply rails remain strictly within the 4.5V to 5.5V window to prevent device malfunction. Thermal management considerations are necessary given the operational temperature limits and output drive currents specified in the datasheet.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74ABT2244 belongs to the advanced BiCMOS ABT logic family, known for combining high speed with CMOS power efficiency. This specific variant serves as an octal buffer, distinct from bidirectional transceivers like the 244 series. It was commonly used in legacy computer architectures and industrial control panels where robust parallel data handling was required before the widespread adoption of lower-voltage LVCMOS standards.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74ABT2244AN (Texas Instruments)