STLVDS31 datasheet(5/13 Pages) STMICROELECTRONICS

5 / 13 page

STLVDS31

5/13

SWITCHING CHARACTERISTICS (Unless otherwise noted. Typical values are referred to TA =25°C

and VCC =3.3V)

Note 1: tsk(O) is the maximum delay time difference between drivers on the same device.

Note 2: RS-232 IN to TTL-CMOS OUT (from 50% to 50%)

Figure 1 : Voltage and Current Definitions

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

tPLH

Propagation Delay Time,

Low to High Output

RL =100Ω

CL = 10pF

Fig. 2

0.5

1.4

tPHL

Propagation Delay Time,

High to Low Output

1.7

2.5

Differential Output Signal

Rise Time

0.4

0.5

0.6

Differential Output Signal

Fall Time

0.4

0.5

0.6

tsk(P)

Pulse Skew (|tTHL =tTLH|)

0.3

0.6

tsk(O)

Channel to Channel Output

Skew (note1)

0.3

tPZH

Propagation Delay Time,

High Impedance to High

Level Output

Fig. 4

5.4

tPZL

Propagation Delay Time,

High Impedance to Low

Level Output

2.5

tPHZ

Propagation Delay Time,

High Level to High

Impedance Output

8.1

tPLZ

Propagation Delay Time,

Low Level to High

Impedance Output

7.3

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