This document is the datasheet for FST16861 20-Bit Bus Switch
The Fairchild Semiconductor FST16861 is a 20-bit bus switch designed to provide high-speed CMOS TTL-compatible switching between two ports. The device features minimal propagation delay and zero bounce in flow-through mode, making it suitable for connecting inputs to outputs without adding significant delay or ground bounce noise. It is organized as either a 10-bit or 20-bit switch, controlled by an OE input that determines the connection state between Port 1A/1B and Port 2A/2B.
| Switch On Resistance (Ron) | 4 ohms (typical) |
|---|---|
| Package Description | 48-Lead Thin Shrink Small Outline Package (TSSOP) |
| Operating Temperature Range | -40 °C to +85 °C |
When OE is LOW, the switch is ON and Port 1A is connected to Port 1B, and Port 2A is connected to Port 2B. When OE is HIGH, a high impedance state exists between the A and B Ports.
Yes, the device provides high-speed CMOS TTL-compatible bus switching.