MAX1740 Maxim, MAX1740 Datasheet
MAX1740
Manufacturer Part Number
MAX1740
Description
SIM/Smart Card Level Translators in MAX
Manufacturer
Maxim
Datasheet
1.MAX1740.pdf
(12 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX17401GTJ+TG40
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX1740EUB
Manufacturer:
MAXIM/美信
Quantity:
20 000
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.
19-1458; Rev 0; 1/00
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.
SIM Interface in GSM Cellular Telephones
Smart Card Readers
Logic Level Translation
SPI™/QSPI™/MICROWIRE™ Level Translation
CONTROLLER
SYSTEM
DV
GND
CC
OPTIONAL
OPTIONAL
DV
Typical Operating Circuit
CC
________________________________________________________________ Maxim Integrated Products
*
DV
RIN
CIN
DATA
SHDN*
DDRV*
SHDN FOR MAX1740 ONLY
DDRV FOR MAX1741 ONLY
General Description
CC
MAX1740
MAX1741
CLK
GND
RST
V
IO
CC
SIM/Smart Card Level Translators
Applications
V
CC
IO
GND
V
CLK
RST
CC
SIM OR
SMART
CARD
o SIM/Smart Card Level Shifting
o ±10kV ESD Card Socket Protection
o Allows Level Translation with DV
o Automatically Shuts Down When Either Supply Is
o Card Contacts Actively Pulled Low During
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
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX1740EUB
MAX1741EUB
DV
Removed
Shutdown
and 11.12
( ) ARE FOR MAX1741.
CC
PART
TOP VIEW
≤ V
SHDN (DDRV)
CC
DATA
DV
CIN
RIN
CC
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
1
2
3
4
5
Ordering Information
MAX1740
MAX1741
µMAX
Pin Configuration
in µMAX
10
8
6
9
7
CC
10 µMAX
10 µMAX
PIN-PACKAGE
IO
V
CLK
RST
GND
CC
≥ V
Features
CC
or
1
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