Bus Switch 1-Element CMOS 8-IN 20-Pin TVSOP T/R

The SN74CBTLV3245 provides eight bits of high-speed bus switching in a standard 245 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as one 8-bit switch. When output enable (OE) is low, the 8-bit bus switch is on, and port A is connected to port B. When OE is high, the switch is open, and the high-impedance state exists between the two ports. This device is fully specified for partial-power-down applications using Ioff . The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off. To ensure the high-impedance state during power up or power down, OE should be tied to Vcc through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the drive.

• Standard 245-Type Pinout
• 5-? Switch Connection Between Two Ports
• Rail-to-Rail Switching on Data I/O Ports
• Ioff Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 250 mA Per JESD 17
• ESD Protection Exceeds JESD 22
  • 200-V Machine Model (A115-A)
  • 2000-V Human-Body Model (A114-A)