Electrical characteristics (continued) – Rainbow Electronics MAX13237E User Manual
Page 3
MAX13234E–MAX13237E
3Mbps RS-232 Transceivers with
Low-Voltage Interface
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3V to +5.5V, V
L
= +1.62V to V
CC
, T
A
= -40°C to +85°C, C1–C4 = 0.1µF, V
CC
= V
L
, tested at 3.3V ±10%. Typical values are
at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RECEIVER INPUTS
Input-Voltage Range
- 25
+25
V
V
CC
= +3.3V
0.6
1.2
Input Threshold Low
V
IL
T
A
= +25°C
V
CC
= +5V
0.8
1.5
V
V
CC
= +3.3V
1.5
2.4
Input Threshold High
V
IH
T
A
= +25°C
V
CC
= +5V
1.8
2.4
V
Input Hysteresis
0.5
V
Input Resistance
3
5
7
k
Ω
TRANSMITTER OUTPUTS
Output-Voltage Swing
All transmitter outputs loaded with 3k
Ω to
GND
±5
±5.4
V
Output Resistance
V
CC
= V+ = V- = 0V, transmitter outputs =
±2V
300
10M
Ω
Output Short-Circuit Current
-60
+60
mA
Output Leakage Current
V
CC
= 0V or +3V to +5.5V, V
OUT
= ±12V,
transmitters disabled
-25
+25
µA
AutoShutdown Plus (FORCEON = GND,
FORCEOFF = V
L
)
Positive threshold, Figure 1
2.7
V
Receiver Input Threshold Valid
Level
Negative threshold, Figure 1
-2.7
V
Receiver Input Threshold
Invalid Level
Figure 1
-0.3
+0.3
V
Receiver or Transmitter Edge-to-
Transmitters Enabled
t
WU
V
L
= 5V, Figure 1 (Note 3)
100
µs
Receiver or Transmitter Edge-to-
Transmitters Shutdown
t
AUTOSHDN
V
L
= 5V, Figure 1 (Note 3)
15
30
60
s
TIMING CHARACTERISTICS (MAX13234E/MAX13236E)
Maximum Data Rate
R
L
= 3k
Ω, C
L
= 1000pF, one transmitter
switching
250
kbps
Receiver Propagation Delay
t
RPHL
,
t
RPLH
C
L
= 150pF, Figures 2, 3
0.15
µs
Transmitter Skew
|t
TPHL
-
t
TPLH
|
Figures 4, 5 (Note 4)
100
ns
Receiver Skew
|t
RPHL
-
t
RPLH
|
Figures 2, 3
50
ns