SN74CB3T16212
- Member of the Texas Instruments Widebus™ Family
- Output Voltage Translation Tracks VCC
- Supports Mixed-Mode Signal Operation on All Data I/O Ports
- 5-V Input Down to 3.3-V Output Level Shift With 3.3-V VCC
- 5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V VCC
- 5-V-Tolerant I/Os With Device Powered Up or Powered Down
- Bidirectional Data Flow, With Near-Zero Propagation Delay
- Low ON-State Resistance (ron) Characteristics (ron = 5
Typ) - Low Input/Output Capacitance Minimizes Loading (Cio(OFF) = 9 pF Typ)
- Data and Control Inputs Provide Undershoot Clamp Diodes
- Low Power Consumption (ICC = 70 µA Max)
- 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 250 mA Per JESD 17
- ESD Performance Tested Per JESD 22
- 2000-V Human-Body Model (A114-B, Class II)
- 1000-V Charged-Device Model (C101)
- Supports Digital Applications: Level Translation, PCI Interface, USB Interface, Memory Interleaving, and Bus Isolation
- Ideal for Low-Power Portable Equipment
Widebus is a trademark of Texas Instruments.
The SN74CB3T16212 is a high-speed TTL-compatible FET bus-exchange switch, with low ON-state resistance (ron), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks VCC. The SN74CB3T16212 supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1).
The SN74CB3T16212 operates as a 24-bit bus switch or as a 12-bit bus exchange that provides data exchanging between four signal ports. The select (S0, S1, S2) inputs control the data path of the bus-exchange switch. When the bus-exchange switch is ON, the A port is connected to the B port, allowing bidirectional data flow between ports. When the bus-exchange switch is OFF, 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. The device has isolation during power off.
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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | SN74CB3T16212 数据表 (Rev. A) | 2005-1-28 | |||
| 应用手册 | 选择正确的德州仪器 (TI) 信号开关 (Rev. E) | PDF | HTML | 英语版 (Rev.E) | PDF | HTML | 2022-8-5 | |
| 应用手册 | 多路复用器和信号开关词汇表 (Rev. B) | 英语版 (Rev.B) | PDF | HTML | 2022-3-11 | ||
| 应用简报 | 利用关断保护信号开关消除电源时序 (Rev. C) | 英语版 (Rev.C) | PDF | HTML | 2021-10-21 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (DGG) | 56 | Ultra Librarian |
订购和质量
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