MAX3463 查看數據表（PDF） - Maxim Integrated
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MAX3463 Datasheet PDF : 14 Pages
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+5V, Fail-Safe, 20Mbps, Profibus RS-485/
RS-422 Transceivers
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1)
PARAMETER
Receiver Input Hysteresis
SYMBOL
CONDITIONS
∆VTH VA + VB = 0
MIN TYP MAX
20
Receiver Output High Voltage
VOH
IO = -4mA, VA - VB = VTH
VCC - 1.5
Receiver Output Low Voltage
Three-State Output Current at
Receiver
VOL
IOZR
IO = 4mA, VB - VA = VTH
0 ≤ VO ≤ VCC
Receiver Input Resistance
RIN
-7V ≤ VCM ≤ 12V
48
Receiver Output Short-Circuit
Current
IOSR
0 ≤ VRO ≤ VCC
±7
SUPPLY CURRENT
Normal Operation (static condition)
Supply Current in SHDN
SWITCHING CHARACTERISTICS
IQ
ISHDN
No load, DI = VCC or DI = GND
DE = GND and RE = VCC, or SHDN = VCC
Driver Propagation Delay
tPLH
Figures 6 and 7, RDIFF = 54Ω,
tPHL
CL = 50pF
Driver Differential Output Rise or
Fall Time
tR
Figures 6 and 7, RDIFF = 54Ω,
tF
CL = 50pF
Driver Output Skew |tPLH - tPHL|
tSKEW
Figures 6 and 7, RDIFF = 54Ω,
CL = 50pF, TXP = GND or floating
Maximum Data Rate
20
Driver Enable to Output High
tZH
Figures 8 and 9, S2 closed, RL = 500Ω,
CL = 50pF
Driver Enable to Output Low
tZL
Figures 8 and 9, S1 closed, RL = 500Ω,
CL = 50pF
Driver Disable Time from Low
tLZ
Figures 8 and 9, S1 closed, RL = 500Ω,
CL = 50pF
Driver Disable Time from High
tHZ
Figures 8 and 9, S2 closed, RL = 500Ω,
CL = 50pF
Receiver Propagation Delay
tPLH
Figure 10, CL = 15pF (Note 4)
tPHL
Receiver Output Skew |tPLH - tPHL|
tSKEW
Figure 10, CL = 15pF, RXP = GND or
floating (Note 4)
Receiver Enable to Output Low
tZL
Figures 8 and 11, RL = 1kΩ, CL = 15pF,
S1 closed (Note 4)
Receiver Enable to Output High
tZH
Figures 8 and 11, RL = 1kΩ, CL = 15pF,
S2 closed (Note 4)
Receiver Disable Time from Low
tLZ
Figures 8 and 11, RL = 1kΩ, CL = 15pF,
S1 closed (Note 4)
Receiver Disable Time from High
tHZ
Figures 8 and 11, RL = 1kΩ, CL = 15pF,
S2 closed (Note 4)
0.4
±1
±95
2.5
4
1
10
20
20
2
100
100
100
100
20
2
100
100
100
100
UNITS
mV
V
V
µA
kΩ
mA
mA
µA
ns
ns
ns
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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