MAX3032ECSE データシートの表示（PDF） - Maxim Integrated

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MAX3032ECSE

±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters

Maxim Integrated 

DI_+

VOD

DI_-

±15kV ESD-Protected, 3.3V Quad

RS-422 Transmitters

Test Circuits and Timing Diagrams

RL

2

VOC

RL

2

CL

DO_+

DI_

VOD

RL

CL

DO_-

CL

Figure 1. Differential Driver DC Test Circuit

Figure 2. Differential Driver Propagation Delay and Transition

Time Test Circuit

3V

DI

1.5V

0V

tDPLH

tDPHL

1.5V

1/2 VO

DO_-

VO

DO_+

1/2 VO

VO

VDIFF 0V

10%

VDIFF = V (DO_+) - V (DO_-)

90%

90%

10%

-VO

tR

tF

tSKEW = |tDPLH - tDPHL|

Figure 3. Differential Driver Propagation Delay and Transition

Waveform

OUTPUT

UNDER TEST

RL

CL

S1

VCC

S2

ENABLE SIGNAL IS ONE OF THE POSSIBLE

ENABLE CONFIGURATIONS (SEE TRUTH TABLE).

Figure 4. Driver Enable/Disable Delays Test Circuit

3V

EN

1.5V

1.5V

0V

tDZL

tDLZ

VOL

1.5V OUTPUT NORMALLY LOW

VOL + 0.3V

VOH

OUTPUT NORMALLY HIGH

1.5V

0V

VOH - 0.3V

tDZH

tDHZ

ENABLE SIGNAL IS ONE OF THE POSSIBLE

ENABLE CONFIGURATIONS (SEE TRUTH TABLE).

Figure 5. Driver Enable/Disable Waveform

VCC

DO_+

A

DI

GND

A

DO_-

Figure 6. Short-Circuit Measurements

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