MAX3294AUT+T - Maxim Integrated

General Description

The MAX3293/MAX3294/MAX3295 low-power, high-

speed transmitters for RS-485/RS-422 commu-

nication operate from a single +3.3V power supply.

These devices contain one differential transmitter.

The MAX3295 transmitter operates at data rates up

to 20Mbps, with an output skew of less than 5ns, and

a guaranteed driver propagation delay below 25ns.

The MAX3293 (250kbps) and MAX3294 (2.5Mbps) are

slew-rate limited to minimize EMI and reduce reflections

caused by improperly terminated cables.

The MAX3293/MAX3294/MAX3295 output level is guar-

anteed at +1.5V with a standard 54Ω load, compliant

with RS-485 specifications. The transmitter draws 5mA

of supply current when unloaded, and 1µA in low-power

shutdown mode (DE = GND).

Hot-swap circuitry eliminates false transitions on the data

cable during circuit initialization or connection to a live

backplane, and short-circuit current limiting and ther-

mal-shutdown circuitry protect the driver against exces-

sive power dissipation.

The MAX3293/MAX3294/MAX3295 are offered in a

6-pin SOT23 package, and are specified over the

automotive temperature range.

Applications

●RS-485/RS-422 Communications

●Clock Distribution

●Telecom Equipment

●Automotive

●Security Equipment

●Point-of-Sale Equipment

●Industrial Control

Features

●Space-Saving 6-Pin SOT23 Package

●250kbps/2.5Mbps/20Mbps Data Rates Available

●Operate from a Single +3.3V Supply

●ESD Protection

±9kV–Human Body Model

●Slew-Rate Limited for Errorless Data Transmission

(MAX3293/MAX3294)

●1µA Low-Current Shutdown Mode

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

●Current Limiting and Thermal Shutdown for

Driver-Overload Protection

●Hot-Swap Inputs for Telecom Applications

●Automotive Temperature Range (-40°C to +125°C)

Pin Configuration appears at end of data sheet.

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

/V denotes automotive-qualified package.

PART

MAXIMUM

DATA RATE

(Mbps)

SLEW-

RATE

LIMITED

TOP

MARK

MAX3293AUT+T 0.25 Yes ABNI or

ABVH

MAX3294AUT+T 2.5 Yes ABNJ or

ABVI

MAX3295AUT+T 20 No ABNK or

ABVJ

MAX3295AUT/V+T 20 No +ACSB

PART TEMP RANGE PIN-PACKAGE

MAX3293AUT+T -40°C to +125°C 6 SOT23-6

MAX3294AUT+T -40°C to +125°C 6 SOT23-6

MAX3295AUT+T -40°C to +125°C 6 SOT23-6

MAX3295AUT/V+T -40°C to +125°C 6 SOT23-6

MAX3293

MAX3294

MAX3295

MAX3280E

MAX3281E

MAX3283E

MAX3284E

RRO

120Ω

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

19-2770; Rev 4; 12/14

Selector Guide

Ordering Information

Typical Operating Circuit

(All voltages referenced to GND, unless otherwise noted.)

Supply Voltage (VCC) ............................................................+6V

DE, DI ......................................................................-0.3V to +6V

Y, Z ........................................................................-7V to +12.5V

Maximum Continuous Power Dissipation (TA = +70°C)

SOT23 (derate 8.2mW/°C above +70°C) .................654.1mW

Operating Temperature Ranges

MAX32_ _AUT .............................................. -40°C to +125°C

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

Junction Temperature ..................................................... +160°C

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

Soldering Temperature (reflow) .......................................+260°C

(VCC = +3.3V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

POWER SUPPLY

Supply Voltage VCC 3.135 3.300 3.465 V

Supply Current in Normal

Operation IQNo load, DI = VCC or GND, DE = VCC 5 mA

Supply Current in Shutdown Mode ISHDN No load, DE = GND 1 10 µA

DRIVER

Differential Driver Output VOD

Figure 1, DE = VCC,

DI = GND or VCC

R = 50Ω (RS-422),

TA ≤ +85°C 2.0 VCC

R = 27Ω (RS-485),

TA ≤ +85°C 1.5 VCC

Change in Magnitude of

Differential Output Voltage ∆VOD

Figure 1, R = 27Ω or 50Ω,

DE = VCC (Note 3) 0.2 V

Driver Common-Mode

Output Voltage VOC

Figure 1, R = 27Ω or 50Ω,

DE = VCC, DI = VCC or GND -1 +3 V

Change in Magnitude of

Common-Mode Voltage ∆VOC Figure 1, R = 27Ω or 50Ω (Note 3) 0.2 V

DRIVER LOGIC

Input High Voltage VIH DE, DI 2.0 V

Input Low Voltage VIL DE, DI 0.8 V

Input Current IIN DE, DI -2 +2 µA

Output Leakage IO

Y, Z

DE = GND,

VCC = GND or

+3.3V

VIN = +12V -20 +20

µA

VIN = -7V -20 +20

Driver Short-Circuit Foldback

Output Current IOSFD

(VCC - 1V) ≤ VOUT ≤ +12V, output high +25 mA

-7V ≤ VOUT ≤ 1V, output high -25

Driver Short-Circuit

Output Current IOSD

0 ≤ VOUT ≤ +12V, output low -250 mA

-7V ≤ VOUT ≤ VCC, output high +250

Thermal-Shutdown Threshold TTS 160 °C

Thermal-Shutdown Hysteresis TTSH 40 °C

ESD Protection Y, Z Human Body Model ±9 kV

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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Electrical Characteristics

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.

Absolute Maximum Ratings

(VCC = +3.3V ±5%, TA = +25°C, unless otherwise noted. Typical values are at VCC = +3.3V.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Driver Propagation Delay tPLH Figures 2, 3; RDIFF = 54Ω,

CL = 50pF

24 70 ns

tPHL 24 70

Driver Differential Output Rise or

Fall Time

tRFigures 2, 3; RDIFF = 54Ω,

CL = 50pF

10 70 ns

tF10 70

Driver-Output Skew tSKEW

Figures 2, 3; RDIFF = 54Ω, CL = 50pF,

tSKEW = | tPLH - tPHL | (Note 5) -40 +40 ns

Differential Driver-Output Skew tDSKEW Figures 2, 3; RDIFF = 54Ω, CL = 50pF -6 +6 ns

Maximum Data Rate Figures 2, 3; RDIFF = 54Ω, CL = 50pF 2.5 Mbps

Driver Enable to Output High tZH

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF 400 ns

Driver Enable to Output Low tZL

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF 400 ns

Driver Disable Time from Low tLZ

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF 100 ns

Driver Disable Time from High tHZ

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF 100 ns

Device-to-Device Propagation

Delay Matching

Same power supply, maximum temperature

difference between devices = +30°C (Note 5) 46 ns

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Driver Propagation Delay tPLH Figures 2, 3; RDIFF = 54Ω,

CL = 50pF

400 1300 ns

tPHL 400 1300

Driver Differential Output Rise

or Fall Time

tRFigures 2, 3; RDIFF = 54Ω,

CL = 50pF

400 1200 ns

tF400 1200

Driver-Output Skew tSKEW

Figures 2, 3; RDIFF = 54Ω, CL = 50pF,

tSKEW = | tPLH - tPHL | (Note 5) -400 +400 ns

Differential Driver-Output Skew tDSKEW Figures 2, 3; RDIFF = 54Ω, CL = 50pF -100 +100 ns

Maximum Data Rate Figures 2, 3; RDIFF = 54Ω, CL = 50pF 250 kbps

Driver Enable to Output High tZH

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF 2000 ns

Driver Enable to Output Low tZL

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF 2000 ns

Driver Disable Time from Low tLZ

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF 1000 ns

Driver Disable Time from High tHZ

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF 1000 ns

Device-to-Device Propagation

Delay Matching

Same power supply, maximum temperature

difference between devices = +30°C (Note 5) 900 ns

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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│

Switching Characteristics (MAX3294)

Switching Characteristics (MAX3293)

Note 1: Devices production tested at +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device

ground, unless otherwise noted.

Note 3: ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes state.

Note 4: The maximum current applies to peak current just prior to foldback current limiting.

Note 5: Guaranteed by design; not production tested.

(VCC = +3.3V ±5%, TA = +25°C, unless otherwise noted. Typical values are at VCC = +3.3V.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Driver Propagation Delay tPLH Figures 2, 3; RDIFF = 54Ω, CL = 50pF

25 ns

tPHL 25

Driver Differential Output Rise

or Fall Time

tRFigures 2, 3;

RDIFF = 54Ω,

CL = 50pF

TA = -40°C to +125°C 18.5

TA < +85°C 15

TA = -40°C to +125°C 18.5

TA < +85°C 15

Driver-Output Skew tSKEW

Figures 2, 3; RDIFF = 54Ω, CL = 50pF,

tSKEW = | tPLH - tPHL | 5 ns

Differential Driver-Output Skew tDSKEW Figures 2, 3; RDIFF = 54Ω, CL = 50pF 5 ns

Maximum Data Rate

Figures 2, 3; RDIFF = 54Ω, CL = 50pF,

TA ≤ +85°C 20 Mbps

Figures 2, 3; RDIFF = 54Ω, CL = 50pF 16

Driver Enable to Output High tZH

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF 400 ns

Driver Enable to Output Low tZL

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF 400 ns

Driver Disable Time from Low tLZ

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF 100 ns

Driver Disable Time from High tHZ

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF 100 ns

Device-to-Device Propagation

Delay Matching

Same power supply, maximum temperature

difference between devices = +30°C (Note 5) 25 ns

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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│

Switching Characteristics (MAX3295)

Figure 5. Driver Enable and Disable Times

Figure 4. Enable/Disable Timing Test Load

Figure 3. Driver Propagation Delays

Figure 2. Driver Timing Test Circuit

Figure 1. Driver DC Test Load

OUTPUT NORMALLY LOW

OUTPUT NORMALLY HIGH

Y, Z

VOL

Y, Z

1.5V 1.5V

VOL

+ 0.25V

VOH

- 0.25V

2.3V

tZL(SHDN), tZL tLZ

tZH(SHDN), tZH tHZ

OUTPUT

UNDER TEST

VCC

-VO

1.5V

1/2 VO

tPLH

tPHL

10%

90% 90%

1.5V

10%

VDIFF = V (Y) - V (Z)

tSKEW = | tPLH - tPHL |

VDIFF

f = 1MHz, tR 3ns, tF 3ns

VID

RDIFF

VOD

RVOC

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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Test Circuits and Timing Diagrams

(VCC = +3.3V, TA = +25°C, unless otherwise noted.)

MAX3293-95 toc09

TEMPERATURE (C)

PROPAGATION DELAY (ns)

-40 20 50 80-10 110

DRIVER PROPAGATION DELAY

vs. TEMPERATURE

tPHL

tPLH

RDIFF = 54Ω

CL = 50pF

OUTPUT SKEW vs. TEMPERATURE

MAX3293-95 toc08

TEMPERATURE (C)

OUTPUT SKEW (ns)

-40 20 50 80-10 110

DRIVER-OUTPUT CURRENT

vs. DRIVER-OUTPUT HIGH VOLTAGE

MAX3293-95 toc07

OUTPUT HIGH VOLTAGE (V)

OUTPUT CURRENT (mA)

-100

-40

-60

-80

-20

-120

-7 -5 -3 -1 1 3 5

DRIVER-OUTPUT CURRENT

vs. DRIVER-OUTPUT LOW VOLTAGE

MAX3293-95 toc06

OUTPUT LOW VOLTAGE (V)

OUTPUT CURRENT (mA)

100

0 2 4 6 8 10 12

140

120

1.0

2.0

2.5

3.0

3.5

MAX3293-95 toc05

TEMPERATURE (C)

DIFFERENTIAL OUTPUT VOLTAGE (V)

-40 20 50 80-10 110

DRIVER DIFFERENTIAL OUTPUT VOLTAGE

vs. TEMPERATURE

RDIFF = 54Ω

RDIFF = 100Ω

1.5

OUTPUT CURRENT

vs. DIFFERENTIAL OUTPUT VOLTAGE

MAX3293-95 toc04

DIFFERENTIAL OUTPUT VOLTAGE (V)

OUTPUT CURRENT (mA)

1.75 2.752.25 2.502.00 3.00 3.25 3.50

1.6

1.2

0.8

0.4

2.0

MAX3293-95 toc03

TEMPERATURE (C)

SUPPLY CURRENT (µA)

-40 20 50 80-10 110

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

DE = GND

0.5

1.0

1.5

2.0

SUPPLY CURRENT vs. TEMPERATURE

MAX3293-95 toc02

TEMPERATURE (C)

SUPPLY CURRENT (mA)

-40 20 50 80-10 110

DE = VCC

NO LOAD

NO SWITCHING

MAX3295

SUPPLY CURRENT vs. DATA RATE

MAX3293-95 toc01

DATA RATE (Mbps)

SUPPLY CURRENT (mA)

0 105 15 20

DE = VCC

NO LOAD

TA = +85C

TA = +125C

TA = +25C

TA = -40C

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

Maxim Integrated

│

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Typical Operating Characteristics

(VCC = +3.3V, TA = +25°C, unless otherwise noted.)

PIN NAME FUNCTION

1 DI Driver Input. A logic low on DI forces the noninverting output (Y) low and the inverting output (Z) high.

A logic high on DI forces the noninverting output (Y) high and the inverting output (Z) low.

2 VCC Positive Supply. VCC = +3.3V ±5%. Bypass VCC to GND with a 0.1µF capacitor.

3 DE Driver Output Enable. Force DE high to enable driver. Pull DE low to disable the driver. Hot-swap

input, see the Hot-Swap Capability section.

4 Z Inverting RS-485/RS-422 Output

5 GND Ground

6 Y Noninverting RS-485/RS-422 Output

EYE DIAGRAM (fIN = 20Mbps)

MAX3293-95 toc14

10ns/div

Y, Z: 500mV/div

Y, Z

LOADED DRIVER-OUTPUT WAVEFORM

(fIN = 16Mbps)

MAX3293-95 toc13

20ns/div

Y, Z: 500mV/div

Y, Z

UNLOADED DRIVER-OUTPUT

WAVEFORM (fIN = 16Mbps)

MAX3293-95 toc12

20ns/div

Y, Z: 1V/div

Y, Z

ENABLE RESPONSE TIME

MAX3293-95 toc11

40ns/div

Y-Z

Y, Z, DE: 2V/div

DRIVER PROPAGATION DELAY

MAX3293-95 toc10

20ns/div

Y, Z: 1V/div

DI: 2V/div

Y, Z

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

Maxim Integrated

│

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Pin Description

Typical Operating Characteristics (continued)

Detailed Description

The MAX3293/MAX3294/MAX3295 are low-power trans-

mitters for RS-485/RS-422 communication. The MAX3295

operates at data rates up to 20Mbps, the MAX3294 up

to 2.5Mbps (slew-rate limited), and the MAX3293 up to

250kbps (slew-rate limited). These devices are enabled

using an active-high driver enable (DE) input. When

disabled, outputs enter a high-impedance state, and the

supply current reduces to 1µA.

The MAX3293/MAX3294/MAX3295 have a hot-swap input

structure that prevents disturbance on the differential signal

lines when a circuit board is plugged into a “hot” back-

plane (see the Hot-Swap Capability section). Drivers are

also short-circuit current limited and are protected against

excessive power dissipation by thermal-shutdown circuitry.

Driver

The driver accepts a single-ended, logic-level input

(DI) and translates it to a differential RS-485/RS-422

level output (Y and Z). Driving DE high enables the

driver, while pulling DE low places the driver outputs

(Y and Z) into a high-impedance state (see Table 1).

Low-Power Shutdown

Force DE low to disable the MAX3293/MAX3294/

MAX3295. In shutdown mode, the device consumes a

maximum of 10µA of supply current.

Hot-Swap Capability

Hot-Swap Input

When circuit boards are inserted into a “hot” or pow-

ered backplane, disturbances to the enable can lead

to data errors. Upon initial circuit board insertion, the

processor undergoes its power-up sequence. During

this period, the output drivers are high impedance

and are unable to drive the DE input of the MAX3293/

MAX3294/MAX3295 to a defined logic level. Leakage

currents up to 10µA from the high-impedance out-

put could cause DE to drift to an incorrect logic state.

Additionally, parasitic circuit board capacitance could

cause coupling of VCC or GND to DE. These factors could

improperly enable the driver.

The MAX3293/MAX3294/MAX3295 eliminate all above

issues with hot-swap circuitry. When VCC rises, an inter-

nal pulldown circuit holds DE low for approximately 10µs.

After the initial power-up sequence, the pulldown circuit

becomes transparent, resetting the hot-swap tolerable

input.

Figure 7. Differential Power-Up Glitch (0.1V/µs)

Figure 6. Simplified Structure of the Driver Enable Input (DE)

X = Don’t care.

Table 1. MAX3293/MAX3294/

MAX3295 (RS-485/RS-422) Transmitting

Function Table

INPUTS OUTPUTS

DE DI Y Z

0 X Shutdown Shutdown

1 0 0 1

1 1 1 0

DIFFERENTIAL POWER-UP GLITCH

(0.1V/µs)

4µs/div

2V/div

VCC

Y-Z

10mV/div

AC-COUPLED

10mV/div

AC-COUPLED

20mV/div

VCC

TIMER

(HOT SWAP)

10µs

100µA

M1 M2

5.6kΩ

2mA

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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Hot-Swap Input Circuitry

The MAX3293/MAX3294/MAX3295 enable input fea-

tures hot-swap capability. At the input, there are two

NMOS devices, M1 and M2 (Figure 6). When VCC

ramps from zero, an internal 10µs timer turns on

M2 and sets the SR latch, which also turns on M1.

Transistors M2, a 2mA current sink, and M1, a 100µA

current sink, pull DE to GND through a 5.6kΩ resistor.

M2 is designed to pull DE to the disabled state against

an external parasitic capacitance up to 100pF that may

drive DE high. After 10µs, the timer deactivates M2

while M1 remains on, holding DE low against three-

state leakages that can drive DE high. M1 remains on

until an external source overcomes the required input

current. At this time, the SR latch resets and M1 turns

off. When M1 turns off, DE reverts to a standard,

high-impedance CMOS input. Whenever VCC drops

below 1V, the hot-swap input is reset.

Hot-Swap Line Transient

During a hot-swap event when the driver is connected to

the line and is powered up, the driver must not cause the

differential signal to drop below 200mV. Figures 7, 8, and

9 show the results of the MAX3295 during power-up for

three different VCC ramp rates (0.1V/µs, 1V/µs, and 10V/

µs). The photos show the VCC ramp, the single-ended

signal on each side of the 100Ω termination, as well as

the differential signal across the termination.

ESD Protection

Human Body Model

Figure 10 shows the Human Body Model, and Figure 11

shows the current waveform it generates when discharged

into low impedance. This model consists of a 100pF capac-

itor charged to the ESD voltage of interest, which is then

discharged into the device through a 1.5kΩ resistor.

Figure 11. Current Waveform

Figure 10. Human Body ESD Test

Figure 9. Differential Power-Up Glitch (10V/µs)

Figure 8. Differential Power-Up Glitch (1V/µs)

IP 100%

90%

36.8%

tRL

TIME

tDL

CURRENT WAVEFORM

PEAK-TO-PEAK RINGING

(NOT DRAWN TO SCALE)

10%

AMPERES

CHARGE-CURRENT-

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE

CAPACITOR

100pF

1MΩ

1.5kΩ

HIGH-

VOLTAGE

SOURCE

DEVICE

UNDER

TEST

DIFFERENTIAL POWER-UP GLITCH

(10V/µs)

200ns/div

2V/div

VCC

Y-Z

50mV/div

AC-COUPLED

50mV/div

AC-COUPLED

100mV/div

DIFFERENTIAL POWER-UP GLITCH

(1V/µs)

1µs/div

2V/div

VCC

Y-Z

100mV/div

AC-COUPLED

100mV/div

AC-COUPLED

200mV/div

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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Reduced EMI and Reections

(MAX3293/MAX3294)

The MAX3293/MAX3294 are slew-rate limited, minimizing

EMI and reducing reflections caused by improperly ter-

minated cables. Figure 12 shows Fourier analysis of the

MAX3295 transmitting a 125kHz signal. High-frequency

harmonics with large amplitudes are evident. Figure 13

shows the same information, but for the slew-rate-limited

MAX3293, transmitting the same signal. The high-fre-

quency harmonics have much lower amplitudes, and the

potential for EMI is significantly reduced.

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. The

slew-rate-limited MAX3293 and MAX3294 are more toler-

ant of imperfect termination.

Driver-Output Protection

Two mechanisms prevent excessive output current and

power dissipation caused by faults or by bus contention.

The first, a foldback current limit on the output stage,

provides immediate protection against short circuits over

the whole common-mode voltage range (see the Typical

Operating Characteristics). The second, a thermal-shut-

down circuit, forces the driver outputs into a high-imped-

ance state if the die temperature exceeds +160°C.

Figure 13. Driver-Output Waveform and FFT Plot of MAX3293

Transmitting a 125kHz Signal

Figure 12. Driver-Output Waveform and FFT Plot of MAX3295

Transmitting a 125kHz Signal

PACKAGE

TYPE

PACKAGE

CODE

OUTLINE

NO.

LAND

PATTERN NO.

6 SOT23 U6CN+2 21-0058 90-0175

VCC

ZDE

1 6 Y

5 GND

MAX3293

MAX3294

MAX3295

SOT23-6

TOP VIEW

3 4

DRIVER-OUTPUT WAVEFORM AND

FFT PLOT OF MAX3293

10dB/div

DRIVER-OUTPUT WAVEFORM AND

FFT PLOT OF MAX3295

10dB/div

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

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Package Information

For the latest package outline information and land patterns

(footprints), go to www.maximintegrated.com/packages. Note

that a “+”, “#”, or “-” in the package code indicates RoHS status

only. Package drawings may show a different suffix character, but

the drawing pertains to the package regardless of RoHS status.

Chip Information

PROCESS: BiCMOS

Pin Conguration

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

3 3/11 Added lead-free parts to the Ordering Information and Selector Guide tables 1

4 12/14 Added MAX3295AUT/V+T to Ordering Information 1

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses

are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)

shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.

MAX3293–MAX3295 20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

│

Revision History

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