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MAX1840EUB+T

P1-P3P4-P6P7-P8
MAX1840/MAX1841
Low-Voltage SIM/Smart Card
Level Translators in µMAX
_______________________________________________________________________________________ 7
0V/3V/5V for full compatibility with SIM/smart-card specifi-
cations. Figure 2 shows the charge pump for SIM card
applications. Alternatively, the MAX619 generates a regu-
lated 5V from input voltages as low as 2V.
SPI/QSPI/MICROWIRE Interface
The MAX1840/MAX1841 are also useful as 3V/5V level
shifters in SPI, QSPI, and MICROWIRE applications
(Figure 3). On the slave side, connect CLK to SCLK,
RST to CS, and IO to DOUT and DIN. The unidirectional
level shifters transfer chip select and clock signals to
the slave device(s), while the bidirectional level shifter
transfers data.
___________________Chip Information
TRANSISTOR COUNT: 211
V
CC
SIM OR
SMART
CARD
SYSTEM
CONTROLLER
CLK
RST
IO
GND GND
IO
CLK
RST
OUT
GND
PGND
GND
V
CC
DV
CC
DV
CC
+3.0V
3.0V OR 5.0V
MAX1840
MAX1841
MAX1686
MAX1686H
SHDN*
SHDN
3/5
OPTIONAL
RIN
IN
CXN CXP
CIN
OPTIONAL
DATA
DDRV*
SHDN FOR MAX1840 ONLY;
DDRV FOR MAX1841 ONLY.
*
Figure 2. Using MAX1840/MAX1841 and MAX1686/MAX1686H
Charge Pump for SIM Card Applications
V
CC
SPI/QSPI/
MICROWIRE
SYSTEM
SYSTEM
CONTROLLER
SCLK
CS
DOUT
DIN
GND GND
IO
CLK
RST
OUT
SET
PGND
GND
V
CC
DV
CC
DV
CC
+5.0V
+3.3V
MAX1840
MAX1841
MAX8867
MAX8860
SHDN*
SHDN
OPTIONAL
RIN
IN
CIN
OPTIONAL
DATA
DDRV*
SHDN FOR MAX1840 ONLY;
DDRV FOR MAX1841 ONLY.
*
Figure 3. MAX1840/MAX1841 with SPI/QSPI/MICROWIRE
Interfaces
MAX1840/MAX1841
Low-Voltage SIM/Smart Card
Level Translators in µMAX
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Note: The MAX1840/MAX1841 do not have an exposed pad.
Packaging Information
10LUMAX.EPS
Typical Application Circuit
V
CC
SIM OR
SMART CARD
SYSTEM
CONTROLLER
CLK
RST
1µF
GND
GND
CLK
RST
GND
V
CC
DV
CC
DV
CC
MAX1840
MAX1841
SHDN*
OPTIONAL
RIN
CIN
20k 10k
OPTIONAL
DATA
DDRV*
SHDN FOR MAX1840 ONLY;
DDRV FOR MAX1841 ONLY.
*
SHUTDOWN
CONTROL
IO
IO
1µF
DV
CC
V
CC
P1-P3P4-P6P7-P8

MAX1840EUB+T

Mfr. #:
Buy MAX1840EUB+T
Manufacturer:
Maxim Integrated
Description:
Translation - Voltage Levels SIM/Smart-Card Level Translator
Lifecycle:
New from this manufacturer.
Delivery:
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