ON Semiconductor 74VCX16838MTD: Low Voltage 20-Bit Universal Bus Driver

The ON Semiconductor 74VCX16838MTD is a high-performance, 20-bit universal bus driver designed for use in 3.3V and 2.5V voltage supply systems. This device is part of the VCX range, which is renowned for its versatility in voltage translation and interfacing applications. The 74VCX16838MTD is housed in a 56-lead TSSOP package, providing a compact footprint for space-constrained applications.

Featuring non-inverting buffers, the 74VCX16838MTD comes with 3-state outputs that enable direct interfacing with bus lines. This makes it an ideal solution for driving heavily loaded buses with the lowest full-swing voltage, which is crucial for maintaining signal integrity in modern digital systems. Its bus-hold circuitry eliminates the need for external pull-up or pull-down resistors, simplifying design and reducing component count.

The device is characterized for operation from -40°C to +85°C, ensuring reliable performance across a broad range of industrial and commercial temperature ranges. The 74VCX16838MTD also offers a power-off high impedance input and output feature, which guarantees that the I/O lines won't load the bus when the device is powered down. This is particularly useful in power-saving modes and during system initialization when power domains are not yet fully established.

Key features of the 74VCX16838MTD include:

• Low voltage operation: 2.3V to 3.6V
• High-speed operation: t_PD 3.6 ns (max) at 3.3V
• Power-off high impedance inputs and outputs
• Supports live insertion and withdrawal (partial-power-down compliant)
• Latch-up performance exceeds 300 mA per JESD 78, Class II
• ESD performance:
  • Human-body model: >2000V
  • Machine model: >200V
  • Charged-device model: >1000V
• Bus hold on data inputs eliminates the need for external pull-up/pull-down resistors
• Package: 56-lead TSSOP

The 74VCX16838MTD's advanced features make it suitable for a variety of applications, including bus driving, memory interfacing, and data transmission in systems such as servers, networking, telecommunications, and high-speed data acquisition. With its robust design and compatibility with mixed-voltage systems, the ON Semiconductor 74VCX16838MTD stands out as a reliable and efficient solution for modern digital applications.