ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in

the operation sections to the specifications below is not implied. Exposure to absolute maximum rating conditions for

extended periods of time may affect reliability and cause permanent damage to the device.

-0.3V to +6.0V

Receiver Input Voltage (from Ground)

±18V

Driver Output Voltage (from Ground)

±18V

Short Circuit Duration, TX out to Ground

Continuous

Voltage at TTL Input Pins

Storage Temperature Range

-65°C to +150°C

Lead Temperature (soldering, 10s)

+300°C

Power Dissipation 40-pin QFN

(derate 17mW/°C above +70°C)

500mW

SP339B

2

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION

REV. 1.0.0

CAUTION:

ESD (ElectroStatic Discharge) sensitive device. Permanent damage may occur on unconnected devices subject to high

energy electrostatic fields. Unused devices must be stored in conductive foam or shunts. Personnel should be properly

grounded prior to handling this device. The protective foam should be discharged to the destination socket before devices

are removed.

ESD PROTECTION

R1-R9

Tx Output & Rx Input Pins

±15

kV

Human Body Model (HBM)

±8

kV

IEC 61000-4-2 (Contact)

±15

kV

IEC 61000-4-2 (Air Gap)

All Other Pins

±4

kV

Human Body Model (HBM)