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PDF MAX3190 Data sheet ( Hoja de datos )
| Número de pieza | MAX3190 | |
| Descripción | 15kV ESD-Protected / 460kbps / RS-232 Transmitters in SOT23-6 | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX3190 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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19-1931; Rev 1; 3/03
±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6
General Description
The MAX3190/MAX3190E single RS-232 transmitters in
a SOT23-6 package are for space- and cost-con-
strained applications requiring minimal RS-232 commu-
nications. These devices consume only 200µA of
supply current from ±7.5V to ±12V supplies. The
MAX3190/MAX3190E transmitter outputs are RS-232
compatible when powered from ±6V to ±7.5V supplies.
They feature a shutdown input that reduces current
consumption to only 1µA and forces the transmitter out-
put into a high-impedance state. RS-232-compliant data
transmission is guaranteed up to 460kbps.
The MAX3190/MAX3190E are EIA/TIA-232 transmitters
that convert CMOS/TTL logic levels to RS-232-compliant
signals. The MAX3190E transmitter output is protected
to ±15kV per the Human Body Model, ±8kV per IEC
1000-4-2 Contact Discharge, and ±15kV per IEC 1000-
4-2 Air-Gap Discharge, providing protection against
harsh environments. The MAX3190/ MAX3190E trans-
mitters have a standard inverting output.
Features
o Small 6-Pin SOT23 Package
o ESD-Protected RS-232 Output (MAX3190E)
±15kV per Human Body Model
±8kV per IEC 1000-4-2 Contact Discharge
±15kV per IEC 1000-4-2 Air-Gap Discharge
o 200µA Operating Supply Current
o Shutdown Reduces Supply Current to 0.4µA
o RS-232-Compliant Operation from ±7.5V to ±12V
Supplies
o RS-232-Compatible Operations from ±6V to ±7.5V
Supplies
o 460kbps Guaranteed Data Rate
o Three-State RS-232 Transmitter Output
o No External Components
Set-Top Boxes
Telecommunications
Diagnostic Ports
Networking Equipment
Digital Cameras
Hand-Held Equipment
Applications
PART
MAX3190EUT-T
MAX3190EEUT-T
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
TOP
MARK
AAIA
ABQS
Typical Operating Circuit
+5V
+10V
CBYPASS1
0.1µF
1 SHDN
6 VCC
VEE 5
MAX3190
MAX3190E
3 TIN
TOUT 4
GND
2
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED.
-10V
CBYPASS2
0.1µF
Pin Configuration
TOP VIEW
SHDN 1
6 VCC
MAX3190
GND 2 MAX3190E 5 VEE
TIN 3
4 TOUT
SOT23-6
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6
IP 100%
90%
Ir PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
AMPERES
36.8%
10%
0
0
tRI
TIME
tDL
CURRENT WAVEFORM
Figure 3. Human Body Model Current Waveform
RC
50MΩ TO 100MΩ
CHARGE-CURRENT
LIMIT RESISTOR
RD
330Ω
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
150pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
Figure 4. IEC 1000-4-2 ESD Test Model
I
100%
90%
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, 0.1µF 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.
10%
tR = 0.7ns TO 1ns
30ns
60ns
Figure 5. IEC 1000-4-2 Generator Current Waveform
t
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MAX3190.PDF ] | |
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