MAX13451EAUD+ datasheet(5/17 Pages) MAXIM

Part #	MAX13451EAUD+

Description	RS-485 Transceivers with Integrated 100廓/120廓 Termination Resistors

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Manufacturer	MAXIM [Maxim Integrated Products]

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RS-485 Transceivers with Integrated

100Ω/120Ω Termination Resistors

_______________________________________________________________________________________ 5

SWITCHING CHARACTERISTICS—SRL = LOW

(VCC = +4.5V to +5.5V, VL = +1.62V to 4.2V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V,

VL = +1.8V, and TA = +25NC.) (Note 2)

Note 2: All devices are 100% production tested at TA = +25°C. Limits over temperature are guaranteed by design.

Note 3: Termination resistance is disabled (TERM = high).

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DRIVER

Driver Propagation Delay

tDPLH

RDIFF = 54I, CL = 50pF, Figures 2 and 3

50

ns

tDPHL

50

Differential Driver Output Skew

|tDPLH - tDPHL|

tDSKEW

RDIFF = 54I, CL = 50pF, Figure 3

6

ns

Driver Differential Output Rise or

Fall Time

tHL, tLH

RDIFF = 54I, CL = 50pF, Figures 2 and 3

15

ns

Maximum Data Rate

DRMAX

20

Mbps

Driver Enable from Shutdown to

Output High

tDZH(SHDN)

S2 closed, RL = 500I, CL = 100pF,

Figures 4 and 5

2000

ns

Driver Enable from Shutdown to

Output Low

tDZL(SHDN)

S1 closed, RL = 500I, CL = 100pF,

Figures 4 and 5

2000

ns

Driver Disable Delay

tDLZ, tDHZ Figures 4 and 5

100

ns

Driver Enable Delay

tDZL, tDZH Figures 4 and 5

100

ns

RECEIVER

Receiver Propagation Delay

tRPLH

CL = 15pF, |VID| R 2.0V; tLH, tHL P 15ns,

Figures 6 and 7

50

ns

tRPHL

50

Receiver Output Skew

tRSKEW

CL = 15pF, Figures 6 and 7

6

ns

Maximum Data Rate

DRMAX

20

Mbps

Receiver Enable to Output High

tRZH

S2 closed, CL = 100pF, RL = 500I,

Figures 8 and 9

50

ns

Receiver Enable to Output Low

tRZL

S1 closed, CL = 100pF, RL = 500I,

Figures 8 and 9

50

ns

Receiver Disable Time from High

tRHZ

Figures 8 and 9

50

ns

Receiver Disable Time from Low

tRLZ

Figures 8 and 9

50

ns

Receiver Enable from Shutdown

to Output High

tRZH(SHDN) Figures 8 and 9

2000

ns

Receiver Enable from Shutdown

to Output Low

tRZL(SHDN) Figures 8 and 9

2000

ns

TERMINATION RESISTOR

Turn-Off Time

tRTZ

Figure 10

120

F

s

Turn-On Time

tRTEN

Figure 10

1

F

s

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