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MAX222 Datasheet

  • MAX222

  • "+5V-Powered, Multichannel RS-232 Drivers/ Receivers"

  • 454.20KB

  • Maxim

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+5V-Powered, Multichannel RS-232
Drivers/Receivers
MAX220鈥揗AX249
ABSOLUTE MAXIMUM RATINGS鈥擬AX225/MAX244鈥揗AX249
Supply Voltage (V
CC
) ...............................................-0.3V to +6V
Input Voltages
T
IN
鈥?/div>
ENA, ENB, ENR, ENT, ENRA,
ENRB, ENTA, ENTB..................................-0.3V
to (V
CC
+ 0.3V)
R
IN
.....................................................................................卤25V
T
OUT
(Note 3).....................................................................卤15V
R
OUT
........................................................-0.3V to (V
CC
+ 0.3V)
Short Circuit (one output at a time)
T
OUT
to GND ............................................................Continuous
R
OUT
to GND............................................................Continuous
Continuous Power Dissipation (T
A
= +70掳C)
28-Pin Wide SO (derate 12.50mW/掳C above +70掳C) .............1W
40-Pin Plastic DIP (derate 11.11mW/掳C above +70掳C) ...611mW
44-Pin PLCC (derate 13.33mW/掳C above +70掳C) ...........1.07W
Operating Temperature Ranges
MAX225C_ _, MAX24_C_ _ ..................................0掳C to +70掳C
MAX225E_ _, MAX24_E_ _ ...............................-40掳C to +85掳C
Storage Temperature Range .............................-65掳C to +160掳C
Lead Temperature (soldering,10sec) ..............................+300掳C
Note 4:
Input voltage measured with transmitter output in a high-impedance state, shutdown, or V
CC
= 0V.
Stresses beyond those listed under 鈥淎bsolute Maximum Ratings鈥?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鈥擬AX225/MAX244鈥揗AX249
(MAX225, V
CC
= 5.0V 卤5%; MAX244鈥揗AX249, V
CC
= +5.0V 卤10%, external capacitors C1鈥揅4 = 1碌F; T
A
= T
MIN
to T
MAX
; unless oth-
erwise noted.)
PARAMETER
RS-232 TRANSMITTERS
Input Logic Threshold Low
Input Logic Threshold High
Logic Pull-Up/lnput Current
Data Rate
Output Voltage Swing
Tables 1a鈥?d
Normal operation
Shutdown
卤5
2
1.4
1.4
10
卤0.01
120
卤7.5
卤0.01
卤0.01
300
卤7
10M
卤30
卤25
V
CC
= 5V
V
CC
= 5V
V
CC
= 5V
I
OUT
= 3.2mA
I
OUT
= -1.0mA
Sourcing V
OUT
= GND
Shrinking V
OUT
= V
CC
Normal operation, outputs disabled,
Tables 1a鈥?d, 0V
鈮?/div>
V
OUT
鈮?/div>
V
CC
,
ENR_
= V
CC
3.5
-2
10
0.2
3
0.8
1.3
1.8
0.5
5
0.2
V
CC
- 0.2
-10
30
卤0.05
卤0.10
2.4
1.0
7
0.4
卤25
碌A
卤25
鈩?/div>
mA
V
V
V
V
k鈩?/div>
V
V
mA
碌A
50
卤1
64
0.8
V
V
碌A
kbits/sec
V
CONDITIONS
MIN
TYP
MAX
UNITS
Tables 1a鈥?d, normal operation
All transmitter outputs loaded with 3k鈩?to GND
ENA, ENB, ENT, ENTA, ENTB
=
V
CC,
V
OUT
= 卤15V
V
CC
= 0V,
V
OUT
= 卤15V
Output Leakage Current (shutdown)
Tables 1a鈥?d
Transmitter Output Resistance
Output Short-Circuit Current
RS-232 RECEIVERS
RS-232 Input Voltage Operating Range
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
RS-232 Input Resistance
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
TTL/CMOS Output Short-Circuit Current
TTL/CMOS Output Leakage Current
V
CC
= V+ = V- = 0V, V
OUT
= 卤2V (Note 4)
V
OUT
= 0V
8
_______________________________________________________________________________________

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