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PDF MAX232E Data sheet ( Hoja de datos )
| Número de pieza | MAX232E | |
| Descripción | 5V RS-232 Transceivers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX232E (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
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MAX202E–MAX213E,
MAX232E/MAX241E
EVALUATION KIT AVAILABLE
±15kV ESD-Protected,
5V RS-232 Transceivers
General Description
The MAX202E-MAX213E, MAX232E, and MAX241E are a
family of RS-232 and V.28 transceivers with high ±15kV
ESD HBM protection and integrated charge pump circuit-
ry for single +5V supply operation. The various combina-
tions of features are outlined in the Selector Guide. The
drivers and receivers for all ten devices meet all EIA/TIA-
232E and CCITT V.28 specifications at data rates up to
120kbps when loaded.
The MAX211E/MAX213E/MAX241E are available in 28-
pin SO and SSOP packages. The MAX202E/MAX232E
come in 16-pin TSSOP, narrow SO, wide SO, and DIP
packages. The MAX203E comes in a 20-pin DIP/SO
package, and needs no external charge-pump capaci-
tors. The MAX205E comes in a 24-pin wide DIP pack-
age, and also eliminates external charge-pump
capacitors.
Applications
• Battery-Powered Equipment
• Hand-Held Equipment
• Portable Diagnostics Equipment
Benefits and Features
• Saves Board Space
• Integrated High ±15kV HBM ESD Protection
• Integrated Charge Pump Circuitry
Eliminates the Need for a Bipolar ±12V Supply
Enables Single Supply Operation From +5V Supply
• Integrated 0.1µF Capacitors (MAX203E, MAX205E)
• 24 pin SSOP Package Saves up to 40% Versus SO
Package
• Saves Power for Reduced Power Requirements
• 1µA Shutdown Mode
• 15µA Shutdown Mode for MAX213E
Ordering Information
PART
MAX202ECPE
MAX202ECSE
TEMP RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
Ordering Information continued at end of data sheet.
Pin Configurations and Typical Operating Circuits appear at
end of data sheet.
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
PART
MAX202E
MAX203E
MAX205E
MAX206E
MAX207E
MAX208E
MAX211E
MAX213E
MAX232E
MAX241E
NO. OF RS-232 NO. OF RS-232
DRIVERS
RECEIVERS
22
22
55
43
53
44
45
45
22
45
RECEIVERS
ACTIVE IN
SHUTDOWN
0
0
0
0
0
0
0
2
0
0
NO. OF
EXTERNAL
CAPACITORS
(µF)
4 (0.1)
None
None
4 (0.1)
4 (0.1)
4 (0.1)
4 (0.1)
4 (0.1)
4 (1)
4 (1)
LOW-POWER
SHUTDOWN
No
No
Yes
Yes
No
No
Yes
Yes
No
Yes
TTL TRI-
STATE
No
No
Yes
Yes
No
No
Yes
Yes
No
Yes
19-0175; Rev 7; 1/15
1 page  
MAX202E–MAX213E,
MAX232E/MAX241E
±15kV ESD-Protected,
5V RS-232 Transceivers
Typical Operating Characteristics (continued)
MAX202E/MAX203E/MAX232E
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
14
ALL TRANSMITTERS LOADED
DATA RATE = 120kbps
12 RL = 3kΩ
10
8
-SLEW RATE
6
+SLEW RATE
4
2
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX205E–MAX208E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
7.5
20kbps
5.0 120kbps
240kbps
2.5
VCC = +4.5V, RL = 3kΩ
0 1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
-2.5
240kbps
-5.0 120kbps
-7.5
0
20kbps
1000 2000 3000 4000
LOAD CAPACITANCE (pF)
5000
MAX205E–MAX208E
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
20
18
VCC = +4.5V, RL = 3kΩ
1 TRANSMITTER AT FULL DATA RATE
16 4 TRANSMITTERS AT 1/8 DATA RATE
14
12
RISE
10 FALL
8
6
4
2
0
0 1000 2000 3000 4000
LOAD CAPACITANCE (pF)
5000
MAX205E–MAX208E
SUPPLY CURRENT
vs. LOAD CAPACITANCE
50
240kbps
45
40 120kbps
35
30 20kbps
25 VCC = +4.5V, RL = 3kΩ
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
20
0 1000 2000 3000 4000
LOAD CAPACITANCE (pF)
5000
MAX205E–MAX208E
OUTPUT VOLTAGE vs. DATA RATE
10.0
V+
7.5
5.0 VOUT+
2.5 VCC = +4.5V, RL = 3kΩ
0
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/8 DATA RATE
-2.5
-5.0 VOUT-
-7.5 V-
-10.0
0 30 60 90 120 150 180 210 240
DATA RATE (kbps)
www.maximintegrated.com
Maxim Integrated | 5
5 Page 
MAX202E–MAX213E,
MAX232E/MAX241E
±15kV ESD-Protected,
5V RS-232 Transceivers
for the MAX205E/MAX206E/MAX211E/MAX241E
(SHDN), but is active low for the MAX213E (SHDN).
The MAX213E’s receiver propagation delay is typically
0.5µs in normal operation. In shutdown mode, propaga-
tion delay increases to 4µs for both rising and falling
transitions. The MAX213E’s receiver inputs have
approximately 0.5V hysteresis, except in shutdown,
when receivers R4 and R5 have no hysteresis.
When entering shutdown with receivers active, R4 and
R5 are not valid until 80µs after SHDN is driven low.
When coming out of shutdown, all receiver outputs are
invalid until the charge pumps reach nominal voltage
levels (less than 2ms when using 0.1µF capacitors).
±15kV ESD Protection
As with all Maxim devices, ESD-protection structures
are incorporated on all pins to protect against electro-
static discharges encountered during handling and
assembly. The driver outputs and receiver inputs have
extra protection against static electricity. Maxim’s engi-
neers developed state-of-the-art structures to protect
these pins against ESD of ±15kV without damage. The
ESD structures withstand high ESD in all states: normal
operation, shutdown, and powered down. After an ESD
event, Maxim’s E versions keep working without latchup,
whereas competing RS-232 products can latch and
must be powered down to remove latchup.
ESD protection can be tested in various ways; the
transmitter outputs and receiver inputs of this product
family are characterized for protection to the following
limits:
1) ±15kV using the Human Body Model
2) ±8kV using the contact-discharge method specified
in IEC1000-4-2
3) ±15kV using IEC1000-4-2’s air-gap method.
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test set-up, test methodology, and test results.
Human Body Model
Figure 6a shows the Human Body Model, and Figure
6b shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
MAX211E
3V
0V
10V
5V
0V
-5V
-10V
SHDN
V+
V-
200μs/div
Figure 5. MAX211E V+ and V- when Exiting Shutdown (0.1µF
capacitors)
Table 1a. MAX205E/MAX206E/MAX211E/
MAX241E Control Pin Configurations
SHDN
EN
OPERATION
STATUS
0
0
Normal
Operation
0
1
Normal
Operation
Tx
All Active
All Active
Rx
All Active
All High-Z
1 X Shutdown All High-Z
All High-Z
X = Don't care.
Table 1b. MAX213E Control Pin
Configurations
SHDN
EN
OPERATION
STATUS
Tx 1–4
Rx
1–3 4, 5
0 0 Shutdown All High-Z High-Z High-Z
0 1 Shutdown All High-Z High-Z
1
0
Normal
Operation
All Active High-Z
1
1
Normal
Operation
All Active Active
*Active = active with reduced performance
Active*
High-Z
Active
www.maximintegrated.com
Maxim Integrated | 11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet MAX232E.PDF ] | |
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