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参数资料
| 型号： | SP491EN-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 7/10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) |
6
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-707 www.exar.com
SP490,49_0_0627
T
MINtoTMAXandVCC=5V±5%unlessotherwisenoted.
PARAMETERS
MIN.
TYP.
MAX. UNITS CONDITIONS
SP491RECEIVER
DCCharacteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V ≤ V
CM ≤ 12V
Input Hysteresis
70
mV
V
CM = 0V
Output Voltage High
3.5
Volts
I
O = -4mA, VID = +200mV
Output Voltage Low
0.4
Volts
I
O = +4mA, VID = -200mV
Three State (high impedance)
Output Current
±1
A
0.4V ≤ V
O ≤ 2.4V; REB = 5V
Input Resistance
12
15
k
-7V ≤ V
CM ≤ 12V
Input Current (A, B); V
IN = 2V
±.0
mA
DE = 0V, V
CC = 0V or 5.25V, VIN = 2V
Input Current (A, B); V
IN = -7V
-0.8
mA
DE = 0V, V
CC = 0V or 5.25V, VIN = -7V
Short-Circuit Current
85
mA
0V ≤ V
O ≤ VCC
SP491RECEIVER
ACCharacteristics
Maximum Data Rate
5
Mbps
REB = 0V
Receiver Input to Output
20
45
50
ns
t
PLH; RDIFF = 54,
C
L = CL2 = 00pF; Figures 3 & 8
Receiver Input to Output
20
45
50
ns
t
PHL; RDIFF = 54,
C
L = CL2
=
00pF; Figures 3 & 8
Diff. Receiver Skew It
PLH-tPHLI
3
ns
R
DIFF = 54; CL = CL2 = 00pF;
Figures 3 & 8
Receiver Enable to Output Low
45
70
ns
C
RL = 5pF; Figures 2 and 9; S closed
Receiver Enable to Output High
45
70
ns
C
RL = 5pF; Figures 2 and 9; S2 closed
Receiver Disable from Low
45
70
ns
C
RL = 5pF; Figures 2 and 9; S closed
Receiver Disable from High
45
70
ns
C
RL = 5pF; Figures 2 and 9; S2 closed
POWERREQUIREMENTS
Supply Voltage
+4.75
+5.25 Volts
Supply Current
900
A
REB, D = 0V or V
CC; DE = VCC
SP491ENVIRONMENTAL
ANDMECHANICAL
Operating Temperature
Commercial (C_)
0
+70
°C
Industrial (E_)
-40
+85
°C
Storage Temperature
-65
+50 °C
Package
Plastic DIP (_S)
NSOIC (_N)
Figure 9. Receiver Enable and Disable Times
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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