Datasheet

MAX3320A/B/L/T
3V to 5.5V, up to 250kbps True RS-232 Transceiver
with 4µA AutoShutdown Plus and Power-On Reset
_______________________________________________________________________________________ 3
sec15 30 60Figure 3
Receiver or Transmitter Edge
to Shutdown
µs25Figure 5
Receiver or Transmitter Edge
to Transmitters Enabled
90 µsFigure 3
Receiver Positive or Negative
Threshold to INVALID Low
µs0.1Figure 3
Receiver Positive or Negative
Threshold to INVALID High
UNITSMIN TYP MAXCONDITIONSPARAMETER
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3V to 5.5V, C1–C4 = 0.1µF (tested at 3.3V ±10%), C1 = 0.047µF, C2–C4 = 0.33µF (tested at 5V ±10%), T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
V±5.0 ±5.4
All transmitter outputs loaded with 3kΩ to ground
Output Voltage Swing
Ω
300 10MV
CC
= V+ = V- = GND, V
T_OUT
= ±2VOutput Resistance
mA±35 ±60T_OUT = GND, T_IN = V
CC
or GNDOutput Short-Circuit Current
µA±25V
T_OUT
= ±12V, V
CC
= 0 to 5.5V, transmitters disabledOutput Leakage Current
V
1.0 5.5MAX3320_C
RESET Operating Voltage
Range
1.2 5.5MAX3320_E
V
4.00 4.25 4.50MAX3320A
RESET Threshold
2.70 2.85 3.00MAX3320B
4.50 4.63 4.75MAX3320L
3.00 3.08 3.15MAX3320T
V
0.3I
SINK
= 1.2mA, V
CC
= reset threshold, MAX3320B/T
RESET Output Voltage
0.4I
SINK
= 3.2mA, V
CC
= reset threshold, MAX3320A/L
0.3I
SINK
= 50µA, V
CC
> 1V, MAX3320_C
0.4I
SINK
= 100µA, V
CC
> 1.2V, MAX3320_E
VV
CC
- 0.6I
OUT
= -1mA
INVALID Output Voltage High
AUTOSHUTDOWN PLUS (FORCEON = GND, FORCEOFF = V
CC
)
TRANSMITTER OUTPUTS
RESET OUTPUT