参数资料
型号: SP3485CN-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: 3.3V
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)
其它名称: SP3485CN-L/TR-ND
3
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP3485_00_0692
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
SP3485 DRIVER AC Characteristics continued
Driver Enable to Output High
52
20
ns
Figures 4 and
Driver Enable to Output Low
60
20
ns
Figures 5 and
Driver Disable Time from Low
40
20
ns
Figures 5 and
Driver Disable Time from High
60
20
ns
Figures 4 and
SP3485 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V ≤ V
CM ≤ +12V
Input Hysteresis
20
mV
V
CM = 0V
Output Voltage HIGH
Vcc-0.4
Volts
V
ID = +200mV, -.5mA
Output Voltage LOW
0.4
Volts
V
ID = -200mV, 2.5mA
Three-State (High Impedance)
Output Current
+/-
A
0V ≤ V
O ≤ VCC; RE = VCC
Input Resistance
2
5
k
-7V ≤ V
CM ≤ +12V
Input Current (A, B); V
IN = 2V
+.0
mA
DE = 0V, V
CC = 0V or 3.6V,
V
IN = 2V
Input Current (A, B); V
IN = -7V
-0.8
mA
DE = 0V, V
CC = 0V or 3.6V,
V
IN = -7V
Short Circuit Current
7
60
mA
0V ≤ V
CM ≤ VCC
SP3485 RECEIVER
AC Characteristics
Maximum Data Rate
0
Mbps RE = 0V, DE = 0V
Receiver Input to Output, t
PLH
40
70
00
ns
Figures 6 and 2
Receiver Input to Output, t
PLH
70
ns
T
AMB = +25°C, Vcc = 3.3V,
Figures 6 and 2
Receiver Input to Output, t
PHL
40
70
00
ns
Figures 6 and 2
Receiver Input to Output, t
PHL
70
ns
T
AMB = +25°C, Vcc = 3.3V,
Figures 6 and 2
Differential Receiver Skew
4
ns
t
RSKEW = |tRPHL- tRPLH|,
Figures 6 and 2
Receiver Enable to Output Low
35
60
ns
Figures 7 and 3,
S
closed, S2 open
Receiver Enable to Output High
35
60
ns
Figures 7 and 3,
S
2 closed, S open
Receiver Disable from Low
35
60
ns
Figures 7 and 3,
S
closed, S2 open
Receiver Disable from High
35
60
ns
Figures 7 and 3,
S
2 closed, S open
POWER REQUIREMENTS
Supply Current , No Load
000
2000
A
RE, DI = 0V or V
CC ; DE = VCC
Supply Current , No Load
800
500
A
RE = 0V, DI = 0V or V
CC, DE = 0V
ELECTRICAL CHARACTERISTICS
T
AMB = TMIN to TMAX and VCC = +3.3V +/-5% unless otherwise noted.
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