TRS3243E
www.ti.com.............................................................................................................................................................. SLLS789B–APRIL 2007–REVISED JULY 2009
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV IEC ESD PROTECTION
1
FEATURES
DB, DW, OR PW PACKAGE
2
•
Single-Chip and Single-Supply Interface for
IBM™ PC/AT™ Serial Port
(TOP VIEW)
C2+
C2−
V−
C1+
1
28
27
26
25
24
23
22
21
20
19
18
17
•
ESD Protection for RS-232 Bus Pins
V+
VCC
2
–
–
–
±15-kV Human-Body Model (HBM)
3
±8-kV IEC61000-4-2, Contact Discharge
±15-kV IEC61000-4-2, Air-Gap Discharge
RIN1
RIN2
GND
C1−
4
5
•
Meets or Exceeds Requirements of
TIA/EIA-232-F and ITU v.28 Standards
RIN3
FORCEON
FORCEOFF
INVALID
ROUT2B
ROUT1
ROUT2
ROUT3
6
RIN4
RIN5
7
•
•
Operates With 3-V to 5.5-V VCC Supply
8
DOUT1
DOUT2
DOUT3
DIN3
9
Always-Active Noninverting Receiver Output
(ROUT2B)
10
11
12
•
Designed to Transmit at a Data Rate up to
500 kbit/s
DIN2 13
14
16 ROUT4
15
•
•
•
•
Low Standby Current . . . 1 µA Typ
External Capacitors . . . 4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
DIN1
ROUT5
QFN PACKAGE
(TOP VIEW)
Designed to Be Interchangeable With Industry
Standard '3243E Devices
•
•
Serial-Mouse Driveability
Auto-Powerdown Feature to Disable Driver
Outputs When No Valid RS-232 Signal Is
Sensed
32 31 30 29 28 27 26 25
RIN1
RIN2
GND
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
•
Package Options Include Plastic Small-Outline
(DW), Shrink Small-Outline (DB), and Thin
Shrink Small-Outline (PW) Packages
C1–
RIN3
FORCEON
FORCEOFF
INVALID
ROUTB2
ROUT1
ROUT2
RIN4
RIN5
APPLICATIONS
DOUT1
DOUT2
DOUT3
•
•
•
•
•
•
Battery-Powered Systems
PDAs
Notebooks
Laptops
Palmtop PCs
Hand-Held Equipment
9
10 11 12 13 14 15 16
N.C. − Not internally connected
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.
2
IBM, PC/AT are trademarks of International Business Machines Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2009, Texas Instruments Incorporated