+5V, 1µA, Single RS-232 Transceiver
with AutoShutdown
MAX221
ABSOLUTE MAXIMUM RATINGS
V
CC
..........................................................................-0.3V to +6V
V+ ...............................................................(V
CC
- 0.3V) to +14V
V- ...........................................................................-14V to +0.3V
Input Voltages
TIN ..........................................................-0.3V to (V+ + 0.3V)
RIN .................................................................................±30V
FORCEON,
FORCEOFF, EN.................-0.3V
to (V
CC
+ 0.3V)
Output Voltages
TOUT ..............................................(V- - 0.3V) to (V+ + 0.3V)
ROUT,
INVALID
....................................-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration, TOUT .....................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
TSSOP (derated 6.7mW/°C above +70°C) ................533mW
SSOP (derated 7.1mW/°C above +70°C) ..................571mW
Operating Temperature Range
MAX221C_ _ .....................................................0°C to +70°C
MAX221E_ _ ..................................................-40°C to +85°C
Maximum Junction Temperature ................................... +150°C
Storage Temperature Range ........................... -65°C to +150°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
(V
CC
= +5V ±10%, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
DC CHARACTERISTICS
V
CC
Supply Current
Shutdown Supply Current
AutoShutdown Supply Current
LOGIC INPUTS
Input Leakage Current
Input Threshold Low
Input Threshold High
Output Voltage Low
Output Voltage High
Output Leakage Current
AUTOSHUTDOWN
Receiver Input Threshold,
Transmitter Enabled
Receiver Input Threshold,
Transmitter Disabled
INVALID
Output Voltage Low
INVALID
Output Voltage High
Receiver Threshold to
Transmitter Enabled
Receiver Positive or Negative
Threshold to
INVALID
High
Receiver Positive or Negative
Threshold to
INVALID
Low
t
WU
t
INVH
t
INVL
Figure 3
I
CC
= 1µA, Figure 3
I
SINK
= 1.6mA
I
SOURCE
= 1.0mA
Figure 3
Figure 3
Figure 3
V
CC
- 0.6
250
1
30
Positive threshold
Negative threshold
-2.7
-0.3
0.3
0.4
2.7
V
V
V
V
µs
µs
µs
I
IN
V
IL
V
IH
V
OL
V
OH
TIN = 0 to V
CC
TIN;
EN, FORCEOFF,
FORCEON
TIN,
EN, FORCEOFF
ROUT; I
SINK
= 3.2mA
ROUT; I
SOURCE
= 1.0mA
EN
= V
CC
, 0
≤
ROUT
≤
V
CC
3.5
±0.05
±10
2.4
0.4
±1
0.8
µA
V
V
V
V
µA
I
CC
I
SHDN
I
AS
No load, T
A
= +25°C
T
A
= +25°C, Figure 1
5
1
1
10
10
10
mA
µA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
