MAXIM MAX3228E, MAX322EAE, MAX3229E, MAX3229AE User Manual

General Description

The MAX3228E/AE and MAX3229E/AE are +2.5V to +5.5V powered EIA/TIA-232 and V.28/V.24 communications interfaces with low power requirements, high datarate capabilities, and enhanced electrostatic discharge (ESD) protection, in a chip-scale package (UCSP™) and WLP Package. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 AirGap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

The MAX3228E/AE and MAX3229E/AE achieve a 1µA supply current with Maxim’s AutoShutdown™ feature. They save power without changes to existing BIOS or operating systems by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitters of the connected peripherals are off.

The transceivers have a proprietary low-dropout transmitter output stage, delivering RS-232 compliant performance from a +3.1V to +5.5V supply, and RS-232 compatible performance with a supply voltage as low as +2.5V. The dual charge pump requires only four small 0.1µF capacitors for operation from a +3.0V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels.

The MAX3228E/AE and MAX3229E/AE offer a separate power-supply input for the logic interface, allowing configurable logic levels on the receiver outputs and transmitter inputs. Operating over a +1.65V to V

range, V

provides the MAX3228E/AE and MAX3229E/AE compatibility with multiple logic families.

The MAX3229E/AE contains one receiver and one transmitter. The MAX3228E/AE contains two receivers and two transmitters. The MAX3228E/AE and MAX3229E/AE are available in tiny chip-scale and WLP packaging and are specified across the extended industrial temperature range of -40°C to +85°C.

Applications

Personal Digital Assistants

Cell Phone Data Lump Cables

Set-Top Boxes

Handheld Devices

Cell Phones

Features

♦ 6 ✕ 5 Chip-Scale Package (UCSP) and WLP

Package

♦ ESD Protection for RS-232 I/O Pins:

±15kV—IEC 1000-4-2 Air-Gap Discharge ±8kV—IEC 1000-4-2 Contact Discharge ±15kV—Human Body Model

♦ 1µA Low-Power AutoShutdown ♦ 250kbps Guaranteed Data Rate ♦ Meets EIA/TIA-232 Specifications Down to +3.1V ♦ RS-232 Compatible to +2.5V Allows Operation

from Single Li+ Cell

♦ Small 0.1µF Capacitors ♦ Configurable Logic Levels

MAX3228E/MAX3228AE/MAX3229E/MAX3229AE

±15kV ESD-Protected +2.5V to +5.5V

RS-232 Transceivers in UCSP and WLP

________________________________________________________________

Maxim Integrated Products

MAX3228E/AE

5kΩ

T2OUT

T2IN

TTL/CMOS

INPUTS

C2-

C2+

C1-

C1+

A1 A5

20μA20μA

V-

V+

2.5V TO 5.5V

0.1μF

BYPASS

0.1μF

FORCEOFFFORCEON

INVALID

T1OUT

T1IN

GND

TO POWERMANAGEMENT UNIT

RS-232 OUTPUTS

1.65V TO 5.5V

5kΩ

R2IN

R2OUT

TTL/CMOS

OUTPUTS

R1IN

R1OUT

RS-232 INPUTS

0.1μF

Typical Operating Circuits

19-2139; Rev 2; 10/08

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

Denotes a lead-free/RoHS-compliant package.

Requires solder temperature profile described in the Absolute

Maximum Ratings section.

UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and environment. Refer to the UCSP Reliabilitly Notice in the UCSP Reliability section of this data sheet for more information. T = Tape and reel.

Ordering Information

PART

BUMP-PACKAGE

MAX3228EEBV-T

6 x 5 UCSP*

MAX3228AEEWV+T

6 x 5 WLP

MAX3229EEBV-T

6 x 5 UCSP*

MAX3229AEEWV+T

6 x 5 WLP

UCSP is a trademark of Maxim Integrated Products, Inc.

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Typical Operating Circuits continued at end of data sheet.

Pin Configurations appear at end of data sheet.

TEMP RANGE

-40°C to +85°C

MAX3228E/MAX3228AE/MAX3229E/MAX3229AE

±15kV ESD-Protected +2.5V to +5.5V RS-232 Transceivers in UCSP and WLP

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.

VCCto GND...........................................................-0.3V to +6.0V

V+ to GND .............................................................-0.3V to +7.0V

V- to GND ..............................................................+0.3V to -7.0V

V+ to |V-| (Note 1) ................................................................+13V

to GND..............................................................-0.3V to +6.0V

Input Voltages

T_IN_, FORCEON, FORCEOFF to GND.....-0.3V to (V

+ 0.3V)

R_IN_ to GND ...................................................................±25V

Output Voltages

_OUT to GND ...............................................................±13.2V

_OUT INVALID to GND ............................-0.3V to (V

+ 0.3V)

INVALID to GND..........................................-0.3V to (V

+0.3V)

Short-Circuit Duration T

OUT to GND........................Continuous

Continuous Power Dissipation (T

= +70°C)

✕ 5 UCSP (derate 10.1mW/°C above T

= +70°C)...805mW

✕ 5 WLP (derate 20mW/°C above T

= +70°C) ............1.6W

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

Junction Temperature......................................................+150°C

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

Bump Temperature (Soldering) (Note 2)

Infrared (15s) ...............................................................+200°C

Vapor Phase (20s) .......................................................+215°C

ELECTRICAL CHARACTERISTICS

(VCC= +2.5V to +5.5V, VL= +1.65V to +5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10%, TA= T

MIN

to T

MAX

. Typical values are at TA=

+25°C, unless otherwise noted.) (Note 3)

PARAMETER

CONDITIONS

UNITS

DC CHARACTERISTICS

VL Input Voltage Range V

FORCEON = GND FORCEOFF = V

, all RIN open

10 µA

FORCEOFF = GND 10 µA

VCC Supply Current, AutoShutdown

FORCEON, FORCEOFF floating 1 mA

Supply Current,

AutoShutdown Disabled

FORCEON = FORCEOFF = V

no load

0.3 1 mA

FORCEON or FORCEOFF = GND, V

= VL =+5V

VL Supply Current I

FORCEON, FORCEOFF floating 1

µA

LOGIC INPUTS

Pullup Currents FORCEON, FORCEOFF to V

20 µA

Input Logic Low T_IN, FORCEON, FORCEOFF 0.4 V Input Logic High T_IN, FORCEON, FORCEOFF 0.66 ✕ V

Transmitter Input Hysteresis 0.5 V

Input Leakage Current T_IN

±1 µA

RECEIVER OUTPUTS

Output Leakage Currents

R_OUT, receivers disabled, FORCEOFF = GND or in AutoShutdown

µA

Output Voltage Low I

OUT

= 0.8mA 0.4 V

Output Voltage High I

OUT

= -0.5mA

Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V. Note 2: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device

can be exposed to during board level solder attach and rework. This limit permits only the use of the solder profiles recommended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow. Preheating is required. Hand or wave soldering is not allowed.

SYMBOL

MIN TYP MAX

1.65 VCC + 0.3

±0.01

VL - 0.4 VL - 0.1

±10

MAX3228E/MAX3228AE/MAX3229E/MAX3229AE

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.5V to +5.5V, VL= +1.65V to +5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10%, TA= T

MIN

to T

MAX

. Typical values are at TA=

+25°C, unless otherwise noted.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RECEIVER INPUTS

Input Voltage Range -25

VCC = +3.3V 0.6 1.2

Input Threshold Low TA = +25°C

= +5.0V 0.8 1.7

VCC = +3.3V 1.3 2.4

Input Threshold High TA = +25°C

= +5.0V 1.8 2.4

Input Hysteresis 0.5 V

Input Resistance 357kΩ

AUTO SHUTDOWN

Positive threshold 2.7

Receiver Input Threshold to INVALID Output High

Figure 3a

Receiver Input Threshold to INVALID Output Low

0.3 V

Receiver Positive or Negative Threshold to INVALID High

INVH

VCC = +5.0V, Figure 3b 1 µs

Receiver Positive or Negative Threshold to INVALID Low

INVL

VCC = +5.0V, Figure 3b 30 µs

Receiver Edge to Transmitters Enabled

VCC = +5.0V, Figure 3b

µs

INVALID OUTPUT

Output Voltage Low I

OUT

= 0.3mA 0.4 V

Output Voltage High I

OUT

= -0.5mA VCC - 0.4

TRANSMITTER OUTPUTS

VCC Mode Switch Point (V

Falling)

T_OUT = ±5.0V to ±3.7V

3.1 V

VCC Mode Switch Point (V

Rising)

T_OUT = ±3.7V to ±5.0V 3.3 3.7 V

C C

M od e S w i tch P oi nt H yster esi s

VCC = +3.1V to +5.5V, V

falling

= +25°C)

±5

Output Voltage Swing

All transmitter outputs loaded with 3kΩ to ground.

= +2.5V to

+3.1V, V

rising

Output Resistance VCC = V+ = V- = 0, T_OUT = ±2V 300

Output Short-Circuit Current

Output Leakage Current T_OUT = ±12V, transmitters disabled

µA

ESD PROTECTION

Human Body Model

IEC 1000-4-2 Air-Gap Discharge

R_IN, T_OUT

IEC 1000-4-2 Contact Discharge ±8

±15kV ESD-Protected +2.5V to +5.5V

RS-232 Transceivers in UCSP and WLP

_______________________________________________________________________________________ 3

Negative threshold -2.7

-0.3

2.85

±3.7

100

VCC - 0.1

400

±5.4

10M

±15

+25

±60

±25

MAX3228E/MAX3228AE/MAX3229E/MAX3229AE

±15kV ESD-Protected +2.5V to +5.5V RS-232 Transceivers in UCSP and WLP

4 _______________________________________________________________________________________

Note 3: VCCmust be greater than VL.

TIMING CHARACTERISTICS

(VCC= +2.5V to +5.5V, VL= +1.65V to +5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10%, TA= T

MIN

to T

MAX

. Typical values are at TA=

+25°C, unless otherwise noted.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Data Rate

= 3kΩ, CL = 1000pF, one transmitter

switching

250 kbps

Receiver Propagation Delay

Receiver input to receiver output, C

= 150pF

μs

Receiver Output Enable-Time VCC = VL = +5V

Receiver Output Disable-Time VCC = VL = +5V

Transmitter Skew

Receiver Skew

50 ns

Transition Region Slew Rate

= 3kΩ to 7kΩ, CL = 150pF to

1000pF, T

= +25°C

630V/μs

Typical Operating Characteristics

(VCC= +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and CL, TA= +25°C, unless otherwise noted.)

0 1000500 1500 2000 2500 3000

OPERATING SUPPLY CURRENT

vs. LOAD CAPACITANCE (MAX3229E)

MAX3228E/28AE/29E/29AE toc03

LOAD CAPACITANCE (pF)

OPERATING SUPPLY CURRENT (mA)

250kbps

20kbps

| t

- t

PHL

| t

PHL

| 100

PLH

- t

PLH

0.15

200

TRANSMITTER OUTPUT VOLTAGE

vs. LOAD CAPACITANCE

-2

-4

TRANSMITTER OUTPUT VOLTAGE (V)

-6 0 1500 2000500 1000 2500 3000

LOAD CAPACITANCE (pF)

VCC RISING

MAX3228E/28AE/29E/29AE toc01

SLEW RATE (V/µs)

SLEW RATE vs. LOAD CAPACITANCE

VCC = 5.5V

VCC = 2.5V

0 2500 3000

1000500 1500 2000

LOAD CAPACITANCE (pF)

MAX3228E/28AE/29E/29AE toc02

MAX3228E/MAX3228AE/MAX3229E/MAX3229AE

±15kV ESD-Protected +2.5V to +5.5V

RS-232 Transceivers in UCSP and WLP

_______________________________________________________________________________________ 5

MAX3228E/

MAX3228AE

NAME FUNCTION

A1 A1 V

Supply Voltage. +2.5V to +5.5V supply voltage

A2 A2 C2+ Inverting Charge-Pump Capacitor Positive Terminal

A3 A3 C2- Inverting Charge-Pump Capacitor Negative Terminal

A4 A4 V- Negative Charge-Pump Output. -5.5V/-4.0V generated by charge pump.

A5 A5 V

Logic Voltage Input. Logic-level input for receiver outputs and transmitter inputs. Connect V

to the system logic supply voltage or VCC if no logic supply is required.

A6, B6 A6 T_IN Transmitter Input(s)

B1 B1 V+

Positive Charge-Pump Output. +5.5V/+4.0V generated by charge pump. If charge pump is generating +4.0V, the device has switched from RS-232 compliant to RS-232 compatible mode.

B2, B3, B4,

C2, C3, C4,

D2, D3, D4,

N.C.

No Connection. The MAX3228AE/MAX3229AE are not populated with solder bumps at these locations. The MAX3228AE/MAX3229AE are populated with electrically isolated bumps at these locations.

B5 B5

Active-High FORCEON Input. Drive FORCEON high to override automatic circuitry, keeping transmitters and charge pumps on. Pulls itself high internally if not connected.

—

B6, D6,

E4, E6

N.C.

No Connection. These locations are populated with solder bumps, but are electrically isolated.

C1 C1 C1+ Positive Regulated Charge-Pump Capacitor Positive Terminal

Pin Description

Typical Operating Characteristics (continued)

(VCC= +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and CL, TA= +25°C, unless otherwise noted.)

2.5 3.53.0 4.0 4.5 5.0 5.5

OPERATING SUPPLY CURRENT

vs. SUPPLY VOLTAGE (MAX3229E)

MAX3228E/28AE/29E/29AE toc04

SUPPLY VOLTAGE (V)

OPERATING SUPPLY CURRENT (mA)

TRANSMITTER OUTPUT VOLTAGE vs.

SUPPLY VOLTAGE (V

-2

-4

TRANSMITTER OUTPUT VOLTAGE (V)

-6

-8

2.5 3.53.0 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

RISING)

MAX3228E/28AE/29E/29AE toc05

TRANSMITTER OUTPUT VOLTAGE vs.

SUPPLY VOLTAGE (V

-2

-4

TRANSMITTER OUTPUT VOLTAGE (V)

-6

-8

2.5 3.53.0 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

FALLING)

MAX3229E/

MAX3229AE

MAX3228E/28AE/29E/29AE toc06

B2, B3, B4, C2, C3, C4,

FORCEON

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