CXAS4239是一种单宽带宽、快速单极双掷（SPDT）CMOS开关，在VCC=5.0V和宽电源范围从1.8V到5.5V，可作为模拟电源使用开关或作为低延迟总线开关。300MHz高带宽性能
支持高频应用。两种情况下的先断后合功能部分消除了切换期间的信号中断同时启用开关。
宽电源范围：1.8V至5.5V
高带宽：300MHz
高关隔离：1MHz时84dB，10MHz时51dB
导通电阻：5.0V时为2.7Ω（典型值）
快速切换时间ton=12.0ns；toff=5.0ns
TTL/CMOS兼容
合闸前断开
轨对轨信号范围
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[ CXAS4239 ]
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
The CXAS4239 is a Single Wide-Bandwidth, fast singlepole double-throw (SPDT) CMOS switch featuring an On-Resistance of 2.7 ohm at VCC=5.0V and wide power supply range from 1.8V to 5.5V. It can be used as an analog switch or as a low-delay bus switch. The 300MHz high bandwidth performance supports the high frequency application. Break-before-make function for both parts eliminates signal disruption during switching from preventing both switches being enabled simultaneously.
二.产品特点
Wide Power Supply Range: 1.8V to 5.5V
High Bandwidth: 300MHz
High Off-Isolation: 84dB at 1MHz 51dB at 10MHz
On-Resistance: 2.7Ω(typ) at 5.0V
Fast Switching Time ton = 12.0ns; toff = 5.0ns
TTL/CMOS Compatible
Break-Before-Make Switching
Rail-to-Rail Signal Range
Operation Temperature Range: -40℃ to 85℃
Lead (Pb) Free SC70-6 Package
三.应用范围
Wireless Handsets
MP3 Players
Portable Electronic Devices
Relay Replacement
PDAs
Audio & Video Signal Routing
PCMCIA Cards
Computer Peripherals
Modems
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南
| 模拟开关(Analog Switch) | |||||
| Part No. | Mode | Features | VDD | Package | Applications |
| CXAS4239 | SPDT | 2.7Ω 300MHz Low-Voltage Analog Switch | 1.8~5.5V | SC70-6 | Mobile Phone, PDA |
| CXAS4240C | Dual SPDT | 0.4Ω 27MHz Analog Switch | 1.65~5.5V | CSP10 | Mobile Phone, PDA |
| CXAS4241 | 4 SPDT | 0.4Ω 42MHz Analog Switch | 1.6~4.2V | TQFN16 | Mobile Phone, PDA |
| CXAS4242 | DPDT | High Speed USB 2.0(480Mbps) | 2.3~5 V | UTQFN10 | Mobile phone, DC and Notebook |
| CXAS4243 | DPDT | High Speed USB 2.0(480Mbps) | 2.3~5V | UTQFN10 MSOP10 | Mobile phone, DC and Notebook |
| CXAS4244 | 4 SPDT | 5.0Ω 500MHz Analog Switch | 4~5.5V | SOP16 SSOP16 | LCD TV, STB, DVD |
| CXAS4245 | 4 SPDT | Quad SPDT Analog Switch | 4~5.5V | SOP16 SSOP16 | LCD TV, STB, DVD |
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