74LVCH245AT20-13

Overview

The 74LVCH245AT20-13 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. The device sinks or sources 24mA at VCC = 3V. Inputs are tolerant to 5.5V, allowing use in mixed-voltage environments. Propagation delay is 3.8ns at 3.3V. It features Schmitt trigger action at all inputs and supports partial power down applications using I_OFF circuitry. The package is TSSOP-20.

Feature Summary

• Octal transceiver designed for asynchronous communication between data buses
• Bus hold circuitry holds unused or undriven inputs at a high or low logic state
• I_OFF circuitry disables the output preventing damaging current backflow when powered down
• Inputs accept up to 5.5V allowing for mixed voltage applications

Applications

• General Purpose Logic
• Bus Driving
• Power Down Signal Isolation
• Networking Computer Peripherals
• Hard Drives

Procurement Notes

Verify the component matches the exact part number 74LVCH245AT20-13 from Diodes Incorporated. Confirm the package type is TSSOP-20 as specified in the ordering information. Ensure the datasheet revision aligns with DS35891 Rev. 1 - 2. Check for RoHS compliance and lead-free status if required by your manufacturing process. Validate that the supplier provides official documentation.

Selection Notes

Select this component for designs requiring bidirectional data transfer between two 8-bit buses. It is suitable for mixed-voltage systems due to its 5.5V input tolerance. The bus hold feature simplifies design by eliminating the need for external pull-up or pull-down resistors. Consider the 3-state output capability for bus isolation requirements. Verify power supply constraints fit within the 1.65V to 3.6V operating range.

Part Context

This part belongs to the 74LVCH245A series of octal bus transceivers. It is part of Diodes Incorporated's LVCH logic family, which offers low voltage and high speed performance. The 'T20' suffix indicates the TSSOP-20 package option. The '-13' suffix denotes tape and reel packaging. This series is designed for general-purpose logic applications in consumer electronics and computing peripherals.

Replacement Considerations

Check for other packages in the same series, such as 74LVCH245AQ20-13 (QFN-20). Verify pin compatibility if substituting with similar parts from other manufacturers. Ensure electrical characteristics like propagation delay and output current meet system requirements. Confirm that any replacement also supports the required voltage levels and bus hold functionality.