Maxim MAX3183EEUK-T, MAX3182EEUK-T, MAX3181EEUK-T, MAX3180EEUK-T Datasheet

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General Description

The MAX3180E–MAX3183E single RS-232 receivers in
a SOT23-5 package are designed for space- and cost­constrained applications requiring minimal RS-232
communications. The receiver inputs are protected to
±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV
using IEC 1000-4-2 Contact Discharge, and to ±15kV
per the Human Body Model, ensuring compliance with
international standards.

The devices minimize power and heat dissipation by
consuming only 0.5µA supply current from a +3.0V to
+5.5V supply, and they guarantee true RS-232 perfor­mance up to a 1.5Mbps data rate. The MAX3180E/
MAX3182E feature a three-state TTL/CMOS receiver
output that is controlled by an EN logic input. The
MAX3181E/MAX3183E feature an INVALID output that
indicates valid RS-232 signals at the receiver input for
applications requiring automatic system wake-up. The
MAX3182E/MAX3183E have a noninverting output,
while the MAX3180E/MAX3181E have a standard
inverting output.

Applications

Diagnostic Ports
Telecommunications
Networking Equipment
Set-Top Boxes
Digital Cameras
Hand-Held Equipment

Features

♦ Tiny SOT23-5 Package
♦ ESD-Protected RS-232 Input

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

♦ 0.5µA Supply Current
♦ 1.5Mbps Guaranteed Data Rate
♦ Meets EIA/TIA-232 and V.28/V.24 Specifications

Down to V

CC

= +3.0V

♦ INVALID Output Indicates Valid RS-232 Signal at

Receiver Input (MAX3181E/MAX3183E)

♦ Three-State TTL/CMOS Receiver Output

(MAX3180E/MAX3182E)

♦ Noninverting RS-232 Output

(MAX3182E/MAX3183E)

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

________________________________________________________________

Maxim Integrated Products

1

19-1479; Rev 1; 7/99

PART

MAX3180EEUK-T

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

5 SOT23-5

Pin Configurations/Functional Diagrams appear at end of
data sheet.

Selector Guide

Ordering Information

TOP

MARK

ACHB

MAX3181EEUK-T

-40°C to +85°C 5 SOT23-5 ACHC

MAX3182EEUK-T

-40°C to +85°C 5 SOT23-5 ACHD

MAX3183EEUK-T

-40°C to +85°C 5 SOT23-5 ACHE

ESD

PROTECTION

(kV)

MAX3180E ±15

PART PACKAGE

SOT23-5

SUPPLY

CURRENT

(µA)

0.5

EN

INPUT

✓

INVALID

OUTPUT

—

INVERTING

ROUT

✓

NON-

INVERTING

ROUT

—

MAX3181E ±15 SOT23-5 0.5 —

✓ ✓

—

MAX3182E ±15 SOT23-5 0.5

✓

— —

✓

MAX3183E ±15 SOT23-5 0.5 —

✓

—

✓

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +3.0V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5.0V, TA= +25°C.) (Note 1)

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 +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

VCC= 3.3V or 5V, RIN = VCCor GND, no load

Negative threshold

Positive threshold

VCC= 5.0V

VCC= 3.3V

I

SINK

= 1.6mA

VCC= 5.0V

VCC= 3.3V

VCC= 3.3V
VCC= 5.0V

CONDITIONS

kΩ357R

RIN

Input Resistance

V-0.3 0.3V

ITOL

RIN Threshold to INVALID
Output Low

V

-2.7

V

ITOH

2.7

RIN Threshold to INVALID
Output High

mV300V

HYST

Input Hysteresis

V

1.8 2.7

V

ITH

Input Threshold High

1.5 2.4

V

0.8 1.5

V

ITL

Input Threshold Low

0.6 1.2

V-25 25V

RIN

Input Voltage Range

µA0.5 5.0I

CC

Supply Current

V3.0 5.5V

CC

Supply Voltage

V0.4V

IOL

INVALID Output Voltage Low

µA±0.01 ±1.0I

EN

Leakage Current

V0.8V

IL

Logic Threshold Low

2.0
V

2.4

V

IH

Logic Threshold High

UNITSMIN TYP MAXSYMBOLPARAMETER

I

SINK

= 1.6mA

Receiver disabled

V0.4V

OL

Output Voltage Low

µA±0.05 ±10I

ROUT

Output Leakage Current

I

SOURCE

= 1.0mA V

VCC- VCC-

0.6 0.1

V

OH

Output Voltage High

I

SOURCE

= 1.0mA V

VCC-

0.6

V

IOH

INVALID Output Voltage High

DC CHARACTERISTICS

LOGIC INPUT (EN)

LOGIC OUTPUT

RECEIVER INPUT

RECEIVER OUTPUT

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +3.0V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5.0V, TA= +25°C.) (Note 1)

CONDITIONS

|

t

PHL

- t

PLH

|

, Figure 1

UNITSMIN TYP MAXSYMBOLPARAMETER

CL= 50pF

ns200t

ROE

Receiver Output Enable Time

ns50t

RS

Receiver Skew

Mbps1.5Maximum Data Rate

ns250t

INVH

Receiver Positive or Negative
Threshold to INVALID High

ns200t

ROD

Receiver Output Disable Time

RIN to ROUT; CL= 150pF µs0.15t

PHL

Receiver Propagation Delay,
High-to-Low

RIN to ROUT; CL= 150pF µs0.15t

PLH

Receiver Propagation Delay,
Low-to-High

µs30t

INVL

Receiver Positive or Negative
Threshold to INVALID Low

Typical Operating Characteristics

(VCC= +5V, TA= +25°C, unless otherwise noted.)

0

0.2

0.1

0.4

0.3

0.6

0.5

0.7

0 0.5 1.0 1.5

SUPPLY CURRENT vs. DATA RATE

MAX3180E-01

DATA RATE (Mbps)

SUPPLY CURRENT (mA)

R

L

= 50kΩ

C

L

= 100pF

VCC = 5V

VCC = 3.3V

230

270

250

290

330

310

350

3.0 3.5 5.04.54.0 5.5

RIN TO INVALID HIGH

vs. SUPPLY VOLTAGE

MAX3180E-02

VCC (V)

t

INVH

(ns)

TIMING CHARACTERISTICS

Note 1: Specifications are 100% tested at TA= +25°C. Limits over temperature are guaranteed by design.

Detailed Description

The MAX3180E–MAX3183E are EIA/TIA-232 and V.28/
V.24 communications receivers that convert RS-232
signals to CMOS logic levels. They operate on a +3V to
+5.5V supply, have 1.5Mbps data rate capability, and
feature enhanced electrostatic discharge (ESD) protec­tion (see

ESD Protection

). All of these devices achieve
a typical supply current of 0.5µA. The MAX3180E/
MAX3182E have a receiver enable control (EN). The
MAX3181E/MAX3183E contain a signal invalid output
(INVALID). The MAX3180E/MAX3181E invert the ROUT
signal relative to RIN (standard RS-232). The
MAX3182E/MAX3183E outputs are not inverted. The
devices come in tiny SOT23-5 packages.

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

4 _______________________________________________________________________________________

25

35

30

45

40

55

50

60

3.0 3.5 4.0 4.5 5.0 5.5

RIN TO INVALID LOW vs. V

CC

MAX3180E-03

VCC (V)

t

INVL

(µs)

50% 50%

50%

0

RIN

5V

ROUT

50%

t

PLH

t

PHL

V

OH

V

OL

Typical Operating Characteristics (continued)

(VCC= +5V, TA= +25°C, unless otherwise noted.)

5V

0

10V

0

-10V

RIN

ROUT

ENABLE

5V

0

500ns/div

MAX3180E

ENABLE ASSERTION TO ROUT RESPONSE

MAX3180E-04

VCC = 5.0V
R

L

= 50kΩ

C

L

= 100pF

1

EN

Receiver Output Enable

Pin Description

NAME

EN

MAX3180E

FUNCTION

MAX3182E

PIN

– Output of the Valid Input Detector

–

2 GND GroundGND

3

ROUT Inverting Receiver Output–

4 RIN Receiver InputRIN

5 V

CC

Supply VoltageV

CC

Figure 1. Receiver Propagation-Delay Timing

– Noninverting Receiver OutputROUT

MAX3181E MAX3183E

–

INVALID

GND

ROUT

–

RIN

V

CC

–

INVALID

GND

–

ROUT

RIN

V

CC

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
peripheral 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.

Enable Input

The MAX3180E/MAX3182E feature an enable input
(EN). Drive EN high to force ROUT into a high-imped­ance state. In this state, the devices ignore incoming
RS-232 signals. Pull EN low 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
receiver inputs of the MAX3180E–MAX3183E have extra
protection against static electricity. Maxim’s engineers
have developed state-of-the-art structures enabling
these pins to withstand ESD up to ±15kV without dam­age or latchup. The receiver inputs of the MAX3180E–
MAX3183E are 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 speci-

fied in IEC 1000-4-2

Human Body Model

Figure 3 shows the Human Body Model, and Figure 4
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.

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

_______________________________________________________________________________________ 5

CHARGE-CURRENT

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE
CAPACITOR

C

s

100pF

R

C

1MΩ

R

D

1500Ω

HIGH-

VOLTAGE

DC

SOURCE

DEVICE

UNDER

TEST

Figure 3. Human Body ESD Test Model

IP 100%

90%

36.8%

t

RI

TIME

t

DL

CURRENT WAVEFORM

PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)

I

r

10%

0

0

AMPERES

Figure 4. Human Body Model Current Waveform

VALID SIGNALS

INVALID SIGNALS

VALID SIGNALS

RECEIVER INPUT LEVELS

-2.7V

-0.3V

+2.7V

+0.3V

0

INDETERMINATE

INDETERMINATE

0

V

CC

t

INVL

INVALID
REGION

RECEIVER

INPUT

VOLTAGE

(V)

INVALID
OUTPUT

(V)

t

INVH

Figure 2. Input Levels and INVALID Timing

MAX3180E–MAX3183E

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 MAX3180E–MAX3183E enable the
design of equipment that meets the highest level (Level

4) of IEC 1000-4-2 without the need for additional ESD­protection 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 5
shows the IEC 1000-4-2 model, and Figure 6 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, a 0.1µF VCCbypass capacitor
is adequate. Connect the bypass capacitor as close to
the IC as possible.

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

6 _______________________________________________________________________________________

CHARGE-CURRENT

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE
CAPACITOR

C

s

150pF

R

C

50MΩ TO 100MΩ

R

D

330Ω

HIGH-

VOLTAGE

DC

SOURCE

DEVICE
UNDER

TEST

Figure 5. IEC 1000-4-2 ESD Test Model

tR= 0.7ns TO 1ns

30ns

60ns

t

100%

90%

10%

I

PEAK

I

Figure 6. IEC 1000-4-2 ESD Generator Current Waveform

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

_______________________________________________________________________________________ 7

Pin Configurations/Functional Diagrams

___________________Chip Information

TRANSISTOR COUNT: 41

GND

RINROUT

15

5k

V

CC

( ) ARE FOR MAX3181E/MAX3183E ONLY.

EN (INVALID)

MAX3180E
MAX3181E

SOT23-5

TOP VIEW

2

34

GND

RINROUT

15

5k

V

CC

EN (INVALID)

MAX3182E
MAX3183E

SOT23-5

2

34

MAX3180E–MAX3183E

±15kV ESD-Protected, 0.5µA, +3V to +5.5V,

1.5Mbps RS-232 Receivers in SOT23-5

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

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Package Information

SOT5L.EPS