SP3221 Ver la hoja de datos (PDF) - Signal Processing Technologies
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SP3221 Datasheet PDF : 18 Pages
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SPECIFICATIONS (continued)
Unless otherwise noted, the following specifications apply for VCC = +3.0V to +5.5V with TAMB = TMIN to TMAX.
Typical values apply at VCC = +3.3V or +5.0V and TAMB = 25°C.
PARAMETER
MIN. TYP. MAX. UNITS CONDITIONS
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation Delay
tPHL
tPLH
Receiver Output Enable Time
Receiver Output Disable Time
Driver Skew
Receiver Skew
Transition-Region Slew Rate
120 240
0.3
0.3
200
200
100
200
500
1000
30
kbps RL = 3KΩ, CL = 1000pF, one driver active
µs Receiver input to Receiver output, CL = 150pF
ns Normal operation
ns Normal operation
ns
ns
V/µs
| t - t |, T = 25oC
PHL PLH
AMB
| tPHL - tPLH |
VCC= 3.3V, RL = 3KΩ, TAMB = 25oC,
measurements taken from -3.0V to +3.0V or
+3.0V to -3.0V
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 235Kbps data rate, all drivers
loaded with 3KΩ, 0.1µF charge pump capacitors, and TAMB = +25°C.
6
14
12
4
10
2
Vout+
Vout-
8
0
6
0
500
1000
1500
-2
4
+Slew
-Slew
-4
2
-6
Load Capacitance [pF]
Figure 1. Transmitter Output Voltage VS. Load
Capacitance
0
0
500
1000
1500
2000
Load Capacitance [pF]
Figure 2. Slew Rate VS. Load Capacitance
40
35
118KHz
60KHz
10KHz
30
25
20
15
10
5
0
0
500
1000
1500
2000
Load Capacitance [pF]
Figure 3. Supply Current VS. Load Capacitance when
Transmitting Data
Date: 7/21/04
SP3221E +3.0V to +5.5V RS-232 Transceiver
4
© Copyright 2004 Sipex Corporation
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