MAX3490E 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MAX3490E
Maxim Integrated
MAX3490E Datasheet PDF : 16 Pages
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3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
GENERATOR
(NOTE 4)
S1
D
50Ω
VCC
VOM
RL = 27Ω
OUT
CL = 15pF
(NOTE 5)
VOM =
VOH + VOL
2
≈ 1.5V
Figure 8. Driver Propagation Times
3V
IN
1.5V
1.5V
0V
tPLH
Y
OUT
VOM
tPHL
VOH
VOM
VOL
tPHL
tPLH
Z
OUT
VOM
VOH
VOM
VOL
0 OR 3V
GENERATOR
(NOTE 4)
S1
D
OUT
CL = 50pF
(NOTE 5)
50Ω
RL = 110Ω
VOM =
VOH + VOL
2
≈ 1.5V
Figure 9. Driver Enable and Disable Times (tPZH, tPSH, tPHZ)
0 OR 3V
GENERATOR
(NOTE 4)
S1
D
CL = 50pF
(NOTE 5)
50Ω
VCC
RL = 110Ω
OUT
3V
IN
1.5V
1.5V
0
tPZH
OUT
VOM
tPHZ
0.25V VOH
0
3V
IN
1.5V
1.5V
0
tPSL
OUT
VOM
tPLZ
VCC
0.25V
VOL
Figure 10. Driver Enable and Disable Times (tPZL, tPSL, tPLZ)
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