19-1604; Rev 0; 1/00
1ꢀ5k EꢁDꢂ-rotected, 1Mbps, 1µA
Rꢁꢂ232 Transmitters in ꢁOT23ꢂ6
General Description
Features
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 ±±.5ꢀ to ±6ꢀ 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.
ꢀ Small 6-Pin SOT23 Package
ꢀ ESD-Protected RS-232 Output
±±1kꢀ per ꢁuman ꢂodꢃ ꢄodel
±ꢅkꢀ per ꢆEꢇ ±ꢈꢈꢈ-ꢉ-2ꢊ ꢇontact Diꢋcꢌarge
±±1kꢀ per ꢆEꢇ ±ꢈꢈꢈ-ꢉ-2ꢊ ꢍir-ꢎap Diꢋcꢌarge
ꢀ ±1ꢈµꢍ Operating Supplꢃ ꢇurrent
ꢀ Sꢌutdown Reduceꢋ Supplꢃ ꢇurrent to ±µꢍ
ꢀ ꢎuaranteed Data Rate
±ꢄbpꢋ (ꢄꢍX3±ꢅ9E)
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 ±15kꢀ
using the IEC 1000-±-2 Air-Gap Discharge method, to
± 8kꢀ using the IEC 1000-±-2 Contact Discharge
method, and to ±15kꢀ per the ꢁuman ꢂody Model,
ensuring strict compliance with international standards.
The MAX3188E/MAX3189E transmitters have a standard
inverting output.
21ꢈkbpꢋ (ꢄꢍX3±ꢅꢅE)
ꢀ Tꢌree-State RS-232 Tranꢋmitter Output
ꢀ No External ꢇomponentꢋ
Applications
Ordering Information
Diagnostic Ports
PꢆN-
TOP
PꢍRT
TEꢄP. RꢍNꢎE
PꢍꢇKꢍꢎE ꢄꢍRK
Telecommunications
Networking Equipment
Set-Top ꢂoxes
ꢄꢍX3±ꢅꢅEEUT-T
ꢄꢍX3±ꢅ9EEUT-T
-±0°C to +85°C 6 SOT23-6
-±0°C to +85°C 6 SOT23-6
AAꢁD
AAꢁE
Digital Cameras
ꢁand-ꢁeld Equipment
Typical Operating Circuit
-in Configuration
TOP VIEW
1
SHDN
SHDN
1
2
3
6
5
4
V
V
6
5
4
CC
+5.4V
-5.4V
V
V
EE
CC
C
C
BYPASS2
BYPASS1
MAX3188E
MAX3189E
0.1µF
0.1µF
GND
TIN
MAX3188E
MAX3189E
EE
TOUT
TIN
TOUT
3
SOT23-6
GND
2
CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED.
________________________________________________________________ Maxim Integrated Products
±
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