NXP TDA8034HN智能卡模拟接口解决方案
NXP 公司的TDA8034HN是高性价比的同步和异步智能卡模拟接口,工作电压5V,3V或1.8V,外接元件很少,在智能卡和微控制器间提供电源,保护和控制功能,主要用在付费电视,电子支付,身份识别和银行卡阅读器.本文介绍了TDA8034HN主要特性,方框图以及典型应用框图.
TDA8034HN Smart card interface
The TDA8034HN is a cost-effective analog interface for asynchronous and synchronous smart cards operating at 5 V, 3 V or 1.8 V. Using few external components, the
TDA8034HN provides all supply, protection and control functions between a smart card and the microcontroller.
TDA8034HN主要特性:
Integrated circuit smart card interface in an HVQFN24 package
5 V, 3 V or 1.8 V smart card supply
Very low power consumption in Deep Shutdown mode
Three protected half-duplex bidirectional buffered I/O lines (C4, C7 and C8)
VCC regulation:
5 V, 3 V or 1.8 V ± 5 % using two low ESR multilayer ceramic capacitors: one of 220 nF and one of 470 nF
current spikes of 40 nA/s (VCC = 5 V and 3 V) or 15 nA/s (VCC =1.8 V) up to 20 MHz, with controlled rise and fall times and filtered overload detection of approximately 120 mA
Thermal and short-circuit protection for all card contacts
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