+5V-Powered, Multichannel
RS-232 Drivers/Receivers
MAX220–MAX249
Electrical Characteristics—MAX225/MAX244–MAX249 (continued)
(ꢄMAXX5% V
= +5ꢂ1V ±50ꢆ ꢄMAXꢁꢁꢀꢄMAXꢁ9% V
= +5ꢂ1V ±±10% external capacitors C±ꢀCꢁ = ±ꢃµꢆ ꢅ = ꢅ
to ꢅ
ꢆ unless
ꢄMA
CC
CC
M
ꢄIN
otherwise notedꢂ) (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
POWER SUPPLY AND CONTROL LOGIC
ꢄMAXX5
ꢁꢂ45
ꢁꢂ5
5ꢂX5
V
Supply Voltage Range
ꢄMAXꢁꢁꢀꢄMAXꢁ9
ꢄMAXX5
5ꢂ5
±1
±±
ꢁ1
54
8
X1
No load
ꢄMAXꢁꢁꢀꢄMAXꢁ9
ꢄMAXX5
.1
V
CC
Supply Current
mM
(Normal Operation)
.kΩ loads on
all outputs
ꢄMAXꢁꢁꢀꢄMAXꢁ9
ꢅ
ꢅ
= +X5°C
X5
ꢃM
51
M
Shutdown Supply Current
Control Input
= ꢅ
to ꢅ
ꢄMA
M
ꢄIN
Leakage current
Logic-low voltage
±±
ꢃM
±ꢂꢁ
±ꢂꢁ
1ꢂ8
V
Logic-high voltage
Xꢂꢁ
5
AC CHARACTERISTICS
C = 51pµ to X511pµ% R = .kΩ to 4kΩ% V = +5V%
L
M
L
CC
ꢅransition Slew Rate
±1
.1
V/ꢃs
ꢃs
ꢅ = +X5°C% measured from +.V to -.V or -.V to +.V
t
t
t
t
t
t
% µigure ±
% µigure ±
% µigure X
% µigure X
% µigure X
% µigure X
±ꢂ.
±ꢂ5
1ꢂ6
1ꢂ6
1ꢂ6
.ꢂ1
.ꢂ5
.ꢂ5
±ꢂ5
±ꢂ5
±1
PHLꢅ
PLHꢅ
PHLR
PLHR
PHLS
PLHS
ꢅransmitter Propagation Delay
ꢅLL to RS-X.X (Normal Operation)
Receiver Propagation Delay
ꢅLL to RS-X.X (Normal Operation)
ꢃs
ꢃs
Receiver Propagation Delay
ꢅLL to RS-X.X (Low-Power ꢄode)
±1
ꢅransmitter + to - Propagation
Delay Difference (Normal Operation)
t
- t
.51
.51
ns
ns
PHLꢅ PLHꢅ
Receiver + to - Propagation
Delay Difference (Normal Operation)
t
- t
PHLR PLHR
Receiver-Output Enable ꢅime
Receiver-Output Disable ꢅime
t
t
% µigure .
±11
±11
511
511
ns
ns
ER
% µigure .
DR
ꢄMAXꢁ6ꢀꢄMAXꢁ9
(excludes charge-pump startup)
5
ꢃs
ꢅransmitter Enable ꢅime
ꢅransmitter Disable ꢅime
t
t
Eꢅ
ꢄMAXX5/ꢄMAXꢁ5ꢀꢄMAXꢁ9
(includes charge-pump startup)
±1
ms
ns
% µigure ꢁ
±11
Dꢅ
Note 7: Mll units production tested at hotꢂ Specifications over temperature are guaranteed by designꢂ
Note 8: ꢅhe .11Ω minimum specification complies with EIM/ꢅIM-X.XE% but the actual resistance when in shutdown mode or V
=
CC
1V is ±1ꢄΩ as is implied by the leakage specificationꢂ
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