74LVCH16T245DLG4

Overview

The SN74LVCH16T245DLG4 is a 16-bit dual-supply bus transceiver manufactured by Texas Instruments. It features configurable voltage translation and three-state outputs, enabling asynchronous communication between buses operating at different voltage levels. The device supports a supply voltage range of 1.65V to 5.5V for both Port A and Port B. It utilizes a common control direction input to manage data flow direction. The component is housed in a 48-pin SSOP package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Configurable voltage translation allows independent power supply rails for Port A and Port B
• Dual-supply architecture supports bidirectional data transfer between different logic voltage domains
• Three-state outputs provide high-impedance states when disabled

Applications

• Asynchronous communication between microprocessors and memory modules
• Voltage level shifting between 1.8V, 2.5V, 3.3V, and 5V systems
• Data bus expansion in industrial and consumer electronic devices

Procurement Notes

Verify the complete part number including the suffix 'G4' to ensure compliance with specific environmental standards such as RoHS. Confirm the package type is SSOP-48 and check the manufacturer datasheet for the latest revision history. Ensure the ordering information matches the exact functional specifications required for the design.

Selection Notes

Select this component when interfacing 16-bit data buses requiring voltage translation between disparate logic families. The dual-supply capability makes it suitable for systems where Port A and Port B operate at different voltages. Consider the propagation delay and output drive current requirements relative to the load capacitance of the connected buses.

Part Context

This device belongs to the LVC/LCX/Z logic series from Texas Instruments. It is part of the broader family of bus transceivers designed for low-voltage applications. The SN74LVCH16T245 variant specifically addresses the need for configurable level-shifting in complex digital systems.

Replacement Considerations

Public confirmed substitute part numbers include SN74LVCH16T245DLR and SN74LVCH16T245DL.B. Verify pin compatibility and electrical characteristics before substitution.