●The SN74CBT3245C is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT3245C provides protection for undershoot up to 2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state.
●The SN74CBT3245C is organized as an 8-bit bus switch with a single output-enable (OE)\ input. When OE\ is low, the bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE\ is high, the bus switch is OFF, and the high-impedance state exists between the A and B 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.
●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 driver.
● Undershoot Protection for Off-Isolation on A and B Ports Up to 2 V
● Bidirectional Data Flow, With Near-Zero Propagation Delay
● Low ON-State Resistance (ron) Characteristics (ron = 3 Typical)
● Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cio(OFF) = 5 pF Typical)
● Data and Control Inputs Provide Undershoot Clamp Diodes
● Low Power Consumption (ICC = 3 µA Max)
● VCC Operating Range From 4 V to 5.5 V
● Data I/Os Support 0 to 5-V Signaling Levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)
● Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
● Ioff Supports Partial-Power-Down Mode Operation
● Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
● ESD Performance Tested Per JESD 22
● 2000-V Human-Body Model (A114-B, Class II)
● 1000-V Charged-Device Model (C101)
● Supports Both Digital and Analog Applications: USB Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating
