74LCXH2245SJ

Overview

The onsemi 74LCXH2245SJ is a low-voltage bidirectional transceiver featuring eight non-inverting buffers with three-state outputs. It operates within a supply voltage range of 2.0V to 3.6V and supports data rates up to 10mA quiescent current. The device incorporates active bushold circuitry on inputs, eliminating the need for external pull-up or pull-down resistors. It includes an equivalent 26Ω series resistor in the B port outputs to reduce overshoot and undershoot. The component is housed in a Pb-Free 20-Lead Small Outline Package (SOP) with a width of 5.3mm.

Feature Summary

• Active bushold circuitry on data inputs eliminates the requirement for external pull-up or pull-down resistors.
• Integrated equivalent 26Ω series resistor in B port outputs reduces signal overshoot and undershoot.
• Five-volt tolerant control inputs allow compatibility with mixed-voltage systems.
• Advanced CMOS technology ensures high-speed operation while maintaining low power dissipation.

Applications

• Bus-oriented applications requiring bidirectional data communication
• Low voltage (2.5V and 3.3V) system interconnects
• Mixed-voltage environments utilizing 5V tolerant control signals

Procurement Notes

Verify the specific package designation M20D corresponds to the required 20-lead SOP form factor. Confirm that the 5.3mm width meets board layout constraints. Ensure design requirements align with the specified 2.0V to 3.6V operating voltage range and temperature specifications before finalizing procurement.

Selection Notes

Select this component when bus-oriented bidirectional buffering is required with integrated noise reduction features. The inclusion of bushold simplifies input handling for floating lines. Verify that the B port output drive capabilities meet load requirements. Consider the 26Ω series resistance impact on signal integrity for high-speed transitions.

Part Context

This device belongs to the LCXH family of low-voltage logic components designed for modern electronic systems. It provides bidirectional data transfer capabilities suitable for various digital interfaces. The SOP package offers a compact solution for space-constrained designs requiring robust signal transmission characteristics.

Replacement Considerations

Check datasheets for alternative transceivers offering similar bushold functionality and 5V tolerance. Verify pinout compatibility and electrical parameters such as propagation delay and output drive strength. Ensure replacement packages match physical footprint requirements.

FAQ

What is the function of the bushold feature?

Bushold maintains unused or floating data inputs at a valid logic level without requiring external pull-up or pull-down resistors.

How does the B port series resistor benefit the circuit?

The equivalent 26Ω series resistor helps reduce output overshoot and undershoot, improving signal integrity.

Is the device compatible with 5V control signals?

Yes, the control inputs are 5V tolerant, allowing safe operation in mixed-voltage environments.