MAXIM MAX3190, MAX3190E Technical data

General Description

The MAX3190/MAX3190E single RS-232 transmitters in
a SOT23-6 package are for space- and cost-con­strained applications requiring minimal RS-232 commu­nications. These devices consume only 200µA of
supply current from ±7.5V to ±12V supplies. The
MAX3190/MAX3190E transmitter outputs are RS-232
compatible when powered from ±6V to ±7.5V supplies.
They feature a shutdown input that reduces current
consumption to only 1µA and forces the transmitter out­put into a high-impedance state. RS-232-compliant data
transmission is guaranteed up to 460kbps.

The MAX3190/MAX3190E are EIA/TIA-232 transmitters
that convert CMOS/TTL logic levels to RS-232-compliant
signals. The MAX3190E transmitter output is protected
to ±15kV per the Human Body Model, ±8kV per IEC
1000-4-2 Contact Discharge, and ±15kV per IEC 1000­4-2 Air-Gap Discharge, providing protection against
harsh environments. The MAX3190/ MAX3190E trans­mitters have a standard inverting output.

Applications

Set-Top Boxes

Telecommunications

Diagnostic Ports

Networking Equipment

Digital Cameras

Hand-Held Equipment

Features

♦ Small 6-Pin SOT23 Package

♦ ESD-Protected RS-232 Output (MAX3190E)

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

♦ 200µA Operating Supply Current

♦ Shutdown Reduces Supply Current to 0.4µA

♦ RS-232-Compliant Operation from ±7.5V to ±12V

Supplies

♦ RS-232-Compatible Operations from ±6V to ±7.5V

Supplies

♦ 460kbps Guaranteed Data Rate

♦ Three-State RS-232 Transmitter Output

♦ No External Components

MAX3190/MAX3190E

±15kV ESD-Protected, 460kbps,

RS-232 Transmitters in SOT23-6

________________________________________________________________ Maxim Integrated Products 1

Typical Operating Circuit

19-1931; Rev 1; 3/03

Pin Configuration

Ordering Information

ABQS

AAIA

TOP

MARK

6 SOT23-6

6 SOT23-6

PIN­PACKAGE

TEMP RANGE

-40°C to +85°C

-40°C to +85°C

MAX3190EEUT-T

MAX3190EUT-T

PART

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.

+5V

C

BYPASS1

0.1µF

CAPACITORS MAY BE
POLARIZED OR UNPOLARIZED.

1

SHDN

6

V

CC

TIN

3

MAX3190

MAX3190E

GND

2

V

TOUT

TOP VIEW

5

EE

4

C

BYPASS2

0.1µF

-10V+10V

16V

SHDN

GND

2

34

CC

MAX3190

MAX3190E

SOT23-6

5 V

EE

TOUTTIN

MAX3190/MAX3190E

±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

CC

= +7.5V to +12V, VEE= -7.5V to -12V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

CC

= +10V,

V

EE

= -10V, and TA= +25°C.) (Note 2)

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.

Note 1: VCCand VEEcan have maximum magnitudes of 13.2V, but their absolute difference cannot exceed 22V.

V

CC

to GND (Note 1)...........................................-0.3V to +13.2V

V

EE

to GND (Note 1)............................................+0.3V to -13.2V

V

CC

to VEE(Note 1) .............................................................+22V

TIN, SHDN to GND ...................................................-0.3V to +7V

TOUT to GND (SHDN = GND)..........................................±13.2V

Output Short-Circuit to GND Duration........................Continuous

Continuous Power Dissipation (T

A

= +70°C)

6-Pin SOT23 (derate 8.7mW/°C above +70°C)..........691mW

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

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

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS

Positive Supply Voltage V

Negative Supply Voltage V

Positive Supply Current I

Negative Supply Current I

Shutdown Supply Current V

CC

EE

CC

EE

V

SHDN

V

SHDN

SHDN

INPUT LOGIC (TIN, SHDN)

Input Logic Threshold Low V

Input Logic Threshold High V

IL

IH

Input Leakage ±0.01 ±1 µA

TIN Input Hysteresis 100 mV

TRANSMITTER OUTPUT

Output Voltage Swing V

Output Resistance R

TOUT

TOUTVCC

VCC = 7.5V, VEE = -7.5V, RL = 3kΩ ±5 V

VCC = 6V, VEE = -6V, RL = 3kΩ ±3.7 V

Outp ut S hor t- C i r cui t C ur r ent ±35 +60 mA

V

Output Leakage Current I

TOUT

V

TOUT

EE

TIMING CHARACTERISTICS

R

= 3kΩ,

Maximum Data Rate

Transmitter Skew t

Transition-Region Slew Rate

Transmitter Enable Time t

TS

EN

L

= 1000pF

C

L

|t

PHL

= 3kΩ to 7kΩ,

R

L

= 300pF to 1000pF, measured from -3V

C

L

to +3V or +3V to -3V,
V

CC

= +5V 250 µA

= +5V -125 µA

= 0 ±0.4 ±10 µA

= VEE = 0, V

= ±2V 300 Ω

TOUT

= ±12V; VCC = 0 or VCC = +10V,

= -10V; SHDN = GND

- t

|, Figure 1 100 ns

PLH

= +10V, VEE = -10V, TA = +25°C

7.5 12 V

-12 -7.5 V

0.8 V

2.4 V

±100 µA

460 kbps

6 30 V/µs

2µs

MAX3190/MAX3190E

±15kV ESD-Protected, 460kbps,

RS-232 Transmitters in SOT23-6

_______________________________________________________________________________________ 3

Typical Operating Characteristics

(VCC= +10V, VEE= -10V, RL= 3kΩ, TA= +25°C, unless otherwise noted.)

ELECTRICAL CHARACTERISTICS (continued)

(V

CC

= +7.5V to +12V, VEE= -7.5V to -12V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

CC

= +10V,

V

EE

= -10V, and TA= +25°C.) (Note 2)

Note 2: All devices are 100% tested at T

A

= +25°C. All limits over temperature are guaranteed by design.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

ESD PROTECTION (MAX3190E)

Human Body Model ±15

IEC 1000-4-2 Contact Discharge ±8TOUT

IEC 1000-4-2 Air-Gap Discharge ±15

SUPPLY CURRENT

vs. OUTPUT CAPACITANCE

6

5

4

3

2

SUPPLY CURRENT (mA)

1

0

0 500 1000 1500 2000 2500

460kbps

250kbps

125kbps

OUTPUT CAPACITANCE (pF)

20kbps

MAX3190/90E toc01

SLEW RATE (V/µs)

SLEW RATE vs. OUTPUT CAPACITANCE

40

35

30

25

20

15

10

FALLING EDGE

5

0

0 800400 1200 1600 2000

RISING EDGE

CAPACITANCE (pF)

MAX3190/90E toc02

kV

TRANSMITTER OUTPUT

SHUTDOWN WAVEFORM

SHDN

TOUT 0

1.0µs/div

MAX3190/90E toc03

5V

0

+10V

-10V

TRANSMITTER OUTPUT VOLTAGE

vs. SUPPLY VOLTAGE

12

VEE = -VCC, 460kbps

10

8
6
4
2
0

-2

TOUT VOLTAGE (V)

-4

-6

-8

-10

-12
6897 101112

SUPPLY VOLTAGE (V)

POSITIVE

NEGATIVE

MAX3190/90E toc04

Detailed Description

The MAX3190/MAX3190E are EIA/TIA-232 transmitters
that convert CMOS/TTL logic levels to RS-232 signals.
They operate on ±7.5V to ±12V supplies and feature
enhanced electrostatic discharge protection (see ESD
Protection). The MAX3190/MAX3190E guarantee a
460kbps data rate with worst-case loads of 3kΩ in par­allel with 1000pF. The MAX3190/MAX3190E invert the
TOUT signal relative to TIN (standard RS-232). The
transmitter input does not have a pullup resistor and
should be connected to GND if unused.

Shutdown

The MAX3190/MAX3190E feature a shutdown input.
Drive SHDN low to reduce the supply current to 1µA
(max). Shutdown also forces TOUT into a high-imped­ance state, allowing the signal line to be safely con­trolled by other transmitters. Drive SHDN high for
normal operation.

ESD Protection

As with all Maxim devices, ESD protection structures are
incorporated on all pins to protect against ESD encoun­tered during handling and assembly. The MAX3190E’s
transmitter output has extra protection against static
electricity. Maxim has developed state-of-the-art struc­tures enabling this pin to withstand ESD up to ±15kV
without damage or latch-up. The MAX3190E’s transmit­ter output is characterized for protection to the following
limits:

• ±15kV using the Human Body Model

• ±8kV using the Contact Discharge method specified

in IEC 1000-4-2

• ±15kV using the Air-Gap Discharge method specified
in IEC 1000-4-2

Human Body Model

Figure 2 shows the Human Body Model, and Figure 3
shows the current waveform it generates when dis­charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of interest,
and then discharged into the test device through a

1.5kΩ resistor.

IEC 1000-4-2

The IEC 1000-4-2 standard covers ESD testing and
performance of finished equipment; it does not specifi­cally refer to ICs. The MAX3190E enables the design of
equipment that meets the highest level (Level 4) of IEC
1000-4-2 without the need for additional ESD-protection
components. The major difference between tests done
using the Human Body Model and IEC 1000-4-2 is
higher peak current in IEC 1000-4-2. Because series
resistance is lower in the IEC 1000-4-2 model, the ESD
withstand voltage measured to this standard is general­ly lower than that measured using the Human Body.
Figure 4 shows the IEC 1000-4-2 model, and Figure 5

MAX3190/MAX3190E

±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6

4 _______________________________________________________________________________________

Pin Description

Figure 1. Transmitter Propagation-Delay Timing

NAME

FUNCTION

1

SHDN

Active-Low Shutdown. Pull low to
reduce the supply current and to force
TOUT into a high-impedance state.

2 GND Ground

PIN

3 TIN TTL/CMOS Transmitter Input

4 TOUT RS-232 Transmitter Output

6 V

CC

Positive Supply Voltage

5 V

EE

Negative Supply Voltage

Figure 2. Human Body ESD Test Model

+10V

TOUT

-10V

t

PLH

t

V

IH

TIN

V

IL

PHL

50%50%

50%50%

R

C

1MΩ

CHARGE-CURRENT

LIMIT RESISTOR

HIGH-

VOLTAGE

DC

SOURCE

100pF

C

s

R

D

1500Ω

DISCHARGE

RESISTANCE

STORAGE
CAPACITOR

DEVICE
UNDER

TEST

shows the current waveform for the ±8kV IEC 1000-4-2
Level 4 ESD Contact Discharge test. The Air-Gap test
involves approaching the device with a charged probe.
The Contact Discharge method connects the probe to
the device before the probe is energized.

Power-Supply Decoupling

In most circumstances, 0.1µF bypass capacitors are
adequate for power-supply decoupling. Connect the
bypass capacitors as close to the IC as possible.

Applications Information

Power-Supply Sources

The MAX3190/MAX3190E require ±7.5V to ±12V dual
supplies. For applications where these supply voltages
are not present, a DC-DC converter must be added.
Due to the MAX3190/MAX3190E’s low current con­sumption, a charge pump can provide the proper supply
voltages and requires a minimal amount of board
space and cost.

When using another RS-232 device containing an internal
unregulated charge pump (Tables 1 and 2), the
MAX3190/MAX3190E may be powered from the internal
charge pump (Figure 6). This eliminates the need for
additional external DC-DC converters to generate the
required ±7.5V to ±12V dual supplies. The MAX3190/
MAX3190E are specifically designed to be used with
Maxim’s RS-232 products listed in Tables 1 and 2.
Competitive RS-232 devices’ charge pumps typically
do not have the capability to power these devices.

The MAX3190/MAX3190E can be operated from ±6V to
±7.5V supplies. In this condition, the devices are guar­anteed to be RS-232-compatible (TOUT ≥ +3.7V).

For applications that have ±4.5V to ±6V supplies avail­able, please refer to the MAX3188/MAX3189 or
MAX3188E/MAX3189E data sheet.

MAX3190/MAX3190E

±15kV ESD-Protected, 460kbps,

RS-232 Transmitters in SOT23-6

_______________________________________________________________________________________ 5

Figure 3. Human Body Model Current Waveform

Figure 4. IEC 1000-4-2 ESD Test Model

Figure 5. IEC 1000-4-2 Generator Current Waveform

PEAK-TO-PEAK RINGING

I

r

(NOT DRAWN TO SCALE)

AMPERES

IP 100%

90%

36.8%

10%

0

0

t

RI

TIME

t

DL

CURRENT WAVEFORM

HIGH-

VOLTAGE

DC

SOURCE

R

C

50MΩ TO 100MΩ

CHARGE-CURRENT

LIMIT RESISTOR

C

150pF

s

R

D

330Ω

DISCHARGE

RESISTANCE

STORAGE
CAPACITOR

I

100%

90%

PEAK

I

DEVICE
UNDER

TEST

10%

tR = 0.7ns TO 1ns

30ns

60ns

t

MAX3190/MAX3190E

±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6

6 _______________________________________________________________________________________

Figure 6. Powering the MAX3190/MAX3190E

+5V SUPPLY

C

BYPASS

0.1µF
V

CC

C3

0.1µF

C1+

C1

C2

* FOR MAXIM PART NUMBER,

SEE TABLES 1 AND 2.

C1-

C2+

C2-

MAX_ _ _ _*

V+

V-

C4

0.1µF

V

CC

V

EE

MAX3190

MAX3190E

TIN

SHDN

TOUT

GNDGND

+5V

MAX3188E/MAX3189E

±15kV ESD-Protected, 460kbps,

RS-232 Transmitters in SOT23-6

_______________________________________________________________________________________ 7

Chip Information

TRANSISTOR COUNT: 75

PROCESS: CMOS

Table 2. ±15kV ESD-Protected RS-232
Devices with Internal Unregulated Charge
Pumps of ±10V (typical)

Table 1. RS-232 Devices with Internal
Unregulated Charge Pumps of ±10V
(typical)

PART NUMBER NO. OF TX/RX

MAX200 5/0 120
MAX201 2/2 120
MAX202 2/2 64
MAX203 2/2 120
MAX204 4/0 120
MAX205 5/5 120
MAX206 4/3 120
MAX207 5/3 120
MAX208 4/4 120
MAX209 3/5 120
MAX211 4/5 120
MAX213 4/5 120
MAX220 2/2 120
MAX221 1/1 250
MAX222 2/2 200
MAX223 4/5 120
MAX225 5/5 120
MAX230 5/0 120
MAX231 2/2 120

MAX232 2/2 120
MAX232A 2/2 200
MAX233A 2/2 200

MAX233 2/2 120

MAX234 4/0 120

MAX235 5/5 120

MAX236 4/3 120

MAX237 5/3 120

MAX238 4/4 120

MAX239 3/5 120

MAX240 5/5 120

MAX241 4/5 120

MAX242 2/2 200

MAX243 2/2 200

MAX244 8/10 120

MAX248 8/8 120

MAX249 6/10 120

DATA RATE

(kbps)

PART NUMBER NO. OF TX/RX

MAX202E 2/2 64
MAX203E 2/2 120
MAX205E 5/5 120
MAX206E 4/3 120
MAX207E 5/3 120
MAX208E 4/4 120
MAX211E 4/5 120
MAX213E 4/5 120
MAX221E 1/1 250
MAX241E 4/5 120

DATA RATE

(kbps)

MAX3188E/MAX3189E

±15kV ESD-Protected, 460kbps,
RS-232 Transmitters in SOT23-6

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

© 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages

.)

6LSOT.EPS