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TDA8025HN 数据表(PDF) 1 Page - NXP Semiconductors

部件名 TDA8025HN
功能描述  IC card interface
Download  38 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

TDA8025HN 数据表(HTML) 1 Page - NXP Semiconductors

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1.
General description
The TDA8025 is a cost-effective analog interface for asynchronous smart cards operating
at 3 V, 1.8 V or optionally, 1.2 V. Using few external components, the TDA8025 provides
integrated supply, protection and control functions for a range of applications.
2.
Features
I Integrated circuit smart card interface
I 3 V, 1.8 V or 1.2 V smart card supply
I Low power consumption in inactive mode
I Three protected, half duplex, bidirectional buffered input/output lines (C4, C7 and C8)
I VCC regulation:
N 3 V, 1.8 V or optionally 1.2 V at ± 5 % using one 220 nF and one 470 nF low ESR
multilayer ceramic capacitor.
N Current pulse handling for pulses of 40 nAs at VCC = 3 V, 15 nAs at VCC = 1.8 V or
VCC = 1.2 V up to 20 MHz
I Thermal and short-circuit protection for all card contacts
I Automatic activation and deactivation sequences triggered by short-circuit, card
take-off, overheating, falling VDD(INTF) and VDD(INTREGD)
I Enhanced card-side ElectroStatic Discharge (ESD) protection of > 6 kV
I Clock signal using the internal oscillator or an external crystal (≤ 26 MHz) connected to
pin XTAL1
I Card clock generation up to 20 MHz with synchronous frequency changes of fxtal,
1
2 fxtal,
1
4 fxtal or
1
8 fxtal using pins CLKDIV1 and CLKDIV2
I Non-inverted control of pin RST using pin RSTIN
I NDS certified
I Supply supervisors during power on and off:
N VDD(INTREGD) using a fixed threshold
N VDD(INTF) using resistor bridge threshold adjustment
I Built-in debouncing on card presence contacts (typically 4.5 ms)
I Multiplexed status signal using pin OFFN
3.
Applications
I Pay TV
I Electronic payment
I Identification
I Bank card readers
TDA8025
IC card interface
Rev. 01 — 6 April 2009
Product data sheet


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