MAX3293 datasheet(4/11 Pages) MAXIM

4 / 11 page

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

RS-422 Transmitters

_______________________________________________________________________________________

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: ∆VOD and ∆VOC are the changes in VOD and VOC, 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)

(VCC = +3.3V ±5%, TA = +25°C, unless otherwise noted. Typical values are at VCC = +3.3V.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

tPLH

Driver Propagation Delay

tPHL

Figures 2, 3; RDIFF = 54Ω, CL = 50pF

TA = -40°C to +125°C

18.5

TA < +85°C

TA = -40°C to +125°C

18.5

Driver Differential Output Rise

or Fall Time

Figures 2, 3;

RDIFF = 54Ω,

CL = 50pF

TA < +85°C

Driver Output Skew

tSKEW

Figures 2, 3; RDIFF = 54Ω, CL = 50pF,

tSKEW = | tPLH - tPHL |

5ns

Differential Driver Output Skew

tDSKEW

Figures 2, 3; RDIFF = 54Ω, CL = 50pF

Figures 2, 3; RDIFF = 54Ω, CL = 50pF,

TA ≤ +85°C

Maximum Data Rate

Figures 2, 3; RDIFF = 54Ω, CL = 50pF

Mbps

Driver Enable to Output High

tZH

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF

400

Driver Enable to Output Low

tZL

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF

400

Driver Disable Time from Low

tLZ

Figures 4, 5; S1 closed, RL = 500Ω,

CL = 100pF

100

Driver Disable Time from High

tHZ

Figures 4, 5; S2 closed, RL = 500Ω,

CL = 100pF

100

Device-to-Device Propagation

Delay Matching

Same power supply, maximum temperature

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

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