MAX3085ESA datasheet(6/20 Pages) MAXIM

6 / 20 page

Fail-Safe, High-Speed (10Mbps),

Slew-Rate-Limited RS-485/RS-422 Transceivers

_______________________________________________________________________________________

SWITCHING CHARACTERISTICS—MAX3086–MAX3088, and MAX3089 with SRL = GND

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

tDPHL

Figures 6 and 12, CL = 100pF, S1 closed

Figures 7 and 9, RDIFF = 54Ω,

CL1 = CL2 = 100pF

3500

tRZL(SHDN)

Figures 7 and 9, RDIFF = 54Ω,

CL1 = CL2 = 100pF

Receiver Enable from Shutdown

to Output Low

Figures 7 and 9, RDIFF = 54Ω,

CL1 = CL2 = 100pF

Figures 6 and 12, CL = 100pF, S2 closed

Figures 8 and 10, CL = 15pF, S1 closed

Figures 8 and 10, CL = 15pF, S2 closed

Figures 6 and 12, CL = 100pF, S1 closed

Figures 11 and 13; | VID | ≥ 2.0V;

rise and fall time of VID ≤ 15ns

(Note 5)

Figures 6 and 12, CL = 100pF, S2 closed

Figures 11 and 13; | VID | ≥ 2.0V;

rise and fall time of VID ≤ 15ns

Figures 8 and 10, CL = 15pF, S2 closed

Figures 8 and 10, CL = 100pF, S2 closed

Figures 8 and 10, CL = 100pF, S1 closed

Figures 6 and 12, CL = 100pF, S1 closed

Figures 8 and 10, CL = 15pF, S1 closed

Figures 6 and 12, CL = 100pF, S2 closed

CONDITIONS

3500

tRZH(SHDN)

Receiver Enable from Shutdown

to Output High

250

tDZL(SHDN)

Driver Enable from Shutdown to

Output Low

250

tDZH(SHDN)

Driver Enable from Shutdown to

Output High

200

600

tSHDN

Time to Shutdown

tRHZ

Receiver Disable Time from

High

tRLZ

Receiver Disable Time from Low

tRZH

Receiver Enable to Output High

tDR, tDF

Driver Rise or Fall Time

-2.5

±10

tDSKEW

tDPLH

Driver Input to Output

Driver Output Skew

| tDPLH - tDPHL |

tRZL

Receiver Enable to Output Low

0±10

tRSKD

| tRPLH - tRPHL | Differential

Receiver Skew

106

150

tRPLH,

tRPHL

Receiver Input to Output

100

tDHZ

Driver Disable Time from High

Mbps

fMAX

Maximum Data Rate

150

tDZH

Driver Enable to Output High

150

tDZL

Driver Enable to Output Low

100

tDLZ

Driver Disable Time from Low

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Note 5: The device is put into shutdown by bringing RE high and DE low. If the enable inputs are in this state for less than 50ns, the

device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 600ns, the device is guaranteed

to have entered shutdown.

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