DS8314-RJX+

更新时间： 2024-11-29 13:07:27

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美信 - MAXIM		/
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数据手册

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DS8314-RJX+ 数据手册

19-4655; Rev 1; 5/09

Smart Card Interface

/DS8314

General Description

Features

The DS8313 smart card and SIM interface IC is a low-

cost, analog front-end for a smart card reader designed

for smart card applications that do not require the use

of the auxiliary card I/O contacts C4 and C8 (AUX1 and

AUX2). The DS8313 supports 5V, 3V, and 1.8V smart

cards. The absence of a charge pump reduces active

power consumption, and the DS8313 also supports an

ultra-low-power 10nA stop mode.

♦ Analog Interface and Level Shifting for IC Card

Communication

♦ ±±8k ꢀminꢁ ꢂSꢃ ꢀ(HBꢁ ꢄrotection on Card Interfaceꢅ

♦ Ultra-Low Stop-Bode Current, Leꢅꢅ Than 10nA

Typical

♦ Internal IC Card Supply-koltage Generation

5.0k ±5ꢆ, ±0mA ꢀmaꢇꢁ

The DS8313 is designed to interface between a system

microcontroller and the smart card interface, providing

all power supply, protection, and level shifting required

for IC card applications.

3.0k ±±ꢆ, ꢈ5mA ꢀmaꢇꢁ

1.±k ±10ꢆ, 30mA ꢀmaꢇꢁ

♦ Automatic Card Activation and ꢃeactivation

The DS8314 is similar to the DS8313, but only uses one

analog (smart card) power supply. Therefore, the

device has reduced ability to provide power to smart

cards, but it is still sufficient for many applications,

allowing the DS8314 to drop into many TDA8024 sock-

ets without hardware changes.

Controlled by ꢃedicated Internal Sequencer

♦ I/O Lineꢅ from (oꢅt ꢃirectly Level Shifted for

Smart Card Communication

♦ Fleꢇible Card Cloc8 Generation, Supporting

ꢂꢇternal Cryꢅtal Frequency ꢃivided by 1, 2, 4, or ±

The DS8313L and DS8314L use a negative polarity-pres-

ence detect instead of the default positive-polarity detect.

Both devices are available in a 28-pin SO package.

♦ (igh-Current, Short-Circuit and (igh-Temperature

ꢄrotection

♦ Low Active-Bode Current

Applications

Pay/Premium Television

Access Control

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

28 SO

Banking Applications

DS8313-RRX+

DS8313L-RRX+*

DS8314-RRX+*

DS8314L-RRX+*

28 SO

POS Terminals

28 SO

Debit/Credit Payment Terminals

PIN Pads

28 SO

Note: Contact the factory for availability of other variants and

package options.

+Denotes a lead(Pb)-free/RoHS-compliant package.

*Future product—contact factory for availability.

Automated Teller Machines

Telecommunications

Typical Application Circuit, ꢄin Configuration, and Selector

Guide appear at end of data ꢅheet.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device may be

simultaneously available through various sales channels. For information about device errata, go to: www.maꢇim-ic.com/errata.

________________________________________________________________ Baꢇim Integrated ꢄroductꢅ

For pricing, delivery, and ordering information, pleaꢅe contact Baꢇim ꢃirect at 1-±±±-ꢈ29-4ꢈ42,

or viꢅit Baꢇim’ꢅ webꢅite at www.maꢇim-ic.com.

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