ST485E(2007) データシートの表示（PDF） - STMicroelectronics

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ST485E
(Rev.:2007)

±15KV ESD protected, low power RS-485/RS-422 transceiver

STMicroelectronics 

Electrical characteristics

ST485E

Table 8.

Symbol

Receiver switching characteristics (VCC = 5V ± 5%, TA = TMIN to TMAX, unless otherwise

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

Parameter

Test conditions (1)

Min. Typ. Max. Unit

tPLH

tPHL

tSKD

tPZH

Propagation delay input to

output

Differential receiver skew

Output enable time

RDIFF = 54Ω, CL1 = CL2 = 100pF (See

Figure 4. and Figure 8.)

RDIFF = 54Ω, CL1 = CL2 = 100pF (See

Figure 4. and Figure 8.)

CRL = 15pF, S1 = Closed

(See Fig. 2 and Figure 9.)

110 130 ns

5

10

ns

11

35

ns

tPZL Output enable time

CRL = 15pF, S2 = Closed

(See Fig. 2 and Figure 9.)

13

35

ns

tPLZ Output disable time

CRL = 15pF, S1 = Closed

(See Fig. 2 and Figure 9.)

13

35

ns

tPHZ Output disable time

CRL = 15pF, S2 = Closed

(See Fig. 2 and Figure 9.)

11

35

ns

fMAX Maximum data rate

5

Mbps

1. All currents into device pins are positive; all out of device pins are negative; all voltages are referenced to device ground

unless specified

8/19

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