M75176P Datasheet, PDF (5/9 Pages) Mitsubishi Electric Semiconductor – RS-485 TRANSCEIVER

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