Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - customised uMAX 10

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 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 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 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 sup-

ply current is 1.0µA. Both devices automatically shut

down when either power supply is removed. For a com-

plete 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.

Applications

SIM Interface in GSM Cellular Telephones

Smart Card Readers

Logic Level Translation

SPI™/QSPI™/MICROWIRE™ Level Translation

Features

♦ 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

≥ V

≤ V

♦ 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

MAX1840/MAX1841

Low-Voltage SIM/Smart Card

Level Translators in µMAX

________________________________________________________________ Maxim Integrated Products 1

IO1DATA

CLK

RST

GNDSHDN (DDRV)

( ) ARE FOR MAX1841.

RIN

CIN

MAX1840

MAX1841

µMAX

TOP VIEW

SIM OR

SMART

CARD

SYSTEM

CONTROLLER

CLK

GND GND

CLK

GND

MAX1840

MAX1841

SHDN*

OPTIONAL

RIN

CIN

RSTRST

OPTIONAL

DATA

DDRV*

SHDN FOR MAX1840 ONLY;

DDRV FOR MAX1841 ONLY.

Typical Operating Circuit

19-1716; Rev 0; 4/00

PART

MAX1840EUB

MAX1841EUB

-40°C to +85°C

TEMP. RANGE PIN-PACKAGE

10 µMAX

Pin Configuration

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

Summary of content (8 pages)

PAGE 1
9-1716; Rev 0; 4/00 Low-Voltage SIM/Smart Card Level Translators in µMAX Features ♦ 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 DVCC ≥ VCC or DVCC ≤ VCC ♦ Automatically Shuts Down When Either Supply Is Removed ♦ Card Contacts Actively Pulled Low During Shutdown ♦ 1µA Total Quiescent Supply Current ♦ 0.
PAGE 2
MAX1840/MAX1841 Low-Voltage SIM/Smart Card Level Translators in µMAX ABSOLUTE MAXIMUM RATINGS DVCC, VCC to GND................................................-0.3V to +6.0V RIN, CIN, DATA, DDRV, SHDN to GND ......................................-0.3V to (DVCC + 0.3V) RST, CLK, IO to GND .................................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70°C) 10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW Operating Temperature Range ...........................
PAGE 3
Low-Voltage SIM/Smart Card Level Translators in µMAX (Figure 1, DVCC = +1.8V; VCC = +1.8V, +3.0V, or +5.0V; SHDN = DVCC, CIN = RIN = GND or DVCC, IO = VCC, DATA = DDRV = DVCC, CIO = CCLK = CRST = CDATA = 30pF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note1) PARAMETER SYMBOL Output Low Level VOL(DATA) Output High Level VOH(DATA) CONDITIONS MIN TYP MAX IO = GND, ISINK = 100µA 0.4 DVCC = 3.0V, IO = GND, ISINK = 200µA 0.4 ISOURCE = 10µA 0.
PAGE 4
Typical Operating Characteristics (Circuit of Figure 1, DVCC = 3.0V, VCC = +5.0V, DDRV or DATA = DVCC, RIN = CIN = GND, TA = +25°C, unless otherwise noted.) TOTAL OPERATING SUPPLY CURRENT vs. CARD-SIDE SUPPLY VOLTAGE (DATA STATIC) 2.0 VCC = 5V 1.5 VCC = 3V 1.0 VCC = 1.8V 0.5 fCIN = 5MHz 1.2 fCIN = 3.25MHz 0.8 0.4 1.6 0 2 4 6 8 VCC = 5V VCC = 3V 0.8 VCC = 1.8V 0.4 DATA OR DDRV = DVCC CIN CLOCKED WITH A 0 TO DVCC SQUARE WAVE 0 1.5 10 fCIN = 5MHz 1.2 fCIN = 1.625MHz 0 0 MAX1840/1-03 1.
PAGE 5
Low-Voltage SIM/Smart Card Level Translators in µMAX (Circuit of Figure 1, DVCC = 3.0V, VCC = +5.0V, DDRV or DATA = DVCC, RIN = CIN = GND, TA = +25°C, unless otherwise noted.) UNDERVOLTAGE SHUTDOWN WAVEFORM DDRV TO IO AND DATA WAVEFORM (MAX1841 ONLY) MAX1840/1-10 MAX1840/1-11 3V DDRV 2V/div 1.5V VCC 0.5V/div 0 3V DATA 2V/div 0 5V 0 1V IO 2V/div CLK, RST, OR IO 0.5V/div 0 0 1µs/div 1ms/div Pin Description PIN NAME FUNCTION 1 DATA System Controller Data Input/Output.
PAGE 6
MAX1840/MAX1841 Low-Voltage SIM/Smart Card Level Translators in µMAX Detailed Description The MAX1840/MAX1841 provide the necessary level translation for interfacing with SIMs and smart cards in multivoltage systems. These devices operate with logic supply voltages between +1.4V and +5.5V on the controller side (DVCC) and between +1.7V and +5.5V on the card side (VCC). The total supply current (IDVCC + IVCC) is 1µA while operating in an idle state (see Electrical Characteristics).
PAGE 7
Low-Voltage SIM/Smart Card Level Translators in µMAX CXN CXP 3.0V OR 5.0V DVCC MAX1686H SHDN SYSTEM CONTROLLER OUT MAX8867 MAX8860 PGND SHDN SIM OR SMART CARD SYSTEM CONTROLLER SET PGND SPI/QSPI/ MICROWIRE SYSTEM MAX1840 MAX1841 DVCC VCC VCC DVCC VCC VCC RIN RST RST RIN RST CS CIN CLK CLK CIN CLK SCLK IO DOUT DATA OPTIONAL IN GND MAX1840 MAX1841 OPTIONAL +3.3V DVCC IN MAX1686 OUT 3/5 GND MAX1840/MAX1841 +5.0V +3.
PAGE 8
Typical Application Circuit VCC DVCC DVCC DVCC VCC RIN RST 1µF VCC RST 1µF CLK CIN SYSTEM CONTROLLER 20k OPTIONAL SHDN* OPTIONAL DDRV* SIM OR SMART CARD 10k IO DATA IO SHUTDOWN CONTROL GND MAX1840 MAX1841 GND CLK GND * SHDN FOR MAX1840 ONLY; DDRV FOR MAX1841 ONLY. Packaging Information 10LUMAX.EPS MAX1840/MAX1841 Low-Voltage SIM/Smart Card Level Translators in µMAX Note: The MAX1840/MAX1841 do not have an exposed pad.