SN65C23243_08 Datasheet, PDF (1/19 Pages) Texas Instruments – 3-V TO 5.5-V DUAL RS-232 PORT

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SN65C23243, SN75C23243
3ĆV TO 5.5ĆV DUAL RSĆ232 PORT
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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 V_CC 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
V_CC 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, including GND). These devices meet the requirements of TIA/EIA-232-F and provide the
electrical interface between an asynchronous communication controller and the serial-port connector. This
combination of drivers and receivers matches that needed for two typical serial ports used in an IBM PC/AT, or
compatible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V
supply. In addition, these devices include an always-active noninverting output (ROUT2) per port, which allows
applications using the ring indicator to transmit data while the devices are powered down. The devices operate
at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew-rate.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−0°C to 70°C
SSOP (DL)
TSSOP (DGG)
Tube of 25
Reel of 1000
Reel of 2000
SN75C23243DL
SN75C23243DLR
SN75C23243DGGR
75C23243
75C23243
−40°C to 85°C
SSOP (DL)
Tube of 25
Reel of 1000
SN65C23243DL
SN65C23243DLR
65C23243
TSSOP (DGG)
Reel of 2000 SN65C23243DGGR
65C23243
† _{Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are}
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
IBM is a trademark of International Business Machines Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2004, Texas Instruments Incorporated
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