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LTC1756EGN Datasheet

  • LTC1756EGN

  • Smart Card Interface

  • 12頁

  • LINER

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Final Electrical Specifications
LTC1756
Smart Card Interface
February 2000
FEATURES
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DESCRIPTION
The LTC
廬
1756 universal Smart Card interface is fully
compliant with ISO 7816-3 and EMV specifications. It
provides the smallest and simplest interface circuit be-
tween a host microcontroller and general purpose Smart
Cards.
An internal charge pump DC/DC converter delivers regu-
lated 3V or 5V to the Smart Card, while an on-chip level
shifter allows a connection to a low voltage controller. All
Smart Card contacts are rated for 10kV ESD, eliminating
the need for external ESD protection devices.
Input voltage may range from 2.7V to 5.5V, allowing direct
connection to a battery. Automatic DC/DC converter soft
start mitigates start-up problems that may result when the
input power is provided by another regulator.
Battery life is maximized by 75碌A(chǔ) operating current and
2碌A(chǔ) shutdown current. The 16-pin SSOP package mini-
mizes PCB area for compact portable systems.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Fully ISO 7816-3 and EMV Compliant
Buck-Boost Charge Pump Generates 3V or 5V
2.7V to 5.5V Input Voltage Range
3V
鈫?/div>
5V Signal Level Translator
> 10kV ESD on All Smart Card Pins
Dynamic Pull-Ups Deliver Fast Signal Rise Times
Soft Start Limits Inrush Current at Turn On
Very Low Operating Current: 75碌A(chǔ)
Shutdown Current: < 2.5碌A(chǔ)
Short-Circuit and Overtemperature Protected
Available in 16-Pin SSOP Package
APPLICATIONS
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Handheld Payment Terminals
Pay Telephones
ATMs
Key Chain Readers
Smart Card Readers
TYPICAL APPLICATION
3.3V
SMART CARD
PRESENT SWITCH
1
2
3
C3
10碌F
C2
10碌F
4
5
6
7
8
PRES
PWR
GND
V
IN
5V/3V
CARD
READY
C
鈥?/div>
16
15
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13
12
11
10
9
1756 TA01
N.O.
GND
LTC1756
V
CC
I/O
RST
CLK
C
+
DATA
RIN
CIN
V
CC
I/O
SMART CARD
RST
CLK
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
U
U
C1
0.68碌F
碌CONTROLLER
1

LTC1756EGN 產(chǎn)品屬性

  • LTC1755-56

  • 100

  • 集成電路 (IC)

  • 接口 - 專用

  • -

  • 智能卡

  • -

  • 2.7 V ~ 6 V

  • 16-SSOP（0.154"，3.90mm 寬）

  • 16-SSOP

  • 管件

  • 表面貼裝

  • Q1274157

LTC1756EGN相關(guān)型號PDF文件下載

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    Programmable Micropower Hex Translator/ Receiver/Driver
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    “Inductorless” 5V to + 5V Converter
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    “Inductorless” 5V to + 5V Converter
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    Dual Micropower Chopper Stabilized Operational Amplifier wit...
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