SP3490 Просмотр технического описания (PDF) - Exar Corporation

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SP3490

+3.3V low power full duplex RS-485 transceivers with 10Mbps data rate

Exar Corporation 

SP3490 / SP3491

Electrical Characteristics (Continued)

TAMB = TMIN to TMAX and VCC = 3.3V ±5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX.

SP3490 Driver AC Characteristics (Continued)

Differential driver skew

2

Driver rise or fall time

5

20

SP3490 Receiver DC Characteristics

Differential input threshold

-0.2

0.2

Input hysteresis

25

Output voltage HIGH

Vcc-0.4

Output voltage LOW

0.4

Input resistance

12

15

Input current (A, B); VIN = 12V

1.0

Input current (A, B); VIN = -7V

-0.8

Short circuit current

60

SP3490 Receiver AC Characteristics

Maximum data rate

10

Receiver input to output, tPLH

Receiver input to output, tPLH

Receiver input to output, tPHL

Receiver input to output, tPHL

40

70

120

85

40

70

120

85

Differential receiver skew

4

Power Requirements

Supply Voltage

3.0

Supply Current

ESD Protection for D, R, A, B, Y and

Z pins

3.3

1000

±2

3.6

2000

UNITS

ns

ns

Volts

mV

Volts

Volts

kΩ

mA

mA

mA

Mbps

ns

ns

ns

ns

ns

V

µA

kV

CONDITIONS

|tPHL(Y)- tPLH(Y)|, |tPHL(Z)- tPLH(Z)|,

Figures 2 and 9

From 10%-90%; Figures 3 and 10

-7V ≤ VCM ≤ 12V

VCM = 0V

VID = 200mV, IO = -1.5mA

VID = -200mV, IO = 2.5mA

-7V ≤ VCM ≤ 12V

VIN = 12V

VIN = -7V

0V ≤ VO ≤ VCC

Figures 6 and 12

TAMB = 25°C, Vcc = 3.3V, Figures 6 and 12

Figures 6 and 12

TAMB = 25°C, Vcc = 3.3V, Figures 6 and 12

|tPHL(A)- tPLH(A)|, |tPHL(B)- tPLH(B)|,

Figures 6 and 12

D = 0V or VCC

Human Body Model

REV 1.0.3

3/12

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