SN74CB3Q3253
- High-bandwidth data path (up to 500MHz)
- 5V tolerant I/Os with device powered up or powered down
- Low and flat ON-state resistance (ron) characteristics over operating range (ron = 4Ω typical)
- Rail-to-rail switching on data
I/O ports
- 0 to 5V switching with 3.3V VCC
- 0 to 3.3V switching with 2.5V VCC
- Bidirectional data flow with near-zero propagation delay
- Low input and output capacitance minimizes loading and signal distortion (Cio(OFF) = 3.5pF typical)
- Fast switching frequency (fOE = 20MHz maximum)
- Data and control inputs provide undershoot clamp diodes
- Low power consumption (ICC = 0.6mA typical)
- VCC operating range from 2.3V to 3.6V
- Data I/Os support 0V to 5V signal levels (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V)
- Control inputs can be driven by TTL or 5V and 3.3V CMOS outputs
- Ioff supports partial-power-down mode operation
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD performance tested per JESD
22
- 2000V Human-Body Model (A114B, Class II)
- 1000V Charged-Device Model (C101)
- Supports both digital and analog applications: USB interface, differential signal interface bus isolation, low-distortion signal gating (for additional information regarding the performance characteristics of the CB3Q family, refer to the CBT-C, CB3T, and CB3Q signal-switch families application note).
The SN74CB3Q3253 device is a high-bandwidth FET bus switch using 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 and output (I/O) ports.
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| 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 | SN74CB3Q3253 Dual 1-of-4 FET Multiplexer – Demultiplexer 2.5V – 3.3V Low-Voltage High-Bandwidth Bus Switch datasheet (Rev. D) | PDF | HTML | 2026/8/21 | ||
| 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 | |||
| Application brief | Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) | PDF | HTML | 2021/1/6 |
設計與開發
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介面轉接器
LEADED-ADAPTER1 — 適用於快速測試 TI 的 5、8、10、16 及 24 針腳引線封裝的表面貼裝至 DIP 接頭適配器
EVM-LEADED1 板可用於快速測試和搭建 TI 常見的有引腳封裝 此電路板具備板上配置，可將 TI 的 D、DBQ、DCT、DCU、DDF、DGS、DGV 和 PW 表面黏著封裝轉換為 100mil DIP 排針。
使用指南:
PDF
介面轉接器
LEADLESS-ADAPTER1 — 用於測試 TI 的 6、8、10、12、14、16 和 20 針腳無引線封裝的表面貼裝至 DIP 接頭適配器
EVM-LEADLESS1 電路板允許快速測試和麵包板搭建 TI 常見的無引腳封裝。 此電路板具有封裝設計，可將 TI 的 DRC、DTP、DQE、RBW、RGY、RSE、RSV、RSW、RTE、RTJ、RUK、RUC、RUG、RUM、RUT 和 YZP 表面黏著封裝轉換為 100mil DIP 接頭。
使用指南:
PDF
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TVSOP (DGV) | 16 | Ultra Librarian |
| TSSOP (PW) | 16 | Ultra Librarian |
| VQFN (RGY) | 16 | Ultra Librarian |
| SSOP (DBQ) | 16 | Ultra Librarian |
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