7

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-7000 • Fax (50)668-707 • www.exar.com SP206, 207, 208, 2_0_060

Figure 3, Charge pump - Phase 2

–10V

+

+

+

+

–

–

–

–

Figure 4, Charge pump - Phase 3

–5V

+5V

–5V

+

+

+

+

–

–

–

–

Figure 5, Charge pump - Phase 4

+10V

+

+

+

+

–

–

–

–

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.

+/-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.