SN74CB3Q16210中文资料具有 2 个控制输入的 3.3V、1:1 (SPST)、20 通道 FET 总线开关数据手册TI规格书

描述 Description

The SN74CB3Q16210 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q16210 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems. The SN74CB3Q16210 is organized as two 10-bit bus switches with separate output-enable (1OE\\, 2OE\\) inputs. It can be used as two 10-bit bus switches or as one 20-bit bus switch. When OE\\ is low, the associated 10-bit 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 associated 10-bit bus switch is OFF, and a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry prevents damaging current 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 driver.

特性 Features

• Member of the Texas Instruments Widebus™ Family
• 5-V Tolerant I/Os with Device Powered Up or Powered Down
• Rail-to-Rail Switching on Data I/O Ports
• 0-V to 3.3-V Switching With 2.5-V VCC
• Bidirectional Data Flow, With Near-Zero Propagation Delay
• Fast Switching Frequency (fOE\\ = 20 MHz Max)
• Low Power Consumption (ICC = 1 mA Typical)
• Data I/Os Support 0 V 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)
• Ioff Supports Partial-Power-Down Mode Operation
• ESD Performance Tested Per JESD 22
• 1000-V Charged-Device Model (C101)
• Supports Both Digital and Analog Applications: PCI Interface, Differential Signal Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating
For additional information regarding the performance characteristics of the CB3Q family, refer to the TI application report, CBT-C, CB3T, and CB3Q Signal-Switch Families, literature number SCDA008. Widebus is a trademark of Texas Instruments.