參數(shù)資料
型號(hào)： SP485EMN-L/TR
廠商： Exar Corporation
文件頁(yè)數(shù)： 3/10頁(yè)
文件大小： 0K
描述： IC TXRX RS485 HALF DUPLEX 8NSOIC
標(biāo)準(zhǔn)包裝： 2,500
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 1/1
規(guī)程： RS485
電源電壓： 5V
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOICN
包裝： 帶卷 (TR)
其它名稱： SP485EMN-L/TR-ND
2
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP48E,485E_04_05243
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation 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
Input Voltages
Logic.........................-0.3V to (Vcc + 0.5V)
Drivers......................-0.3V to (Vcc + 0.5V)
Receivers.........................................+/-15V
ELECTRICAL CHARACTERISTICS
T
MIN to TMAX and VCC = +5.0V +/-5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
SP481E/SP485E DRIVER
DC Characteristics
Differential Output Voltage
GND
Vcc
Volts
Unloaded; R = ∞ ; see Figure 1
Differential Output Voltage
2
Vcc
Volts
With Load; R = 50 (RS-422); see
Figure 1
Differential Output Voltage
.5
Vcc
Volts
With Load; R = 27 (RS-485); 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 DE, DI, RE
Input Low Voltage
0.8
Volts
Applies to DE, DI, RE
Input Current
+/-0
A
Applies to DE, DI, RE
Driver Short Circuit Current
V
OUT = HIGH
+/-250
mA
-7V ≤ V
O ≤ +12V
V
OUT = LOW
+/-250
mA
-7V ≤ V
O ≤ +12V
SP481E/SP485E DRIVER
AC Characteristics
Max. Transmission Rate
0
Mbps
RE = 5V, DE = 5V; R
DIFF = 54,
C
L = CL2 = 00pF
Driver Input to Output, t
PLH
30
60
ns
See Figures 3 & 5, R
DIFF = 54,
C
L = CL2 = 00pF
Driver Input to Output, t
PLH
(SP485EMN ONLY)
30
80
ns
Driver Input to Output, t
PHL
30
60
ns
See Figures 3 & 5, R
DIFF = 54,
C
L = CL2 = 00pF
Driver Input to Output, t
PHL
(SP485EMN ONLY)
30
80
ns
Driver Skew
5
0
ns
see Figures 3 and 5,
t
SKEW = |tDPHL - tDPLH|
Driver Rise or Fall Time
5
40
ns
From 0%-90%; R
DIFF = 54
C
L = CL2 = 100pF; see Figures 3
and 6
Output Voltages
Logic.........................-0.3V to (Vcc + 0.5V)
Drivers.............................................+/-15V
Receivers..................-0.3V to (Vcc + 0.5V)
Storage Temperature.......................-65C to +150C
Power Dissipation
8-pin NSOIC...................................................550mW
(derate 6.60mW/C above +70C)
8-pin PDIP....................................................000mW
(derate .8mW/C above +70C)
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