MAX1840, MAX1841 Low-Voltage SIM/Smart-Card Level Translators in µMAX

Description

The MAX1840/MAX1841 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 unidirectional level shifters for the reset and clock signals, a bidirectional level shifter for the serial data stream, and ±10kV ESD protection on all card contacts.

The MAX1840 includes a SHDN control input to aid insertion and removal of SIM and smart cards, while the MAX1841 includes a system-side data driver to support system controllers without open-drain outputs. The logic supply voltage range is +1.4V to +5.5V for the "controller side" and +1.7V to +5.5V for the "card side." Total supply current is 1.0µA. Both devices automatically shut down when either power supply is removed. For a complete SIM card interface, combine the MAX1840/MAX1841 with the MAX1686H 0V/3V/5V regulated charge pump.

The MAX1840/MAX1841 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 MAX1840/MAX1841 are compliant with GSM test specifications 11.11 and 11.12.

Key Features

Applications/Uses

SIM/Smart Card Level Shifting
+1.4V to +5.5V Controller Voltage Range
+1.7V to +5.5V Card Voltage Range
±10kV ESD Card Socket Protection
Allows Level Translation with DV_CC > V_CC or DV_CC < V_CC
Automatically Shuts Down When Either Supply Is Removed
Card Contacts Actively Pulled Low During Shutdown
1µA Total Quiescent Supply Current
0.01µA Total Shutdown Supply Current
Ultra-Small 10-Pin µMAX Package
Compliant with GSM Test Specifications 11.11 and 11.12

	Logic-Level Translation
	SIM Interface in GSM Cellular Telephones
	Smart Card Readers
	SPI™, QSPI™, and MICROWIRE™ Level Translation

Key Specifications: SIM/Smart Card Level Translators

Part Number

Logic-Side Voltage Range (V)

Card-Side Voltage Range (V)

Max. Quiescent I_CC (µA)

Level Shifters

Features

RoHS Available

Package

Operating Temp. Range (°C)

Price^**

MAX1840

1.4 to 5.5

1.7 to 5.5

3.5

1 Bidirectional
2 Unidirectional

•	10kV ESD Card Socket Protection

•	Bidirectional System-Side Data

•	GSM 11.11 & 11.12 Compliant

•	Shutdown Control

Yes

uMAX/10

-40 to +85

$1.55 @ 1k

MAX1841

•	10kV ESD Card Socket Protection

•	Bidirectional OR Separate System-Side Data

•	GSM 11.11 & 11.12 Compliant

$1.55 @ 1k

See All SIM/Smart Card Level Translators (4)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX1840

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1840EUB

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1840EUB-T

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1840EUB+

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1840EUB+T

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1841

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX1841EUB

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1841EUB-T

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10-2*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX1841EUB+

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX1841EUB+T

uMAX;10 pin;
Dwg: 21-0061L (PDF)
Use pkgcode/variation: U10+2*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

Related Products

MAX1740, MAX1741 SIM/Smart-Card Level Translators in µMAX
MAX1686, MAX1686H 3V to 5V Regulating Charge Pumps for SIM Cards