SP303 Datasheet, PDF (1/8 Pages) Sipex Corporation – RS232/AppleTalk TM Serial Transceiver

Corporation
SIGNAL PROCESSING EXCELLENCE
SP303
RS232/AppleTalk™ Serial Transceiver
s Single chip serial transceiver supports
AppleTalk^TM or RS-232 interface
s Programmable Selection of Interface
s 4 RS-232 Drivers and 4 RS-232
Receivers
s Provides Macintosh^TM type interface
s ±30V Receiver Input Levels
s Surface Mount Packaging
DESCRIPTION…
The SP303 is a single chip device that offers both RS-232 and AppleTalk™ interfaces. When
configured for RS-232 mode the SP303 has 4 drivers and 4 receivers. When the part is
programmed for AppleTalk mode, the SP303 supports Macintosh–type ports. All drivers and
receivers can operate at data rates up to 1 Mbps. The differential driver used for transmitting data
signals is equipped with a tri-state function. The SP303 is available in a 28–pin SOIC package
for operation over the commercial temperature range.
+5V INPUT
+12V INPUT
–12V INPUT
T_OUTB1 T_OUTB2 T_OUTA1 T_OUTA2
R_INA1 R_INA2
VCC
VDD
VEE
SELECT
AB
T₁
T₂
T₃
T₄
R₁
R₂
SP303
R_INB1 R_INB2
GND
R₃
R₄
T_INB1 T_INB2 T_INA1 T_INA2 T_XEN R_OUTA1 R_OUTA2 R_OUTB1 R_OUTB2
Corporation
SIGNAL PROCESSING EXCELLENCE
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