74LVCH245AQ20-13

Overview

The 74LVCH245AQ20-13 is an octal bus transceiver with bus hold and 3-state outputs manufactured by Diodes Incorporated. It operates within a supply voltage range of 1.65V to 3.6V and features inputs tolerant to 5.5V for mixed-voltage applications. The device supports partial power down via I_OFF circuitry, sinks or sources 24mA at VCC = 3V, and includes Schmitt trigger action at all inputs. It is housed in a QFN-20 (V-QFN4525-20) package.

Feature Summary

• Bus hold circuitry maintains unused or undriven inputs at a high or low logic state without requiring external pull-up or pull-down resistors.
• I_OFF circuitry disables the output to prevent damaging current backflow when the device is powered down, supporting partial power down applications.
• Inputs are tolerant to 5.5V, allowing compatibility with 3.3V or 5V driven signals in mixed voltage environments.

Applications

• General purpose logic
• Bus driving
• Power down signal isolation

Procurement Notes

Verify that the specific part number suffix matches the required package type. Confirm RoHS compliance status and ensure the component meets environmental standards relevant to the target application. Cross-reference datasheet revision numbers to validate electrical characteristics against design requirements.

Selection Notes

Select this component for designs requiring bidirectional data transmission between buses operating at different voltage levels. Ensure the system accommodates the specified input voltage tolerance and consider the thermal resistance characteristics of the QFN-20 package for adequate heat dissipation during operation.

Part Context

This component belongs to the 74LVCH245A family of octal bus transceivers. It provides asynchronous communication capabilities between data buses, controlled by direction and output enable pins. The device is designed for low power consumption and robust performance in portable and computing applications.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

FAQ

How does the device handle unused inputs?

The device incorporates bus hold circuitry that holds unused or undriven inputs at a high or low logic state, eliminating the need for external pull-up or pull-down resistors.

What is the function of the I_OFF circuitry?

The I_OFF circuitry disables the output to prevent damaging current backflow when the device is powered down, enabling safe partial power down operations.