Datasheet

±15kV ESD-Protected, 1µA, 1Mbps, 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
TIMING CHARACTERISTICS—MAX3224E/MAX3226E/MAX3244E
(V
CC
= +3V to +5.5V, C1–C4 = 0.1µF, tested at 3.3V ±10%; C
1
= 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.)
TIMING CHARACTERISTICS—MAX3225E/MAX3227E/MAX3245E
(V
CC
= +3V to +5.5V, C1–C4 = 0.1µF, tested at 3.3V ±10%; C
1
= 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.)
Note 2: A transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic thresholds.
Note 3: Transmitter skew is measured at the transmitter zero cross points.
C
L
= 150pF
to 1000pF
R_IN to R_OUT, C
L
= 150pF
R
L
= 3kΩ, C
L
= 1000pF,
one transmitter switching
V
CC
= 3.3V, T
A
= +25°C,
R
L
= 3kΩ to 7kΩ,
measured from +3V to -3V
or -3V to +3V, one trans-
mitter switching
Normal operation (MAX3244E only)
Normal operation (MAX3244E only)
(Note 3)
CONDITIONS
0.15t
PLH
µs
0.15t
PHL
kbps250Maximum Data Rate
Receiver Propagation Delay
V/µs630Transition-Region Slew Rate
ns200Receiver Output Enable Time
ns200Receiver Output Disable Time
ns100
⏐
t
PHL
- t
PLH
⏐
Transmitter Skew
ns50
⏐
t
PHL
- t
PLH ⏐
Receiver Skew
UNITSMIN TYP MAXSYMBOLPARAMETER
V
CC
= 4.5V to 5.5V, R
L
= 3kΩ,
C
L
= 1000pF, one transmitter switching
V
CC
= 3.0V to 4.5V, R
L
= 3kΩ,
C
L
= 250pF, one transmitter switching
R
L
= 3kΩ, C
L
= 1000pF,
one transmitter switching
V
CC
= 3.3V, T
A
= +25°C,
R
L
= 3kΩ to 7kΩ, C
L
= 150pF to 1000pF,
measured from +3V to -3V or -3V to +3V,
one transmitter switching
(Note 3)
R_IN to R_OUT, C
L
= 150pF
Normal operation (MAX3245E only)
Normal operation (MAX3245E only)
CONDITIONS
1000
1000
kbps
250
Maximum Data Rate
V/µs24 150Transition-Region Slew Rate
ns50
⏐
t
PHL
- t
PLH ⏐
Receiver Skew
ns25
⏐
t
PHL
- t
PLH
⏐
Transmitter Skew
µs
0.15t
PHL
Receiver Propagation Delay
0.15t
PLH
ns200Receiver Output Enable Time
ns200Receiver Output Disable Time
UNITSMIN TYP MAXSYMBOLPARAMETER
4
Maxim Integrated
MAX3224E/MAX3225E/
MAX3226E/MAX3227E/MAX3244E/MAX3245E