CYBUS3384QC

双5位总线开关 Dual 5-Bit Bus Switch

Functional Description

The CYBUS3384 is a ten-bit, two-port bidirectional bus switch that allows one bus to be connected directly to, or isolated from, another without introducing additional propagation delay or ground noise. The input and output voltage levels allow direct interface with TTL and CMOS devices. Two bus enable signals, BE1 and BE2, turn on the upper and lower five bits, respectively.

Designed with a low resistance of 2Ω, the CYBUS3384 is ideal for use in VME or other high DC drive applications. The power-off disable feature enables modules and cards to be either inserted or withdrawn from operating equipment without shutting down power. Additionally, the CYBUS3384 facilitates bidirectional interfacing between 3.3V and 5V systems by placing a single diode in series with the 5V VCC line and a resistor from pin 24 to ground.

The CYBUS3384 is also suitable for small signal analog applications where crosstalk and off isolation performance of –66 dB at 50 MHz are required.

Features

• Zero propagation delay

• 2Ω switches connect inputs to outputs

• Direct bus connection when switches are ON

• High >500 Meg Ω resistance when switch is OFF

• Performs bidirectional translator function between 3.3V and 5.0V power supplies

• CMOS for low power dissipation

• Edge-rate control circuitry for significantly improved noise characteristics

• Inputs and outputs interface with 5.0V CMOS, TTL, or 3.3V CMOS

• ESD > 2000V

• Power-off disable