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MAX1741 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # MAX1741
Description  SIM/Smart Card Level Translators in uMAX
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1741 Datasheet(HTML) 1 Page - Maxim Integrated Products

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For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Description
The MAX1740/MAX1741 subscriber identity module
(SIM)/smart card level translators provide level shifting
and electrostatic discharge (ESD) protection for SIM and
smart card ports. These devices integrate two unidirec-
tional level shifters for the reset and clock signals, a bidi-
rectional level shifter for the serial data stream, and
±10kV ESD protection on all card contacts.
The MAX1740 includes a SHDN control input to aid
insertion and removal of SIM and smart cards, while the
MAX1741 includes a system-side data driver to support
system controllers without open-drain outputs. The logic
supply voltage range is +1.425V to +5.5V for the “con-
troller side” and +2.25V to +5.5V for the “card side.”
Total supply current is 2.5µA max. Both devices automat-
ically shut down when either power supply is removed.
For a complete SIM-card interface, combine the
MAX1740/MAX1741 with the MAX1686H 0V/3V/5V regu-
lated charge pump.
The MAX1740/MAX1741 are available in ultra-small 10-
pin µMAX packages that are only 1.09mm high and half
the area of an 8-pin SO.
The MAX1740/MAX1741 are compliant with GSM test
specifications 11.11 and 11.12.
Applications
SIM Interface in GSM Cellular Telephones
Smart Card Readers
Logic Level Translation
SPI™/QSPI™/MICROWIRE™ Level Translation
Features
o SIM/Smart Card Level Shifting
o ±10kV ESD Card Socket Protection
o Allows Level Translation with DVCC ≥ VCC or
DVCC
≤ VCC
o Automatically Shuts Down When Either Supply Is
Removed
o Card Contacts Actively Pulled Low During
Shutdown
o +1.425V to +5.5V Controller Voltage Range
o +2.25V to +5.5V Card Voltage Range
o 2.5µA (max) Total Quiescent Supply Current
o 0.01µA Total Shutdown Supply Current
o Ultra-Small 10-Pin µMAX Package
o Compliant with GSM Test Specifications 11.11
and 11.12
SIM/Smart Card Level Translators
in µMAX
________________________________________________________________ Maxim Integrated Products
1
IO
1
DATA
2
3
4
5
9
8
7
6
VCC
CLK
RST
GND
SHDN (DDRV)
( ) ARE FOR MAX1741.
RIN
CIN
DVCC
10
MAX1740
MAX1741
µMAX
TOP VIEW
VCC
SIM OR
SMART
CARD
SYSTEM
CONTROLLER
CLK
IO
GND
GND
IO
CLK
GND
VCC
DVCC
DVCC
MAX1740
MAX1741
SHDN*
OPTIONAL
RIN
CIN
RST
RST
OPTIONAL
DATA
DDRV*
SHDN FOR MAX1740 ONLY
DDRV FOR MAX1741 ONLY
*
DVCC
VCC
Typical Operating Circuit
19-1458; Rev 0; 1/00
PART
MAX1740EUB
MAX1741EUB
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
10 µMAX
10 µMAX
Pin Configuration
Ordering Information
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.


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