The FSTD16861 is a product that provides 20 bits of high-speed CMOS TTL-compatible bus switching with level shifting capabilities. It has a low On Resistance, allowing inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device also includes a diode to VCC for level shifting between 5V inputs and 3.3V outputs. It can be used as a 10-bit or 20-bit bus switch.
The Fairchild Semiconductor FSTD16861 is a 20-bit high-speed CMOS bus switch designed for TTL-compatible applications. It features integrated level shifting to translate voltages from 5.0V inputs to 3.3V outputs, making it suitable for interfacing different logic levels. The device is organized as either a 10-bit or 20-bit switch, allowing Port 1A to connect to Port 1B and Port 2A to connect to Port 2B when their respective enable inputs are LOW.
| Number of Switch Connections | 402 |
|---|---|
| Supply Voltage (Vcc) | 4.5V to 5.5V |
| Free Air Operating Temperature | -40 °C to +85 °C |
| Switch On Resistance | 4 to 7 Ohms |
| Package Description | 48-Lead Thin Shrink Small Outline Package (TSSOP) |
The device provides TruTranslation voltage translation from 5.0V inputs to 3.3V outputs.
When OE is LOW, the switch is ON and Port 1A is connected to Port 1B.