Datasheet
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10
11
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28
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15
C2+
C2−
V−
RIN1
RIN2
RIN3
RIN4
RIN5
DOUT1
DOUT2
DOUT3
DIN3
DIN2
DIN1
C1+
V+
V
CC
GND
C1−
FORCEON
FORCEOFF
INVALID
ROUT2B
ROUT1
ROUT2
ROUT3
ROUT4
ROUT5
DB, DW, OR PW PACKAGE
(TOP VIEW)
QFN PACKAGE
(TOP VIEW)
GND
C1–
FORCEON
FORCEOFF
INVALID
ROUTB2
ROUT1
ROUT2
RIN1
RIN2
RIN3
RIN4
RIN5
DOUT1
DOUT2
DOUT3
NC
V–
C2–
C2+
C1+
V+
V
CC
NC
NC
DIN3
DIN2
DIN1
ROUT5
ROUT4
ROUT3
NC
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3132 30 29 28 27 26 25
109 11 12 13 14 15 16
MAX3243E
www.ti.com
SLLS657D –APRIL 2005– REVISED SEPTEMBER 2011
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV IEC ESD PROTECTION
Check for Samples: MAX3243E
1
FEATURES
2
• Single-Chip and Single-Supply Interface for
IBM™ PC/AT™ Serial Port
• ESD Protection for RS-232 Bus Pins
– ±15-kV Human-Body Model (HBM)
– ±8-kV IEC61000-4-2, Contact Discharge
– ±15-kV IEC61000-4-2, Air-Gap Discharge
• Meets or Exceeds Requirements of
TIA/EIA-232-F and ITU v.28 Standards
• Operates With 3-V to 5.5-V V
CC
Supply
• Always-Active Noninverting Receiver Output
(ROUT2B)
• Designed to Transmit at a Data Rate up to
500 kbit/s
• Low Standby Current . . . 1 μA Typ
• External Capacitors . . . 4 × 0.1 μF
• Accepts 5-V Logic Input With 3.3-V Supply
• Designed to Be Interchangeable With Maxim
MAX3243E
• Serial-Mouse Driveability
• Auto-Powerdown Feature to Disable Driver
Outputs When No Valid RS-232 Signal Is
Sensed
• Package Options Include Plastic Small-Outline
(DW), Shrink Small-Outline (DB), and Thin
Shrink Small-Outline (PW) Packages
APPLICATIONS
• Battery-Powered Systems
• PDAs
• Notebooks
• Laptops
• Palmtop PCs
• Hand-Held Equipment
1
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.
2IBM, PC/AT are trademarks of International Business Machines Corporation.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.