參數(shù)資料
型號(hào): MAX14979EETX+GH7
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 8/10頁(yè)
文件大?。?/td> 0K
描述: IC SWITCH LVDS HIGH BW 36TQFN
標(biāo)準(zhǔn)包裝: 50
功能: 開(kāi)關(guān)
電路: 4 x DPDT
導(dǎo)通狀態(tài)電阻: 5.5 歐姆
電壓電源: 單電源
電壓 - 電源,單路/雙路(±): 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 36-TQFN 裸露焊盤(pán)(6x6)
包裝: 托盤(pán)
MAX14979E
High-Bandwidth, ±15kV ESD Protection
LVDS Switch
7
Detailed Description
The MAX14979E is a high-speed analog switch targeted
at LVDS and other low-voltage switching up to 600MHz.
In a typical application, the MAX14979E switches two
sets of LVDS sources to a laptop LVDS panel. For extra
security, the MAX14979E is protected against Q15kV
ESD shocks. See the Functional Diagram.
With its low resistance and capacitance, as well as high-
ESD protection, the MAX14979E can be used to switch
most low-voltage differential signals, such as LVDS and
LVPECL, as long as the signals do not exceed the maxi-
mum ratings of the device.
The MAX14979E switches provide low capacitance and
on-resistance to meet low insertion loss and return-loss
specifications. The MAX14979E has three additional
AUX switches.
Digital Control Inputs
The MAX14979E provides a single digital control SEL.
SEL controls the switches as well as the AUX switches,
as shown in Table 1.
Analog-Signal Levels
The on-resistance of the MAX14979E is very low and
stable as the analog input signals are swept from ground
to V+ (see the Typical Operating Characteristics). The
switches are bidirectional, allowing COM_ _ and NC_ _/
NO_ _ to be configured as either inputs or outputs.
ESD Protection
The MAX14979E is characterized using the HBM for
Q
15kV of ESD protection. Figure 5 shows the HBM. This
model consists of a 100pF capacitor charged to the ESD
voltage of interest, which is then discharged into the test
device through a 1.5kI resistor. All signal and control
pins are ESD protected to Q15kV HBM.
Pin Description (continued)
Figure 5. Human Body ESD Test Model (MIL-STD-883, Method
3015)
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC
1M
RD
1500
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
PIN
NAME
FUNCTION
22
NC2+
Normally Closed LVDS Differential Terminal for Switch 2
23
NO1-
Normally Open LVDS Differential Terminal for Switch 1
24
NO1+
Normally Open LVDS Differential Terminal for Switch 1
25
NC1-
Normally Closed LVDS Differential Terminal for Switch 1
26
NC1+
Normally Closed LVDS Differential Terminal for Switch 1
27
SEL
Select Input. SEL selects switch connection. See Table1.
28
NO0-
Normally Open LVDS Differential Terminal for Switch 0
29
NO0+
Normally Open LVDS Differential Terminal for Switch 0
30
NC0-
Normally Closed LVDS Differential Terminal for Switch 0
31
NC0+
Normally Closed LVDS Differential Terminal for Switch 0
32
AUX2
AUX2 Output. Drive SEL high (SEL = 1) to connect AUX0 to AUX2.
33
AUX1
AUX1 Output. Drive SEL low (SEL = 0) to connect AUX0 to AUX1.
34
AUX0
AUX0 Input
35
V+
Positive-Supply Voltage Input. Bypass V+ to GND with a 0.1FF ceramic capacitor.
36
COM0+
Common LVDS Differential Terminal for Switch 0
EP
Exposed Pad. Connect exposed pad to GND or leave it unconnected.
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