SP208ET/TR Exar, SP208ET/TR Datasheet - Page 7

• Manufacturer Part Number: SP208ET/TR
• Description: RS-232 Interface IC RS232 Transceiver 5V 4-driver/4-receiver
• Manufacturer: Exar

Specifications of SP208ET/TR

• Product Category: RS-232 Interface IC
• Rohs: yes
• Mounting Style: SMD/SMT
• Package / Case: SOIC-24

Figure 4, Charge pump - Phase 3
Figure 5, Charge pump - Phase 4
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
962 and, since that time, has become an
industry standard.
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 SP2 series of data com-
munications interface products have been de-
signed to meet both the EIA protocol standards
, and the needs of the industry.
Figure 3, Charge pump - Phase 2
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP206, 207, 208, 2_0_060
C
C
C
1
1
1
–5V
+
–
+
–
+
–
V
V
V
CC
CC
CC
= +5V
= +5V
= +5V
C
C
C
2
2
2
–10V
+10V
+5V
–5V
+
–
+
+
–
–
7
+/-10kV ESD PROTECTION
The SP206/207/208/2 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 305.7 Human Body Model. Each
device in the family can withstand up to +/-
0kV of static discharge on all RS-232 inputs
and outputs. All other pins of each device will
maintain ≥ +/-2kV of ESD protection.
+
–
+
+
–
–
C
C
C
C
C
C
4
4
4
3
3
+
3
+
–
+
–
–
V
V
V
V
V
V
DD
SS
DD
SS
DD
SS
Storage Capacitor
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Storage Capacitor
Storage Capacitor
Storage Capacitor
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