NXP Semiconductors NVT4555/56 SIM 卡接口电平转换器

NXPNVT4555/56 SIM 卡接口电平转换器用于将 SIM 卡与单个低压主机侧接口连接。每个器件都包含一个 LDO，能通过常见的 5.25V 移动电话电池提供两个不同电压：1.8V 或 2.95V；还包含三个电平转换器，在 SIM 卡和主微控制器间转换数据、RSTn 和 CLKn 信号。NVT4555 有一个电压选择引脚（CTRL），可选择 1.8V 或 2.95V 作为 SIM 卡的电源；还有一个高电平有效引脚（EN），用于启动正常工作。NVT4556 还可以使用 I2C 总线接口来启动正常工作，并选择 1.8V 或 3V 作为 SIM 卡电源。每个器件都符合所有 ETSI、IMT-2000 及 ISO-7816 SIM/智能卡接口要求。

The NXP Semiconductors NVT4555 and NVT4556 SIM Card Interface Level Translators are available in a compact 1.19mm x 1.62mm x 0.56mm WLCSP12 package and are Pb-free, RoHS compliant, and free of halogen and antimony.

特性

Support SIM card supply voltages:
- NVT4555: 1.8V and 2.95V
- NVT4556: 1.8V and 3V
Input voltage range to LDO: 2.5V to 5.25V
Host microcontroller operating voltage range:
- NVT4555: 1.1V to 3.6V
- NVT4556: 1.55V to 3.6V
Level translation of I/O, RSTn and CLKn between SIM card and host-side interface with capacitive isolation

Low current shutdown (EN = 0) mode:
- NVT4555 < 1µA
- NVT4556 < 3µA
Supports clock speed beyond 5MHz clock
Incorporates ISO-7816-3 shutdown feature for the SIM card signals
±8 kV IEC61000-4-2 ESD protected on all SIM card contact pins
Pb-free, Restriction of Hazardous Substances (RoHS) compliant and free of halogen and antimony (Dark Green compliant)
Available in 12-pin WLCSP package

应用

NVT4555 and NVT4556 can be used with a range of SIM card attached devices including:
- Mobile and personal phones
- Wireless modems
- SIM card terminals