SP211EEA-L-TR Datasheet, PDF (7/15 Pages) Exar Corporation – 5V RS-232 Serial Transceivers

V_CC = +5V
+
C_{1 –}
+
C_{2 –}
–10V
Figure 3, Charge pump - Phase 2
V_CC = +5V
+
C_{1 –}
–5V
+5V
+
C_{2 –}
–5V
Figure 4, Charge pump - Phase 3
V_CC = +5V
+
C_{1 –}
+10V
+
C_{2 –}
Figure 5, Charge pump - Phase 4
C₄
+ – _{VDD Storage Capacitor}
– + _{VSS Storage Capacitor}
C₃
C₄
+ – _{VDD Storage Capacitor}
–+
C₃
V_SS Storage Capacitor
C₄
+ – _{VDD Storage Capacitor}
–+
C₃
V_SS Storage Capacitor
EIA STANDARDS
The Electronic Industry Association (EIA)
developed several standards of data transmis-
sion which are revised and updated in order to
meet the requirements of the industry. In data
processing, there are two basic means of com-
municating between systems and components.
The RS-232 standard was first introduced in
1962 and, since that time, has become an
industry standard.
+/-10kV ESD PROTECTION
The SP206/207/208/211 are equipped with
Exar proprietary ESD protection circuitry on
all RS-232 inputs and outputs. This series
has been characterized using MIL-STD-883C
Method 3015.7 Human Body Model. Each
device in the family can withstand up to +/-
10kV of static discharge on all RS-232 inputs
and outputs. All other pins of each device will
maintain ≥ +/-2kV of ESD protection.
The RS-232 is a relatively slow data exchange
protocol, with a maximum baud rate of only
20kbaud, which can be transmitted over a
maximum copper wire cable length of 50 feet.
The SP206 through SP211 series of data com-
munications interface products have been de-
signed to meet both the EIA protocol standards
, and the needs of the industry.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • Fax [phone] • www.exar.com SP206, 207, 208, 211_101_060111