参数资料
| 型号： | SP485REN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 3/9页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485 HALF DUPLEX 8NSOIC |
| 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
3
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP485R_00_072309
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
RS-485 RECEIVER DC Characteristics (continued)
Common Mode Range
-7.0
+2.0
Volts
Receiver Sensitivity
+/-0.2
Volts
-7V ≤ V
CM ≤ +12V
Input Impedance
20
50
k
-7V ≤ V
CM ≤ +12V
RS-485 RECEIVER AC Characteristics
Maximum Data Rate
Mbps
Propagation Delay; t
PHL
200
ns
See Figures 4 & 8, R
DIFF = 54,
C
L = CL2 = 00pF
Propagation Delay; t
PLH
200
ns
See Figures 4 & 8, R
DIFF = 54,
C
L = CL2 = 00pF
Differential Receiver Skew
60
ns
See Figures 4 & 8, R
DIFF = 54,
C
L = CL2 = 00pF,
t
SKEW = |tPHL - tPLH|
RS-485 DRIVER Enable / Disable Time
Driver Enable to Output Low
40
500
ns
C
L = 5pF, see Figures 5 and 7,
S
closed
Driver Enable to Output High
40
500
ns
C
L = 5pF, see Figures 5 and 7,
S
2 closed
Driver Disable Time from Low
40
500
ns
C
L = 5pF, see Figures 5 and 7,
S
closed
Driver Disable Time from High
40
500
ns
C
L = 5pF, see Figures 5 and 7,
S
2 closed
RS-485 RECEIVER Enable / Disable Time
Receiver Enable to Output Low
40
500
ns
C
L = 5pF, see Figures 3 and 9,
S
closed
Receiver Enable to Output High
40
500
ns
C
L = 5pF, see Figures 3 and 9,
S
2 closed
Receiver Disable from Low
40
500
ns
C
L = 5pF, see Figures 3 and 9,
S
closed
Receiver Disable from High
40
500
ns
C
L = 5pF, see Figures 3 and 9,
S
closed
POWER REQUIREMENTS
Supply Voltage V
CC
+4.75
+5.25
Volts
Supply Current I
CC, No Load
300
500
A
RE = Vcc or 0V, DE = 0V
Supply Current I
CC, No Load
500
900
A
RE = Vcc or 0V, DE = Vcc
ENVIRONMENTAL
Operating Temperature
Commercial (..C..)
0
+70
C
Industrial (..E..)
-40
+85
C
Storage Temperature
-65
+50
C
ELECTRICAL CHARACTERISTICS
Typically 25C @ V
CC = +5V unless otherwise noted.
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