MAX3440E(2002) 查看數據表（PDF） - Maxim Integrated

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MAX3440E
(Rev.:2002)

±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers

Maxim Integrated 

±15kV ESD-Protected, ±60V Fault-Protected,

10Mbps, Fail-Safe RS-485/J1708 Transceivers

Test Circuits and Waveforms (continued)

1.5V

-1.5V

S3

A

VID R

RO

1kΩ

S1

S2

VCC

B

GENERATOR

(NOTE 4)

50Ω

CL = 20pF

(NOTE 5)

3V

S1 OPEN

RE

1.5V

S2 CLOSED

RE

tRPZH

tRPSH

tRPWAKE

S3 = 1.5V

0

VOH

RO

1.5V

RO

0

1.5V

tRPZL

tRPSL

1.5V

3V

S1 CLOSED

S2 OPEN

S3 = -1.5V

0

VCC

VOL

RE

RO 0.5V

1.5V

tRPHZ

3V

S1 OPEN

S2 CLOSED

RE

0

S3 = 1.5V

VOH

RO

1.5V

tRPLZ

0.5V

3V

S1 CLOSED

S2 OPEN

S3 = -1.5V

0

VCC

0

VOL

Figure 8. Receiver Enable and Disable Times

Note 4: The input pulse is supplied by a generator with the following characteristics: f = 5MHz, 50% duty cycle; tr ≤ 6ns; Z0 = 50Ω.

Note 5: CL includes probe and stray capacitance.

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