3-V TO 5.5-V DUAL RS-232 PORT
ą
SN65C23243, SN75C23243
3ĆV TO 5.5ĆV DUAL RSĆ232 PORT
ą
SLLS513A − AUGUST 2001 − REVISED MARCH 2004
D Single-Chip ...
Description
ą
SN65C23243, SN75C23243
3ĆV TO 5.5ĆV DUAL RSĆ232 PORT
ą
SLLS513A − AUGUST 2001 − REVISED MARCH 2004
D Single-Chip and Single-Supply Interface for
Two IBM PC/AT Serial Ports
DGG OR DL PACKAGE (TOP VIEW)
D Meet or Exceed the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
D Operate With 3-V to 5.5-V VCC Supply D Always-Active Noninverting Receiver
Output (ROUT2) Per Port
RIN5A 1 RIN4A 2 RIN3A 3 RIN2A 4 RIN1A 5
48 ROUT5A 47 ROUT4A 46 ROUT3A 45 ROUT2A 44 ROUT1A
D Operate Up To 250 kbit/s
INVA 6
43 ROUT2A
D Low Standby Current . . . 1 µA Typical D External Capacitors . . . 4 × 0.22 µF D Accept 5-V Logic Input With 3.3-V Supply D Allow for Flexible Power Down of Either
DOUT3A 7 DOUT2A 8 DOUT1A 9 FORCEOFFA 10
C2− 11
42 DIN3A 41 DIN2A 40 DIN1A 39 FORCEON 38 V−
Serial Port
C2+ 12 37 V+
D Serial-Mouse Driveability
GND 13 36 C1+
D RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM)
D Applications
− Battery-Powered Systems, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment
VCC 14 FORCEOFFB 15
DOUT1B 16 DOUT2B 17 DOUT3B 18
INVB 19 RIN1B 20
35 C1− 34 GND 33 DIN1B 32 DIN2B 31 DIN3B 30 ROUT2B 29 ROUT1B
description/ordering information
RIN2B 21 RIN3B 22
28 ROUT2B 27 ROUT3B
The SN65C23243 and SN75C23243 consist of
RIN4B 23 26 ROUT4B
two ports, each containing three line drivers and
RIN5B 24 25 ROUT5B
five line receivers, and a dual charge-pump circuit
with ±15-kV ESD protection pin to pin (serial-port
connection pins, includin...
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