MAX3180 datasheet, PDF - EEWORLD Datasheet

19-1444; Rev 1; 7/99

+3V to +5.5V, 1.5Mbps

RS-232 Receivers in SOT23-5

General Description

The MAX3180–MAX3183 are single RS-232 receivers in

a SOT23-5 package for space- and cost-constrained

applications requiring minimal RS-232 communications.

These devices minimize power and heat dissipation by

consuming only 0.5µA supply current from a +3.0V to

+5.5V supply voltage. They guarantee true RS-232 per-

formance up to a 1.5Mbps data rate.

The MAX3180/MAX3182 feature a three-state TTL/

CMOS receiver output that is controlled by an

EN

logic

input. The MAX3181/MAX3183 feature an

INVALID

out-

put that indicates valid RS-232 signals at the receiver

input for applications requiring automatic system wake-

up. The MAX3180/MAX3181 receivers have a standard

inverting output, while the MAX3182/MAX3183 receivers

have a noninverting output.

o

Tiny SOT23-5 Package

o

0.5µA Supply Current

o

1.5Mbps Guaranteed Data Rate

o

Meet EIA/TIA-232 and V.28/V.24 Specifications

Down to V

CC

= +3.0V

o

INVALID

Output Indicates Valid RS-232 Signal at

Receiver Input (MAX3181/MAX3183)

o

Three-State TTL/CMOS Receiver Output

(MAX3180/MAX3182)

o

Noninverting RS-232 Output (MAX3182/MAX3183)

Features

MAX3180–MAX3183

Ordering Information

PART

TEMP. RANGE

PIN-

PACKAGE

5 SOT23-5

TOP

MARK

ADKF

ADKG

ADKH

ADKI

Applications

Diagnostic Ports

Telecommunications

Networking Equipment

Set-Top Boxes

Digital Cameras

Hand-Held Equipment

MAX3180EUK-T

-40°C to +85°C

MAX3181EUK-T

-40°C to +85°C

MAX3182EUK-T

-40°C to +85°C

MAX3183EUK-T

-40°C to +85°C

Selector Guide

PART

MAX3180

MAX3181

MAX3182

MAX3183

PACKAGE

SOT23-5

SUPPLY

CURRENT (µA)

0.5

EN

INPUT

—

INVALID

OUTPUT

—

INVERTING

ROUT

—

NONINVERTING

ROUT

—

Pin Configurations/Functional Diagrams

TOP VIEW

EN (INVALID)

1

MAX3180

MAX3181

5k

5

V

CC

EN (INVALID)

1

MAX3182

MAX3183

5k

5

V

CC

GND

2

GND

2

ROUT

3

4

RIN

ROUT

3

4

RIN

SOT23-5

( ) ARE FOR MAX3181/MAX3183 ONLY

.

SOT23-5

________________________________________________________________

Maxim Integrated Products

1

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

+3V to +5.5V, 1.5Mbps

RS-232 Receivers in SOT23-5

MAX3180–MAX3183

ABSOLUTE MAXIMUM RATINGS

V

CC

to GND ..............................................................-0.3V to +6V

RIN to GND ..........................................................................±25V

EN,

ROUT,

INVALID

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

CC

+ 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW

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

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

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

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.

ELECTRICAL CHARACTERISTICS

(V

CC

= +3.0V to +5.5V, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

CC

= +5.0V and T

A

= +25°C.) (Note 1)

PARAMETER

DC CHARACTERISTICS

Supply Voltage

Supply Current

LOGIC INPUT (EN)

Logic Threshold Low

Logic Threshold High

Leakage Current

LOGIC OUTPUT

INVALID

Output Voltage Low

INVALID

Output Voltage High

RECEIVER INPUT

Input Voltage Range

Input Threshold Low

Input Threshold High

Input Hysteresis

RIN Threshold to

INVALID

Output High

RIN Threshold to

INVALID

Output Low

Input Resistance

RECEIVER OUTPUT

Output Leakage Current

Output Voltage Low

Output Voltage High

I

ROUT

V

OL

V

OH

Receiver disabled

I

SINK

= 1.6mA

I

SOURCE

= 1.0mA

V

CC

-

0.6

V

CC

-

0.1

±0.05

±10

0.4

µA

V

RIN

V

ITL

V

ITH

V

HYST

V

ITOH

V

ITOL

R

RIN

Positive threshold

Negative threshold

-2.7

-0.3

3

5

0.3

7

V

CC

= 3.3V

V

CC

= 5.0V

V

CC

= 3.3V

V

CC

= 5.0V

-25

0.6

0.8

1.2

1.5

1.8

300

2.7

2.4

2.7

25

V

mV

V

kΩ

V

IOL

V

IOH

I

SINK

= 1.6mA

I

SOURCE

= 1.0mA

V

CC

-

0.6

0.4

V

IL

V

IH

I

EN

V

CC

= 3.3V

V

CC

= 5.0V

2.0

2.4

±0.01

±1.0

0.8

V

µA

V

CC

I

CC

V

CC

= 3.3V or 5V, RIN = V

CC

or GND, no load

3.0

0.5

5.5

5

V

µA

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

2

_______________________________________________________________________________________

+3V to +5.5V, 1.5Mbps

RS-232 Receivers in SOT23-5

MAX3180–MAX3183

ELECTRICAL CHARACTERISTICS (continued)

(V

CC

= +3.0V to +5.5V, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

CC

= +5.0V and T

A

= +25°C.) (Note 1)

PARAMETER

TIMING CHARACTERISTICS

Maximum Data Rate

Receiver Propagation Delay,

High-to-Low

Receiver Propagation Delay,

Low-to-High

Receiver Skew

Receiver Output Enable Time

Receiver Output Disable Time

Receiver Positive or Negative

Threshold to

INVALID

High

Receiver Positive or Negative

Threshold to

INVALID

Low

t

PHL

t

PLH

t

RS

t

ROE

t

ROD

t

INVH

t

INVL

C

L

= 50pF

RIN to ROUT; C

L

= 150pF

RIN to ROUT; C

L

= 150pF

1.5

0.15

50

200

250

30

Mbps

µs

ns

µs

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

|

t

PHL

- t

PLH

|

, Figure 1

Note 1:

Specifications are 100% tested at T

A

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

Typical Operating Characteristics

(V

CC

= +5V, T

A

= +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. DATA RATE

MAX3180-01

RIN TO INVALID HIGH vs. SUPPLY VOLTAGE

MAX3180-02

0.7

0.6

SUPPLY CURRENT (mA)

0.5

0.4

0.3

V

CC

= 3.3V

0.2

0.1

0

0.5

1.0

R

L

= 50kΩ

C

L

= 100pF

350

330

310

t

INVH

(ns)

V

CC

= 5V

290

270

250

230

1.5

3.0

3.5

4.0

4.5

5.0

5.5

DATA RATE (Mbps)

V

CC

(V)

_______________________________________________________________________________________

3

+3V to +5.5V, 1.5Mbps

RS-232 Receivers in SOT23-5

MAX3180–MAX3183

Typical Operating Characteristics (continued)

(V

CC

= +5V, T

A

= +25°C, unless otherwise noted.)

MAX3180

ENABLE ASSERTION TO ROUT RESPONSE

10V

RIN

0

MAX3180-04

RIN TO INVALID LOW vs. SUPPLY VOLTAGE

MAX3180-03

60

55

50

t

INVL

(µs)

45

20V

-10V

5V

40

35

30

25

3.0

3.5

4.0

4.5

5.0

5.5

500ns/div

V

CC

(V)

ENABLE

0

ROUT

0

5V

V

CC

= 5.0V

R

L

= 50kΩ

C

L

= 100pF

Pin Description

NAME

MAX3180

EN

1

–

2

3

–

4

5

RIN

V

CC

–

RIN

V

CC

ROUT

RIN

V

CC

ROUT

RIN

V

CC

Noninverting Receiver Output

Receiver Input

Supply Voltage

GND

ROUT

MAX3181

–

INVALID

GND

ROUT

MAX3182

EN

–

GND

–

MAX3183

–

INVALID

GND

–

Receiver Output Enable

Output of the Valid Input Detector

Ground

Inverting Receiver Output

FUNCTION

4

_______________________________________________________________________________________

+3V to +5.5V, 1.5Mbps

RS-232 Receivers in SOT23-5

Detailed Description

The MAX3180–MAX3183 are EIA/TIA-232 and V.28/

V.24 communications receivers that convert RS-232

signals to CMOS logic levels. The devices operate on a

supply voltage of +3V to +5.5V and have a 1.5Mbps

data rate capability. They achieve a 0.5µA typical sup-

ply current. The MAX3180/MAX3182 have a receiver

enable control (EN), while the MAX3181/MAX3183 con-

tain a signal invalid output (INVALID). The MAX3180/

MAX3181 invert the ROUT signal relative to RIN. The

MAX3182/MAX3183 are not inverted. The devices

come in SOT23-5 packages.

Signal Invalid Detector

If no valid signal levels appear on RIN for 30µs (typ),

INVALID

goes low. This event typically occurs if the RS-

232 cable is disconnected or if the connected peripher-

al transmitter is turned off.

INVALID

goes high when a

valid level is applied to the RS-232 receiver input.

Figure 2 shows the input levels and timing diagram for

INVALID

operation.

MAX3180–MAX3183

Enable Input

The MAX3180/MAX3182 feature an enable input. Drive

EN

high to force ROUT into a high-impedance state. In

this state, the devices ignore incoming RS-232 signals.

Drive

EN

low for normal operation.

Power-Supply Decoupling

5V

RIN

0

t

PLH

V

OH

ROUT

V

OL

50%

t

PHL

50%

In most circumstances, a 0.1µF V

CC

bypass capacitor

is adequate for power-supply decoupling. Connect the

bypass capacitor as close to the IC as possible.

Chip Information

TRANSISTOR COUNT: 41

Figure 1. Receiver Propagation-Delay Timing

VALID SIGNALS (INVALID = 1)

RECEIVER INPUT LEVELS

+2.7V

INDETERMINATE

+0.3V

0

-0.3V

INDETERMINATE

-2.7V

VALID SIGNALS (INVALID = 1)

INVALID SIGNALS (INVALID = 0)

RECEIVER

INPUT

VOLTAGE

(V)

INVALID

REGION

V

CC

INVALID

OUTPUT

(V)

0

t

INVL

t

INVH

Figure 2. Input Levels and

INVALID

Timing

_______________________________________________________________________________________

5

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