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参数资料
| 型号： | MAX3190EUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/8页 |
| 文件大小： | 0K |
| 描述： | IC RS-232 TRANSMITTER SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 发射器 |
| 驱动器/接收器数： | 1/0 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
shows the current waveform for the ±8kV IEC 1000-4-2
Level 4 ESD Contact Discharge test. The Air-Gap test
involves approaching the device with a charged probe.
The Contact Discharge method connects the probe to
the device before the probe is energized.
Power-Supply Decoupling
In most circumstances, 0.1F bypass capacitors are
adequate for power-supply decoupling. Connect the
bypass capacitors as close to the IC as possible.
Applications Information
Power-Supply Sources
The MAX3190/MAX3190E require ±7.5V to ±12V dual
supplies. For applications where these supply voltages
are not present, a DC-DC converter must be added.
Due to the MAX3190/MAX3190E’s low current con-
sumption, a charge pump can provide the proper supply
voltages and requires a minimal amount of board
space and cost.
When using another RS-232 device containing an internal
unregulated charge pump (Tables 1 and 2), the
MAX3190/MAX3190E may be powered from the internal
charge pump (Figure 6). This eliminates the need for
additional external DC-DC converters to generate the
required ±7.5V to ±12V dual supplies. The MAX3190/
MAX3190E are specifically designed to be used with
Maxim’s RS-232 products listed in Tables 1 and 2.
Competitive RS-232 devices’ charge pumps typically
do not have the capability to power these devices.
The MAX3190/MAX3190E can be operated from ±6V to
±7.5V supplies. In this condition, the devices are guar-
anteed to be RS-232-compatible (TOUT
≥ +3.7V).
For applications that have ±4.5V to ±6V supplies avail-
able, please refer to the MAX3188/MAX3189 or
MAX3188E/MAX3189E data sheet.
MAX3190/MAX3190E
±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6
_______________________________________________________________________________________
5
IP 100%
90%
36.8%
tRI
TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
AMPERES
Figure 3. Human Body Model Current Waveform
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
RC
50M
TO 100M
RD
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 4. IEC 1000-4-2 ESD Test Model
tR = 0.7ns TO 1ns
30ns
60ns
t
100%
90%
10%
I PEAK
I
Figure 5. IEC 1000-4-2 Generator Current Waveform
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