MAXIM MAX1482, MAX1483 Technical data

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.

_______________General Description

The MAX1482 and MAX1483 are low-power transceivers for RS-485 and RS-422 communication. Both feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables. Data rates are guaranteed up to 250kbps.

The MAX1482/MAX1483 draw only 20µA of supply current. Additionally, they have a low-current shutdown mode that consumes only 0.1µA. Both parts operate from a single +5V supply.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.

The MAX1482 is full duplex and the MAX1483 is half duplex. Both parts have a 1⁄8-unit-load input impedance that guarantees up to 256 transceivers on the bus.

________________________Applications

Low-Power RS-485/RS-422 Networks

Transceivers for EMI-Sensitive Applications

Industrial-Control Local Area Networks

Large 256-Node LANs

____________________________Features

♦ Low 20µA Operating Current

♦ Slew-Rate Limited for Reduced EMI and

Reduced Reflections

♦ 0.1µA Low-Current Shutdown Mode

♦ Designed for RS-485 and RS-422 Applications

♦ Operate from a Single +5V Supply

♦ -7V to +12V Common-Mode Input Voltage Range

♦ Allows up to 256 Transceivers on the Bus—

Guaranteed (

1

⁄8-unit load)

♦ Current Limiting and Thermal Shutdown for

Driver Overload Protection

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

________________________________________________________________ Maxim Integrated Products 1

TOP VIEW

1

2

3

4

8

7

6

5

V

CC

B

A

GND

DI

DE

RE

RO

DIP/SO

R

D

1

2

3

4

8

7

6

5

V

CC

A

GND

DE

RE

B

RO

µMAX

DI

MAX1483

_________________Pin Configurations

MAX1483

NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH. TYPICAL OPERATING CIRCUIT SHOWN WITH DIP/SO PACKAGE.

1

2

3

4

8

5

V

CC

+5V

GND

DI

DE

RE

RO

R

D

Rt

7

6

D

R

DE

RE

DI

RO

A

B

A

_________Typical Operating Circuits

19-0367; Rev 1; 5/06

MAX1482 appears at end of data sheet.

PART

TEMP RANGE

PIN-PACKAGE

PKG

CODE

MAX1482CPD

14 PDIP

P14-3

MAX1482CSD

14 SO

S14-4

MAX1482EPD

14 PDIP

P14-3

MAX1482ESD

14 SO

S14-4

MAX1483CPA

8 PDIP P8-1

MAX1483CSA

8 SO S8-5

MAX1483CUA

8 µMAX

®

U8-1

MAX1483EPA

8 PDIP P8-1

MAX1483ESA

8 SO S8-5

Ordering Information

µMAX is a registered trademark of Maxim Integrated products, Inc.

0°C to +70°C

-40°C to +85°C

0°C to +70°C

-40°C to +85°C

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

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.

Supply Voltage (VCC)...............................................................7V

Control Input Voltages (RE, DE) .................-0.5V to (V

CC

+ 0.5V)

Driver Input Voltage (DI).............................-0.5V to (V

CC

+ 0.5V)

Driver Output Voltages ..........................................-7.5V to 12.5V

Receiver Input Voltages (A, B) ..............................-7.5V to 12.5V

Receiver Output Voltage (RO)....................-0.5V to (V

CC

+ 0.5V) Continuous Power Dissipation (T

A

= +70°C)

8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) .800mW

8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW

14-Pin SO (derate 8.33mW/°C above +70°C)................667mW

8-Pin µMAX (derate 4.10mW/°C above +70°C) .............330mW

Operating Temperature Ranges

MAX148_C_ _ .......................................................0°C to +70°C

MAX148_E_ _.....................................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

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

DC ELECTRICAL CHARACTERISTICS

(VCC= 5V ±5%, TA= T

MIN

to T

MAX

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

V

VIN= -7V

VIN= 12V

VIN= -7V

VIN= 12V

Input Current (A, B)

I

IN2

V

TH

kΩ96-7V ≤ VCM≤ 12V

R = 27Ω (RS-485), Figure 1

0.4V ≤ VO≤ 2.4V

R = 50Ω (RS-422), Figure 1

IO = 4mA, VID= -200mV

IO= -4mA, VID= 200mV

VCM= 0V

-7V ≤ VCM≤ 12V

DE, DI, –R—E

–

DE, DI, –R—E

–

MAX1483, DE = 0V, VCC= 0V or 5.25V

R = 27Ω or 50Ω, Figure 1

MAX1482, DE = 0V, VCC= 0V or 5.25V

CONDITIONS

µA±1I

OZR

Three-State (high impedance) Output Current at Receiver

V

0.4V

OL

Receiver Output Low Voltage

3.5V

OH

Receiver Output High Voltage

mV75∆V

TH

Receiver Input Hysteresis

V-0.2 0.2

Receiver Differential Threshold Voltage

-150

200

µA

-100

150

1.5 5

V

OD2

Differential Driver Output (with load)

V

25

V5V

OD1

Differential Driver Output (no load)

µA±2I

IN1

Logic Input Current

V0.8V

IL

Logic Input Low Voltage

V0.2∆V

OD

Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States

V0.2∆V

OD

Change in Magnitude of Driver Differential Output Voltage for Complementary Output States

V3V

OC

Driver Common-Mode Output Voltage

UNITSMIN TYP MAXSYMBOLPARAMETER

R

IN

Receiver Input Resistance

Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device

ground unless otherwise specified.

DE, DI, –R—E

–

V2.0V

IH

Logic Input High Voltage

MAX1482 only,

-7V < V

Y andVZ

< 12V

µA±50I

OZD

Three-State (high impedance) Output Current at Driver

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V ±5%, TA= T

MIN

to T

MAX

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

SWITCHING CHARACTERISTICS

(VCC= 5V ±5%, TA= T

MIN

to T

MAX

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

MAX1482, RE = 0V or V

CC

0V ≤ VO≤ V

CC

MAX1483, RE = 0V or V

CC

DE = 0V, RE = V

CC

DI = high or low, -7V ≤ VO≤ 12V (Note 2)

CONDITIONS

55 85

20 35

25 45

mA±7 ±95I

OSR

Receiver Short-Circuit Current

µA

20 35

I

CC

No-Load Supply Current

µA0.1 10I

SHDN

Supply Current in Shutdown

mA35 250I

OSD

Driver Short-Circuit Current

UNITSMIN TYP MAXSYMBOLPARAMETER

DE = V

CC

DE = 0V

DE = V

CC

DE = 0V

Figures 4 and 6, CL= 15pF, S2 closed

Figures 4 and 6, CL= 15pF, S1 closed

Figures 4 and 6, CL= 100pF, S1 closed

Figures 4 and 6, CL= 100pF, S2 closed

PARAMETER SYMBOL MIN TYP MAX UNITS

Driver Enable to Output High t

ZH

0.2 2

Driver Output Skew to Output

tR, t

F

0.25 2 µs

Driver Enable to Output Low t

ZL

0.1 2

µs

Driver Disable Time from Low t

LZ

0.3 3.0 µs

Driver Disable Time from High t

HZ

0.3 3.0 µs

Driver Input to Output

t

PLH

2

t

SKEW

800

µs

CONDITIONS

Figures 3 and 5, R

DIFF

= 54Ω,

CL1= CL2= 100pF

Figures 3 and 5, R

DIFF

= 54Ω, CL1= CL2= 100pF

µs

Figures 3 and 5, R

DIFF

= 54Ω, CL1= CL2= 100pF

Driver Rise or Fall Time

t

PHL

2

ns

Receiver Input to Output t

PLH

,

t

PHL

Figures 3 and 7, R

DIFF

= 54Ω, CL1= CL2= 100pF 0.25 2.25 µs

| t

PLH

- t

PHL

| Differential

Receiver Skew

t

SKD

Figures 3 and 7, R

DIFF

= 54Ω, CL1= CL2= 100pF 160 ns

Receiver Enable to Output Low t

ZL

Figures 2 and 8, CRL= 15pF, S1 closed 90 ns

Receiver Enable to Output High t

ZH

Figures 2 and 8, CRL= 15pF, S2 closed 90 ns

Receiver Disable Time from Low t

LZ

Figures 2 and 8, CRL= 15pF, S1 closed 90 ns

Receiver Disable Time from High t

HZ

Figures 2 and 8, CRL= 15pF, S2 closed 90 ns

Maximum Data Rate f

MAX

250 kbps

Time to Shutdown t

SHDN

(Note 3) 50 200 600 ns

Driver Enable from Shutdown to Output High

t

ZH(SHDN)

Figures 4 and 6, CL= 100pF, S2 closed 2 µs

Driver Enable from Shutdown to Output Low

t

ZL(SHDN)

Figures 4 and 6, CL= 100pF, S1 closed 2 µs

Receiver Enable from Shutdown to Output High

t

ZH(SHDN)

Figures 2 and 8, CL= 15pF, S2 closed, A - B = 2V

3

Receiver Enable from Shutdown to Output Low

t

ZL(SHDN)

Figures 2 and 8, CL= 15pF, S1 closed, B - A = 2V

3

µs

Note 2: Applies to peak current. See Typical Operating Characteristics. Note 3: The MAX1482/MAX1483 are put into shutdown by bringing–R—E–high and DE low. If the inputs are in this state for less

than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

4 _______________________________________________________________________________________

RECEIVER PROPAGATION DELAY

vs. TEMPERATURE

MAX1482-01

800

-40 -20 0 20 40 60 80 100

900

1000

1100

1200

1300

1400

TEMPERATURE (°C)

RECEIVER PROPAGATION DELAY (ns)

1200

400

500

-40 -20 20 80 100

DRIVER PROPAGATION DELAY

vs. TEMPERATURE

600

700

1000

1100

MAX1482-02

TEMPERATURE (°C)

DRIVER PROPAGATION DELAY (ns)

040

800

900

60

0

10

20

30

40

50

60

70

80

90

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

DRIVER OUTPUT CURRENT vs.

DIFFERENTIAL OUTPUT VOLTAGE

MAX1482-03

OUTPUT VOLTAGE (V)

OUTPUT CURRENT (mA)

DRIVER DIFFERENTIAL OUTPUT VOLTAGE

vs. TEMPERATURE

MAX1482-04

1.5

2.0

2.5

3.0

3.5

-40 -20 0 20 40 60 80 100

TEMPERATURE (°C)

DIFFERENTIAL OUTPUT VOLTAGE (V)

R = 54Ω

80

0

10

-40 -20 20 80 100

MAX1482

SUPPLY CURRENT

vs. TEMPERATURE

20

30

60

70

MAX1482-07

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

040

40

50

60

DE = V

CC

DE = 0V

0

20

40

60

80

100

120

140

0246 10812

OUTPUT CURRENT vs.

DRIVER OUTPUT LOW VOLTAGE

MAX1482-05

OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

0

20

40

60

80

100

120

-7 -6 -4 -2 0 2 4-5 -3 -1 315

OUTPUT CURRENT vs.

DRIVER OUTPUT HIGH VOLTAGE

MAX1482-06

OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

80

0

10

-40 -20 20 80 100

MAX1483

SUPPLY CURRENT

vs. TEMPERATURE

20

30

60

70

MAX1482-08

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

040

40

50

60

DE = V

CC

DE = GND

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

_______________________________________________________________________________________ 5

1, 8, 13

MAX1482

DIP/SO

FUNCTION

2 1

Receiver Output. With the receiver output enabled (RE low), RO is high if A > B by 200mV or when A and B are not connected, and RO is low if A < B by 200mV.

DIP/SO

3 2

Receiver Output Enable. When RE is low, RO is enabled. When RE is high, RO is high impedance. If RE is high and DE is low, the MAX1482/MAX1483 enter a low-power (0.1µA) shutdown state.

4 3

Driver Output Enable. The driver outputs, A and B, (Y and Z for the MAX1482) are enabled by bringing DE high. When DE is low, the driver outputs are high impedance, and the devices can function as line receivers if RE is low. If RE is high and DE is low, the parts will enter a low-power (0.1µA) shutdown state. If the driver outputs are enabled, the devices function as line drivers.

10 — Inverting Driver Output

9 — Noninverting Driver Output

6, 7 5 Ground

5 4

Driver Input. With DE high, a low on DI forces output Y low and output Z high, and a high on DI forces output Y high and output Z low.

14 8 Positive Supply: 4.75V to 5.25V

11 — Inverting Receiver Input

— 7 Inverting Receiver Input and Inverting Driver Output

12 — Noninverting Receiver Input

— 6 Noninverting Receiver Input and Noninverting Driver Output

—

MAX1483

3

4

5

—

7

6

2

—

1

—

8

—

NAME

RO

RE

DE

Z

Y

GND

DI

V

CC

B

A

N.C. No Connect—not internally connected

µMAX

______________________________________________________________Pin Description

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

6 _______________________________________________________________________________________

Figure 1. Driver DC Test Load

Figure 3. Driver/Receiver Timing Test Circuit Figure 4. Driver Timing Test Load

Figure 2. Receiver Timing Test Load

R

Y

Z

V

OD

V

OC

_________________________________________________________________Test Circuits

3V

DE

DI

Y

V

ID

Z

C

L1

R

DIFF

C

L2

A

B

RECEIVER

OUTPUT

TEST POINT

C

RL

15pF

S1

1k

S2

1k

V

CC

V

RO

RE

OUTPUT

UNDER TEST

500Ω

C

L

S1

S2

CC

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

_______________________________________________________________________________________ 7

Figure 5. Driver Propagation Delays

Figure 8. Receiver Enable and Disable TimesFigure 7. Receiver Propagation Delays

Figure 6. Driver Enable and Disable Times

DI

3V

0V

Z

Y

V

O

0V

-V

O

V

O

1.5V

t

PLH

1/2 V

O

10%

t

R

90%

t

PHL

1.5V

1/2 V

O

10%

t

F

V

DIFF

= V (Y) - V (Z)

V

DIFF

t

SKEW =

| t

PLH

- t

PHL

|

_______________________________________________________Switching Waveforms

3V

V

OH

RO

A-B

V

OL

V

ID

0V

-V

ID

1.5V

t

PHL

INPUT

OUTPUT

t

PLH

1.5V

DE

0V

Y, Z

V

Y, Z

0V

3V

RE

0V

V

CC

RO

0V

RO

0V

1.5V 1.5V

, t

t

ZL(SHDN)

ZL

2.3V

OL

1.5V 1.5V

OUTPUT NORMALLY LOW

OUTPUT NORMALLY HIGH

2.3V

t

, t

ZH(SHDN)

ZH

, t

t

ZL(SHDN)

ZL

1.5V

OUTPUT NORMALLY LOW

OUTPUT NORMALLY HIGH

1.5V

t

, t

ZH(SHDN)

ZH

t

LZ

V

+ 0.5V

OL

V

- 0.5V

OH

t

HZ

t

LZ

VOL + 0.5V

V

- 0.5V

OH

t

HZ

MAX1482/MAX1483

__________Applications Information

The MAX1482/MAX1483 are low-power transceivers for RS-485 and RS-422 communications. The MAX1482 and MAX1483 are specified for data rates of at least 250kbps. The MAX1482 is a full-duplex transceiver while the MAX1483 is half duplex. When disabled, the driver and receiver outputs are high impedance.

The 96kΩ, 1/8-unit-load receiver input impedance of the MAX1482/MAX1483 allows up to 256 transceivers on a bus, compared to the 1-unit load (12kΩ input impedance) of standard RS-485 drivers (32 transceivers maximum). Any combination of MAX1482/MAX1483 and other RS-485 transceivers with a total of 32 unit loads or less can be put on the bus.

Reduced EMI and Reflections

The MAX1482/MAX1483 are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. Figure 9 shows both the driver output waveform of a MAX1482/MAX1483 transmitting a 125kHz signal and the Fourier analysis of that signal.

High-frequency harmonics have much lower amplitudes, and the potential for EMI is significantly reduced.

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

8 _______________________________________________________________________________________

Figure 9. Driver Output Waveform and FFT, Transmitting 250kbps (125kHz) Signal

Figure 10. Receiver Propagation-Delay Test Circuit

Table 1. Transmitting Table 2. Receiving

INPUTS OUTPUTS

RE

DE DI Z Y

X

1

0

1

0

X

0

1

High-Z

1

0

High-Z

X = Don't Care High-Z = High Impedance

10dB/div

0Hz 500kHz/div 5MHz

100pF

Z

D

Y

R = 54Ω

100pF

, tF < 6ns

t

R

TTL IN

B

A

RECEIVER

R

OUT

RE DE

0

1

X = Don't Care High-Z = High Impedance

DE = 0 for MAX1483 and is a Don't Care for MAX1482.

*

INPUTS OUTPUT

*

0

A-B RO

> +0.2V

< -0.2V

Inputs open

X

1

0

1

High-Z

Low-Power Shutdown Mode

A low-power shutdown mode is initiated by bringing RE high and DE low. The devices will not shut down unless both the driver and receiver are disabled. In shutdown, the devices typically draw only 0.1µA of supply current.

RE and DE may be driven simultaneously; the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown.

For the receiver, the t

ZH

and tZLenable times assume the part was not in the low-power shutdown state. The t

ZH(SHDN)

and t

ZL(SHDN)

enable times assume the

parts were shut down (see Electrical Characteristics).

It takes the receivers longer to become enabled from the low-power shutdown state (t

ZH(SHDN)

, t

ZL(SHDN)

)

than from the operating mode (t

ZH

, tZL). (The parts are in operating mode if the RE , DE inputs equal a logical 0,1 or 1,1 or 0,0.)

Driver Output Protection

Excessive output current and power dissipation caused by faults or by bus contention are prevented by two mechanisms. A foldback current limit on the output stage provides immediate protection against short circuits over the whole common-mode voltage range (see Typical Operating Characteristics). In addition, a thermal shutdown circuit forces the driver outputs into a high-impedance state if the die temperature rises excessively.

Propagation Delay

Digital encoding schemes depend on the driver and receiver skew. Skew is defined as the difference between the rising and falling propagation delay times. Typical propagation delays are shown in Figures 11 and 12 using Figure 10’s test circuit.

The difference in receiver delay times, | t

PLH

- t

PHL

|, is

typically under 160ns.

The driver skew times are typically 160ns (800ns max).

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

_______________________________________________________________________________________ 9

RO

5V/div

B

A

500mV/div

500ns/div

Figure 11. Receiver t

PHL

Figure 12. Receiver t

PLH

B

500mV/div

A

5V/div

RO

500ns/div

MAX1482/MAX1483

Line Length vs. Data Rate

The RS-485/RS-422 standard covers line lengths up to 4000 feet. For line lengths greater than 4000 feet, see Figure 16.

Figure 13 shows the system differential voltage for the parts driving 4000 feet of 26AWG twisted-pair wire at 110kHz into 120Ω loads. Even after 4000 feet of cable, the MAX1482/MAX1483 output shows virtually no distortion.

Typical Applications

The MAX1482/MAX1483 transceivers are designed for bidirectional data communications on multipoint bus transmission lines. Figures 14 and 15 show typical network applications circuits. These parts can also be used as line repeaters, with cable lengths longer than 4000 feet, as shown in Figure 16.

To minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line should be kept as short as possible (although the slew-rate-limited MAX1482 and MAX1483 are more tolerant of imperfect termination than standard RS-485 ICs).

Isolated RS-485

For isolated RS-485 applications, see the MAX253 and MAX1480 data sheets.

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

10 ______________________________________________________________________________________

DI RO DE

RE

A

B

RE

RERE

RO

DI

DE

D

R

B

A

120Ω

D

R

MAX1483

Figure 14. MAX1483 Typical Half-Duplex RS-485 Network

R

O

DI

RECEIVER

INPUT

V

Y-VZ

2µs/div

5

0

1

0

-1

5

0

Figure 13. System Differential Voltage at 250kbps (125kHz) Driving 4000 Feet of Cable

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

______________________________________________________________________________________ 11

120Ω

R

D

RO

RE

DE

DI

A

B

Y

120Ω

DI

DI DIRO RO

RO

DE DE

DE

RE

Z

Y

AA

A

BB

B

D

R

NOTE: RE AND DE ON.

MAX1482

Figure 15. MAX1482 Full-Duplex RS-485 Network

Figure 16. Line Repeater for MAX1482

120Ω

DATA IN

DATA OUT

R

D

RO

RE

DE

DI

A

B

Z

Y

NOTE: RE AND DE ON.

MAX1482

Typical Operating Circuits

________________________(continued)

DE V

CC

144

MAX1482

9

5

DI

RO

N.C.

D

2

1, 8, 13

3 6, 7

RE GND

Y

10

Z

12

A

RD

Rt

11

B

VCCRE

Rt

R

GND DE

RO

DI

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

12 ______________________________________________________________________________________

__________________Chip Information____Pin Configurations (continued)

DIP/SO

TOP VIEW

1

2

3

4

5

6

7

14

13

12

11

10

9

8

V

CC

N.C.

A

B

Z

Y

N.C.

RO

RE

DE

DI

GND

R

D

MAX1482

TRANSISTOR COUNT: 294

L

α

C

A1B

DIM

A

A1

B C D E e H L

α

MIN

0.036

0.004

0.010

0.005

0.116

0.188

0.016 0°

MAX

0.044

0.008

0.014

0.007

0.120

0.198

0.026 6°

MIN

0.91

0.10

0.25

0.13

2.95

4.78

0.41 0°

MAX

1.11

0.20

0.36

0.18

3.05

5.03

0.66 6°

INCHES MILLIMETERS

8-PIN µMAX

MICROMAX SMALL OUTLINE

PACKAGE

0.650.0256

A

e

E H

D

0.101mm

0.004 in

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

.)

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited

RS-485 Transceivers

______________________________________________________________________________________ 13

SOICN .EPS

PACKAGE OUTLINE, .150" SOIC

1

21-0041

B

REV.DOCUMENT CONTROL NO.APPROVAL

PROPRIETARY INFORMATION

TITLE:

TOP VIEW

FRONT VIEW

MAX

0.010

0.069

0.019

0.157

0.010

INCHES

0.150

0.007

E

C

DIM

0.014

0.004

B

A1

MIN

0.053A

0.19

3.80 4.00

0.25

MILLIMETERS

0.10

0.35

1.35

MIN

0.49

0.25

MAX

1.75

0.050

0.016L

0.40 1.27

0.3940.386D

D

MINDIM

D

INCHES

MAX

9.80 10.00

MILLIMETERS

MIN

MAX

16

AC

0.337 0.344 AB8.758.55 14

0.189 0.197 AA5.004.80 8

N MS012

N

SIDE VIEW

H 0.2440.228 5.80 6.20

e 0.050 BSC 1.27 BSC

C

HE

e

B

A1

A

D

0∞-8∞

L

1

VARIATIONS:

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

.)

MAX1482/MAX1483

20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers

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.

14 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600

PDIPN.EPS

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

.)

MAXIM MAX1482, MAX1483 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual