The FSTD3125 is a 4-bit bus switch with level shifting capability. It features a 4Ω switch connection, minimal propagation delay, low ICC, zero bounce, and control inputs compatible with TTL level. It allows voltage translation from 5.0V inputs to 3.3V outputs.
The document describes the Fairchild Semiconductor FSTD3125, a high-speed 4-bit bus switch designed for connecting two ports with minimal propagation delay. The device features integrated level shifting capabilities, allowing inputs at 5.0V to drive outputs at 3.3V without adding delay or generating ground bounce noise.
| Operating Temperature Range | -40 to +85 °C |
|---|---|
| Supply Voltage Range | 4.5 to 5.5 V |
| Output Enable Time | Max 6.1 ns |
The device contains four high-speed CMOS TTL-compatible bus switches.
When /OE is HIGH, the switch opens and a high-impedance state exists between the two ports.