ꢀ ꢁꢂ ꢃ ꢄꢄ
ꢅ ꢆꢇ ꢀ ꢈꢉꢊ ꢋꢌꢍ ꢁꢎꢎꢏꢉ ꢐꢑ ꢆꢃꢒ ꢃ ꢉ ꢋꢎꢏ ꢓꢐꢋ ꢇꢏ ꢐꢔꢐꢏ ꢌꢏ ꢋ ꢇ ꢏꢐ
ꢕ ꢋꢊ ꢍ ꢄ ꢅ ꢆꢖ ꢇ ꢏꢑ ꢓ ꢗꢐ ꢘ ꢊꢏ ꢌꢊ ꢋꢘ ꢎ
SLLS567E − MAY 2003 − REVISED JANUARY 2004
DB OR DW PACKAGE
(TOP VIEW)
D
D
D
D
D
D
RS-232 Bus-Pin ESD Protection Exceeds
15 kV Using Human-Body Model (HBM)
Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DOUT3
DOUT1
DOUT2
RIN2
DOUT4
RIN3
ROUT3
SHDN
EN
2
Operates at 5-V V
Supply
CC
3
4
Four Drivers and Five Receivers
Operates Up To 120 kbit/s
5
ROUT2
DIN2
6
RIN4
ROUT4
DIN4
DIN3
ROUT5
RIN5
V−
Low Supply Current in Shutdown
Mode . . . 1 µA Typical
External Capacitors . . . 4 × 0.1 µF
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
7
DIN1
ROUT1
RIN1
8
D
9
10
11
12
13
14
D
GND
V
CC
C1+
V+
C1−
D
Applications
C2−
C2+
− Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
description/ordering information
The MAX211 device consists of four line drivers, five line receivers, and a dual charge-pump circuit with
15-kV ESD 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. The charge pump and four small external capacitors allow operation
from a single 5-V supply. The devices operate at data signaling rates up to 120 kbit/s and a maximum of 30-V/µs
driver output slew rate.
The MAX211 has both shutdown (SHDN) and enable control (EN). In shutdown mode, the charge pumps are
turned off, V+ is pulled down to V , V− is pulled to GND, and the transmitter outputs are disabled. This
CC
reduces supply current typically to 1 µA. EN is used to put the receiver outputs into the high-impedance state
to allow wired-OR connection of two RS-232 ports. It has no effect on the RS-232 drivers or the charge pumps.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
Tube of 20
Reel of 1000
Tube of 50
Reel of 2000
Tube of 20
Reel of 1000
Tube of 50
Reel of 2000
MAX211CDW
MAX211CDWR
MAX211CDB
MAX211CDBR
MAX211IDW
MAX211IDWR
MAX211IDB
SOIC (DW)
SSOP (DB)
SOIC (DW)
SSOP (DB)
MAX211C
0°C to 70°C
MAX211C
MAX211I
MAX211I
−40°C to 85°C
MAX211IDBR
†
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.
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Copyright 2004, Texas Instruments Incorporated
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