+5V, 1µA, Single RS-232 Transceiver
with AutoShutdown
ELECTRICAL CHARACTERISTICS (continued)
(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
RECEIVER INPUT
Input Voltage Range
Input Threshold Low
Input Threshold High
Input Hysteresis
Input Resistance
TRANSMITTER OUTPUT
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Driver loaded with 3kΩ to ground
V
CC
= V+ = V- = 0, V
OUT
= ±2V
±5
300
±10
±60
±9
V
Ω
mA
T
A
= +25°C, V
CC
= 5V
T
A
= +25°C, V
CC
= 5V
V
CC
= 5V, no hysteresis in shutdown
T
A
= +25°C, V
CC
= 5V
3
-25
0.8
1.2
1.7
0.5
5
7
2.4
25
V
V
V
V
kΩ
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX221
TIMING 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
Maximum Data Rate
Receiver Propagation Delay
Receiver Output Enable Time
Receiver Output Disable Time
Transmitter Skew
Receiver Skew
Transition-Region Slew Rate
t
PHL,
t
PLH
SYMBOL
CONDITIONS
R
L
= 3kΩ to 7kΩ, C
L
= 50pF to 1000pF,
V
CC
= 4.5V
C
L
= 150pF
Normal operation
Normal operation
MIN
250
0.15
300
200
200
50
T
A
= +25°C, V
CC
= 5V, R
L
= 3kΩ to 7kΩ,
C
L
= 500pF to 1000pF, measured from
-3V to +3V or +3V to -3V
3
6
30
TYP
MAX
UNITS
kbps
µs
ns
ns
ns
ns
V/µs
|
t
PHL
- t
PLH
|
|
t
PHL
- t
PLH
|
(Note 1)
Note 1:
Transmitter skew is measured at the transmitter zero crosspoints.
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
