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Rainbow Electronics MAX3295 User Manual

Page 2

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MAX3293/MAX3294/MAX3295

20Mbps, +3.3V, SOT23 RS-485/
RS-422 Transmitters

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

CC

= +3.3V ±5%, T

A

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at V

CC

= +3.3V and T

A

= +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 referenced to GND, unless otherwise noted.)
Supply Voltage (V

CC

).............................................................+6V

DE, DI .......................................................................-0.3V to +6V
Y, Z .........................................................................-7V to +12.5V
Maximum Continuous Power Dissipation (T

A

= +70°C)

6-Pin SOT23 (derate 6.25mW/°C above +70°C).........500mW

Operating Temperature Ranges

MAX32_ _EEUT...............................................-40°C to +85°C
MAX32_ _EAUT ............................................-40°C to +125°C

Storage Temperature Range .............................-65°C to +160°C
Junction Temperature .....................................................+160°C
Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY

Supply Voltage

V

CC

3.135

3.300

3.465

V

Supply Current in Normal
Operation

I

Q

No load, DI = V

CC

or GND, DE = V

CC

5

mA

Supply Current in Shutdown Mode

I

SHDN

No load, DE = GND

1

10

µA

DRIVER

R

= 50

Ω (RS-422),

T

A

≤ +85°C

2.0

V

CC

Differential Driver Output

V

OD

Figure 1, DE = V

CC

,

DI = GND or V

CC

R = 27

Ω (RS-485),

T

A

≤ +85°C

1.5

V

CC

V

Change in Magnitude of
Differential Output Voltage

∆V

OD

Figure 1, R = 27

Ω or 50Ω,

DE = V

CC

(Note 3)

0.2

V

Driver Common-Mode Output
Voltage

V

OC

Figure 1, R = 27

Ω or 50Ω,

DE = V

CC

, DI = V

CC

or GND

-1

+3

V

Change in Magnitude of Common-
Mode Voltage

∆V

OC

Figure 1, R

= 27

Ω or 50Ω (Note 3)

0.2

V

DRIVER LOGIC

Input High Voltage

V

IH

DE, DI

2.0

V

Input Low Voltage

V

IL

DE, DI

0.8

V

Input Current

I

IN

DE, DI

-2

+2

µA

V

IN

= +12V

-20

+20

Output Leakage

I

O

Y, Z
DE = GND,
V

CC

= GND or

+3.3V

V

IN

= -7V

-20

+20

µA

(V

CC

- 1V)

≤ V

OUT

≤ +12V, output high

+25

Driver Short-Circuit Foldback
Output Current

I

OSFD

-7V

≤ V

OUT

≤ 1V, output high

-25

mA

0

≤ V

OUT

≤ +12V, output low

-250

Driver Short-Circuit
Output Current

I

OSD

-7V

≤ V

OUT

≤ V

CC

, output high

+250

mA

Thermal-Shutdown Threshold

T

TS

160

°C

Thermal-Shutdown Hysteresis

T

TSH

40

°C

ESD Protection

Y, Z

Human Body Model

±9

kV