74FCT162245ATPACT

Overview

The Texas Instruments 74FCT162245ATPACT is a 16-bit bus transceiver belonging to the 74FCT logic family. It integrates two independent 8-bit transceivers with non-inverting true outputs and three-state capability. The device operates within a supply voltage range of 4.5V to 5.5V and supports bidirectional data transfer controlled by a direction signal. It utilizes TTL-compatible input and output levels, ensuring compatibility with standard digital systems. The component is housed in a 48-pin TSSOP package designed for surface-mount applications.

Feature Summary

• Integrates dual 8-bit bidirectional bus transceivers within a single package
• Provides three-state outputs to facilitate bus line management
• Features non-inverting true output polarity for direct signal transmission
• Supports TTL-compatible input and output voltage levels

Applications

• High-speed data bus interfaces in computing systems
• Memory buffer applications requiring bidirectional data flow
• I/O expansion circuits connecting microprocessors to peripherals
• Digital communication links requiring isolated bus segments

Procurement Notes

Verify the specific manufacturer designation as Texas Instruments or its acquired entities like IDT/Renesas, as part numbers may vary across corporate transitions. Confirm the exact suffix 'TPACT' corresponds to the intended tape-and-reel packaging format. Ensure the component meets current RoHS compliance standards required for your manufacturing process. Cross-reference the datasheet revision date to confirm technical specifications have not changed due to product lifecycle updates.

Selection Notes

Select this component when designing systems requiring high-speed 16-bit data transfer with minimal propagation delay. It is suitable for applications needing balanced drive strength compared to higher-current variants. Consider the 48-pin TSSOP footprint constraints during PCB layout planning. Ensure the system power supply remains stable within the 4.5V to 5.5V range to maintain signal integrity and prevent latch-up conditions.

Part Context

This device is part of the broader 74FCT series, which serves as a Fast CMOS replacement for older transistor-transistor logic families. It offers improved speed and lower power consumption while maintaining pinout compatibility with legacy designs. The 162245 variant specifically provides dual 8-bit channels, making it distinct from single-channel or higher-density alternatives in the same logical family.

Replacement Considerations

The TI 74FCT162H245ATPACT is documented as obsolete with available substitutes including the Renesas CY74FCT162245CTPAG. Verify electrical parameter equivalence before substitution. Check for any differences in package dimensions or thermal characteristics between the original and replacement parts.