M75178P データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M75178P

RS-485 TRANSCEIVER

MITSUBISHI ELECTRIC  

TEST CIRCUITS

Fig. 1

MITSUBISHI 〈DIGITAL ASSP〉

M75176P, M75177P

M75178P, M75179P

RS-485 TRANSCEIVER

VOD2

RL / 2

RL / 2

VOC

Driver differential output voltage 2, in-phase output voltage

Fig. 2

P.G.

(Note 5)

Input

1.5V

3V

1.5V

Input

RL

Output

CL

(Note 6)

0V

tDD

tDD

50Ω

3V

(M75178P is 0V)

Test circuit

Output

50%

90%

50%

10%

tTD

tTD

I/O waveform

Driver differential output delay time and transition time

Fig. 3

P.G.

(Note 5)

Input

50Ω

3V

(M75178P is 0V)

Test circuit

2.3V

RL

Output

CL

(Note 6)

Driver delay time

Input

1.5V

3V

1.5V

tPLH

2.3V

0V

tPHL

VOH

2.3V

Output

tPHL

tPLH

2.3V

VOL

VOH

2.3V

VOL

I/O waveform

Fig. 4

0V or 3V

P.G.

(Note 5)

Input

50Ω

Test circuit

Output

CL

RL

(Note 6)

(M75178P)

Input

(M75176/177P)

Output

Driver enable/disable time

1.5V

tPZH

3V

1.5V

0V

tPHZ

0.5V

VOH

2.3V

0V

I/O waveform

Fig. 5

3V or 0V

5V

RL

Output

(M75178P)

Input

(M75176/177P)

P.G.

(Note 5)

Input

50Ω

CL

(Note 6)

Output

Test circuit

Driver enable/disable time

Note 5: The pulse generator is PRR ≤ 1MHz, duty ratio = 50%, tr ≤ 6ns, tf ≤ 6ns, ZOUT = 50Ω.

6: CL includes jigs and probe capacitance.

1.5V

tPZL

3V

1.5V

0V

tPLZ

2.3V

I/O waveform

5V

0.5V

VOL

5

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