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参数资料
| 型号： | MAX3189EUT-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC TX RS232 1MBPS 1UA SOT23-6 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 发射器 |
| 驱动器/接收器数： | 1/0 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 6 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) |
Detailed Description
The transmitter is an inverting level translator that
converts CMOS-logic levels to 5V EIA/TIA-232 levels.
The MAX3188 guarantees a 250kbps data rate, and the
MAX3189 guarantees a 1Mbps data rate with worst-case
loads of 3k
in parallel with 1000pF. The transmitter
input does not have a pull-up resistor and should be
connected to GND if unused.
Shutdown
The MAX3188/MAX3189 feature a shutdown input.
Drive SHDN low to reduce the supply current to 1A
(max). Shutdown also forces TOUT into a high-
impedance state that allows the signal line to be safely
controlled by other transmitters. Drive SHDN high for
normal operation.
Power-Supply Decoupling
In most circumstances, 0.1F bypass capacitors are
adequate for power-supply decoupling. Connect the
bypass capacitors as close to the IC as possible.
Applications Information
Power-Supply Sources
The MAX3188/MAX3189 require ±4.5V to ±6V dual
supplies. For applications where these supply voltages
are not present, a DC-DC converter must be added.
Due to the devices’ low current consumption, a charge
pump can provide the proper supply voltages and
requires a minimal amount of board space and cost.
When using another RS-232 device containing an internal
regulated charge pump (Table 1), the MAX3188/
MAX3189 may be powered from the internal charge
pump (Figure 2). This eliminates the need for additional
external DC-DC converters to generate the required
±4.5V to ±6V dual supplies.
MAX3188/MAX3189
1Mbps, 1A RS-232 Transmitters in SOT23-6
4
_______________________________________________________________________________________
Pin Description
Negative Supply Voltage
VEE
5
Positive Supply Voltage
VCC
6
RS-232 Transmitter Output
TOUT
4
TTL/CMOS Transmitter Input
TIN
3
PIN
Ground
GND
2
Active-Low Shutdown. Pull low to reduce the supply current and to force TOUT into a high-impedance state.
SHDN
1
FUNCTION
NAME
50%
tPLH
tPHL
+5V
-5V
TOUT
TIN
VIH
VIL
Figure 1. Transmitter Propagation-Delay Timing
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| MAX318C/D | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX318CJA | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX318CPA | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX318CPA+ | 功能描述:模拟开关 IC Precision SPST NO CMOS RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX318CSA | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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