Datasheet

ns
SPI/MICROWIRE-Compatible UART and ±15kV ESD-
Protected RS-232 Transceivers with Internal Capacitors
ELECTRICAL CHARACTERISTICS—MAX3111E (continued)
(V
CC
= +3.0V to +3.6V, V
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are measured for baud rate set to 9600baud at
V
CC
= +3.3V, T
A
= +25°C.) (Note 2)
Note 2: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device
ground unless otherwise noted.
Note 3: I
CCSHDN(H)
represents a hardware-only shutdown. In hardware shutdown, the UART is in normal operation and the charge
pumps for the RS-232 transmitters are shut down.
Note 4: I
CCSHDN(H+S)
represents a simultaneous software and hardware shutdown in which the UART and charge pumps are
shut down.
Note 5: Transmitter skew is measured at the transmitter zero cross points.
Receiver input to receiver output
R
L
= 3kΩ, C
L
= 1000pF,
one-transmitter switching
V
CC
= 3.3V,
R
L
= 3kΩ to 7kΩ,
T
A
= +25°C,
measured from
+3V to -3V or
-3V to +3V
C
L
= 150pF
(Note 5)
150t
PHL
Receiver Propagation Delay
kbps250Maximum Data Rate
V/µs
630
Transition-Region Slew Rate
ns
150t
PLH
C
L
= 150pF to
1000pF
ns200|t
PHL
- t
PLH
| Transmitter Skew
ns100|t
PHL
- t
PLH
| Receiver Skew
430
C
L
= 150pF to
2500pF
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
RS-232 AC TIMING
Maxim Integrated
7
MAX3110E/MAX3111E