Rainbow-electronics MAX3295 Manual de usuario descargar pdf (Pagina 4)

MAX3293/MAX3294/MAX3295

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

RS-422 Transmitters

4 _______________________________________________________________________________________

Note 1: Devices production tested at +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to device

ground, unless otherwise noted.

Note 3: ∆V

and ∆V

are the changes in V

and V

, respectively, when the DI input changes state.

Note 4: The maximum current applies to peak current just prior to foldback current limiting.

Note 5: Not production tested. Guaranteed by design.

SWITCHING CHARACTERISTICS (MAX3295)

= +3.3V ±5%, T

= +25°C, unless otherwise noted. Typical values are at V

= +3.3V.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

PLH

Driver Propagation Delay

PHL

Figures 2, 3; R

DIFF

= 54Ω, C

= 50pF

= -40°C to +125°C 18.5

< +85°C15

= -40°C to +125°C 18.5

Driver Differential Output Rise

or Fall Time

Figures 2, 3;

DIFF

= 54Ω,

= 50pF

< +85°C15

Driver Output Skew t

SKEW

Figures 2, 3; R

DIFF

= 54Ω, C

= 50pF,

SKEW

= | t

PLH

- t

PHL

5ns

Differential Driver Output Skew t

DSKEW

Figures 2, 3; R

DIFF

= 54Ω, C

= 50pF 5 ns

Figures 2, 3; R

DIFF

= 54Ω, C

= 50pF,

≤ +85°C

Maximum Data Rate

Figures 2, 3; R

DIFF

= 54Ω, C

= 50pF 16

Mbps

Driver Enable to Output High t

Figures 4, 5; S2 closed, R

= 500Ω,

= 100pF

400 ns

Driver Enable to Output Low t

Figures 4, 5; S1 closed, R

= 500Ω,

= 100pF

400 ns

Driver Disable Time from Low t

Figures 4, 5; S1 closed, R

= 500Ω,

= 100pF

100 ns

Driver Disable Time from High t

Figures 4, 5; S2 closed, R

= 500Ω,

= 100pF

100 ns

Device-to-Device Propagation

Delay Matching

Same power supply, maximum temperature

difference between devices = +30°C (Note 5)

25 ns

1 2 3 4 5 6 7 8 9 10 11

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Rainbow-electronics MAX3295 Manual de usuario Pagina 4

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