CXAS42254集成了高带宽模拟开关、电平移位缓冲器和电平转换FET开关。该设备实现了一个完整的2:2双图形交叉解决方案的VGA信号交换。CXAS42254为RGB信号提供12个超高频700MHz SPST开关，为显示数据通道（DDC）信号提供4个低频钳位开关，为HSYNC和VSYNC信号提供2对电平移位缓冲器，还提供集成扩展ESD保护。CXAS42254用于从两个源中选择一个源到笔记本电脑中的两个目标。水平和垂直同步（SH_u/SV_u）输入具有电平移位缓冲器，以支持低电压控制器和标准5V TTL电平监视器。DDC由SDA_u和SCL_u组成，是一种FET开关，在降低电容性负载的同时，保护低电压VGA源免受来自显示器上的高电压的潜在损害。CXAS42254的所有14个输出端子对±15kV人体模型（HBM）和±6kV IEC 61000-4-2触点具有高ESD保护。所有其他引脚均保护至±2kV HBM。CXAS42254在TQFN5X5-40包装中提供，带有外露的衬垫。
·低通电阻5Ω（典型），RGB信号
·低供电电流<5μA（最大值）
·高带宽，700MHz（典型），RGB
·DDC水平移动、带内部拉起终端的隔离和保护
·水平和垂直同步水平移动和缓冲
输入与VL兼容，输出与TTL兼容
每个SH、SV输出上的源/汇±10mA
独立的可选择逻辑输入，用于切换
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[ CXAS42254 ]
目录
7.相关产品
产品概述 返回TOP
The CXAS42254 integrates high-bandwidth analog switches, level-shifting buffers and level-translating FET switches. The device implements a complete 2:2 dual-graphics crossover solution for VGA signal switching. The CXAS42254 provides 12 very high-frequency 700MHz SPST switches for RGB signals, 4 low- frequency clamping switches for the Display Data Channel(DDC) signals, 2 pairs of level-shifting buffers for the HSYNC and VSYNC signals, and also integrated extended ESD protection. The CXAS42254 is used to select one of two sources to either of two destinations within a laptop computer. Horizontal and vertical synchronization (SH_/SV_) inputs feature level-shifting buffers to support lowvoltage controllers and standard 5V TTL-level monitors. DDC, consisting of SDA_ and SCL_, are FET switches that protect the low-voltage VGA source from potential damage from high-voltage presence on the monitor while reducing capacitive load. All 14 output terminals of the CXAS42254feature high-ESD protection to ±15kV Human Body Model (HBM) and ±6kV IEC 61000-4-2 Contact. All other pins are protected to ±2kV HBM. The CXAS42254 is available in the TQFN5X5-40 package with exposed pad.
产品特点 返回TOP
„ Low ON-Resistance 5Ω (Typical), RGB Signal
„ Low supply Current<5μA (Max)
„ High Bandwidth, 700MHz (Typical), RGB
„ DDC Level Shifting, Isolation with Internal Pullup Termination, and Protection
„ Horizontal and Vertical Sync Level Shifting and Buffering
„ Inputs Compatible with VL, Outputs TTL Compatible
„ Source/Sink ±10mA on Each SH_, SV_ Output
„ Independent Selectable Logic Inputs For Switching
„ High ESD Protection on Outputs: ±15kV HBM ESD ±6kV IEC 61000-4-2 Contact Discharge
„ TQFN 5x5 40 pins Package with Exposed Pad
应用范围 返回TOP
„ Notebook Computer-Switchable Graphics
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
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|
Analog Switch |
|||||||||
|
Part NO. |
Vin (V) min. |
Vin (V) max. |
RON (Ohm) |
BW (MHz) |
TON (ns) |
TOFF (ns) |
ISUPPLY (uA) |
Note |
Package |
|
2.25 |
5.5 |
0.75 |
43 |
21.6 |
18 |
0.1 |
Single SPDT |
WLCSP2X4-8 |
|
|
2.25 |
5.5 |
0.75 |
43 |
19 |
16 |
0.2 |
Dual SPDT |
WLCSP3X4-12 |
|
|
1.65 |
5.5 |
1 |
100 |
19 |
17 |
0.05 |
Single SPDT |
SC-70-6/WLCSP2X3-6 |
|
|
1.65 |
5.5 |
3.5 |
250 |
6 |
8 |
1 |
Single SPDT |
SC-70-6 |
|
|
2.3 |
5.5 |
10 |
-- |
5 |
4.5 |
1 |
Quad SPDT |
TSSOP-16/SSOP-16 |
|
|
2.7 |
5.5 |
1 |
20 |
26 |
14 |
1 |
Dual SPDT |
MSOP-10 |
|
|
2.3 |
5 |
6 |
1200 |
22 |
8.8 |
1 |
High-Speed 1:2 Switch |
TDFN3X3-10 |
|
|
4.5 |
5.5 |
5 |
700 |
2 |
2 |
0.2 |
VGA RGB 2:2 Dual-Graphics |
TQFN5X5-10 |
|
|
1.65 |
5.5 |
-- |
-- |
2 |
2 |
10 |
Single Inverter |
WLCSP2X2-4 |
|
|
1.65 |
5.5 |
-- |
-- |
3.4 |
3.4 |
10 |
Single 2-Input OR Gate |
WLCSP2X3-5 |
|
