The FST3126 is a quad high-speed CMOS TTL-compatible bus switch that provides low on-resistance and minimal propagation delay, allowing inputs to be connected to outputs without adding delay or generating additional ground bounce noise. The device consists of four 1-bit switches with separate OE inputs. When OE is high, the switch is on and Port A is connected to Port B. When OE is low, the switch is open and a high-impedance state exists between the two ports.
The document describes the Fairchild FST3126, a device providing four high-speed CMOS TTL-compatible bus switches. It features low on-resistance to minimize propagation delay and ground bounce noise, with separate Output Enable (OE) inputs for each switch.
The datasheet provides absolute maximum ratings, recommended operating conditions, DC electrical characteristics including input/output voltages and currents, AC electrical characteristics such as propagation delay and enable/disable times, capacitance values, and physical dimensions for SOIC, QSOP, and TSSOP packages.
| Supply Voltage (Vcc) | 4.0V to 5.5V |
|---|---|
| Free Air Operating Temperature | -40 °C to +85 °C |
| Package Types | SOIC, QSOP, TSSOP |
It provides four high-speed CMOS TTL-compatible bus switches.
The power supply should be between 4.0V and 5.5V.