Rainbow-electronics MAX13486E Manuale Utente Scaricare il pdf (Pagina 11)

MAX13485E/MAX13486E

Half-Duplex RS-485/RS-422 Transceivers in µDFN

__________________________________________________________________________

+1V

-1V

GENERATOR

V

ID

S3

S2

S1

1kΩ

CL

15pF

50Ω

V

CC

RO

RE

RE

RO

RE

RO

RO

RE

V

CC

/2

V

CC

V

CC

V

CC

V

OL

0

0

0

0

0

0

V

OH

V

OH

0.25V

0.25V

V

OH

/2

S1 OPEN

S2 CLOSED

S3 = +1V

S1 CLOSED

S2 OPEN

S3 = -1V

S1 OPEN

S2 CLOSED

S3 = +1V

S1 CLOSED

S2 OPEN

S3 = -1V

t

RZH

, t

RZH(SHDN)

t

RZL

, t

RZL(SHDN)

t

RLZ

t

RHZ

V

CC

/2

V

CC

/2

V

CC

(V

OL

+ V

CC

)/2

V

CC

V

CC

V

OL

V

CC

/2

Figure 8. Receiver Enable and Disable Times

Test Circuits and Waveforms (continued)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16

MAX13485E/MAX13486E 1
6, 8, 10L UDFN.EPS 16

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