1µA Supply Current, 1Mbps, 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3V to +5.5V, C1–C4 = 0.1µF, tested at 3.3V ±10%; C
L
= 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10%; T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
TRANSMITTER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Output Leakage Current
V
CC
= 0 or 3V to 5.5V, V
OUT
= ±12V,
Transmitters disabled
All transmitter outputs loaded with 3kΩ to
ground
V
CC
= V+ = V- = 0, transmitter outputs = ±2V
±5
300
±5.4
10M
±60
±25
V
Ω
mA
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX3224–MAX3227/MAX3244/MAX3245
†
MOUSE DRIVEABILITY
(MAX3244/MAX3245)
T1IN = T2IN = GND, T3IN = V
CC
,
T3OUT loaded with 3kΩ to GND,
Transmitter Output Voltage
T1OUT and T2OUT loaded with
2.5mA each
AUTOSHUTDOWN PLUS
(FORCEON = GND,
FORCEOFF
= V
CC
)
Receiver Input Threshold to
INVALID
Output High
Receiver Input Threshold to
INVALID
Output Low
INVALID,
READY
(MAX3224–MAX3227)
Output Voltage Low
INVALID,
READY
(MAX3224–MAX3227)
Output Voltage High
Receiver Positive or Negative
Threshold to
INVALID
High
Receiver Positive or Negative
Threshold to
INVALID
Low
Receiver or Transmitter Edge to
Transmitters Enabled
t
INVH
t
INVL
t
WU
Figure 4a
Figure 4a
Positive threshold
Negative threshold
-2.7
-0.3
0.3
±5
V
2.7
V
V
I
OUT
= -1.6mA
0.4
V
I
OUT
= -1.0mA
V
CC
- 0.6
V
V
CC
= 5V, Figure 4b
V
CC
= 5V, Figure 4b
V
CC
= 5V, Figure 5b (Note 2)
15
1
30
100
30
60
µs
µs
µs
s
Receiver or Transmitter Edge to
t
AUTOSHDN
V
CC
= 5V, Figure 5b (Note 2)
Transmitters Shutdown
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
