SN74CB3Q3306A-EP
- High-Bandwidth Data Path (up to 500 MHz(1))
- 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 Ω Typ) - Rail-to-Rail Switching on Data I/O Ports
- 0- to 5-V Switching With 3.3-V VCC
- 0- to 3.3-V Switching With 2.5-V VCC
- Bidirectional Data Flow With Near-Zero Propagation Delay
- Low Input/Output Capacitance Minimizes
Loading and Signal Distortion
(Cio(OFF) = 3.5 pF Typ) - Fast Switching Frequency (f OE = 20 MHz Max)
- Data and Control Inputs Provide Undershoot Clamp Diodes
- Low Power Consumption (ICC = 0.25 mA Typ)
- VCC Operating Range From 2.3 V to 3.6 V
- Data I/Os Support 0- 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) - Control Inputs Can Be Driven by TTL or
5-V/3.3-V CMOS Outputs - Ioff Supports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 100 mA
Per JESD 78, Class II - ESD Performance Tested Per JESD 22
- 2000-V Human-Body Model (A114-B, Class II)
- 1000-V Charged-Device Model (C101)
- Supports Both Digital and Analog Applications: USB Interface,
Differential Signal Interface, Bus Isolation, Low-Distortion
Signal Gating
SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
- Controlled Baseline
- One Assembly and Test Site
- One Fabrication Site
- Available in Military (–55°C to 125°C)
Temperature Range - Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
(1) 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.
The SN74CB3Q3306A 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 SN74CB3Q3306A provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.
The SN74CB3Q3306A is organized as two 1-bit switches with separate output-enable (1OE, 2OE) inputs. It can be used as two 1-bit bus switches or as one 2-bit bus switch. When OE is low, the associated 1-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 1-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.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DUAL FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH datasheet | 2013/12/17 | |||
| * | 輻射及可靠性報告 | CCB3Q3306AMPWREP Reliability Report | 2014/12/16 | |||
| * | VID | SN74CB3Q3306A-EP VID V6214606 | 2016/6/21 | |||
| 應用說明 | Selecting the Correct Texas Instruments Signal Switch (Rev. E) | PDF | HTML | 2022/6/2 | |||
| 應用說明 | Multiplexers and Signal Switches Glossary (Rev. B) | PDF | HTML | 2021/12/1 |
設計與開發
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