ST1480A(2006) Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

ST1480A
(Rev.:2006)

3.3V Powered, 15KV ESD protected, Up to 12Mbps true RS-485/RS-422 transceiver

STMicroelectronics 

Electrical characteristics

ST1480A

Table 11.

Symbol

Receiver switching characteristics

VCC = 3V to 3.6V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred

to Ta = 25°C)

Parameter

Test Conditions

Min. Typ. Max. Unit

tPLH

tPHL

tRPDS

Propagation delay

|tPLH - tPHL| Propagation

delay skew

tPZL

tPZH

tPHZ

tPLZ

tZH(SHDN)

Output enable time

Output enable time

Output disable time

Output disable time

Receiver enable from

shutdown to output high

tZL(SHDN)

Receiver enable from

shutdown to output low

VID= 0V to 3V, CL1 =15pF

(Figure 12. and Figure 13.)

VID= 0V to 3V, CL1 = 15pF

(Figure 12. and Figure 13.)

CRL = 15pF, (Figure 14. and Figure 18.)

CRL = 15pF, (Figure 14. and Figure 18.)

CRL = 15pF, (Figure 14. and Figure 18.)

CRL = 15pF, (Figure 14. and Figure 18.)

CRL = 15pF, (Figure 14. and Figure 18.)

CRL = 15pF, (Figure 14. and Figure 18.)

30

50

ns

1

3

ns

10

20

ns

10

20

ns

10

20

ns

10

20

ns

10

20

ns

20

40

µs

Note: 1 ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when the DI input changes

state.

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

3 The transceivers are put into shutdown by bring RE high and DE low. If the input are in state

for less than 80ns, the part are guaranteed not to enter shutdown. If the inputs are in this

state for at least 300ns, the parts are guaranteed to have entered shutdown.

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