MAX232, Elektronika, elementy

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19-4323; Rev 9; 5/00
+5V-Powered, Multichannel RS-232
Drivers/Receivers
General Description
The MAX220–MAX249 family of line drivers/receivers is
intended for all EIA/TIA-232E and V.28/V.24 communica-
tions interfaces, particularly applications where ±12V is
not available.
These parts are especially useful in battery-powered sys-
tems, since their low-power shutdown mode reduces
power dissipation to less than 5µW. The MAX225,
MAX233, MAX235, and MAX245/MAX246/MAX247 use
no external components and are recommended for appli-
cations where printed circuit board space is critical.
____________________________Features
Superior to Bipolar
Operate from Single +5V Power Supply
(+5V and +12V—MAX231/MAX239)
Low-Power Receive Mode in Shutdown
(MAX223/MAX242)
Meet All EIA/TIA-232E and V.28 Specifications
Multiple Drivers and Receivers
3-State Driver and Receiver Outputs
________________________Applications
Portable Computers
Low-Power Modems
Interface Translation
Battery-Powered RS-232 Systems
Multidrop RS-232 Networks
PART
MAX220
CPE
MAX220CSE
MAX220CWE
TEMP. RANGE
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
16 Wide SO
0°C to +70°C
0°C to +70°C
0°C to +70°C
MAX220C/D
0°C to +70°C
Dice*
MAX220EPE
MAX220ESE
MAX220EWE
-40°C to +85°C
16 Plastic DIP
16 Narrow SO
16 Wide SO
-40°C to +85°C
-40°C to +85°C
MAX220EJE
-40°C to +85°C
16 CERDIP
MAX220MJE
-55°C to +125°C
16 CERDIP
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
Selection Table
Power
No. of
Nominal
SHDN
Rx
Part
Supply
RS-232
No. of
Cap. Value & Three- Active in Data Rate
Number
(V)
Drivers/Rx Ext. Caps (µF)
State
SHDN
(kbps)
Features
MAX220
+5
2/2
4
0.1
No
—
120
Ultra-low-power, industry-standard pinout
MAX222
+5
2/2
4
0.1
Yes
—
200
Low-power shutdown
MAX223 (MAX213) +5
4/5
4
1.0 (0.1)
Yes
✔
120
MAX241 and receivers active in shutdown
MAX225
+5
5/5
0
—
Yes
✔
120
Available in SO
MAX230 (MAX200) +5
5/0
4
1.0 (0.1)
Yes
—
120
5 drivers with shutdown
MAX231 (MAX201) +5 and
2/2
2
1.0 (0.1)
No
—
120
Standard +5/+12V or battery supplies;
+7.5 to +13.2
same functions as MAX232
MAX232 (MAX202) +5
2/2
4
1.0 (0.1)
No
—
120 (64)
Industry standard
MAX232A
+5
2/2
4
0.1
No
—
200
Higher slew rate, small caps
MAX233 (MAX203) +5
2/2
0
—
No
—
120
No external caps
MAX233A
+5
2/2
0
—
No
—
200
No external caps, high slew rate
MAX234 (MAX204) +5
4/0
4
1.0 (0.1)
No
—
120
Replaces 1488
MAX235 (MAX205) +5
5/5
0
—
Yes
—
120
No external caps
MAX236 (MAX206) +5
4/3
4
1.0 (0.1)
Yes
—
120
Shutdown, three state
MAX237 (MAX207) +5
5/3
4
1.0 (0.1)
No
—
120
Complements IBM PC serial port
MAX238 (MAX208) +5
4/4
4
1.0 (0.1)
No
—
120
Replaces 1488 and 1489
MAX239 (MAX209) +5 and
3/5
2
1.0 (0.1)
No
—
120
Standard +5/+12V or battery supplies;
+7.5 to +13.2
single-package solution for IBM PC serial port
MAX240
+5
5/5
4
1.0
Yes
—
120
DIP or flatpack package
MAX241 (MAX211) +5
4/5
4
1.0 (0.1)
Yes
—
120
Complete IBM PC serial port
MAX242
+5
2/2
4
0.1
Yes
✔
200
Separate shutdown and enable
MAX243
+5
2/2
4
0.1
No
—
200
Open-line detection simplifies cabling
MAX244
+5
8/10
4
1.0
No
—
120
High slew rate
MAX245
+5
8/10
0
—
Yes
✔
120
High slew rate, int. caps, two shutdown modes
MAX246
+5
8/10
0
—
Yes
✔
120
High slew rate, int. caps, three shutdown modes
MAX247
+5
8/9
0
—
Yes
✔
120
High slew rate, int. caps, nine operating modes
MAX248
+5
8/8
4
1.0
Yes
✔
120
High slew rate, selective half-chip enables
MAX249
+5
6/10
4
1.0
Yes
✔
120
Available in quad flatpack package
________________________________________________________________
Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Open-Line Detection (MAX243)
Ordering Information
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243
Supply Voltage (V
CC
) ...............................................-0.3V to +6V
Input Voltages
T
IN
..............................................................-0.3V to (V
CC
- 0.3V)
R
IN
(Except MAX220) ........................................................±30V
R
IN
(MAX220).....................................................................±25V
T
OUT
(Except MAX220) (Note 1) .......................................±15V
T
OUT
(MAX220)...............................................................±13.2V
Output Voltages
T
OUT
...................................................................................±15V
R
OUT
.........................................................-0.3V to (V
CC
+ 0.3V)
Driver/Receiver Output Short Circuited to GND.........Continuous
Continuous Power Dissipation (T
A
= +70°C)
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW
18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW
20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW
16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW
16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW
18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW
20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW
20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW
18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mW
Operating Temperature Ranges
MAX2_ _AC_ _, MAX2_ _C_ _ .............................0°C to +70°C
MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40°C to +85°C
MAX2_ _AM_ _, MAX2_ _M_ _ .......................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
Input voltage measured with T
OUT
in high-impedance state, SHDN or V
CC
= 0V.
Note 2:
For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243
(V
CC
= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T
A
= T
MIN
to T
MAX
‚ unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RS-232 TRANSMITTERS
Output Voltage Swing
All transmitter outputs loaded with 3k
Ω
to GND
±5
±8
V
Input Logic Threshold Low
1.4
0.8
V
Input Logic Threshold High
All devices except MAX220
2
1.4
V
MAX220: V
CC
= 5.0V
2.4
Logic Pull-Up/lnput Current
All except MAX220, normal operation
5
40
µA
SHDN = 0V, MAX222/242, shutdown, MAX220
±0.01
±1
Output Leakage Current
V
CC
= 5.5V, SHDN = 0V, V
OUT
= ±15V, MAX222/242
±0.01
±10
µA
V
CC
= SHDN = 0V, V
OUT
= ±15V
±0.01
±10
Data Rate
200
116
kb/s
Transmitter Output Resistance
V
CC
= V+ = V- = 0V, V
OUT
= ±2V
300
10M
Ω
Output Short-Circuit Current
V
OUT
= 0V
±7
±22
mA
RS-232 RECEIVERS
RS-232 Input Voltage Operating Range
±30
V
RS-232 Input Threshold Low
V
CC
= 5V
All except MAX243 R2
IN
0.8
1.3
V
MAX243 R2
IN
(Note 2)
-3
RS-232 Input Threshold High
V
CC
= 5V
All except MAX243 R2
IN
1.8
2.4
V
MAX243 R2
IN
(Note 2)
-0.5
-0.1
RS-232 Input Hysteresis
All except MAX243, V
CC
= 5V, no hysteresis in shdn.
0.2
0.5
1
V
MAX243
1
RS-232 Input Resistance
3
5
7
k
Ω
TTL/CMOS Output Voltage Low
I
OUT
= 3.2mA
0.2
0.4
V
TTL/CMOS Output Voltage High
I
OUT
= -1.0mA
3.5 V
CC
- 0.2
V
TTL/CMOS Output Short-Circuit Current
Sourcing V
OUT
= GND
-2
-10
mA
Shrinking V
OUT
= V
CC
10
30
2 _______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
CC
= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T
A
= T
MIN
to T
MAX
‚ unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TTL/CMOS Output Leakage Current
SHDN = V
CC
or EN = V
CC
(SHDN = 0V for MAX222),
0V
≤
V
OUT
≤
V
CC
±0.05
±10
µA
EN Input Threshold Low
MAX242
1.4
0.8
V
EN Input Threshold High
MAX242
2.0
1.4
V
Operating Supply Voltage
4.5
5.5
V
No load
MAX220
0.5
2
MAX222/232A/233A/242/243
4
10
V
CC
Supply Current (SHDN = V
CC
),
Figures 5, 6, 11, 19
mA
load
both inputs
Ω
MAX220
12
MAX222/232A/233A/242/243
15
T
A
= +25°C
0.1
10
Shutdown Supply Current
MAX222/242
T
A
= 0°C to +70°C
2
50
µA
T
A
= -40°C to +85°C
2
50
T
A
= -55°C to +125°C
35
100
SHDN Input Leakage Current
MAX222/242
±1
µA
SHDN Threshold Low
MAX222/242
1.4
0.8
V
SHDN Threshold High
MAX222/242
2.0
1.4
V
,
V
CC
= 5V, T
A
= +25°C,
measured from +3V
to -3V or -3V to +3V
Ω
to 7k
Ω
MAX222/232A/233A/242/243
6
12
30
Transition Slew Rate
V/µs
MAX220
1.5
3
30
t
PHLT
MAX222/232A/233A/242/243
1.3
3.5
Transmitter Propagation Delay
TLL to RS-232 (normal operation),
Figure 1
MAX220
4
10
µs
MAX222/232A/233A/242/243
1.5
3.5
t
PLHT
MAX220
5
10
t
PHLR
MAX222/232A/233A/242/243
0.5
1
Receiver Propagation Delay
RS-232 to TLL (normal operation),
Figure 2
MAX220
0.6
3
µs
MAX222/232A/233A/242/243
0.6
1
t
PLHR
MAX220
0.8
3
Receiver Propagation Delay
RS-232 to TLL (shutdown), Figure 2
t
PHLS
MAX242
0.5
10
µs
t
PLHS
MAX242
2.5
10
Receiver-Output Enable Time, Figure 3 t
ER
MAX242
125
500
ns
Receiver-Output Disable Time, Figure 3 t
DR
MAX242
160
500
ns
Transmitter-Output Enable Time
(SHDN goes high), Figure 4
t
ET
MAX222/242, 0.1µF caps
(includes charge-pump start-up)
250
µs
Transmitter-Output Disable Time
(SHDN goes low), Figure 4
t
DT
MAX222/242, 0.1µF caps
600
ns
Transmitter + to - Propagation
Delay Difference (normal operation)
t
PHLT
- t
PLHT
MAX222/232A/233A/242/243
300
ns
MAX220
2000
Receiver + to - Propagation
Delay Difference (normal operation)
t
PHLR
- t
PLHR
MAX222/232A/233A/242/243
100
ns
MAX220
225
Note 3:
MAX243 R2
OUT
is guaranteed to be low when R2
IN
is
≥
0V or is floating.
_______________________________________________________________________________________ 3
3k
C
L
= 50pF to 2500pF,
R
L
= 3k
+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
OUTPUT VOLTAGE vs. LOAD CURRENT
AVAILABLE OUTPUT CURRENT
vs. DATA RATE
MAX222/MAX242
ON-TIME EXITING SHUTDOWN
10
8
11
+10V
1
µ
F
V+
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
1
µ
F CAPS
10
EITHER V+ OR V- LOADED
V
CC
= ±5V
NO LOAD ON
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
V+
6
4
2
0.1
µ
F CAPS
ALL CAPS
1
+5V
0.1
µ
F
9
µ
F
+5V
SHDN
V
CC
= +5.25V
0V
8
0
0V
ALL CAPS
0.1
µ
F
-2
V- LOADED, NO LOAD ON V+
7
V
CC
= +4.75V
1
µ
F CAPS
-4
-6
-8
0.1
µ
F
1
µ
F
6
5
0.1
µ
F CAPS
V+ LOADED, NO LOAD ON V-
V-
V-
-10
4
-10V
0
5
10
15
20
25
0
10
20
30
40
50
60
500
µ
s/div
LOAD CURRENT (mA)
DATA RATE (kbits/sec)
4 _______________________________________________________________________________________
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241
V
CC
...........................................................................-0.3V to +6V
V+ ................................................................(V
CC
- 0.3V) to +14V
V- ............................................................................+0.3V to -14V
Input Voltages
T
IN
............................................................-0.3V to (V
CC
+ 0.3V)
R
IN
......................................................................................±30V
Output Voltages
T
OUT
...................................................(V+ + 0.3V) to (V- - 0.3V)
R
OUT
.........................................................-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration, T
OUT
......................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)....800mW
16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW
20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW
24-Pin Narrow Plastic DIP
(derate 13.33mW/°C above +70°C) ..........1.07W
24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mW
16-Pin Wide SO (derate 9.52mW/°C above +70°C) .........762mW
20-Pin Wide SO (derate 10 00mW/°C above +70°C).......800mW
24-Pin Wide SO (derate 11.76mW/°C above +70°C).......941mW
28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W
44-Pin Plastic FP (derate 11.11mW/°C above +70°C) .....889mW
14-Pin CERDIP (derate 9.09mW/°C above +70°C) ..........727mW
16-Pin CERDIP (derate 10.00mW/°C above +70°C) ........800mW
20-Pin CERDIP (derate 11.11mW/°C above +70°C) ........889mW
24-Pin Narrow CERDIP
(derate 12.50mW/°C above +70°C) ..............1W
24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........1.6W
28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW
Operating Temperature Ranges
MAX2 _ _ C _ _......................................................0°C to +70°C
MAX2 _ _ E _ _ ...................................................-40°C to +85°C
MAX2 _ _ M _ _ ...............................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241
(MAX223/230/232/234/236/237/238/240/241, V
CC
= +5V ±10; MAX233/MAX235, V
CC
= 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239,
V
CC
= 5V ±10%; V+ = 7.5V to 13.2V; T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage Swing
All transmitter outputs loaded with 3k
Ω
to ground
±5.0
±7.3
V
MAX232/233
5
10
No load,
T
A
= +25°C
V
CC
Power-Supply Current
MAX223/230/234–238/240/241
7
15
mA
MAX231/239
0.4
1
V+ Power-Supply Current
MAX231
1.8
5
mA
MAX239
5
15
Shutdown Supply Current
T
A
= +25°C
MAX223
15
50
µA
MAX230/235/236/240/241
1
10
Input Logic Threshold Low T
IN
; EN, SHDN (MAX233); EN, SHDN (MAX230/235–241)
0.8
V
T
IN
2.0
Input Logic Threshold High
EN, SHDN (MAX223);
EN, SHDN (MAX230/235/236/240/241)
2.4
V
Logic Pull-Up Current
T
IN
=0V
1.5
200
µA
Receiver Input Voltage
Operating Range
-30
30
V
_______________________________________________________________________________________ 5
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