Datasheet
General Description
The MAX3188E/MAX3189E 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 150µA of
supply current from ±4.5V to ±6V supplies. They fea-
ture a shutdown input that reduces current consump-
tion to only 1µA and forces the transmitter output into a
high-impedance state. RS-232 data transmission is guar-
anteed up to 250kbps with the MAX3188E and up to
1Mbps with the MAX3189E.
The MAX3188E/MAX3189E are EIA/TIA-232 transmitters
that convert CMOS/TTL logic levels to RS-232-compliant
signals. The transmitter output is protected to ±15kV
using the IEC 1000-4-2 Air-Gap Discharge method, to
±8kV using the IEC 1000-4-2 Contact Discharge
method, and to ±15kV per the Human Body Model,
ensuring strict compliance with international standards.
The MAX3188E/MAX3189E transmitters have a standard
inverting output.
Applications
Diagnostic Ports
Telecommunications
Networking Equipment
Set-Top Boxes
Digital Cameras
Hand-Held Equipment
Features
♦ Small 6-Pin SOT23 Package
♦ ESD-Protected RS-232 Output
±15kV per Human Body Model
±8kV per IEC 1000-4-2, Contact Discharge
±15kV per IEC 1000-4-2, Air-Gap Discharge
♦ 150µA Operating Supply Current
♦ Shutdown Reduces Supply Current to 1µA
♦ Guaranteed Data Rate
1Mbps (MAX3189E)
250kbps (MAX3188E)
♦ Three-State RS-232 Transmitter Output
♦ No External Components
MAX3188E/MAX3189E
±15kV ESD-Protected, 1Mbps, 1µA
RS-232 Transmitters in SOT23-6
________________________________________________________________ Maxim Integrated Products 1
GND
TOUTTIN
16V
CC
5 V
EE
SHDN
MAX3188E
MAX3189E
SOT23-6
TOP VIEW
2
34
SHDN
V
CC
V
EE
TIN
GND
TOUT
MAX3188E
MAX3189E
1
6
3
2
4
5
C
BYPASS1
0.1µF
C
BYPASS2
0.1µF
-5.4V+5.4V
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED.
Typical Operating Circuit
19-1604; Rev 1; 3/00
Pin Configuration
Ordering Information
AAHE
AAHD
TOP
MARK
6 SOT23-6
6 SOT23-6
PIN-
PACKAGE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
MAX3189EEUT-T
MAX3188EEUT-T
PART
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.