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LTC4556EUF#PBF

更新时间： 2024-11-11 21:21:11
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
22页 260K
描述
LTC4556 - Smart Card Interface with Serial Control; Package: QFN; Pins: 24; Temperature Range: -40°C to 85°C

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中文翻译

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LTC4556EUF#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN,
针数：24Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.14可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：S-PQCC-N24
JESD-609代码：e3长度：4 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：24
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.8 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：1.7 V标称供电电压 (Vsup)：3.3 V
表面贴装：YES温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：4 mm
Base Number Matches：1

LTC4556EUF#PBF 数据手册

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LTC4556  
Smart Card Interface  
with Serial Control  
FeaTures  
DescripTion  
The LTC®4556 provides all necessary power control, level  
translation and supervisory functions for a smart card or  
S.A.M.cardinterface.Thepartcontainsalownoisecharge  
n
Electrical Specifications Are ISO7816-3 and EMV  
Compatible  
n
Control/Status Serial Port May be Daisy-Chained  
for Multicard Applications  
Automatic Shutdown on Electrical Faults  
pump plus LDO for generating V power, as well as all  
necessary level shifting circuitry.  
CC  
n
n
Buck Boost Charge Pump Generates 5V, 3V or 1.8V  
The card voltage can be set to either 1.8V, 3V or 5V. The  
LTC4556includesacarddetectionchannelwithautomatic  
debounce circuitry. To reduce wiring costs, the LTC4556  
interfaces to a microcontroller via a simple 4‑wire serial  
interface.Multipledevicesmaybeconnectedindaisy‑chain  
fashion so that the number of wires to the card socket  
board is independent of the number of sockets. Status  
data is returned over the same interface.  
Outputs (Smart Card Classes A, B and C)  
n
Automatic Level Translation  
n
Dynamic Pull‑Ups Deliver Fast Signal Rise Times  
n
Supervisory Functions Prevent Smart Card Faults  
n
Low Operating Current: 250µA Typical  
n
V : 2.7V to 5.5V  
IN  
n
n
n
Ultralow Shutdown Current  
>10kV ESD on Smart Card Pins  
Small 24‑Lead 4mm × 4mm QFN Package  
Extensive security features ensure proper deactivation  
sequencing in the event of a supply fault or a smart card  
electrical fault. The smart card pins can withstand greater  
than 10kV ESD in‑situ with no additional components.  
The LTC4556 is available in a small, low profile (0.75mm),  
4mm × 4mm QFN package.  
applicaTions  
n
Handheld Payment Terminals  
n
Pay Telephones  
n
ATM Machines  
POS Terminals  
Computer Keyboards  
Multiple S.A.M. Sockets  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property  
of their respective owners. Protected by U.S. Patents, including 6356140, 6411531.  
n
n
n
Typical applicaTion  
240k  
180k  
20  
Deactivation Sequence  
UNDERV  
1
19  
DV  
PRES  
CC  
10  
V
BATT  
INPUT  
POWER  
0.1µF  
1µF  
LTC4556  
18  
17  
16  
15  
14  
13  
RST  
8
6
C8  
C4  
GND  
5V/DIV  
I/O  
FAULT  
CLK  
5V/DIV  
RST  
CLK  
21  
22  
23  
24  
D
D
IN  
SMART CARD  
4-WIRE  
COMMAND  
INTERFACE  
V
CC  
OUT  
SCLK  
1µF  
I/O  
5V/DIV  
LD  
4556 TA01  
V
2
3
4
5
CC  
DATA  
5V/DIV  
4-WIRE  
CARD  
INTERFACE  
R
IN  
4556 G11.eps  
10µs/DIV  
SYNC  
ASYNC  
+
C
–
C
CPO  
11  
9
12  
1µF  
1µF  
4556fb  
1
For more information www.linear.com/LTC4556  
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中文翻译

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