MAX1840是Maxim美信半导体公司的一款电平转换器产品，MAX1840是低电压SIM/智能卡电平转换器，µMAX封装，本站介绍了MAX1840的封装应用图解、特点和优点、功能等，并给出了与MAX1840相关的Maxim元器件型号供参考。
MAX1840 - 低电压SIM/智能卡电平转换器，µMAX封装 - 电平转换器 - 低电压、高速、SIM/智能卡电平转换器 - 美信半导体
The MAX1840/MAX1841 subscriber identity module (SIM)/smart card level translators provide level shifting and electrostatic discharge (ESD) protection for SIM and smart card ports. These devices integrate two unidirectional level shifters for the reset and clock signals, a bidirectional level shifter for the serial data stream, and ±10kV ESD protection on all card contacts.
The MAX1840 includes a SHDN control input to aid insertion and removal of SIM and smart cards, while the MAX1841 includes a system-side data driver to support system controllers without open-drain outputs. The logic supply voltage range is +1.4V to +5.5V for the "controller side" and +1.7V to +5.5V for the "card side." Total supply current is 1.0µA. Both devices automatically shut down when either power supply is removed. For a complete SIM card interface, combine the MAX1840/MAX1841 with the MAX1686H 0V/3V/5V regulated charge pump.
The MAX1840/MAX1841 are available in ultra-small 10-pin µMAX packages that are only 1.09mm high and half the area of an 8-pin SO.
The MAX1840/MAX1841 are compliant with GSM test specifications 11.11 and 11.12.
