Maxim MAX13184E, MAX13181E Datasheet

General Description

The MAX13181E–MAX13184E are full-duplex and selectable half-/full-duplex RS-485 transceivers in a tiny 2mm x 2mm µDFN package. These devices are designed for space-constrained applications by including extended ESD protection to ±15kV per Human Body Model (HBM) and integrating pullup/pulldown resistors on the DE, RE and H/F inputs to reduce external components. The MAX13182E/MAX13184E feature a low-current shutdown mode for power-sensitive applications.

These devices have a 1/8 unit-load input receiver that allows up to 256 transceivers on the bus. The MAX13181E/MAX13182E feature reduced slew-rate drivers to minimize EMI and reflections that are caused by improperly terminated cables. The slew-rate limited MAX13181E/MAX13182E allow error-free data transmission up to 250kbps. The MAX13183E/MAX13184E feature full-speed drivers, allowing data rates of up to 16Mbps. The MAX13182E/MAX13184E are configured for fullduplex operation, while the MAX13181E/MAX13183E feature pin-selectable half- or full-duplex operation. All driver outputs and receiver inputs include extended ESD protection.

The MAX13181E–MAX13184E are available in a tiny 10pin, 2mm x 2mm µDFN. The MAX13183E/MAX13184E are also available in industry-standard 14-pin SO packages. The devices operate over the extended -40°C to +85°C temperature range.

Applications

Features

♦ Available in Tiny, 10-Pin, 2mm x 2mm, µDFN and

14-Pin SO Packages

♦ +5.0V Operation

♦ Extended ESD Protection

±15kV Human Body Model ±12kV IEC 61000-4-2 Air-Gap Disharge ±6kV IEC 61000-4-2 Contact Disharge

♦ Slew-Rate Limiting Facilitates Error-Free Data

Transmission (MAX13181E/MAX13182E)

♦ 2.5µA (typ) Low-Current Shutdown Mode

♦ 1/8-Unit Load Allows Up to 256 Transceivers on

the Bus

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

________________________________________________________________

Maxim Integrated Products

1

19-0879; Rev 0; 7/07

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.

Ordering Information

+

Denotes a lead-free package.

Industrial Control

Motor Drive Control

Telecom

Security System

Instrumentation

Selector Guide

Ordering Information continued at end of data sheet.

Pin Configurations

MAX13182E MAX13184E

1019283746

5

V

CC

RO RE DE DI

A

TOP VIEW

BZ

µDFN

+

Y GND

MAX13181E MAX13183E

1019283746

5

V

CC

RO H/F DE DI

ABZ

µDFN

Y GND

Pin Configurations continued at end of data sheet.

PART

MAX13181E Selectable 250 kbps Yes No No

MAX13182E Full 250 kbps Yes Yes Yes

MAX13183E Selectable 16 Mbps No No No

MAX13184E Full 16 Mbps No Yes Yes

HALF/FULL

DUPLEX

MAXIMUM DATA

RATE

SLEW-RATE

LIMITED

LOW-POWER

SHUTDOWN

RECEIVER

ENABLE

PART TEMP RANGE PIN-PACKAGE TOP MARK PKG CODE

MAX13181EELB+ -40°C to +85°C 10 µDFN ABC L1022-1

MAX13182EELB+ -40°C to +85°C 10 µDFN ABD L1022-1

MAX13182EESD+ -40°C to +85°C 14 SO — S14-1

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +5V ±10%, TA=T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and 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.

(All voltages referenced to GND.) Supply Voltage (V

CC

) ...............................................-0.3V to +6V

Control Voltage (RE, DE, DI, H/F).............................-0.3V to +6V

Driver Output Voltage (A, B, Y, Z) ..........................-8V to +12.5V

Receiver Input Voltage (A, B).................................-8V to +12.5V

Receiver Input Voltage Full-Duplex (A, B)..............-8V to +12.5V

Receiver Output Voltage (RO)................... -0.3V to (V

CC

+ 0.3V)

Short-Circuit Duration (A, B, Y, Z) to GND .................Continuous

Continuous Power Dissipation (T

A

= +70°C)

10-Pin µDFN (derate 5mW/°C above +70°C ) .............403mW

14-Pin SO (derate 8.3mW/°C above +70°C )...............667mW

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

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

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DRIVER

Differential Driver Output V

Change in Magnitude of Differential Output Voltage

Driver Common-Mode Output Voltage V

Change in Magnitude of Common-Mode Voltage

Input-High Voltage V

Input-Low Voltage V

Input Hysteresis V

Internal Pullup Resistance R

Internal Pulldown Resistance R

Output Leakage (Y and Z) Full-Duplex

Driver Short-Circuit Output Current Threshold (Note 3)

Driver Short-Circuit Foldback Output Current (Note 3)

Thermal-Shutdown Threshold T

Thermal-Shutdown Hysteresis T

Input Current (A and B) I

RL = 100Ω (RS422), Figure 1 2 V

RL = 54Ω (RS485), Figure 1 1.5 V

OD

No load V

ΔV

IN_UP

IN_DWN

I

OSD

I

OSDF

A, B

RL = 100Ω or 54Ω, Figure 1, (Note 2) 0.2 V

OD

RL = 100Ω or 54Ω, Figure 1 V

OC

RL = 100Ω or 54Ω, Figure 1, (Note 2) 0.2 V

OC

DE, DI, RE, H/F 2V

IH

DE, DI, RE, H/F 0.8 V

IL

DE, DI, RE, H/F 100 mV

HYS

Internal pullup RE 125 400 kΩ Internal pulldown DE, H/F 125 400 kΩ

DE = GND, VCC = GND or

I

O

5.5V

0 ≤ V

-7 ≤ V

(VCC - 1V) ≤ V

-7V ≤ V

0 ≤ V

TS

15 °C

TSH

D E = GN D , V

5.5V

≤ 12V 40 250

OUT

≤ V

OUT

CC

≤ 12V 20

OUT

≤ 1V -20

OUT

≤ 12V 140 °C

OUT

= GN D or

C C

VIN = +12V 125

= -7V -100

V

IN

VIN = +12V 125

V

= -7V -100

IN

CC

/ 2 3 V

CC

-250 -40

V

µA

mA

µA

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V ±10%, TA=T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)

DRIVER SWITCHING CHARACTERISTICS—MAX13181E/MAX13182E (SLEW-RATE LIMITED TO 250kbps)

(VCC= +5V ±10%, TA=T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RECEIVER

Receiver Differential Threshold Voltage

Receiver Input Hysteresis V

RO Output-High Voltage V

RO Output-Low Voltage V

Tri-State Output Current at Receiver I

Receiver-Input Resistance R

Receiver-Output Short-Circuit Current I

SUPPLY CURRENT

Supply Current I

Shutdown Current (MAX13182E/MAX13184E Only)

ESD PROTECTION

ESD Protection for Y, Z, A and B

V

OZR

OSR

I

SHDN

-7V ≤ VCM ≤ +12V, Figure 2 -200 0 +200 mV

TH

VA + VB = 0, Figure 2 25 mV

TH

OHIO

OL

IN

CC

= -1mA, Figure 2

IO = 1mA, Figure 2 0.4 V

0 ≤ VO ≤ VCC, Figure 2 -1 +1 µA

-7V ≤ VCM ≤ +12V, Figure 2 96 kΩ

0 ≤ VRO ≤ VCC, Figure 2 -80 +80 mA

No load, RE = 0, DE = V No load, RE = VCC, DE = V

No load, RE = 0V, DE = 0 or leave unconnected

RE = V DE = GND or leave unconnected

Human Body Model ±15

IEC 61000-4-2 Contact Discharge ±6

IEC 61000-4-2 Air-Gap Discharge ±12

or leave unconnected,

CC

V

-

CC

0.6

23

2.5 10 µA

V

mA

kV

Driver Propagation Delay

Driver Differential Output Rise or Fall Time

Differential Driver Output Skew (t

DPLH

Maximum Data Rate 250 kbps

Driver Enable to Output High t

Driver Enable to Output Low t

Driver Disable Time from Low t

Driver Disable Time from High t

D r i ver E nab l e fr om S hutd ow n to Outp ut H i g ht

D r i ver E nab l e fr om S hutd ow n to Outp ut Low t

Time to Shutdown t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

- t

)

DPHL

t

DPLH

t

DPHL

t

, t

DR

t

DSKEW

DZH

DZL

DLZ

DHZ

DZH(SHDN

DZL(SHDN

SHDN

CL = 50pF, RL = 54Ω, Figure 3 200 1000

CL = 50pF, RL = 54Ω, Figure 3 400 1200 ns

DF

CL = 50pF, RL = 54Ω, Figure 3 140 ns

Figure 4a 2500 ns

Figure 4b 2500 ns

Figure 4b 100 ns

Figure 4a 100 ns

(MAX13182E) Figure 4a 5500 ns

(MAX13182E) Figure 4b 5500 ns

(MAX13182E) 50 200 600 ns

ns

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

4 _______________________________________________________________________________________

DRIVER SWITCHING CHARACTERISTICS—MAX13183E/MAX13184E (MAXIMUM DATA RATE OF 16Mbps)

(VCC= +5V ±10%, TA=T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)

(

)

(

)

RECEIVER SWITCHING CHARACTERISTICS

(VCC= +5V ±10%, TA=T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Note 1)

(

)

(

)

Note 1: All currents into the device are positive. All currents out of the device are negative. All voltages are referred to device ground,

unless otherwise noted. µDFN devices are production tested at +25°C. Overtemperature limits are guaranteed by design.

Note 2: ΔV

OD

and ΔVOCare the changes in VODand VOC, respectively, when the DI input changes state.

Note 3: The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback output

current applies during current limiting to allow a recovery from bus contention.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Driver Propagation Delay

D r i ver D i ffer enti al Outp ut Ri se or Fal l Ti m etDR, t

Differential Driver Output Skew (t

- t

DPHL

)

DPLH

Maximum Data Rate 16 Mbps

Driver Enable to Output-High t

Driver Enable to Output-Low t

Driver Disable Time from Low t

Driver Disable Time from High t

Driver Enable from Shutdown to Output High

Driver Enable from Shutdown to Output Low

Time to Shutdown t

t

DZH

t

DZL

t

DPLH

t

DPHL

t

DSKEW

DZH

DZL

DLZ

DHZ

SHDN

CL = 50pF, RL = 54Ω, Figure 3 25

CL = 50pF, RL = 54Ω, Figure 3 15 ns

DF

CL = 50pF, RL = 54Ω, Figure 3 8 ns

Figures 1 and 4a 50 ns

Figures 1 and 4b 50 ns

Figures 1 and 4a 50 ns

Figures 1 and 4a (MAX13184E) 2200 ns

Figures 1 and 4b (MAX13184E) 2200 ns

(MAX13184E) 50 200 600 ns

ns

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Receiver Propagation Delay

Receiver Output Skew (t

Maximum Data Rate 16 Mbps

Receiver Enable to Output Low t

Receiver Enable to Output High t

Receiver Disable Time from Low t

Receiver Disable Time from High t

Receiver Enable from Shutdown to Output High

Receiver Enable from Shutdown to Output Low

RPLH

t

- t

)t

RPHL

t

RZH

t

RZL

RPLH

t

RPHL

RSKEW

RZL

RZH

RLZ

RHZ

SHDN

CL = 15pF, Figure 5

CL = 15pF, Figure 5 8 ns

(MAX13182E/MAX13184E) Figures 2 and 6

40 75

50 ns

2200 ns

ns

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

_______________________________________________________________________________________ 5

Figure 1. Driver Differential Output

Figure 2. Receiver Differential Input

Figure 3. Driver Propagation Delay

Figure 4a. Driver Enable and Disable Times (t

DHZ

, t

DZH

, t

DZH(SHDN)

)

Y

V

OD

Z

C

L

R

L

2

R

L

V

OC

2

3V

DI

V

DIFF

1.5V

0

Z

V

O

Y

1/2 V

O

V

O

0

10%

-V

O

t

DR

90%

t

DSKEW

t

DPLH

V

= | t

DIFF

DPLH

t

DPHL

= V (Y) - V (Z)

- t

DPHL

t

A (Y)

B (Z)

1/2 V

O

90%

DF

10%

V

OH

V

OL

RO

GND

C

L

0 OR 3V

GENERATOR 50Ω

DE

OUT

t

DZH

, t

DZH(SHDN)

D

= (0 + VOH) / 2

V

OM

S1

OUT

C

L

50pF

t

DHZ

R

L

VCC / 2

0.5V

= 500Ω

V

CC

0

V

OH

0

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

6 _______________________________________________________________________________________

Figure 4b. Driver Enable and Disable Times (t

DLZ

, t

DZL

, t

DZL(SHDN)

)

Figure 5. Receiver Propagation Delay

V

CC

R

= 500Ω

DLZ

L

VCC / 2

OUT

0.5V

V

CC

0

V

OH

V

OUT

0 OR 3V

GENERATOR 50Ω

DE

CC

t

DZL

V

OL

, t

DZL(SHDN)

D

DE

= (VOL + VCC) / 2

V

OM

S1

C

L

50pF

t

A (Y)

B (Z)

RO

1.5V

t

RSKEW

t

RPLH

V

OH

V

OL

THE RISE TIME AND FALL TIME OF INPUTS A, B, Y AND Z < 4ns

= | t

RPLH

+1V

-1V

t

RPHL

- t

|

RPHL

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

_______________________________________________________________________________________ 7

Figure 6. Receiver Disable Time

+1.5V

-1.5V

S1 OPEN

S2 CLOSED

S3 = +1.5V

RE

RO

S3

GENERATOR

t

RZH

, t

RZH(SHDN)

V

ID

VOH / 2

C 15pF

1kΩ

L

RE

RO

R

50Ω

5V

0

V

OH

0

S1

S2

S1 CLOSED

S2 OPEN

S3 = -1.5V

t

RZL

5V

, t

RZL(SHDN)

1.5V

(VOL + VOH) / 2

5V

0

V

CC

V

OL

RE

0.5V

RO

2.5V

t

RHZ

S1 OPEN

S2 CLOSED

S3 = +1.5V

S1 CLOSED

S2 OPEN

5

0

V

OH

0

RE

t

RLZ

RO

S3 = -1.5V

2.5V

0.5V

5V

0

5V

V

OL

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

8 _______________________________________________________________________________________

Typical Operating Characteristics

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

0

1

3

2

4

5

-40 10-15 35 60 85

SUPPLY CURRENT

vs. TEMPERATURE

MAX13181E-4E toc01

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

NO LOAD RE = V

CC

DE = V

CC

0

4

12

8

16

20

021345

OUTPUT CURRENT

vs. RECEIVER OUTPUT HIGH VOLTAGE

MAX13181E-4E toc02

RECEIVER OUTPUT HIGH VOLTAGE (V)

OUTPUT CURRENT (mA)

0

6

18

12

24

30

021345

OUTPUT CURRENT

vs. RECEIVER OUTPUT LOW VOLTAGE

MAX13181E-4E toc03

RECEIVER OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

4.0

4.4

4.2

4.8

4.6

5.2

5.0

5.4

-40 10-15 356085

RECEIVER OUTPUT HIGH VOLTAGE

vs. TEMPERATURE

MAX13181E-4E toc04

TEMPERATURE (°C)

RECEIVER OUTPUT HIGH VOLTAGE (V)

IO = -1mA

0

0.1

0.3

0.2

0.4

0.5

-40 10-15 35 60 85

RECEIVER OUTPUT LOW VOLTAGE

vs. TEMPERATURE

MAX13181E-4E toc05

TEMPERATURE (°C)

RECEIVER OUTPUT LOW VOLTAGE (V)

IO = -1mA

80

60

40

20

0

021 345

DRIVER DIFFERENTIAL OUTPUT CURRENT

vs. DIFFERENTIAL OUTPUT VOLTAGE

MAX13181E-4E toc06

DIFFERENTIAL OUTPUT VOLTAGE (V)

DRIVER DIFFERENTIAL OUTPUT CURRENT (mA)

0

1

3

2

4

5

-40 10-15 35 60 85

DRIVER DIFFERENTIAL OUTPUT VOLTAGE

vs. TEMPERATURE

MAX13181E-4E toc07

TEMPERATURE (°C)

DRIVER DIFFERENTIAL OTUPUT VOLTAGE (V)

RL = 54Ω

0

20

40

60

80

OUTPUT CURRENT

vs. TRANSMITTER OUTPUT HIGH VOLTAGE

MAX13181E-4E toc08

TRANSMITTER OUTPUT HIGH VOLTAGE (V)

OUTPUT CURRENT (mA)

-8 -2 0-6 -4 2 4 6

0

40

20

80

60

100

120

OUTPUT CURRENT

vs. TRANSMITTER OUTPUT LOW VOLTAGE

MAX13181E-4E toc09

TRANSMITTER OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

046281012

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

_______________________________________________________________________________________

9

Typical Operating Characteristics (continued)

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

0

2

6

4

8

10

-40 10-15 35 60 85

SHUTDOWN CURRENT

vs. TEMPERATURE

MAX13181E-4E toc10

TEMPERATURE (°C)

SHUTDOWN CURRENT (μA)

200

300

500

400

600

700

-40 10-15 35 60 85

DRIVER PROPAGATION DELAY

vs. TEMPERATURE (250kbps) (MAX13182E)

MAX13181E-4E toc11

TEMPERATURE (°C)

DRIVER PROPAGATION DELAY (ns)

CL = 50pF R

L

= 54Ω

t

DPHL

t

PDLH

0

10

30

20

40

50

-40 10-15 35 60 85

DRIVER PROPAGATION DELAY

vs. TEMPERATURE (16Mbps) (MAX13184E)

MAX13181E-4E toc12

TEMPERATURE (°C)

DRIVER PROPAGATION DELAY (ns)

CL = 50pF R

L

= 54Ω

t

DPHLtPDLH

DRIVER PROPAGATION DELAY

(250kbps) (MAX13182E)

MAX13181E-4E toc16

400ns/div

V

Y

- V

Z

2V/div

DI 2V/div

CL = 50pF R

L

= 54Ω

RECEIVER PROPAGATION DELAY

(16Mbps) (MAX13184E)

MAX13181E-4E toc17

10ns/div

V

A

- V

B

2V/div

RO 2V/div

CL = 15pF

DRIVER PROPAGATION DELAY

(16Mbps) (MAX13184E)

MAX13181E-4E toc18

10ns/div

V

Y

- V

Z

2V/div

DI 2V/div

CL = 50pF R

L

= 54Ω

0

10

30

20

40

50

-40 10-15 35 60 85

RECEIVER PROPAGATION DELAY

vs. TEMPERATURE (250kbps) (MAX13182E)

MAX13181E-4E toc13

TEMPERATURE (°C)

RECEIVER PROPAGATION DELAY (ns)

CL = 15pF

t

RPLH

t

RPHL

0

10

30

20

40

50

-40 10-15 35 60 85

RECEIVER PROPAGATION DELAY

vs. TEMPERATURE (16Mbps) (MAX13184E)

MAX13181E-4E toc14

TEMPERATURE (°C)

RECEIVER PROPAGATION DELAY (ns)

CL = 15pF

t

RPLH

t

RPHL

RECEIVER PROPAGATION DELAY

(250kbps) (MAX13182E)

MAX13181E-4E toc15

400ns/div

V

A

- V

B

2V/div

RO 2V/div

CL = 15pF

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

10 ______________________________________________________________________________________

X = Don’t care.

Functional Tables

MAX13182E/MAX13184E

MAX13181E/MAX13183E

MAX13182E MAX13184E

R

IN_UP

R

IN_DWN

R

IN_DWN

V

CC

RO

GND

RE

DE

DI

Y

Z

B

A

MAX13181E MAX13183E

V

CC

RO

H/F

GND

DI

A

B

Y

Z

R

IN_DWN

V

CC

D

R

Functional Diagram

TRANSMITTING

INPUT OUTPUT

RE DE DI Z Y

X10 1 0

X11 0 1

00X

10X

High

impedance

Shutdown

(high impedance)

RECEIVING

INPUT OUTPUT

RE DE A-B RO

0X≥ 200mV 1

0X≤ - 200m V 0

1 1 X High impedance

10X

Shutdown

(high impedance)

High

impedance

TRANSMITTING

INPUT OUTPUT

DE DI Z Y

10 10

11 01

0X

impedance

High

impedance

RECEIVING

INPUT OUTPUT

H/F DE A-B Y-Z RO

0X≥ 200mV X 1

0X≤ - 200m V X 0

10X≥ 200mV 1

10X≤ -200mV 0

Detailed Description

The MAX13181E–MAX13184E high-speed transceivers for RS-485 communication contain one driver and one receiver. These devices feature 1/8 unit-load input impedance that allows up to 256 receivers on the bus. All devices feature integrated pullup/pulldown resistors on the DE, RE, and H/F inputs to reduce external components. The MAX13182E/MAX13184E feature a lowcurrent shutdown mode for power-sensitive applications.

The MAX13181E/MAX13182E feature reduced slew-rate drivers to minimize EMI and reflections that are caused by improperly terminated cables. The slew-rate limited MAX13181E/MAX13182E allow error-free transmission up to 250Kbps. The MAX13183E/MAX13184E feature full-speed drivers allowing data rate of up to 16Mbps.

The MAX13182E/MAX13184E are configured for fullduplex operation. The MAX13181E/MAX13183E feature selectable half- or full-duplex operation by driving H/F input high or low, respectively. All devices operate from a single +5.0V supply.

±15kV ESD Protection

As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly. The driver outputs of the MAX13181E– MAX13184E family have extra protection against static electricity. Maxim’s engineers have developed state-ofthe-art structures to protect these driver outputs against ESD of ±15kV with VCC= 5V, and regardless of the logic state of DE and DI.

The ESD-protected pins are tested with reference to the ground pin in a powered-down condition. They are tested to ±15kV using the Human Body Model, ±12kV using the IEC 61000-4-2 Air-Gap Discharge Model, and to ±6kV using the IEC 61000-4-2 Contact Discharge Model.

ESD Test Conditions

ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results.

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

______________________________________________________________________________________ 11

Pin Description

MAX13181E/

MAX13183E

µDFN SO

FUNCTION

1114

Positive Supply, VCC = +4.5V to +5.5V. Bypass VCC with a 0.1µF ceramic capacitor to ground.

222RO

Receiver Output. When RE is low and (A-B) ≥ 200mV, RO is high; if (A-B) ≤

-200mV, RO is low.

—3 3RE

Receiver Output Enable. Drive RE low to enable RO. Drive RE high to disable the receiver. RE input has an internal pullup resistor.

3——

Half-/Full-Duplex Selector Input. Connect H/F to VCC for half-duplex mode. Leave H/F unconnected or connect H/F to GND for full-duplex mode. H/F input has an internal pulldown resistor.

444DE

D r i ver O utp ut E nab l e. D r i ve D E hi g h to enab l e the d r i ver . D r i ver outp ut i s hi g h i m p ed ance w hen D E i s l ow . D E i np ut has an i nter nal p ul l d ow n r esi stor .

555DI

Driver Input. With DE high, a low on DI forces noninverting output low and inverting output high. Similarly, a high on DI forces noninverting output high and inverting output low.

6 6 6, 7

Ground

779Y

Noninverting Driver Output. (Also noninverting receiver input in half-duplex mode.)

8 8 10 Z Inver ti ng D r i ver Outp ut. ( Al so i nver ti ng r ecei ver i np ut i n hal f- d up l ex m od e.)

9 9 11 B Inverting Receiver Input

10 10 12 A Noninverting Receiver Input

— — 1, 8, 13

No Connection. N.C. is not internally connected.

MAX13182E/ MAX13184E

MAX13182E/

MAX13184E

NAME

V

CC

H/F

GND

N.C.

MAX13181E–MAX13184E

Human Body Model

Figure 7a shows the Human Body Model, and Figure 7b 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, which is then discharged into the test device through a 1.5kΩ resistor.

Machine Model

The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The MAX13485E/MAX13486E help equipment designs to meet IEC 61000-4-2, without the need for additional ESD protection components.

The major difference between tests done using the Human Body Model and IEC 61000-4-2 is higher peak current in IEC 61000-4-2 because series resistance is lower in the IEC 61000-4-2 model. Hence, the ESD withstand voltage measured to IEC 61000-4-2 is generally lower than that measured using the Human Body Model. Figure 10c shows the IEC 61000-4-2 model, and Figure 10d shows the current waveform for the IEC 61000-4-2 ESD Contact Discharge test.

Applications Information

256 Transceiver on the Bus

The standard RS-485 receiver input impedance is 12kΩ (one-unit load), and the standard driver can drive up to 32 unit loads. The MAX13181E–MAX13184E family transceivers have a 1/8-unit load receiver input impedance (96kΩ), allowing up to 256 transceivers to be connected in parallel on one communication line. Any combination of these devices and/or other RS-485 transceivers with a total of 32 unit loads or less can be connected to the line.

Reduced EMI and Reflections

The MAX13181E/MAX13182E are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. This slew-rate limited feature allows error-free data transmission up to 250kbps.

MAX13181E/MAX13183E Low-Power

Shutdown Mode

The MAX13181E/MAX13183E feature low power shutdown mode. Low-power shutdown mode is initiated by bringing RE high and DE low. In shutdown, the devices typically draw only 2.5µA (typ) of supply current. RE and DE can be driven simultaneously. If RE is high and

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

12 ______________________________________________________________________________________

Figure 7a. Human Body ESD Test Model

Figure 7b. Human Body Current Waveform

Figure 7c. IEC 1000-4-2 ESD Test Model

Figure 7d. IEC 1000-4-2 ESD Generator Current Waveform

HIGH-

VOLTAGE

DC

SOURCE

R

C

1MΩ

CHARGE-CURRENT-

LIMIT RESISTOR

C

s

100pF

R

D

1500Ω

DISCHARGE

RESISTANCE

STORAGE CAPACITOR

DEVICE UNDER

TEST

AMPS

IP 100%

90%

36.8%

10%

PEAK-TO-PEAK RINGING

I

r

(NOT DRAWN TO SCALE)

0

t

RL

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

DEVICE

UNDER

TEST

I

100%

90%

PEAK

I

10%

tr = 0.7ns TO 1ns

30ns

60ns

t

DE is low for 200ns (typ), the devices are guaranteed to enter shutdown.

Enable times t

ZH

and tZL(see the

Switching Character-

istics

) assume the devices are not in a low-power shut-

down state. Enable times t

ZH(SHDN)

and t

ZL(SHDN)

assume the devices are in a shutdown state. It takes drivers and receivers longer to become enabled from lowpower shutdown mode (t

ZH(SHDN)

, t

ZL(SHDN)

) than from

driver-/receiver-disable mode (tZH, tZL).

Line Length

The RS-485 standard covers line lengths up to 4000ft. For line lengths greater than 4000ft, use the repeater application shown in Figure 8.

Typical Applications

The MAX13181E–MAX13184E transceivers are designed for bidirectional data communications on multipoint bus transmission lines. The MAX13181E/MAX13183E can be used in either half-duplex or full-duplex configuration. The MAX13182E/MAX13184E are for full-duplex only. Figure 9 shows the typical network application circuit for half-duplex, and Figures 10 and 11 show typical network application circuits for full duplex.

To minimize reflections, terminate the line at both ends in its characteristics impedance, and keep stub lengths off the main line as short as possible. The slew-rate-limited MAX13181E/MAX13182E are more tolerant of imperfect termination.

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

______________________________________________________________________________________ 13

Figure 8. Line Repeater for MAX13181E–MAX13184E

Figure 9. Typical Half-Duplex RS-485 Network

120Ω

DI

D

DE

RO

V

CC

H/F

MAX13181E–MAX13184E

CONFIGURED FOR HALF-

R

DUPLEX OPERATION

B

BB

D

DI RO DE

DE

A

RO

*RE

DE

DI

(H/F)

(H/F for MAX13181E/

MAX13183E ONLY)

R

B

120Ω

Z

D

Y

120Ω

*RE FOR

MAX13182E/MAX13184E

(FULL DUPLEX)

120Ω

B

D

AAA

R

D

DI

R

RO

A

R

RERE

DATA IN

DATA OUT

DE

DI

RO RE

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

14 ______________________________________________________________________________________

Figure 10. Typical Full-Duplex RS-485 Network

Figure 11. Typical Full-Duplex RS-485 Network

RO

DE

DI

D

H/F

MAX13181E/MAX13183E

CONFIGURED FOR FULL-

DUPLEX OPERATION

A

R

B

Z

Y

120Ω

YZBA

D

DI

DE

RE

R

RO

A

RO

DE

DI

R

D

B

Z

Y

120Ω

YZBA

R

D

DI

DE

RO

RE

YZBA

120Ω

Y

D

Z

B

R

A

Y

D

Z

B

R

A

DI

DE RE RO

DI

DE

RE

RO

MAX13182E/MAX13184E

CONFIGURED FOR FULL-

DUPLEX OPERATION

R

D

DI

DE

RO

RE

D

DI

R

DE

RO

RE

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

______________________________________________________________________________________ 15

Ordering Information (continued)

+

Denotes a lead-free package.

Chip Information

PROCESS: BiCMOS

Pin Configurations (continued)

MAX13182E MAX13184E

1N.C. 14 V

CC

2RO 13 N.C.

3RE 12 A

4DE 11 B

5DI 10 Z

6GND 9Y

7GND 8 N.C.

TOP VIEW

SO

+

PART TEMP RANGE PIN-PACKAGE TOP MARK PKG CODE

MAX13183EELB+ -40°C to +85°C 10 µDFN ABA L1022-1

MAX13184EELB+ -40°C to +85°C 10 µDFN ABB L1022-1

MAX13184EESD+ -40°C to +85°C 14 SO — S14-1

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

16 ______________________________________________________________________________________

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

.)

D

A

XXXX XXXX

SAMPLE MARKING

7

E

XXXX

PIN 1 INDEX AREA

b

A

A1

A2

L

e

C L

e

EVEN TERMINAL

A A

(N/2 -1) x e)

b

N

1

C

L

e

ODD TERMINAL

SOLDER MASK COVERAGE

PIN 1

0.10x45∞

L1

6, 8, 10L UDFN.EPS

L

PACKAGE OUTLINE, 6, 8, 10L uDFN, 2x2x0.80 mm

-DRAWING NOT TO SCALE-

21-0164

1

A

2

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/

Full-Duplex, RS-485 Transceiver in µDFN

______________________________________________________________________________________ 17

Package Information (continued)

(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

.)

COMMON DIMENSIONS

SYMBOL MIN. NOM.

A

A1

A2

D 1.95 2.00

E

L

L1

PACKAGE VARIATIONS

PKG. CODE N e b

0.70 0.75

0.15 0.20 0.25

0.020 0.025 0.035

1.95 2.00

0.30 0.40

MAX.

0.80

2.05

-

2.05

0.50

0.10 REF.

6L622-1 0.65 BSC 0.30±0.05

0.25±0.050.50 BSC8L822-1

0.20±0.030.40 BSC10L1022-1

(N/2 -1) x e

1.30 REF.

1.50 REF.

1.60 REF.

-DRAWING NOT TO SCALE-

PACKAGE OUTLINE, 6, 8, 10L uDFN, 2x2x0.80 mm

21-0164

2

A

2

MAX13181E–MAX13184E

+5.0V, ±15kV ESD-Protected, Half-Duplex/ Full-Duplex, RS-485 Transceiver in µDFN

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.

18

____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

SPRINGER

Package Information (continued)

(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

.)

N

HE

1

TOP VIEW

D

e

B

A

A1

C

L

FRONT VIEW

SIDE VIEW

INCHES

DIM

A1 B C e 0.050 BSC 1.27 BSC E H 0.2440.228 5.80 6.20

VARIATIONS:

D D

0∞-8∞

MAX

MIN

0.069

0.053A

0.010

0.004

0.014

0.019

0.007

0.010

0.150

0.157

0.016L

0.050

INCHES

MAX

MINDIM

0.189 0.197 AA5.004.80 8

0.337 0.344 AB8.758.55 14

0.3940.386D

MILLIMETERS

MAX

MIN

1.35

1.75

0.10

0.25

0.35

0.49

0.19

0.25

3.80 4.00

0.40 1.27

MILLIMETERS

MAX

MIN

9.80 10.00

N MS012

16

AC

SOICN .EPS

PROPRIETARY INFORMATION

TITLE:

PACKAGE OUTLINE, .150" SOIC

REV.DOCUMENT CONTROL NO.APPROVAL

21-0041

1

B

1

Maxim MAX13184E, MAX13181E Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual