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參數資料
| 型號： | MAX1741EUB+T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 其它接口 |
| 英文描述： | SIM/Smart-Card Level Translators in µMAX |
| 中文描述： | SPECIALTY INTERFACE CIRCUIT, PDSO10 |
| 封裝： | 1.09 MM HEIGHT, ULTRA SMALL, EXPOSED PAD, MICRO MAX PACKAGE-10 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 327K |
| 代理商： | MAX1741EUB+T |
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 2.5A 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 MAX 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 2.5A (max) Total Quiescent Supply Current
o 0.01A Total Shutdown Supply Current
o Ultra-Small 10-Pin MAX Package
o Compliant with GSM Test Specifications 11.11
and 11.12
MAX1740/MAX1741
SIM/Smart Card Level Translators
in MAX
________________________________________________________________ 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
MAX
TOP VIEW
VCC
SIM OR
SMART
CARD
SYSTEM
CONTROLLER
CLK
IO
GND
IO
CLK
GND
VCC
DVCC
MAX1740
MAX1741
SHDN*
OPTIONAL
RIN
CIN
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
TEMP. RANGE
PIN-PACKAGE
10 MAX
Pin Configuration
Ordering Information
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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