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參數(shù)資料
| 型號： | ISL8484IUZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Ultra Low ON-Resistance, +1.65V to +4.5V, Single Supply, Dual SPDT Analog Switch |
| 中文描述： | DUAL 1-CHANNEL, SGL POLE DOUBLE THROW SWITCH, PDSO10 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MO-187BA, MSOP-10 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大小： | 460K |
| 代理商： | ISL8484IUZ-T |
7
FN6128.0
February 25, 2005
Detailed Description
The ISL8484 is a bidirectional, dual single pole/double throw
(SPDT) analog switch that offers precise switching capability
from a single 1.65V to 4.5V supply with low on-resistance
(0.23
) and high speed operation (t
ON
= 20ns, t
OFF
= 15ns).
The device is especially well suited for portable battery
powered equipment due to its low operating supply voltage
(1.65V), low power consumption (4.5
μ
W max), low leakage
currents (110nA max), and the tiny DFN and MSOP
packages. The ultra low on-resistance and Ron flatness
provide very low insertion loss and distortion to applications
that require signal reproduction.
Supply Sequencing and Overvoltage Protection
With any CMOS device, proper power supply sequencing is
required to protect the device from excessive input currents
which might permanently damage the IC. All I/O pins contain
ESD protection diodes from the pin to V+ and to GND (see
Figure 8). To prevent forward biasing these diodes, V+ must
be applied before any input signals, and the input signal
voltages must remain between V+ and GND. If these
conditions cannot be guaranteed, then one of the following
two protection methods should be employed.
Logic inputs can easily be protected by adding a 1k
resistor in series with the input (see Figure 8). The resistor
limits the input current below the threshold that produces
permanent damage, and the sub-microamp input current
produces an insignificant voltage drop during normal
operation.
This method is not acceptable for the signal path inputs.
Adding a series resistor to the switch input defeats the
purpose of using a low R
ON
switch, so two small signal
diodes can be added in series with the supply pins to provide
FIGURE 4. OFF ISOLATION TEST CIRCUIT
FIGURE 5. R
ON
TEST CIRCUIT
FIGURE 6. CROSSTALK TEST CIRCUIT
FIGURE 7. CAPACITANCE TEST CIRCUIT
Test Circuits and Waveforms
(Continued)
ANALYZER
R
L
SIGNAL
GENERATOR
V+
C
0V or V+
NO or NC
COM
IN
GND
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
V+
C
0V or V+
NO or NC
COM
IN
GND
V
NX
V
1
R
ON
= V
1
/100mA
100mA
Repeat test for all switches.
0V or V+
ANALYZER
V+
C
NO or NC
SIGNAL
GENERATOR
R
L
GND
IN
1
COM
50
N.C.
COM
NC or NO
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
V+
C
GND
NO or NC
COM
IN
IMPEDANCE
ANALYZER
0V or V+
Repeat test for all switches.
ISL8484
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| ISL8484IRZ | Octal D-Type Transparent Latches With 3-State Outputs 20-SO -40 to 85 |
| ISL8484IRZ-T | Octal D-Type Transparent Latches With 3-State Outputs 20-SO -40 to 85 |
| ISL8484IU | Octal D-Type Transparent Latches With 3-State Outputs 20-SO -40 to 85 |
| ISL8484IU-T | Ultra Low ON-Resistance, +1.65V to +4.5V, Single Supply, Dual SPDT Analog Switch |
| ISL8484 | Ultra Low ON-Resistance, +1.65V to +4.5V, Single Supply, Dual SPDT Analog Switch(超低導(dǎo)通電阻，+1.65V至+4.5V, 單電源, 雙路單刀雙擲模擬開關(guān)) |
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| ISL8485CBZ | 功能描述:IC TXRX RS485/422 5V ESD 8-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:發(fā)射器 驅(qū)動器/接收器數(shù):4/0 規(guī)程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
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