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參數(shù)資料
| 型號： | MAX3440EESA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 【15kV ESD-Protected, 【60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封裝： | 0.150 INCH, MS-012A, SOIC-8 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 368K |
| 代理商： | MAX3440EESA |
±15kV ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against ESD
encountered during handling and assembly. The
MAX3440E
–
MAX3444E receiver inputs/driver outputs
(A, B) have extra protection against static electricity
found in normal operation. Maxim
’
s engineers have
developed state-of-the-art structures to protect these
pins against ±15kV ESD without damage. After an ESD
event, the MAX3440E
–
MAX3444E continue working
without latchup.
ESD protection can be tested in several ways. The
receiver inputs are characterized for protection to
±15kV using the Human Body Model.
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 9a shows the Human Body Model, and Figure
9b shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the device through a
1.5k
resistor.
Driver Output Protection
Two mechanisms prevent excessive output current and
power dissipation caused by faults or bus contention.
The first, a foldback current limit on the driver output
stage, provides immediate protection against short cir-
cuits over the whole common-mode voltage range. The
second, a thermal shutdown circuit, forces the driver out-
puts into a high-impedance state if the die temperature
exceeds +160
°
C. Normal operation resumes when the
die temperature cools to +140
°
C, resulting in a pulsed
output during continuous short-circuit conditions.
M
±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
______________________________________________________________________________________
13
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
R
C
1M
W
R
D
1.5k
W
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 9a. Human Body ESD Test Model
I
P
100%
90%
36.8%
t
RL
TIME
t
DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPERES
Figure 9b. Human Body Model Current Waveform
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3440E-MAX3444E | 【15kV ESD-Protected, 【60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers |
| MAX3440E | Single Full-Duplex LVDS Transceiver 8-SOIC -40 to 85 |
| MAX3441E | Single Full-Duplex LVDS Transceiver 8-MSOP -40 to 85 |
| MAX3441EESA | Single Full-Duplex LVDS Transceiver 8-MSOP -40 to 85 |
| MAX3442E | Single Full-Duplex LVDS Transceiver 8-MSOP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3440EESA+ | 功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX3440EESA+T | 功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX3440EESA-T | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX3440ESA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX34411ETG+ | 制造商:Maxim Integrated Products 功能描述:QUAD CURRENT SENSE MONITOR 24L - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC CURRENT MONITOR QUAD 24TQFN |
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