MAX3238
3 V TO 5.5 V MULTICHANNEL RS 232 LINE DRIVER/RECEIVER
WITH
±15
kV ESD (HBM) PROTECTION
SLLS349J − JUNE 1999 − REVISED MARCH 2004
D
RS-232 Bus-Pin ESD Protection Exceeds
D
D
D
D
D
D
D
D
D
D
±15
kV Using Human-Body Model (HBM)
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
Operates With 3-V to 5.5-V V
CC
Supply
Operates Up To 250 kbit/s
Five Drivers and Three Receivers
Low Standby Current . . . 1
µA
Typical
External Capacitors . . . 4
×
0.1
µF
Accepts 5-V Logic Input With 3.3-V Supply
Always-Active Noninverting Receiver
Output (ROUT1B)
Alternative High-Speed Pin-Compatible
Device (1 Mbit/s)
− SNx5C3238
Applications
− Battery-Powered Systems, PDAs,
Notebooks, Subnotebooks, Laptops,
Palmtop PCs, Hand-Held Equipment,
Modems, and Printers
DB OR PW PACKAGE
(TOP VIEW)
C2 +
GND
C2−
V−
DOUT1
DOUT2
DOUT3
RIN1
RIN2
DOUT4
RIN3
DOUT5
FORCEON
FORCEOFF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C1+
V+
V
CC
C1−
DIN1
DIN2
DIN3
ROUT1
ROUT2
DIN4
ROUT3
DIN5
ROUT1B
INVALID
description/ordering information
The MAX3238 consists of five line drivers, three 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 notebook and subnotebook computer
applications. 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 (ROUT1B), which allows
applications using the ring indicator to transmit data while the device is powered down. These 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
SSOP (DB)
−0°C to 70°C
TSSOP (PW)
SSOP (DB)
−40°C to 85°C
TSSOP (PW)
PACKAGE†
Tube of 50
Reel of 2000
Tube of 50
Reel of 2000
Tube of 50
Reel of 2000
Tube of 50
Reel of 2000
ORDERABLE
PART NUMBER
MAX3238CDB
MAX3238CDBR
MAX3238CPW
MAX3238CPWR
MAX3238IDB
MAX3238IDBR
MAX3238IPW
MAX3238IPWR
MB3238I
MAX3238I
MA3238C
MAX3238C
TOP-SIDE
MARKING
† 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.
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
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
TI [ TEXAS INSTRUMENTS ]
