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參數(shù)資料
| 型號： | DS8313-RRX+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 17/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC INTERFACE SMART CARD 28-SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 243 |
| 應用： | 智能卡 |
| 接口： | 模擬 |
| 電源電壓： | 2.7 V ~ 6 V |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 28-SOIC W |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
DS8313/DS8314
Smart Card Interface
8
_______________________________________________________________________________________
Detailed Description
The DS8313 is an analog front-end for communicating
with 1.8V, 3V, and 5V smart cards. It is a dual input-
voltage device, requiring one supply to match that of a
host microcontroller and a separate +5V supply for
generating correct smart card supply voltages. The
DS8313 translates all communication lines to the cor-
rect voltage level and provides power for smart card
operation. It is a low-power device, consuming very lit-
tle current in active-mode operation (during a smart
card communication session), and is suitable for use in
battery-powered devices such as laptops and PDAs,
consuming only 10nA in stop mode. The DS8313 is
designed for applications that do not require communi-
cation using the C4 and C8 card contacts (AUX1 and
AUX2). It is suitable for SIM/SAM interfacing, as well as
for applications where only the I/O line is used to com-
municate with a smart card.
The DS8314 is nearly identical to the DS8313, but only
uses one VDDA input; therefore, it has reduced capaci-
ty to deliver current to 5V smart cards. However, the
DS8314 can drop into many existing TDA8024 applica-
tions with minimal or no hardware changes. See Figure
1 for a functional diagram.
Power Supply
The DS8313/DS8314 are dual-supply devices. The sup-
ply pins for the devices are VDD, GND, and VDDA. VDD
should be in the 2.7V to 6.0V range, and is the supply
for signals that interface with the host controller. It
should, therefore, be the same supply as used by the
host controller. All smart card contacts remain inactive
during power-on or power-off. The internal circuits are
kept in the reset state until VDD reaches VTH2 + VHYS2
and for the duration of the internal power-on reset
pulse, tW. A deactivation sequence is executed when
VDD falls below VTH2.
An internal regulator generates the 1.8V, 3V, or 5V card
supply voltage (VCC). The regulator should be supplied
separately by VDDA. VDDA should be connected to a
minimum 4.75V supply to provide the correct supply
voltage for 5V smart cards.
TEMPERATURE
MONITOR
CARD VOLTAGE
GENERATOR
CLOCK
GENERATION
CONTROL
SEQUENCER
POWER-SUPPLY
SUPERVISOR
I/O TRANSCEIVER
VDD
GND
*USED ONLY ON THE DS8313.
VDDA
VDDA*
VCC
XTAL1
XTAL2
CLKDIV1
CLKDIV2
1_8V
RSTIN
CGND
RST
CLK
I/O
PRES
OFF
5V/3V
CMDVCC
I/OIN
DS8313
DS8314
Figure 1. Functional Diagram
VDD
ALARM
(INTERNAL SIGNAL)
POWER ON
tW
POWER OFF
VTH2 + VHYS2
VTH2
SUPPLY DROPOUT
Figure 2. Voltage Supervisor Behavior
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS8313-RRX+ | 功能描述:接口 - 專用 Smart Card Interface RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS8314 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Smart Card Interface |
| DS8314L-RRX+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Smart Card Interface |
| DS8314-RRX+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Smart Card Interface |
| DS833 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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