XR32220EBER-L-TR Datasheet, PDF (7/16 Pages) Exar Corporation – 2-Driver/2-Receiver Intelligent RS-232 Transceiver with 1.65V to 5.5V Interface

Typical Performance Characteristics
200
150
100
T1 at 1Mbps
T2 at 31.2Kbps
All TX loaded with 3K: // C_Load
50
0
0
500
1000
1500
2000
Load Capacitance (pF)
Figure 3. Transmitter Skew vs Load Capacitance
XR32220
70
T1 Driver at full Data Rate
T2 Driver at 15.5Kbps
60 all Drivers loaded with 3K: // C_Load
50
1Mbps
40
250Kbps
30
120Kbps
20
20Kbps
10
0
0
1000
2000
3000
4000
5000
Load Capacitance (pF)
Figure 6. Supply Current vs Load Capacitance
1⁶00
95
4
90
2
85
0₈₀
75
-2
70
-4₆₅
-660
2.5_0.1
800kHz
1 Driver at 1Mbps
Other Driver at 62.5Kbps
All Drivers loaded with 3K: // 250pF
3.3V DCM
2.5V DCM
1.8V DCM
1.5V DCM
1.2V DCM
1.0V DCM
3.3V CCM
2.5V CCM
1.8V CCM
1.5V CCM
1.2V CCM
1.0V CCM
3
3.5
4 _1.0
4.5
5
Supply _IV_Oo_Ul_Tta_(Ag₎e (V)
Figure 4. Transmitter Output Voltage vs Supply Voltage
50
T1 at Full Data Rate
45 ^{T2 at 15.5Kbps}
All drivers loaded with 3K: // 1000pF
40
35
30
25
20
15
10
5
0
2.5
3
3.5
4
Supply Voltage (V)
1Mbps
500Kbps
250Kbps
4.5
5
Figure 7. Supply Current vs Supply Voltage
6
4
2
XR32220EU, Supply = 3.3V,
0
T1 at Full Data Rate (1Mbps)
T2 Driver at 1/16th data rate
All Drivers loads 3K: // C_Load
-2
-4
-6
0
500
1000
1500
2000
Load Capacitance (pF)
Figure 5. Transmitter Output Voltage vs Load Capacitance
6
TxOUT+
4
2
XR32220EB, Supply = 3.3V,
0
T1 Driver at 250Kbps
T2 Driver at 15.5Kbps
All Drivers loads 3K: // C_Load
-2
-4
TxOUT-
-6
0
1000
2000
3000
4000
5000
Load Capacitance (pF)
Figure 8. Transmitter Output Voltage vs Load Capacitance
REV1B
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