參數(shù)資料
型號: MAX3387E
廠商: Maxim Integrated Products, Inc.
英文描述: +3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins I1(+3.0V至+5.5V,10nA,帶 ±15kV ESD保護接口和邏輯引腳,250kbps RS-232 收發(fā)器(3收3發(fā)))
中文描述: 3V、±15kV ESD保護、AutoShutdown Plus RS-232收發(fā)器,用于PDA和蜂窩電話
文件頁數(shù): 10/14頁
文件大?。?/td> 237K
代理商: MAX3387E
M
3V, ±15kV ESD-Protected, AutoShutdown Plus
RS-232 Transceiver for PDAs and Cell Phones
10
______________________________________________________________________________________
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 5a shows the Human Body Model, and Figure
5b 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 interest,
which is then discharged into the test device through a
1.5k
resistor.
Table 1. Output Control Truth Table
OPERATION STATUS
FORCEON
FORCEOFF
VALID
RECEIVER
LEVEL
RECEIVER OR
TRANSMITTER
EDGE WITHIN
30
T_OUT
R_OUT
Shutdown
(Forced Off)
X
0
X
X
High-Z
Active
Normal Operation
(Forced On)
1
1
X
X
Active
Active
Normal Operation
(AutoShutdown Plus)
0
1
X
Yes
Active
Active
Shutdown
(AutoShutdown Plus)
0
1
X
No
High-Z
Active
Normal Operation
INVALID
1
Yes
X
Active
Active
Normal Operation
INVALID
1
X
Yes
Active
Active
Shutdown
INVALID
1
No
No
High-Z
Active
Normal Operation
(AutoShutdown)
INVALID
INVALID
Yes
X
Active
Active
Shutdown
(AutoShutdown)
INVALID
INVALID
No
X
High-Z
Active
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
R
C
1M
R
D
1500
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 5a. 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 5b. Human Body Current Waveform
X = Don’t care
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