产品详细信息

Configuration 8:1 Number of channels (#) 1 Power supply voltage - single (V) 2.5, 3.3 Protocols Analog Ron (Typ) (Ohms) 3.5 CON (Typ) (pF) 15 Bandwidth (MHz) 500 Operating temperature range (C) -40 to 85 Features Powered-off protection, Supports input voltage beyond supply Input/output continuous current (Max) (mA) 64 Rating Catalog Supply current (Typ) (uA) 600
Configuration 8:1 Number of channels (#) 1 Power supply voltage - single (V) 2.5, 3.3 Protocols Analog Ron (Typ) (Ohms) 3.5 CON (Typ) (pF) 15 Bandwidth (MHz) 500 Operating temperature range (C) -40 to 85 Features Powered-off protection, Supports input voltage beyond supply Input/output continuous current (Max) (mA) 64 Rating Catalog Supply current (Typ) (uA) 600
SSOP (DBQ) 16 29 mm² 4.9 x 6 TSSOP (PW) 16 22 mm² 4.4 x 5 TVSOP (DGV) 16 23 mm² 3.6 x 6.4 VQFN (RGY) 16 14 mm² 4 x 3.5
  • High-Bandwidth Data Path (up to 500 MHz (1))
  • Equivalent to IDTQS3VH251 Device
  • 5-V Tolerant I/Os With Device Powered Up or Powered Down
  • Low and Flat ON-State Resistance (ron) Characteristics Over Operating Range (ron = 4
  • High-Bandwidth Data Path (up to 500 MHz (1))
  • Equivalent to IDTQS3VH251 Device
  • 5-V Tolerant I/Os With Device Powered Up or Powered Down
  • Low and Flat ON-State Resistance (ron) Characteristics Over Operating Range (ron = 4

The SN74CB3Q3251 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 SN74CB3Q3251 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q3251 is a 1-of-8 multiplexer/demultiplexer with a single output-enable (OE\) input. The select (S0, S1, S2) inputs control the data path of the multiplexer/demultiplexer. When OE\ is low, the multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE\ is high, the multiplexer/demultiplexer is disabled, 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.

The SN74CB3Q3251 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 SN74CB3Q3251 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q3251 is a 1-of-8 multiplexer/demultiplexer with a single output-enable (OE\) input. The select (S0, S1, S2) inputs control the data path of the multiplexer/demultiplexer. When OE\ is low, the multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE\ is high, the multiplexer/demultiplexer is disabled, 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.

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类型 项目标题 下载最新的英语版本 日期
* 数据表 SN74CB3Q3251 数据表 (Rev. A) 23 Mar 2005
应用手册 选择正确的德州仪器 (TI) 信号开关 (Rev. E) PDF | HTML 下载英文版本 (Rev.E) PDF | HTML 05 Aug 2022
应用手册 CBT-C、CB3T 和 CB3Q 信号开关系列 (Rev. C) PDF | HTML 下载英文版本 (Rev.C) PDF | HTML 11 Mar 2022
应用手册 多路复用器和信号开关词汇表 (Rev. B) 下载英文版本 (Rev.B) PDF | HTML 11 Mar 2022
应用手册 利用关断保护信号开关消除电源时序 (Rev. C) 下载英文版本 (Rev.C) PDF | HTML 21 Oct 2021
选择指南 Logic Guide (Rev. AB) 12 Jun 2017
应用手册 Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
选择指南 逻辑器件指南 2014 (Rev. AA) 下载最新的英文版本 (Rev.AB) 17 Nov 2014
用户指南 LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
更多文献资料 Digital Bus Switch Selection Guide (Rev. A) 10 Nov 2004
应用手册 Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
用户指南 Signal Switch Data Book (Rev. A) 14 Nov 2003
更多文献资料 Logic Cross-Reference (Rev. A) 07 Oct 2003
应用手册 Bus FET Switch Solutions for Live Insertion Applications 07 Feb 2003

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仿真模型

SN74CB3Q3251 IBIS Model

SCDM077.ZIP (42 KB) - IBIS Model
封装 引脚数 下载
SSOP (DBQ) 16 了解详情
TSSOP (PW) 16 了解详情
TVSOP (DGV) 16 了解详情
VQFN (RGY) 16 了解详情

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