XR32430EUCRTR-F Datasheet, PDF (4/14 Pages) Exar Corporation – 3-Driver/5-Receiver Intelligent RS-232 Transceiver with 1.65V-5.5V Interface

XR32430/XR32431
Symbol
Parameter
Conditions
Min
Typ
V_IH
Input High Voltage
V_CC = 3.3V
•
1.5
V_CC = 5.0V
•
1.8
RX_HYS
Receiver Input Hysteresis
0.3
RX_R
Receiver Input Resistance
•
3
5
AUTO ON-LINE CIRCUITRY CHARACTERISTICS (ONLINE = GND, SHUTDOWN = V_L , V_L = V_CC)
RX_STSH
Receiver Threshold to STATUS high
level
•
-2.7
RX_STSL
Receiver Threshold to STATUS low
level
•
-0.3
t_STSH
Receiver Threshold to STATUS high Figure 11
0.2
t_STSL
Receiver Threshold to STATUS low Figure 11
30
t_ONLINE
Receiver Thresholds to Drivers
Figure 11, (charge pump fully dis-
30
Enabled
charged when receiver threshold
crossed)
t_OFFLINE Receiver Thresholds to Drivers Dis-
Figure 11
35
abled
TIMING CHARACTERISTICS
f_MAX
Max Output Frequency (Speed U)
R_L = 3K, C_L = 250pF, 1 driver active,
•
1000
T_AMB = 0°C to 70°C
Max Output Frequency (Speed H)
R_L = 3K, C_L = 1000pF, 1 driver active, •
460
T_AMB = 0°C to 70°C
Max Output Frequency (Speed B)
R_L = 3K, C_L = 1000pF, 1 driver active
•
250
t_PHL
Receiver Propagation Delay (high to Receiver input (<10ns rise/fall) to
0.15
low)
Receiver output, C_L = 150pF
t_PLH
Receiver Propagation Delay (low to Receiver input (<10ns rise/fall) to
0.15
high)
Receiver output, C_L = 150pF
t_RXSKEW Receiver Skew
|t_{PHL -} t_PLH|
50
t_RXOE
Receiver Output Enable Time
Normal operation
200
t_RXOD
Receiver Output Disable Time
Normal operation
200
t_TXSKEW Driver Skew (Speeds U and H)
|t_{PHL -} t_PLH| (Driver propagation delays) •
30
Driver Skew (Speed B)
|t_{PHL -} t_PLH| (Driver propagation delays) •
100
TX_SLEW Transition-Region Slew Rate
V_CC = 3.3V, R_L = 3Kto 7K,
Speeds U
C_L = 150pF to 250pF, Measured from
90
-3.0V to +3.0V or +3.0V to -3.0V
Transition-Region Slew Rate
V_CC = 3.3V, R_L = 3Kto 7K,
Speed H
C_L = 150pF to 1000pF, Measured from
90
Transition-Region Slew Rate
-3.0V to +3.0V or +3.0V to -3.0V
•6
Speed B
* Limits applying over the full operating temperature range are denoted by a “•”.
Max
Units
2.4
V
2.4
V
V
7
K
+2.7
V
+0.3
V
s
s
s
s
Kbps
Kbps
Kbps
s
s
ns
ns
ns
100
ns
500
ns
V/s
V/s
30
V/s
© 2014 Exar Corporation
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exar.com/XR32430_XR32431
Rev 1A