74LCX245WMX

Overview

The onsemi 74LCX245WMX is an octal bus transceiver belonging to the 74LCX logic family, designed for low-voltage CMOS applications. It features eight bidirectional data channels with three-state outputs and operates within a supply voltage range of 2 V to 3.6 V. The device provides a propagation delay of 8 ns and supports input levels compatible with LVTTL and TTL standards while delivering LVCMOS output levels. It offers a low-level output current of 24 mA and a high-level output current of -24 mA. Packaged in a 20-SOIC format, it functions as a non-inverting transceiver suitable for asynchronous bidirectional data buses.

Feature Summary

• Provides bidirectional data transmission across eight independent channels controlled by direction and enable signals.
• Features three-state outputs that facilitate connection to multiple sources without electrical interference.
• Supports mixed voltage signaling through compatibility with LVTTL and TTL inputs alongside LVCMOS outputs.

Applications

• Asynchronous bidirectional data buses in microprocessor systems
• Memory interface buffering and signal translation
• Low-voltage communication between different logic families

Procurement Notes

Verify component authenticity and datasheet revisions before integration. Confirm package dimensions match PCB footprint requirements. Check RoHS compliance status for environmental regulations. Ensure supply chain stability due to potential lifecycle changes. Validate operating temperature ranges against system thermal constraints.

Selection Notes

Select this component when designing systems requiring low-voltage operation between 2 V and 3.6 V. Choose this part for applications needing high drive strength of 24 mA per pin. Opt for this transceiver when interfacing TTL or LVTTL logic with LVCMOS devices. Consider the SOIC-20 package for surface-mount assembly needs.

Part Context

This device is part of the 74LCX series, which represents low-voltage CMOS technology optimized for performance and power efficiency. The 74LCX245 variant specifically addresses the need for octal bus transceivers in modern portable and battery-operated electronics where voltage levels are reduced compared to traditional 5 V systems.

Replacement Considerations

Public confirmed substitute part numbers include MC74LCX245DT and SN74LVC245A variants. Verify pinout compatibility and electrical specifications before substitution. Check manufacturer documentation for any functional differences in control logic or output characteristics.