MAXIM MAX3060E, MAX3061E, MAX3062E Technical data

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MAX3060E/MAX3061E/MAX3062E

±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-Rate-

Limited RS-485/RS-422 Transceivers in a SOT

________________________________________________________________ Maxim Integrated Products 1

General Description

The MAX3060E/MAX3061E/MAX3062E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature failsafe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output is a logic high if all transmitters on a terminated bus are disabled (high impedance). These devices also feature hot-swap circuitry that eliminates data glitches during hot insertion.

The MAX3060E features slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3061E, also slewrate limited, transmits up to 500kbps. The MAX3062E driver is not slew-rate limited, allowing transmit speeds up to 20Mbps. All transmitter outputs are protected to ±15kV using the Human Body Model.

These transceivers typically draw 910µA of supply current when unloaded, or 790µA when fully loaded with the drivers disabled.

All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. These devices are intended for half-duplex communication.

Applications

RS-422/RS-485 Communications

Level Translators

Transceivers for EMI-Sensitive Applications

Industrial-Control Local-Area Networks

Features

♦ True Fail-Safe Receiver While Maintaining

EIA/TIA-485 Compatibility

♦ Enhanced Slew-Rate Limiting Facilitates

Error- Free Data Transmission (MAX3060E and MAX3061E)

♦ 1nA Low-Current Shutdown Mode ♦ Hot-Swappable for Telecom Applications ♦ ESD Protection: ±15kV Human Body Model ♦ Allow Up to 256 Transceivers on the Bus ♦ Space-Saving 8-Pin SOT23 Package

19-2536; Rev 1; 7/07

Ordering Information

PART

PIN-

TOP

MARK

MAX3060EEKA-T

AAKI

MAX3060EEKA#T

AEPA*

MAX3061EEKA-T

AAKJ

MAX3061EEKA#T

AEPB*

MAX3062EEKA-T

AAKK

MAX3062EEKA#T

AEPC*

Selector Guide

PART

DATA RATE

(Mbps)

SLEW-

RATE

TRANSCEIVERS

ON BUS

MAX3060E

0.115 Yes 256

MAX3061E

0.5 Yes 256

MAX3062E

20 No 256

Typical Operating Circuit/Pin Configuration

*Indicates an RoHS-compliant part T = Tape and Reel

TEMP RANGE

-40°C to +85°C 8 SOT23-8

PACKAGE

LIMITED

TOP VIEW

+5V

0.1μF

MAX3060E MAX3061E

GND

MAX3062E

MAX3060E/MAX3061E/MAX3062E

±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-RateLimited RS-485/RS-422 Transceivers in a SOT

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= +5V ±5%, TA= T

MIN

to T

MAX

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

All Voltages with Respect to GND Supply Voltage (V

) ............................................................+7V

Input Voltage (

RE, DE, DI)..........................-0.3V to (VCC+ 0.3V)

Driver Output/Receiver Input Voltage (A, B) .......-7.5V to +12.5V

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

+ 0.3V)

Continuous Power Dissipation (T

= +70°C)

8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW

Operating Temperature Range

MAX306_EE_ _ ................................................-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 (No Load)

OD1

VCC = 5V 5 V

Figure 1, R = 50Ω (RS-422) 2.0

Differential Driver Output V

OD2

Figure 1, R = 27Ω (RS-485) 1.5

Change in Magnitude of Differential Output Voltage

ΔV

Figure 1, R = 50Ω or R = 27Ω (Note 3) 0.2 V

Driver Common-Mode Output Voltage

Figure 1, R = 50Ω or R = 27Ω 3V

Change in Magnitude of Common-Mode Voltage

ΔV

Figure 1, R = 50Ω or R = 27Ω (Note 3) 0.2 V

Input High Voltage V

DE, DI, RE 2.0 V

Input Low Voltage V

DE, DI, RE 0.8 V

DI Input Hysteresis V

HYS

Input Current I

IN1

DE, DI, RE ±1 µA

Hot-Swap Driver Input Current

DE, RE (Note 4)

µA

VIN = +12V

Input Current (A and B) I

IN2

DE = GND, V

= GND or 5.25V

= -7V

µA

Driver Short-Circuit Output Current

OD1

-7V ≤ V

OUT

≤ +12V, TA = +25°C (Note 5)

IEC 1000-4-2 Air-Gap Discharge ±7

IEC 1000-4-2 Contact Discharge ±7ESD Protection for A, B

Human Body Model

HOTSWAP

100

±200

125

-100

±15 ±250

±15

MAX3060E/MAX3061E/MAX3062E

±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-Rate-

Limited RS-485/RS-422 Transceivers in a SOT

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +5V ±5%, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Notes 1, 2)

PARAMETER

CONDITIONS

UNITS

RECEIVER

Receiver Differential Threshold Voltage

-7V ≤ VCM ≤ +12V

-50 mV

Receiver Input Hysteresis ΔV

25 mV

Receiver Output High Voltage V

IO = -4mA, VID = -50mV

Receiver Output Low Voltage V

IO = 4mA, VID = -200mV 0.4 V

Three-State Output Current at Receiver

OZR

0V ≤ VO ≤ V

±1 µA

Receiver Input Resistance R

-7V ≤ VCM ≤ +12V 96 kΩ

Receiver Output Short-Circuit Current

OSR

0V ≤ V

≤ V

±8

SUPPLY CURRENT

Supply Current I

No load, DI = GND or V

µA

Supply Current in Shutdown Mode

SHDN

DE = GND, RE = V

1µA

SYMBOL

MIN TYP MAX

-200 -125

VCC - 1.5

0.01

±80

DE = RE = GND 790 1400 DE = RE = V

910 1500

0.001

MAX3060E/MAX3061E/MAX3062E

±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-RateLimited RS-485/RS-422 Transceivers in a SOT

4 _______________________________________________________________________________________

SWITCHING CHARACTERISTICS—MAX3060E

(VCC= +5V ±5%, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Notes 1, 2)

PARAMETER

CONDITIONS

UNITS

Driver Input to Output

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

1.0 1.7 2.4 µs

Driver Output Skew (t

DPLH

- t

DPHL

)

DSKEW

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

-7

Driver Rise or Fall Time

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

1.3

2.5 µs

Maximum Data Rate f

MAX

kbps

Driver Enable to Output High t

DZH

Figures 4 and 6, CL = 100pF, S2 closed 0.6 1.5 µs

Driver Enable to Output Low t

DZL

Figures 4 and 6, CL = 100pF, S1 closed 0.5 1.5 µs

Driver Disable Time from Low t

DLZ

Figures 4 and 6, CL = 15pF, S1 closed 60

Driver Disable Time from High t

DHZ

Figures 4 and 6, CL = 15pF, S2 closed 85

Receiver Input to Output

RPLH

RPHL

Figures 7 and 9; | VID | ≥ 2.0V; rise and fall time of V

≤ 4ns, CL = 15pF

47 80 ns

Differential Receiver Skew (t

RPLH

- t

RPHL

)

RSKD

Figures 7 and 9; | VID | ≥ 2.0V; rise and fall time of V

≤ 4ns, CL = 15pF

-10 -3

Receiver Enable to Output Low t

RZL

Figures 2 and 8, CL = 15pF, S1 closed 50 ns

Receiver Enable to Output High t

RZH

Figures 2 and 8, CL = 15pF, S2 closed 50 ns

Receiver Disable Time from Low

RLZ

Figures 2 and 8, CL = 15pF, S1 closed 50 ns

Receiver Disable Time from High

RHZ

Figures 2 and 8, CL = 15pF, S2 closed 50 ns

Time to Shutdown t

SHDN

(Note 6) 50

Driver Enable from Shutdown to Output High

)

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

Driver Enable from Shutdown to Output Low

)

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

Receiver Enable from Shutdown to Output High

)

Figures 2 and 8, CL = 15pF, S2 closed 1.5 µs

Receiver Enable from Shutdown to Output Low

)

Figures 2 and 8, CL = 15pF, S1 closed 1.5 µs

SYMBOL

, t

DPLH

DPHL

MIN TYP MAX

tDR, t

DZH(SHDN

DZL(SHDN

RZH(SHDN

RZL(SHDN

-200

1.85

115

180 600

+200

200

+10

MAX3060E/MAX3061E/MAX3062E

±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-Rate-

Limited RS-485/RS-422 Transceivers in a SOT

_______________________________________________________________________________________ 5

SWITCHING CHARACTERISTICS—MAX3061E

(VCC= +5V ±5%, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Notes 1, 2)

PARAMETER

CONDITIONS

UNITS

Driver Input to Output

DPLH

DPHL

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

800 ns

Driver Output Skew (t

DPLH

- t

DPHL

)

DSKEW

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

-4

Driver Rise or Fall Time

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

750 ns

Maximum Data Rate f

MAX

kbps

Driver Enable to Output High t

DZH

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

Driver Enable to Output Low t

DZL

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

Driver Disable Time from Low t

DLZ

Figures 4 and 6, CL = 15pF, S1 closed 60 200 ns

Driver Disable Time from High t

DHZ

Figures 4 and 6, CL = 15pF, S2 closed 80 200 ns

Receiver Input to Output

RPLH

RPHL

Figures 7 and 9; | VID | ≥ 2.0V; rise and fall time of V

≤ 4ns, CL = 15pF

47 80 ns

Differential Receiver Skew (t

RPLH

- t

RPHL

)

RSKD

Figures 7 and 9; | VID | ≥ 2.0V; rise and fall time of V

≤ 4ns, CL = 15pF

-10 -3

Receiver Enable to Output Low t

RZL

Figures 2 and 8, CL = 15pF, S1 closed 50 ns

Receiver Enable to Output High t

RZH

Figures 2 and 8, CL = 15pF, S2 closed 50 ns

Receiver Disable Time from Low

RLZ

Figures 2 and 8, CL = 15pF, S1 closed 50 ns

Receiver Disable Time from High

RHZ

Figures 2 and 8, CL = 15pF, S2 closed 50 ns

Time to Shutdown t

SHDN

(Note 6) 50

600 ns

Driver Enable from Shutdown to Output High

Figures 4 and 6, CL = 100pF, S2 closed 1.5 µs

Driver Enable from Shutdown to Output Low

)

Figures 4 and 6, CL = 100pF, S1 closed 1.5 µs

Receiver Enable from Shutdown to Output High

)

Figures 2 and 8, CL = 15pF, S2 closed 1.5 µs

Receiver Enable from Shutdown to Output Low

)

Figures 2 and 8, CL = 15pF, S1 closed 1.5 µs

SYMBOL

MIN TYP MAX

250 470

-100

tDR, t

200 530

500

330 1000

200 1000

DZH(SHDN

DZL(SHDN

RZH(SHDN

RZL(SHDN

180

+100

+10

MAX3060E/MAX3061E/MAX3062E

±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-RateLimited RS-485/RS-422 Transceivers in a SOT

6 _______________________________________________________________________________________

SWITCHING CHARACTERISTICS—MAX3062E

(VCC= +5V ±5%, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at VCC= +5V and TA= +25°C.) (Notes 1, 2)

Note 1: Overtemperature limits are guaranteed by design and are not production tested. Devices are tested at T

= +25°C.

Note 2: 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.

Note 3: ΔV

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

Note 4: This input current level is for the hot-swap enable (DE, RE) inputs and is present until the first transition only. After the first

transition, the input reverts to a standard high-impedance CMOS input with input current I

IN1

. For the first 10µs, the input

current can be as high as 1mA. During this period the input is disabled.

Note 5: Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during

current limiting.

Note 6: The device is put into shutdown by bringing RE high and DE low. If the enable inputs are in this state for less than 50ns, the

device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 600ns, the device is guaranteed to have entered shutdown.

PARAMETER

CONDITIONS

UNITS

Driver Input to Output

DPLH

DPHL

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

20 30 ns

Driver Output Skew (t

DPLH

- t

DPHL

)

DSKEW

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

-10 +1

Driver Rise or Fall Time

Figures 3 and 5, R

DIFF

= 54Ω,

DIFF

= 50pF

815ns

Maximum Data Rate f

MAX

Mbps

Driver Enable to Output High t

DZH

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

500 ns

Driver Enable to Output Low t

DZL

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

500 ns

Driver Disable Time from Low t

DLZ

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

200 ns

Driver Disable Time from High t

DHZ

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

200 ns

Receiver Input to Output

RPLH

RPHL

Figures 7 and 9; | VID | ≥ 2.0V; rise and fall time of V

≤ 4ns, CL = 15pF

45 80 ns

Differential Receiver Skew (t

RPLH

- t

RPHL

)

RSKD

Figures 7 and 9; | VID | ≥ 2.0V; rise and fall time of V

≤ 4ns, CL = 15pF

-10 -4

Receiver Enable to Output Low t

RZL

Figures 2 and 8, CL = 15pF, S1 closed 50 ns

Receiver Enable to Output High t

RZH

Figures 2 and 8, CL = 15pF, S2 closed 50 ns

Receiver Disable Time from Low

RLZ

Figures 2 and 8, CL = 15pF, S1 closed 50 ns

Recei ver D i sab l e Ti m e fr om H i g ht

RHZ

Figures 2 and 8, CL = 15pF, S2 closed 50 ns

Time to Shutdown t

SHDN

(Note 6) 50

600 ns

Driver Enable from Shutdown to Output High

)

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

Driver Enable from Shutdown to Output Low

)

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

Receiver Enable from Shutdown to Output High

)

Figures 2 and 8, CL = 15pF, S2 closed 1.5 µs

Receiver Enable from Shutdown to Output Low

)

Figures 2 and 8, CL = 15pF, S1 closed 1.5 µs

SYMBOL

tDR, t

MIN TYP MAX

+10

250

100

+10

DZH(SHDN

DZL(SHDN

RZH(SHDN

RZL(SHDN

180

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