参数资料
型号: SP1481ECN-L
厂商: Exar Corporation
文件页数: 4/8页
文件大小: 0K
描述: IC TXRX RS485 DIFF ESD 8SOIC
标准包装: 98
类型: 收发器
驱动器/接收器数: 1/1
规程: RS422,RS485
电源电压: 4.25 V ~ 5.25 V
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: 管件
其它名称: 1016-1492-5
SP1481ECN-L-ND
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP48E-485E_03_05243
4
pin FUnction
Pin1–RO–ReceiverOutput.
Pin2–RE–ReceiverOutputEnableActiveLOW.
Pin3–DE–DriverOutputEnableActiveHIGH.
Pin4–DI–DriverInput.
Pin5–GND–GroundConnection.
Pin6–A–DriverOutput/ReceiverInputNon-inverting.
Pin7–B–DriverOutput/ReceiverInputInverting.
Pin8–Vcc–PositiveSupply4.75V<Vcc<5.25V.
SP48E and SP485E
Pinout(TopView)
Figure5.DriverPropagationDelays
+3V
0V
DI
A
B
DRIVER
OUTPUT
VO+
DIFFERENTIAL
OUTPUT
VA –VB
0V
VO
1.5V
tPLH
tF
tR
f ≥1MHz; tR≤1ns; tF ≤1ns
VO 1/2VO
1/2VO
tPHL
Figure1.RS-485DriverDCTestLoadCircuit
Figure3.RS-485Driver/ReceiverTimingTestCircuit
C
L1
15pF
RO
A
B
A
B
DI
C
L2
R
DIFF
500
CL
Output
Under
Test
S1
S2
VCC
1k
CRL
Receiver
Output
S1
S2
Test Point
VCC
Figure2.ReceiverTimingTestLoadCircuit
Figure4.RS-485DriverTimingTestLoad#2Circuit
A
B
R
VOD
VOC
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