MAX3243-EP
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER
WITH ±15-kV ESD (HBM) PROTECTION
www.ti.com
SGLS328A–MARCH 2006–REVISED MAY 2006
FEATURES
•
Applications
•
Controlled Baseline
– Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
– One Assembly/Test Site, One Fabrication
Site
•
•
Extended Temperature Performance of -55°C
to 125°C
DB OR PW PACKAGE
(TOP VIEW)
Enhanced Diminishing Manufacturing
Sources (DMS) Support
C2+
C2−
1
28 C1+
2
27
26
25
24
23
22
21
20
19
18
17
16
15
V+
•
•
•
Enhanced Product-Change Notification
V−
3
V
CC
(1)
Qualification Pedigree
4
RIN1
RIN2
RIN3
RIN4
RIN5
DOUT1
DOUT2
DOUT3
DIN3
DIN2
DIN1
GND
C1−
Single-Chip and Single-Supply Interface
for IBM™ PC/AT™ Serial Port
5
6
FORCEON
FORCEOFF
INVALID
ROUT2B
ROUT1
ROUT2
ROUT3
ROUT4
ROUT5
•
•
RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM)
7
8
D Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
9
10
11
12
13
14
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•
•
•
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Operates With 3-V to 5.5-V VCC Supply
Three Drivers and Five Receivers
Low Standby Current . . . 1 mA Typical
External Capacitors . . . 4 × 0.1 mF
Accepts 5-V Logic Input With 3.3-V Supply
Always-Active Noninverting Receiver
Output (ROUT2B)
•
•
Serial-Mouse Driveability
Auto-Powerdown Feature to Disable Driver
Outputs When No Valid RS-232 Signal Is
Sensed
(1) Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
DESCRIPTION
The MAX3243 consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD
(HBM) protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of
TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the
serial-port connector. This combination of drivers and receivers matches that needed for the typical serial port
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, the device includes an always-active noninverting output (ROUT2B),
which allows applications using the ring indicator to transmit data while the device is powered down.
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, PC/AT are trademarks of IBM.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006, 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.