This 10-bit FET bus switch is designed for 3-V to 3.6-V V_CC operation and SSTL_2 output-enable (OE\) input levels.

When OE\ is low, the 10-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. There are 10-k pulldown resistors to ground on the B port.

The FET switch on-state resistance is designed to replace the series terminating resistor in the SSTL_2 data path.

This device is fully specified for partial-power-down applications using I_off. The I_off feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

• Enable Signal Is SSTL_2 Compatible
• Flow-Through Architecture Optimizes PCB Layout
• Designed for Use With 200 Mbit/s Double Data-Rate (DDR) SDRAM Applications
• Switch On-State Resistance Is Designed to Eliminate Series Resistor to DDR SDRAM
• Internal 10-k Pulldown Resistors to Ground on B Port
• Internal 50-k Pullup Resistor on Output-Enable Input
• Rail-to-Rail Switching on Data I/O Ports
• Ioff Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II

• Configuration
• 1:1 SPST
• Number of channels (#)
• 10
• Power supply voltage - single (V)
• 3.3
• Protocols
• Analog
• Ron (Typ) (Ohms)
• 5
• ON-state leakage current (Max) (μA)
• 1000
• Bandwidth (MHz)
• 200
• Operating temperature range (C)
• -40 to 85
• Features
• Powered-off protection
• Input/output continuous current (Max) (mA)
• 48
• Rating
• Catalog

SN74CBTLV3857的完整型号有：SN74CBTLV3857DWR，以下是这些产品的关键参数及官网采购报价：

SN74CBTLV3857DWR，工作温度：-40 to 85，封装：SOIC (DW)-24，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74CBTLV3857DWR的批量USD价格：0.286（1000+）

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