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| 型号： | MAX3284EAUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC RS485/422 RECEIVER SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 接收器 |
| 驱动器/接收器数： | 0/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
7
Maxim Integrated
MAX3280E/MAX3281E/
MAX3283E/MAX3284E
±15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23
RS-485/RS-422 True Fail-Safe Receivers
provide the same clock to their respective circuits.
Thus, minimal package-to-package skew is critical. The
skew must be kept well below the period of the clock
signal to ensure that all of the circuits on the network
are synchronized.
128 Receivers on the Bus
The standard RS-485 input impedance is 12k
(one-
unit load). The standard RS-485 transmitter can drive
32 unit loads. The MAX3280E/MAX3281E/MAX3283E/
MAX3284E present a 1/4-unit-load input impedance
(48k
), which allows up to 128 receivers on the bus.
Any combination of these RS-485 receivers with a total
of 32 unit loads can be connected to the same bus.
Thermal Protection
The MAX3280E/MAX3281E/MAX3283E/MAX3284E fea-
ture thermal protection. Thermal protection sets the out-
put stage in high-impedance mode when a short circuit
occurs at the output, limiting both the power dissipation
and temperature. The thermal temperature threshold is
+165°C, with a hysteresis of 20°C.
Test Circuits/Timing Diagrams
VOH
VOL
A
B
1V
RO
-1V
fIN = 1MHz
tr, tf
≤ 3ns
OUTPUT
INPUT
VCC/2
tPHL
tPLH
Figure 1. Receiver Propagation Delay
tPRZH
OUT
EN
OUT
EN
VCC/2
VCC
0
VOH
0
VCC
0
VOH
0
FOR MAX3281E THE ENABLE SIGNAL IS INVERTED.
S1 OPEN
S2 CLOSED
S3 = 1.5V
S1 OPEN
S2 CLOSED
S3 = 1.5V
0.25V
tPRHZ
tPRLZ
VCC/2
0.25V
OUT
EN
OUT
EN
VCC
0
VCC
VOL
VCC
0
VCC
VOL
S1 CLOSED
S2 OPEN
S3 = -1.5V
S1 CLOSED
S2 OPEN
S3 = -1.5V
tPRZL
VCC/2
GENERATOR
1.5V
-1.5V
VID
R
CL
1k
S1
VCC
S2
50
S3
VCC/2
Figure 2. MAX3281E/MAX3283E Receiver Enable/Disable Timing
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相关代理商/技术参数 |
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| MAX3286C/D | 功能描述:激光驱动器 DICE SALES DICE RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3286C/D-B1H WAF | 制造商:Maxim Integrated Products 功能描述: |
| MAX3286CGI | 功能描述:激光驱动器 NULL RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3286CGI-T | 功能描述:激光驱动器 NULL RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
| MAX3286CHJ | 功能描述:激光驱动器 3.0V to 5.5V 1.25Gbps/2.5Gbps LAN 激光驱动器 RoHS:否 制造商:Micrel 数据速率:4.25 Gbps 工作电源电压:3 V to 3.6 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:QFN-16 封装:Tube |
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