SN74CBT16214C中文资料具有 –2V 下冲保护功能的 5V、3:1、12 通道通用模拟多路复用器数据手册TI规格书

描述 Description

The SN74CBT16214C is a high-speed TTL-compatible FET multiplexer/demultiplexer with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT16214C 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 SN74CBT16214C is a 12-bit 1-of-3 multiplexer/demultiplexer. The select (S0, S1, S2) inputs control the data path of each multiplexer/demultiplexer. When the multiplexer/demultiplexer is enabled, the A port is connected to the B port, allowing bidirectional data flow between ports. When the multiplexer/demultiplexer is disabled, 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 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, each select input should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.

特性 Features

• Member of the Texas Instruments Widebus™ Family
• Bidirectional Data Flow, With Near-Zero Propagation Delay
• Low Input/Output Capacitance Minimizes Loading and Signal Distortion    (Cio(OFF) = 5.5 pF Typical)
• Low Power Consumption    (ICC = 3 µA Max)
• Data I/Os Support 0 to 5-V Signaling Leveles (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
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• 2000-V Human-Body Model (A114--B, Class II)
• Supports Both Digital and Analog Applications: PCI Interface, USB Interface, Bus Isolation, Low-Distortion Signal Gating
Widebus is a trademark of Texas Instruments.

简介

SN74CBT16214C属于集成电路（IC）的信号开关多路复用器解码器。由TI制造生产的SN74CBT16214C信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。