TC74VCX163245(EL,F

Overview

The TC74VCX163245 is a dual supply, advanced high-speed CMOS 16-bit bus transceiver fabricated with silicon gate CMOS technology. It provides bidirectional data transmission between two independent buses controlled by a direction input (DIR) and an enable input (OE). The device features overvoltage tolerant inputs and outputs up to 3.6 V, allowing safe interfacing between mixed voltage systems such as 1.8 V/2.5 V and 2.5 V/3.6 V. It operates within a wide temperature range of -40°C to 125°C and includes protection circuits against static discharge.

Feature Summary

• Dual supply architecture supporting mixed voltage interfaces between 1.8 V, 2.5 V, and 3.6 V domains
• High-speed operation with propagation delays as low as 4.6 ns under specific voltage conditions
• Robust output drive capability providing minimum currents of ±6 mA to ±24 mA depending on supply voltage
• Integrated power-down protection and overvoltage tolerance on all inputs and outputs up to 3.6 V

Applications

• Interface between 1.8 V or 2.5 V buses and 2.5 V or 3.6 V buses in mixed supply systems
• Bidirectional data communication in embedded systems requiring level shifting
• Memory interface applications connecting different voltage logic families

Procurement Notes

Verify the manufacturing date when specifying the operating temperature range. The extended specification of Topr = -40°C to 125°C applies exclusively to units manufactured after April 2020. Earlier production batches may have a narrower operating temperature range. Confirm package availability in TSSOP48 and ensure design compliance with absolute maximum ratings to prevent damage from overvoltage conditions during power-off states.

Selection Notes

Select this component for designs requiring bidirectional translation between distinct voltage domains without inversion. Ensure the B-port connects to the lower voltage bus (1.8 V or 2.5 V) and the A-port to the higher voltage bus (2.5 V or 3.6 V), as the device is not intended for use where VCCB exceeds VCCA. Consider the propagation delay variations across different voltage combinations when designing for high-speed timing constraints.

Part Context

This device belongs to the TC74VCX series of advanced high-speed CMOS logic components. It serves as a specialized solution for dual-supply applications, distinguishing itself from single-supply transceivers by its ability to handle asymmetric voltage levels on its two ports. The 16-bit width allows for efficient parallel data transfer, reducing pin count compared to using multiple 8-bit devices.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.