SP211EHE Datasheet, PDF (12/19 Pages) Exar Corporation – Low Power, High ESD 5V RS-232 Transceivers

The larger storage capacitor injects a
higher voltage to the test point when SW2
is switched on. The lower current limiting
resistor increases the current charge onto
the test point.
The RS-232 is a relatively slow data exchange
protocol, with a maximum baud rate of only
20kbps, which can be transmitted over a
maximum copper wire cable length of 50 feet.
The SP207E through SP213E Series of data
communications interface products have
been designed to meet both the EIA protocol
standards, and the needs of the industry.
EIA STANDARDS
The Electronic Industry Association (EIA)
developed several standards of data
transmission which are revised and up-
dated in order to meet the requirements
of the industry. In data processing, there
are two basic means of communicating
between systems and components. The
RS--232 standard was first introduced in
1962 and, since that time, has become an
industry standard.
Device pin
TESTED
Human Body
IEC61000-4-2
MODEL
Air Discharge Direct Contact
Driver Outputs +15kV
Receiver Inputs
+15kV
+15kV
+15kV
+8kV
+8kV
Table 3. Transceiver ESD Tolerance Levels
Level
4
4
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP207E_101_101512