ST4485EB datasheet(7/18 Pages) STMICROELECTRONICS

tên linh kiện	ST4485EB

Giải thích chi tiết về linh kiện	Guaranteed 20 Mbps data rate

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ST4485EB

Electrical characteristics

18

Table 10. Receiver electrical characteristics (VCC = 3 V to 3.6 V, TA = -40 to 105 °C, unless

otherwise specified. Typical values are referred to TA = 25 °C)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VTH

Receiver differential

threshold voltage

VCM = -7 V to 12 V, DE = 0

-0.2

0.2

V

VTH

Receiver input hysteresis

VCM = 0 V

70

V

VOH

Receiver output high

voltage

IOUT = -4 mA, VID = 200 mV

(Figure 8 and Figure 9)

2V

VOL

Receiver output low

voltage

IOUT = 4 mA, VID = -200 mV, (Figure 3)0.4

V

IOZR

3-state (high impedance)

output current at receiver

VCC = 3.6 V, VO = 0 V to VCC

1µA

RRIN

Receiver input resistance

VCM = -7 V to 12 V

24

k



IOSR

Receiver short-circuit

current

VRO = 0 V to VCC

760

mA

Table 11. Driver switching characteristics (VCC = 3 V to 3.6 V, TA = -40 to 105 °C, unless otherwise

specified. Typical values are referred to TA = 25 °C)(1)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

DR

Maximum data rate

20

Mbps

tDD

Differential output delay

RL= 60 , CL = 15 pF, (Figure 4 and

Figure 5)

18

30

ns

tTD

Differential output

transition time

RL= 60 , CL = 15 pF, (Figure 4 and

Figure 5)

12

20

ns

tPLH

tPHL

Propagation delay

RL= 27 , CL = 15 pF, (Figure 8 and

Figure 9)

18

30

ns

tPDS

|tPLH - tPHL| Propagation

delay skew(2)

RL= 27 , CL = 15 pF, (Figure 8 and

Figure 9)

25

ns

tPZL

Output enable time

RL= 110 , (Figure 10 and Figure 11)19

35

ns

tPZH

Output enable time

RL= 110 , (Figure 6 and Figure 7)30

50

ns

tPHZ

Output disable time

RL= 110 , (Figure 6 and Figure 7)19

35

ns

tPLZ

Output disable time

RL= 110  (Figure 10 and Figure 11)30

50

ns

tSKEW

Differential output delay

skew

13

ns

tZH(SHDN)

Driver enable from

shutdown to output high

30

50

ns

tZL(SHDN)

Driver enable from

shutdown to output low

19

35

ns

1. The transceivers are put into shutdown by bring RE high and DE low. If the input are in state for less than 80 ns, the part

are guaranteed not to enter shutdown. If the inputs are in this state for at least 300 ns, the parts are guaranteed to have

entered shutdown.

2. Measured on |tPLH(A) - tPHL(A)| and |tPLH(B) - tPHL(B)|.

Số phần tương tự - ST4485EB

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