ST491ACN datasheet(7/17 Pages) STMICROELECTRONICS

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ST491A

Electrical characteristics

7/17

Table 7.

Receiver electrical characteristics

(VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are

referred to TA=25°C)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

IIN

Input current (A, B)

Other input = 0V

VCC = 0 or 5.25V

VIN=12V

0.5

VIN=-7V

-0.35

-0.8

VTH

Receiver differential threshold

voltage

VCM = -7V to 12V

-0.2

0.2

ΔVTH

Receiver input hysteresis

VCM = 0V

VOH

Receiver output high voltage

IOUT = -8mA, VID = 200mV

3.5

4.7

VOL

Receiver output low voltage

IOUT = 8mA, VID = -200mV

0.3

0.5

RRIN

Receiver input resistance

VCM = -7V to 12V

Table 8.

Driver switching characteristics

(VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are

referred to TA=25°C)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Maximum data rate

Jitter <5%

Mbps

tPLH

tPHL

Propagation delay input

to output

RL= 54Ω, CL1=CL2=50pF, (Figure 1.)10

tSKEW

Differential output delay

skew

RL= 54Ω, CL1=CL2=50pF, (Figure 1.)1

tTLH

tTHL

Rise or fall differential

time

RL= 54Ω, CL1=CL2=50pF, (Figure 1.)8

tPZL

Output enable time

CL= 50pF, S1 Closed

tPZH

Output enable time

CL= 50pF, S2 Closed

tPHZ

Output disable time

CL= 15pF, S2 Closed

tPLZ

Output disable time

CL= 15pF, S1 Closed

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