ON Semiconductor 74VCX16245GX: 16-Bit Bidirectional Transceiver

The 74VCX16245GX from ON Semiconductor is a high-performance, 16-bit bidirectional transceiver designed for asynchronous communication between data buses. This device is part of the VCX family, which is renowned for low voltage operation and high-speed interfacing. With its ability to operate at 3.3V, it is particularly well-suited for systems that require low power consumption and high-speed data transfer capabilities.

The transceiver features two separate 8-bit or one 16-bit bus transceiver with 3-state outputs, which allows for bidirectional data flow. It is designed with the capability to interface between 3.3V and 5V buses in a mixed-voltage environment. The 74VCX16245GX boasts a high drive capability, with -32 mA IOH and 64 mA IOL at 3.0V, making it ideal for driving high-capacitive loads and ensuring signal integrity.

One of the key attributes of this component is its bus-hold circuitry, which eliminates the need for external pull-up or pull-down resistors and helps to maintain the last active state during periods of bus contention or floating. The device also features a power-off disable functionality that ensures the outputs enter a high-impedance state during power down, which helps to prevent backflow current that could damage the device.

For enhanced versatility, the 74VCX16245GX supports live insertion and withdrawal, making it an excellent choice for hot-swapping applications. Its non-preferential power-up sequencing allows for flexibility in system design, as the IC does not require a specific power supply ramp sequence.

ON Semiconductor's 74VCX16245GX is available in a fine-pitch TSSOP package, which is optimized for reduced space on PCBs. It is fully specified for partial-power-down applications using IOFF, which supports the partial Power-down mode by ensuring that the input circuit is disabled to prevent backflow current. This product is a reliable solution for high-speed digital interfacing and bus matching in telecom, computing, and industrial applications where low voltage operation and high-speed data transfer are essential.

Key Features:

• 16-bit bidirectional data flow
• 3.3V operation with 5V tolerant inputs
• High-speed data transfer capabilities
• Bus-hold circuitry and power-off disable feature
• Live insertion and withdrawal support
• Non-preferential power-up sequencing
• IOFF circuitry for partial power-down mode
• Available in a space-saving TSSOP package