http://www.www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




Linear Technology Electronic Components Datasheet

LTC1756 Datasheet

Smart Card Interface

No Preview Available !

LTC1756 pdf
FEATURES
s Fully ISO 7816-3 and EMV Compliant
(Including Auxiliary I/O Pins)
s Buck-Boost Charge Pump Generates 3V or 5V
s 2.7V to 6.0V Input Voltage Range (LTC1755)
s Very Low Operating Current: 60µA
s > 10kV ESD on All Smart Card Pins
s Dynamic Pull-Ups Deliver Fast Signal Rise Times
s Soft-Start Limits Inrush Current at Turn On
s 3V 5V Signal Level Translators
s Shutdown Current: < 1µA
s Short-Circuit and Overtemperature Protected
s Alarm Output Indicates Fault Condition
s Multiple Devices May Be Paralleled for
Multicard Applications (LTC1755)
s Available in 16- and 24-Pin SSOP Packages
U
APPLICATIO S
s Handheld Payment Terminals
s Pay Telephones
s ATMs
s Key Chain Readers
s Smart Card Readers
LTC1755/LTC1756
Smart Card Interface
DESCRIPTIO
The LTC®1755/LTC1756 universal Smart Card interfaces
are fully compliant with ISO 7816-3 and EMV specifica-
tions. The parts provide the smallest and simplest inter-
face circuits between 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 on-chip level
shifters allow 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 6.0V, allowing direct
connection to a battery. Internal soft-start mitigates start-
up problems that may result when the input power is
provided by another regulator. Multiple devices may be
paralleled and connected to a single controller for multicard
applications.
Battery life is maximized by 60µA operating current and
1µA shutdown current. The narrow SSOP packages mini-
mize PCB area for compact portable systems.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
SMART CARD
PRESENT SWITCH
C3
10µF
GND VCC
AUX1
SMART CARD
AUX2
I/O
RST
CLK
3.3V
C2
10µF
1
PRES
5V/3V
2
PWR
CARD
3
CS
ALARM
4
NC/NO READY
5
GND DVCC
6 VIN LTC1755 C
7
VCC
C+
8
AUX1 AUX1IN
9
AUX2 AUX2IN
10
I/O
DATA
11
RST
RIN
12
CLK
CIN
24
23
22
21
20
19
18
17
16
15
14
13
C1
0.68µF
µCONTROLLER
17556 TA01
1


Linear Technology Electronic Components Datasheet

LTC1756 Datasheet

Smart Card Interface

No Preview Available !

LTC1756 pdf
LTC1755/LTC1756
ABSOLUTE AXI U RATI GS (Note 1)
VIN to GND (LTC1755) ............................. – 0.3V to 6.5V
VIN to GND (LTC1756) ............................. – 0.3V to 6.0V
DVCC to GND (LTC1755) .......................... – 0.3V to 5.5V
VCC to GND .............................................. – 0.3V to 5.5V
Digital Inputs to GND
(LTC1755) .............................. – 0.3V to DVCC + 0.3V
Digital Inputs to GND
(LTC1756) ................................. – 0.3V to VIN + 0.3V
CLK, RST, I/O, AUX1,
AUX2 to GND .............................. – 0.3V to VCC + 0.3V
VCC Short-Circuit Duration ............................... Indefinite
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
PRES 1
PWR 2
CS 3
NC/NO 4
GND 5
VIN
VCC
AUX1
6
7
8
AUX2 9
I/O 10
RST 11
CLK 12
24 5V/3V
23 CARD
22 ALARM
21 READY
20 DVCC
19 C
18 C +
17 AUX1IN
16 AUX2IN
15 DATA
14 RIN
13 CIN
ORDER PART
NUMBER
LTC1755EGN
GN PACKAGE
24-LEAD NARROW PLASTIC SSOP
TJMAX = 125°C, θJA = 150°C/W
Consult factory for Industrial and Military grade parts.
TOP VIEW
PRES 1
PWR 2
GND 3
VIN 4
VCC 5
I/O 6
RST 7
CLK 8
16 5V/3V
15 CARD
14 READY
13 C
12 C+
11 DATA
10 RIN
9 CIN
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
TJMAX = 125°C, θJA = 135°C/W
ORDER PART
NUMBER
LTC1756EGN
PART MARKING
1756
2


Part Number LTC1756
Description Smart Card Interface
Maker Linear Technology
Total Page 16 Pages
PDF Download
LTC1756 pdf
Download PDF File
LTC1756 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 LTC1750 14-Bit 80Msps Wide Bandwidth ADC Linear Technology
Linear Technology
LTC1750 pdf
2 LTC1751 Micropower/ Regulated Charge Pump DC/DC Converters Linear Technology
Linear Technology
LTC1751 pdf
3 LTC1751-3.3 Micropower/ Regulated Charge Pump DC/DC Converters Linear Technology
Linear Technology
LTC1751-3.3 pdf
4 LTC1751-5 Micropower/ Regulated Charge Pump DC/DC Converters Linear Technology
Linear Technology
LTC1751-5 pdf
5 LTC1753 5-Bit Programmable Synchronous Switching Regulator Controller for Pentium III Processor Linear Technology
Linear Technology
LTC1753 pdf
6 LTC1754-3.3 Micropower/ Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23 Linear Technology
Linear Technology
LTC1754-3.3 pdf
7 LTC1754-5 Micropower/ Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23 Linear Technology
Linear Technology
LTC1754-5 pdf
8 LTC1755 Smart Card Interface Linear Technology
Linear Technology
LTC1755 pdf
9 LTC1756 Smart Card Interface Linear Technology
Linear Technology
LTC1756 pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components