SN74CBTLV16800VR集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

SN74CBTLV16800VR属于集成电路（IC）的信号开关多路复用器解码器。由德州仪器制造生产的SN74CBTLV16800VR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。

FEATURES

· Member of the Texas Instruments Widebus™

Family

· 5-W Switch Connection Between Two Ports

· Rail-to-Rail Switching on Data I/O Ports

· Ioff Supports Partial-Power-Down Mode

Operation

· B-Port Outputs Are Precharged by Bias

Voltage to Minimize Signal Distortion During

Live Insertion

· Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

· ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

DESCRIPTION/ORDERING INFORMATION

The SN74CBTLV16800 provides 20 bits of

high-speed bus switching. The low on-state

resistance of the switch allows connections to be

made with minimal propagation delay. The device

also precharges the B port to a user-selectable bias

voltage (BIASV) to minimize live-insertion noise.

The device is organized as dual 10-bit bus switches

with separate output-enable (OE) inputs. It can be

used as two 10-bit bus switches or one 20-bit bus

switch. When OE is low, the associated 10-bit bus

switch is on, and port A is connected to port B. When

OE is high, the switch is open, the high-impedance

state exists between the two ports, and port B is

precharged to BIASV through the equivalent of a

10-kW resistor.

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 driver.