MAX3490E Просмотр технического описания (PDF) - Maxim Integrated
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производитель
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
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.3V ±0.3V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
Driver Short-Circuit Output Current
IOSD
VOUT = -7V
VOUT = 12V
-250
250
Receiver Short-Circuit Output Current IOSR 0 ≤ VRO ≤ VCC
±8
±60
IEC 1000-4-2 Air Discharge
±15
IEC 1000-4-2 Contact Discharge
(MAX3483E, MAX3485E,
±8
ESD Protection for Y, Z, A, B
MAX3486E, MAX3491E)
IEC 1000-4-2 Contact Discharge
(MAX3490E, MAX3488E)*
±6
Human Body Model
±15
*MAX3488E and MAX3491E will be compliant to ±8kV per IEC 1000-4-2 Contact Discharge by September 1999.
DRIVER SWITCHING CHARACTERISTICS—MAX3485E/MAX3490E/MAX3491E
(VCC = +3.3V, TA = +25°C.)
PARAMETER
SYMBOL CONDITIONS
MIN TYP MAX
Maximum Data Rate
12
15
Driver Differential Output Delay
tDD RL = 60Ω, Figure 7
1
22
35
Driver Differential Output Transition Time
tTD RL = 60Ω, Figure 7
3
11
25
Driver Propagation Delay, Low-to-High Level
tPLH RL = 27Ω, Figure 8
Driver Propagation Delay, High-to-Low Level
tPHL RL = 27Ω, Figure 8
|tPLH - tPHL| Driver Propagation-Delay Skew (Note 2)
tPDS RL = 27Ω, Figure 8
DRIVER-OUTPUT ENABLE/DISABLE TIMES (MAX3485E/MAX3491E only)
7
23
35
7
23
35
-1.4
±8
Driver-Output Enable Time to Low Level
tPZL RL = 110Ω, Figure 10
42
90
Driver-Output Enable Time to High Level
tPZH RL = 110Ω, Figure 9
42
90
Driver-Output Disable Time from High Level
Driver-Output Disable Time from Low Level
Driver-Output Enable Time from Shutdown to Low Level
Driver-Output Enable Time from Shutdown to High Level
tPHZ
tPLZ
tPSL
tPSH
RL = 110Ω, Figure 9
RL = 110Ω, Figure 10
RL = 110Ω, Figure 10
RL = 110Ω, Figure 9
35
80
35
80
650
900
650
900
DRIVER SWITCHING CHARACTERISTICS—MAX3486E
(VCC = +3.3V, TA = +25°C.)
PARAMETER
SYMBOL CONDITIONS
MIN TYP MAX
Maximum Data Rate
2.5
Driver Differential Output Delay
Driver Differential Output Transition Time
Driver Propagation Delay, Low-to-High Level
Driver Propagation Delay, High-to-Low Level
|tPLH - tPHL| Driver Propagation-Delay Skew (Note 2)
DRIVER-OUTPUT ENABLE/DISABLE TIMES
tDD RL = 60Ω, Figure 7
20
42
70
tTD RL = 60Ω, Figure 7
15
28
60
tPLH RL = 27Ω, Figure 8
20
42
75
tPHL RL = 27Ω, Figure 8
20
42
75
tPDS RL = 27Ω, Figure 8
-6
±12
Driver-Output Enable Time to Low Level
Driver-Output Enable Time to High Level
Driver-Output Disable Time from High Level
Driver-Output Disable Time from Low Level
Driver-Output Enable Time from Shutdown to Low Level
Driver-Output Enable Time from Shutdown to High Level
tPZL
tPZH
tPHZ
tPLZ
tPSL
tPSH
RL = 110Ω, Figure 10
RL = 110Ω, Figure 9
RL = 110Ω, Figure 9
RL = 110Ω, Figure 10
RL = 110Ω, Figure 10
RL = 110Ω, Figure 9
52
100
52
100
40
80
40
80
700 1000
700 1000
UNITS
mA
mA
kV
UNITS
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNITS
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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