Rainbow-electronics MAX3295 Manual do Utilizador descarregar pdf (Página 7)

DRIVER PROPAGATION DELAY

MAX3293-95 toc10

20ns/div

Y, Z: 1V/div

DI: 2V/div

Y, Z

Typical Operating Characteristics (continued)

= +3.3V, T

= +25°C, unless otherwise noted.)

MAX3293/MAX3294/MAX3295

20Mbps, +3.3V, SOT23 RS-485/

RS-422 Transmitters

_______________________________________________________________________________________ 7

ENABLE RESPONSE TIME

MAX3293-95 toc11

40ns/div

Y-Z

Y, Z, DE: 2V/div

UNLOADED DRIVER OUTPUT

WAVEFORM (f

= 16Mbps)

MAX3293-95 toc12

20ns/div

Y, Z: 1V/div

Y, Z

LOADED DRIVER OUTPUT WAVEFORM

= 16Mbps)

MAX3293-95 toc13

20ns/div

Y, Z: 500mV/div

Y, Z

EYE DIAGRAM (f

= 20Mbps)

MAX3293-95 toc14

10ns/div

Y, Z: 500mV/div

Y, Z

Pin Description

PIN NAME FUNCTION

1DI

Driver Input. A logic low on DI forces the noninverting output (Y) low and the inverting output (Z)

high. A logic high on DI forces the noninverting output (Y) high and the inverting output (Z) low.

Positive Supply. V

= +3.3V ±5%. Bypass V

to GND with a 0.1µF capacitor.

3DE

Driver Output Enable. Force DE high to enable driver. Pull DE low to disable the driver. Hot-swap

input, see the Hot-Swap Capability section.

4 Z Inverting RS-485/RS-422 Output

5 GND Ground

6 Y Noninverting RS-485/RS-422 Output

1 2 3 4 5 6 7 8 9 10 11

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