MAX3430EPA datasheet(6/13 Pages) MAXIM

Part #	MAX3430EPA

Description	짹80V Fault-Protected, Fail-Safe, 1/4-Unit Load, 3.3V RS-485 Transceiver

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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6 / 13 page

±80V Fault-Protected, Fail-Safe,

1/4-Unit Load, +3.3V RS-485 Transceiver

6

_______________________________________________________________________________________

VOD

VOC

2

RL

2

RL

A

B

Figure 1. Driver DC Test Load

VO

3V

RL

CL

DI

DE

A

B

Figure 2. Driver Timing Test Circuit

tDPLH

tDPHL

DI

0

VCC

A

B

1/2 VO

VOD = V (A) - V (B)

tSKEW = |tDPLH - tDPHL|

VCC/2

tDR

tDF

VO

20%

80%

20%

VO

Figure 3. Driver Propagation Delays

VCC

50

Ω

RL = 500

Ω

CL

50pF

GENERATOR

D

0 OR +3V

OUT

S1

VCC

0

0.25V

VOL

tDZL, tDZL(SHDN)

VOM = (VOL + VCC)/2

VCC/2

VCC

OUT

DE

tDLZ

Figure 4. Driver Enable and Disable Times (tDZL, tDLZ,

tDLZ(SHDN))

VCC

0

VOH

0.25V

50

Ω

RL = 500

Ω

CL

50pF

GENERATOR

D

0 OR +3V

tDZH, tDZH(SHDN)

VOM = (0 + VOH)/2

VCC/2

OUT

S1

DE

tDHZ

Figure 5. Driver Enable and Disable Times (tDHZ, tDZH, tDZH(SHDN))

Test Circuits/Timing Diagrams

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