74LCXH245MTCX

Overview

The 74LCXH245MTCX is an octal bus transceiver with three-state outputs and bushold inputs, manufactured by ON Semiconductor. It operates within a supply voltage range of 2.3V to 3.6V. The device features 5V tolerant control inputs and implements patented noise reduction circuitry. Key electrical specifications include a maximum propagation delay of 7.0 ns at VCC = 3.3V, a maximum quiescent supply current of 10 µA, and output drive capabilities of ±24 mA at VCC = 3.0V. It provides latch-up performance exceeding 500 mA and ESD protection ratings greater than 2000V via the human body model.

Feature Summary

• Bushold input circuitry eliminates the need for external pull-up or pull-down resistors on unused or floating data lines.
• Patented noise and EMI reduction circuitry ensures stable operation in high-speed environments.
• 5V tolerant control inputs allow safe interfacing between low-voltage logic and higher-voltage systems.

Applications

• Bus-oriented applications requiring bidirectional data transfer
• Low voltage (2.5V and 3.3V) system interconnects
• High-speed digital signal routing

Procurement Notes

Verify the specific package variant when ordering, as the datasheet lists multiple options including SOIC, SOP, SSOP, and TSSOP. Confirm that the suffix 'X' corresponds to the Tape and Reel packaging format required for your assembly process. Ensure compatibility with the 2.3V–3.6V operating voltage range specified for this component family.

Selection Notes

Select this component for designs requiring robust bushold functionality to simplify interface circuits without external resistors. It is suitable for applications demanding low power dissipation alongside high-speed performance. Verify that the 5V tolerant inputs align with the driving logic levels present in the target system architecture.

Part Context

This part belongs to the LCXH series of low-voltage CMOS devices. It serves as a bidirectional buffer designed for bus-oriented applications. The MTCX suffix indicates the Thin Shrink Small Outline Package (TSSOP) configuration with tape and reel delivery. It is part of ON Semiconductor's portfolio following the integration of Fairchild Semiconductor products.

Replacement Considerations

Consult official cross-reference documentation for verified substitutes. Generic replacements may not support the specific bushold feature or 5V tolerance characteristics defined in the original datasheet.

FAQ

What is the function of the bushhold feature?

The bushold feature maintains unused or floating data inputs at a valid logic level, removing the requirement for external pull-up or pull-down resistors.

How does the OE pin affect the device?

When the Output Enable (OE) input is high, it disables both the A and B ports, placing them in a high impedance state.