MAXIM MAX3397E Technical data

General Description

The MAX3397E ±15kV ESD-protected bidirectional
level translator provides level shifting for data transfer in
a multivoltage system. Externally applied voltages, V

CC

and VL, set the logic levels on either side of the device.
A logic-low signal present on the VLside of the device
appears as a logic-low signal on the VCCside of the
device, and vice versa. The MAX3397E utilizes a trans­mission-gate-based design to allow data translation in
either direction (VL↔ VCC) on any single data line. The
MAX3397E accepts VLfrom +1.2V to +5.5V and V

CC

from +1.65V to +5.5V, making the device ideal for data
transfer between low-voltage ASICs/PLDs and higher
voltage systems.

The MAX3397E features a shutdown mode that reduces
supply current to less than 1µA, thermal short-circuit pro­tection, and ±15kV ESD protection on the VCCside for
greater protection in applications that route signals exter­nally. The MAX3397E operates at a guaranteed data rate
of 8Mbps over the entire specified operating voltage
range. Within specific voltage domains, higher data rates
are possible. See the Timing Characteristics table.

The MAX3397E is available in an 8-pin µDFN package
and specified over the extended -40°C to +85°C oper­ating temperature range.

Applications

Cell Phones, MP3 Players

Telecommunications Equipment

SPI™, MICROWIRE™, and I2C Level Translation

Portable POS Systems, Smart Card Readers

Low-Cost Serial Interfaces, GPS

Features

♦ Bidirectional Level Translation

♦ Guaranteed Data Rate

8Mbps (+1.2V ≤ V

L

≤ VCC≤ +5.5V)

16Mbps (+1.8V ≤ V

L

≤ VCC≤ +3.3V)

♦ Extended ESD Protection on the I/O VCCLines

±15kV Human Body Model
±15kV Air-Gap Discharge per IEC 61000-4-2
±8kV Contact Discharge per IEC 61000-4-2

♦ Enable/Shutdown

♦ Ultra-Low 1µA Supply Current in Shutdown Mode

♦ 8-Pin µDFN Package

MAX3397E

Dual Bidirectional Low-Level

Translator in µDFN

________________________________________________________________ Maxim Integrated Products 1

19-0771; Rev 0; 4/07

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

Ordering Information

PART

TEMP

PIN­PACKAGE

TOP

PKG

CODE

MAX3397EELA+

-40°C to

8 µDFN

L822-1

Typical Application Circuit appears at end of data sheet.

SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.

+Denotes a lead-free package.

123

87465

MAX3397E

μDFN

(2mm x 2mm)

I/O V

CC1

VCCEN

+

I/O V

CC2

GND

V

L

I/O V

L2

I/O V

L1

Pin Configuration

RANGE

+85°C

(2mm x 2mm)

MARK

ABU

MAX3397E

Dual Bidirectional Low-Level
Translator in µDFN

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND.)
V

CC

, VL.....................................................................-0.3V to +6V

I/O V

CC_

......................................................-0.3V to (VCC+ 0.3V)

I/O V

L_

..........................................................-0.3V to (VL+ 0.3V)

EN.............................................................................-0.3V to +6V

Short-Circuit Duration I/O V

L_

, I/O V

CC_

to GND .......Continuous

Continuous Power Dissipation (T

A

= +70°C)

8-Pin µDFN (derate 4.8mW/°C above +70°C) ............ 381mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VCC= +1.65V to +5.5V, VL= +1.2V to 5.5V, I/O VL_, and I/O V

CC_

are unconnected, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +3.3V, VL= +1.8V, TA = +25°C.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS MIN

UNITS

POWER SUPPLIES

VL Supply Range V

L

1.2 5.5 V

VCC Supply Range V

CC

V

Supply Current from V

CC

I

QVCC

130 300 µA

Supply Current from V

L

I

QVL

110µA

VCC Shutdown-Mode Supply
Current

TA = +25°C, EN = GND

1µA

VL Shutdown-Mode Supply
Current

TA = +25°C, EN = GND

1µA

I/O VL_ and I/O V

CC_

Shutdown-

Mode Leakage Current

TA = +25°C, EN = GND

1µA

EN Input Leakage TA = +25°C

1µA

Tri-State Threshold Low V

TH_L

VCC falling (Note 3) 1.5 V

Tri-State Threshold High V

TH_H

VCC rising (Note 3) 1 V

ESD PROTECTION

I/O V

CC

Human Body Model (Note 4) ±15 kV

LOGIC-LEVEL THRESHOLDS

I/O VL_ Input-Voltage High V

IHL

VL -

0.2

V

I/O VL_ Input-Voltage Low V

ILL

V

I/O V

CC_

Input-Voltage High V

IHC

VCC -

0.4

V

I/O V

CC_

Input-Voltage Low V

ILC

V

I/O VL_ Output-Voltage High V

OHL

I/O VL_ source current = 20µA,
I/O V

CC_

> VCC - 0.4V

0.67 x
V

L

V

I/O VL_ Output-Voltage Low V

OLL

I/O VL_ sink current = 1mA,
I/O V

CC_

< 0.15V

0.4 V

TYP MAX

1.65 5.50

I

SHUTDOWN-VCC

I

SHUTDOWN-VL

I

SHUTDOWN-LKG

0.03

0.03

0.02

0.02

0.15

0.15

MAX3397E

Dual Bidirectional Low-Level

Translator in µDFN

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +1.65V to +5.5V, VL= +1.2V to 5.5V, I/O VL_, and I/O V

CC_

are unconnected, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at V

CC

= +3.3V, VL= +1.8V, TA = +25°C.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS MIN

TYP

MAX

UNITS

I/O V

CC_

Output-Voltage High V

OHC

I/O V

CC_

source current = 20µA,

I/O V

L _

> VL - 0.2V

0.67 x

V

CC

V

I/O V

CC_

Output-Voltage Low V

OLC

I/O V

CC_

sink current = 1mA,

I/O V

L_

< 0.15V

0.4 V

EN Input-Voltage High V

IH-EN

VL -

0.2

V

EN Input-Voltage Low V

IL-EN

V

RISE/FALL-TIME ACCELERATOR STAGE

I/O VCC side 0.8

Transition-Detect Threshold

I/O V

L

side 0.8

V

Accelerator Pulse Duration VL = 1.2V, VCC = 1.65V 27 ns

VL = 1.2V, VCC = 1.65V 40

I/O VL_ Output-Accelerator
Source Impedance

V

L

= 5V, VCC = 5V 9

Ω

VL = 1.2V, VCC = 1.65V 30

I/O V

CC_

Output-Accelerator

Source Impedance

V

L

= 5V, VCC = 5V 12

Ω

TIMING CHARACTERISTICS

(VCC= +1.65V to +5.5V, VL= +1.2V to +5.5V, R

LOAD

= 1MΩ, C

LOAD

= 15pF, driver output impedance ≤ 50Ω, I/O test signal of

Figure 1, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +3.3V, VL= +1.8V, TA= +25°C.) (Notes 1, 2)

0.15

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

+1.2V ≤ VL ≤ VCC ≤ +5.5V

I/O V

CC_

I/O V

CC_

I/O VL_ Rise Time t

I/O VL_ Fall Time t

Propagation Delay

Channel-to-Channel Skew t

Maximum Data Rate

Rise Time t

Fall Time t

Push-pull driving (Figure 1a) 7 25

Open-drain driving (Figure 1c) 170 400

Push-pull driving (Figure 1a) 6 37

Open-drain driving (Figure 1c) 6 37

Push-pull driving (Figure 1b) 8 30

Open-drain driving (Figure 1d) 180 400

Push-pull driving (Figure 1b) 3 30

Open-drain driving (Figure 1d) 3 30

Driving I/O V

Driving I/O V

Each translator
equally loaded

Push-pull driving 8 Mbps

Open-drain driving 500 kbps

t

PD-VL-VCC

t

PD-VCC-VL

RVCC

FVCC

RVL

FVL

SKEW

L_

CC_

Push-pull driving (Figure 1a) 5 30

Open-drain driving (Figure 1c) 170 800

Push-pull driving (Figure 1b) 4 30

Open-drain driving (Figure 1d) 190 1000

Push-pull driving 20

Open-drain driving 50

ns

ns

ns

ns

ns

ns

MAX3397E

Dual Bidirectional Low-Level
Translator in µDFN

4 _______________________________________________________________________________________

Note 1: All units are 100% production tested at TA= +25°C. Limits over the operating temperature range are guaranteed by design

and not production tested.

Note 2: For normal operation, ensure VL< (V

CC

+ 0.3V).

Note 3: When V

CC

is below VLby more than the tri-state threshold, the device turns off its pullup resistors and I/O_ enters tri-state.

The device is not in shutdown.

Note 4: To ensure maximum ESD protection, place a 1µF capacitor between V

CC

and GND. See the Typical Application Circuit.

Note 5: 10% of input to 90% of output.
Note 6: 90% of input to 10% of output.

PARAMETER

CONDITIONS

UNITS

+1.8V ≤ VL ≤ VCC ≤ +3.3V

I/O V

CC_

Rise Time t

RVCC

Figure 1a (Note 5) 15 ns

I/O V

CC_

Fall Time t

FVCC

Figure 1a (Note 6) 15 ns

I/O VL_ Rise Time t

RVL

Figure 1b (Note 5) 15 ns

I/O VL_ Fall Time t

FVL

Figure 1b (Note 6) 15 ns

Driving I/O V

L_

15

Propagation Delay

Driving I/O V

CC_

15

ns

Channel-to-Channel Skew t

SKEW

Each translator equally loaded 10 ns

Maximum Data Rate 16

Mbps

TIMING CHARACTERISTICS (continued)

(VCC= +1.65V to +5.5V, VL= +1.2V to +5.5V, R

LOAD

= 1MΩ, C

LOAD

= 15pF, driver output impedance ≤ 50Ω, I/O test signal of

Figure 1, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +3.3V, VL= +1.8V, TA= +25°C.) (Notes 1, 2)

Typical Operating Characteristics

(VCC= +3.3V, VL= +1.8V, R

LOAD

= 1MΩ, C

LOAD

= 15pF, TA= +25°C, data rate = 8Mbps, unless otherwise noted.)

0

100

50

200

150

250

300

1.65 3.30 3.852.20 2.75 4.40 4.95 5.50

VL SUPPLY CURRENT vs. VCC SUPPLY VOLTAGE

(DRIVING ONE I/O V

L_

)

MAX3397E toc01

VCC SUPPLY VOLTAGE (V)

V

L

SUPPLY CURRENT (μA)

0

50

150

100

200

250

1.65 2.752.20 3.30 3.85 4.40 4.95 5.50

VL SUPPLY CURRENT vs. VCC SUPPLY VOLTAGE

(DRIVING ONE I/O V

CC_

)

MAX3397E toc02

VCC SUPPLY VOLTAGE (V)

V

L

SUPPLY CURRENT (μA)

0

300

100

200

500

400

700

600

800

1.2 1.9 2.6 3.3

VCC SUPPLY CURRENT vs. VL SUPPLY VOLTAGE

(DRIVING ONE I/O V

L_

)

MAX3397E toc03

VL SUPPLY VOLTAGE (V)

V

CC

SUPPLY CURRENT (μA)

SYMBOL

MIN TYP MAX

t

PD-VL-VCC

t

PD-VCC-VL