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参数资料
| 型号： | SP491EN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 6/10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： | 5V |
| 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) |
5
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-707 www.exar.com
SP490,49_0_0627
ABSOLUTEMAXIMUMRATINGS
Thesearestressratingsonlyandfunctionaloperationofthedevice
attheseratingsoranyotherabovethoseindicatedintheoperation
sections of the specifications below is not implied. Exposure to
absolute maximum rating conditions for extended periods of time
may affect reliability.
V
CC...................................................................................................+7V
InputVoltages
Logic.................................................-0.5Vto(V
CC+0.5V)
Drivers..............................................-0.5Vto(V
CC+0.5V)
Receivers................................................................±14V
OutputVoltages
Logic................................................-0.5Vto(V
CC+0.5V)
Drivers....................................................................±14V
Receivers.........................................-0.5Vto(V
CC+0.5V)
Storage Temperature.....................................................-65C to +150
Power Dissipation.................................................................1000mW
T
MIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX. UNITS CONDITIONS
SP491DRIVER
DCCharacteristics
Differential Output Voltage
GND
V
CC
Volts
Unloaded; R = ∞ ; see figure 1
Differential Output Voltage
2
V
CC
Volts
With Load; R = 50; (RS422);
see figure 1
Differential Output Voltage
.5
V
CC
Volts
With Load; R = 27; (RS485); see
figure 1
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
0.2
Volts
R = 27 or R = 50; see figure 1
Driver Common-Mode
Output Voltage
3
Volts
R = 27 or R = 50; see figure 1
Input High Voltage
2.0
Volts
Applies to D, REB, DE
Input Low Voltage
0.8
Volts
Applies to D, REB, DE
Input Current
±0
A
Applies to D, REB, DE
Driver Short-Circuit Current
V
OUT = HIGH
250
mA
-7V ≤ V
O ≤ 12V
V
OUT = LOW
250
mA
-7V ≤ V
O ≤ 12V
SP491DRIVER
ACCharacteristics
Maximum Data Rate
5
Mbps
REB = 5V, DE = 5V
Driver Input to Output
30
60
ns
t
PLH; RDIFF = 54, CL = CL2 = 00pF;
see figures 3 and 6
Driver Input to Output
30
60
ns
t
PHL; RDIFF = 54, CL = CL2 = 00pF;
see figures 3 and 6
Driver Skew
5
0
ns
see figures 3 and 6,
t
SKEW = | tDPLH - tDPHL |
Driver Rise or Fall Time
5
40
ns
From 0% to 90%; R
DIFF = 54,
C
L = CL2 = 00pF; see figures 3 and 6
Driver Enable to Output High
40
70
ns
C
L = CL2 = 00pF; see figures
4 and 7; S
2 closed
Driver Enable to Output Low
40
70
ns
C
L = CL2 = 00pF; see figures
4 and 7; S
closed
Driver Disable Time from Low
40
70
ns
C
L = CL2 = 00pF; see figures
4 and 7; S
closed
Driver Disable Time from High
40
70
ns
C
L = CL2 = 00pF; see figures
4 and 7; S
2 closed
ELECTRICALCHARACTERISTICS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP491ES | 制造商:Exar Corporation 功能描述: |
| SP491ES-L | 功能描述:RS-485接口IC Full Duplex RS-485 s RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| SP495 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Quad Differential RS-485 Transceiver |
| SP4959-16XP90 | 制造商:PCTEL 功能描述:ANTENNA UNIT |
| SP495CT | 制造商:Exar Corporation 功能描述:Line Transceiver, 4-Driver, 4-Receiver, 20 Pin, Plastic, SOP |
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