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| 型号： | SP3491EN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485 FULL DUPLX 14NSOIC |
| 标准包装： | 2,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS485 |
| 电源电压： | 3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC（窄型） |
| 包装： | 带卷 (TR) |
4
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP3490_349_02_0270
ELECTRICAL CHARACTERISTICS
T
AMB = TMIN to TMAX and VCC = +3.3V +/-5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
SP3491 DRIVER
DC Characteristics
Differential Output Voltage
GND
Vcc
Volts
Unloaded; R = ∞ ; Figure 1
Differential Output Voltage
2
Vcc
Volts
With Load; R = 50 (RS-422);
Figure
Differential Output Voltage
.5
Vcc
Volts
With Load; R = 27 (RS-485);
Figure
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary states
0.2
Volts
R = 27 or R = 50; Figure 1
Driver Common Mode Output
Voltage
3
Volts
R = 27 or R = 50; Figure 1
Input High Voltage
2.0
Volts
Applies to DE, D, REB
Input Low Voltage
0.8
Volts
Applies to DE, D, REB
Input Current
+/-0
A
Applies to DE, D, REB
Driver Short Circuit Current
V
OUT = HIGH
+/-250
mA
-7V ≤ V
O ≤ +12V; Figure 8
V
OUT = LOW
+/-250
mA
-7V ≤ V
O ≤ +12V; Figure 8
SP3491 DRIVER
AC Characteristics
Max. Transmission Rate
0
Mbps
Driver Input to Output, t
PLH
20
40
60
ns
Figures 2 & 9
Driver Input to Output, t
PHL
20
40
60
ns
Figures 2 & 9
Differential Driver Skew
2
ns
|t
PHL(Y)- tPLH(Y)|, |tPHL(Z)- tPLH(Z)|,
Figures 2 and 9
Driver Rise or Fall Time
5
20
ns
From 0%-90%; Figures 3 and 0
Driver Enable to Output HIGH
52
20
ns
Figures 4 and
Driver Enable to Output LOW
60
20
ns
Figures 5 and
Driver Disable from LOW
40
20
ns
Figures 5 and
Driver Disable from HIGH
60
20
ns
Figures 4 and
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相关代理商/技术参数 |
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|---|---|
| SP3491EP | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate |
| SP3493 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+3.3V Low Power RS-485/RS-422 Transceivers |
| SP3493CN | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers |
| SP3493CP | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+3.3V Low Power RS-485/RS-422 Transceivers |
| SP3493EN | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers |
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