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| 型号： | ISL3171EIBZ |
| 厂商： | Intersil |
| 文件页数： | 4/19页 |
| 文件大小： | 0K |
| 描述： | TXRX ESD 3.3V RS-485/422 8-SOIC |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 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： | 3 V ~ 3.6 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 |
| 产品目录页面： | 1240 (CN2011-ZH PDF) |
12
FN6307.5
June 8, 2012
Built-In Driver Overload Protection
As stated previously, the RS-485 spec requires that drivers
survive worst case bus contentions undamaged. These
devices meet this requirement via driver output short circuit
current limits, and on-chip thermal shutdown circuitry.
The driver output stages incorporate short circuit current
limiting circuitry which ensures that the output current never
exceeds the RS-485 spec, even at the common mode
voltage range extremes. Additionally, these devices utilize a
foldback circuit which reduces the short circuit current, and
thus the power dissipation, whenever the contending voltage
exceeds either supply.
In the event of a major short circuit condition, devices also
include a thermal shutdown feature that disables the drivers
whenever the die temperature becomes excessive. This
eliminates the power dissipation, allowing the die to cool. The
drivers automatically re-enable after the die temperature
drops about 15°. If the contention persists, the thermal
shutdown/re-enable cycle repeats until the fault is cleared.
Receivers stay operational during thermal shutdown.
Low Power Shutdown Mode
These CMOS transceivers all use a fraction of the power
required by their bipolar counterparts, but some also include
a shutdown feature that reduces the already low quiescent
ICC to a 10nA trickle. These devices enter shutdown
whenever the receiver and driver are simultaneously
disabled (RE =VCC and DE = GND) for a period of at least
600ns. Disabling both the driver and the receiver for less
than 50ns guarantees that the transceiver will not enter
shutdown.
Note that receiver and driver enable times increase when the
transceiver enables from shutdown. Refer to Notes 8 through
for more information.
Typical Performance Curves VCC = 3.3V, TA = +25°C; Unless Otherwise Specified
FIGURE 7. DRIVER OUTPUT CURRENT vs DIFFERENTIAL
OUTPUT VOLTAGE
FIGURE 8. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs
TEMPERATURE
FIGURE 9. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT
VOLTAGE
FIGURE 10. SUPPLY CURRENT vs TEMPERATURE
DIFFERENTIAL OUTPUT VOLTAGE (V)
DRIV
E
R
OUTPUT
CURRENT
(m
A)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
20
40
60
80
100
120
-40
0
50
85
TEMPERATURE (°C)
DIFFERE
N
T
IAL
OUT
P
UT
VOL
T
A
G
E
(V)
-25
25
75
RDIFF = 100Ω
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
RDIFF = 54Ω
OUTPUT VOLTAGE (V)
-7 -6
-4
-2
0
2
4
6
8
10
12
OUT
P
UT
CURRENT
(mA)
-50
0
50
100
150
200
-100
-150
Y OR Z = HIGH
Y OR Z = LOW
ISL317XE
ISL3170E THRU ISL3175E
ISL3176E/77E/78E
-40
0
50
85
TEMPERATURE (°C)
I CC
(mA)
-25
25
75
0.46
0.47
0.48
0.49
0.50
0.51
0.52
ISL3172E/75E/78E, DE = VCC, RE = X
ISL3170E/73E/76E, DE = X, RE = 0V; ISL3171E/74E/77E
ISL3172E/75E/78E, DE = 0V, RE = 0V
ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E,ISL3176E, ISL3177E, ISL3178E
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相关代理商/技术参数 |
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|---|---|
| ISL3171EIBZ-T | 功能描述:TXRX ESD 3.3V RS-485/422 8-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| ISL3171EIUZ | 功能描述:TXRX ESD 3.3V RS-485/422 8-MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 产品目录页面:1402 (CN2011-ZH PDF) |
| ISL3171EIUZ-T | 功能描述:TXRX ESD 3.3V RS-485/422 8-MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| ISL3172E | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:【15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers |
| ISL3172EIBZ | 功能描述:RS-422/RS-485 接口 IC 8LD -40+85 3V RS-485 1/2 DUP 115 RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
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