MAX13448E datasheet(3/14 Pages) MAXIM

Part #	MAX13448E

Description	80V Fault-Protected Full-Duplex RS-485 Transceiver

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Manufacturer	MAXIM [Maxim Integrated Products]

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±80V Fault-Protected Full-Duplex

RS-485 Transceiver

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3

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3.0 to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Notes 2, 3)

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

RECEIVER

VA, VB = +12V

VCC = GND or

VCC = +3.0V to +5.5V

+125

µA

VA, VB = -7V

-100

µA

Input Current

IA, B

VA, VB = ±80V

-6

+6

mA

Receiver Differential Threshold

Voltage

VTH

-7V

≤ VCM ≤ +12V

-200

-50

mV

Receiver Input Hysteresis

ΔVTH

25

mV

Output High Voltage

VOH

IOH = -1.6mA

VCC -

0.6

V

Output Low Voltage

VOL

IOL = 1mA

0.4

V

Three-State Output Current at

Receiver

IOZR

0

≤ VA, VB ≤ VCC

-1

+1

µA

Receiver Output Short-Circuit

Current

IOSR

0

≤ VRO ≤ VCC

-95

+95

mA

ESD PROTECTION

All Pins

Human Body Model

±2

kV

ESD Protection Level

(A and B, Y and Z)

Human Body Model

±8

kV

CONTROL

Control Input High Voltage

VCIH

DE,

RE

2V

Control Input Low Voltage

VCIL

DE,

RE

0.8

V

Input Current Latch During First

Rising Edge

IIN

DE,

RE

80

µA

PROTECTION SPECIFICATIONS

Overvoltage Protection

A, B, Y, Z

-80

+80

V

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

DRIVER

Driver Differential Propagation

Delay

tDPLH,

tDPHL

RL = 54

Ω, CL = 50pF, Figures 2 and 3

700

1500

ns

Driver Differential Output

Transition Time

tLH, tHL

RL = 54

Ω, CL = 50pF, Figures 2 and 3

250

1200

ns

Differential Driver Output Skew

tDSKEW

RL = 54

Ω, CL = 50pF, tDSKEW = [tDPLH -

tDPHL], Figures 2 and 3

150

200

ns

Maximum Data Rate

fMAX

250

kbps

Driver Enable Time to Output HightDZH

RL = 500

Ω, CL = 50pF, Figure 4

2000

ns

SWITCHING CHARACTERISTICS (VCC = +3.3V ±10%)

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

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