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MAX3233E Datasheet(数据表) 1 Page - Maxim Integrated Products

部件型号  MAX3233E
说明  ±15kV ESD-Protected, 1μA, 250kbps, 3.3V/5V, Dual RS-232 Transceivers with Internal Capacitors
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制造商  MAXIM [Maxim Integrated Products]
网页  http://www.maxim-ic.com
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MAX3233E Datasheet(HTML) 1 Page - Maxim Integrated Products

 
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For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
________________General Description
The MAX3233E/MAX3235E are EIA/TIA-232 and V.28/V.24
communications interfaces with automatic shutdown/
wake-up features, high data-rate capabilities, and
enhanced electrostatic discharge (ESD) protection. All
transmitter outputs and receiver inputs are protected to
±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV
using IEC 1000-4-2 Contact Discharge, and to ±15kV
using the Human Body Model. The MAX3233E operates
from a +3.3V supply; the MAX3235E operates from +5.0V.
All devices achieve a 1µA supply current using Maxim’s
revolutionary AutoShutdown Plus™ feature. These
devices automatically enter a low-power shutdown
mode when the following two conditions occur: either
the RS-232 cable is disconnected or the transmitters of
the connected peripherals are inactive, and the UART
driving the transmitter inputs is inactive for more than
30 seconds. They turn on again when they sense a
valid transition at any transmitter or receiver input.
AutoShutdown Plus saves power without changes to
the existing BIOS or operating system.
The MAX3233E/MAX3235E have internal dual charge
pumps requiring no external capacitors. Both trans-
ceivers have a proprietary low-dropout transmitter out-
put stage that enables true RS-232 performance from a
+3.0V to +3.6V supply for the MAX3233E or a +4.5V to
+5.5V supply for the MAX3235E. These devices are
guaranteed to operate up to 250kbps. Both are avail-
able in space-saving 20-pin wide SO or plastic DIP
packages.
________________________Applications
Subnotebook and Palmtop Computers
Cellular Phones
Battery-Powered Equipment
Hand-Held Equipment
Peripherals
Embedded Systems
____________________________Features
o ESD Protection for RS-232 I/O Pins
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
o Latchup Free
o 1µA Supply Current
o AutoShutdown Plus—1997 EDN Magazine
Innovation of the Year
o Single-Supply Operation
+3.0V to +3.6V (MAX3233E)
+4.5V to +5.5V (MAX3235E)
o 250kbps Guaranteed Data Rate
o 6V/µs Guaranteed Slew Rate
o Meets EIA/TIA-232 Specifications Down to 3.0V
(MAX3233E)
o Internal Charge-Pump Capacitors
±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual
RS-232 Transceivers with Internal Capacitors
________________________________________________________________
Maxim Integrated Products
1
19-1473; Rev 0; 4/99
PART
MAX3233ECWP
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
20 SO
AutoShutdown Plus is a trademark of Maxim Integrated Products.
_______________Ordering Information
Ordering Information continued at end of data sheet.
MAX3233E
MAX3235E
12
13
14
15
16
17
18
4
1
R2OUT
R2IN
T2OUT
GND
V-
C2-
C2+
C1-
C1+
V+
V+
INVALID
T2IN
T1IN
FORCEON
R1OUT
T1OUT
R1IN
VCC
FORCEOFF
2
9
10
5
6
7
8
3
19
20
11
CHARGE
PUMP
SO/DIP
Pin Configuration/
Functional Diagram
Typical Operating Circuit appears at end of data sheet.
MAX3233ECPP
0°C to +70°C
20 Plastic DIP
MAX3233EEPP
-40°C to +85°C
20 Plastic DIP
MAX3233EEWP
-40°C to +85°C
20 SO
Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577;
4,797,899; 4,809,152; 4,897,774; 4,999,761; 5,649,210; and other
patents pending.




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