MAX3490ESA 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MAX3490ESA
Maxim Integrated
MAX3490ESA Datasheet PDF : 16 Pages
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3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
GENERATOR
(NOTE 4)
50Ω
VID
R
OUT
CL = 15pF
(NOTE 5)
IN
1.5V
tRPLH
1.5V
0V
VOM =
VCC
2
OUT
Figure 11. Receiver Propagation Delay
1.5V
-1.5V
S3
VID R
GENERATOR
(NOTE 4)
50Ω
1k
CL
(NOTE 5)
VOM
S1
S2
3.0V
1.5V
0V
tRPHL
VCC
VOM
0V
VCC
3V
3V
S1 OPEN
S1 CLOSED
IN
1.5V
S2 CLOSED
IN
1.5V
S2 OPEN
0V S3 = 1.5V
0V S3 = -1.5V
tPRZH
tPRSH
VOH
tPRZL
tPRSL
VCC
OUT
1.5V
OUT
1.5V
0V
VOL
IN
OUT 0.25V
1.5V
tPRHZ
3V
S1 OPEN
S2 CLOSED
0V S3 = 1.5V
VOH
0V
Figure 12. Receiver Enable and Disable Times
IN
1.5V
tPRLZ
OUT
0.25V
3V
S1 CLOSED
S2 OPEN
0V S3 = -1.5V
VCC
VOL
Note 4: The input pulse is supplied by a generator with the following characteristics: PRR = 250kHz, 50% duty cycle, tr ≤ 6.0ns, ZO = 50Ω.
Note 5: CL includes probe and stray capacitance.
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