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MAX13442E Datasheet, PDF (5/18 Pages) Maxim Integrated Products – ±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 Transceivers
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±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
SWITCHING CHARACTERISTICS (MAX13443E)
(VCC = +4.75V to +5.25V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Driver Propagation Delay
Driver Differential Propagation Delay
Driver Differential Output
Transition Time
tPLHA,
tPLHB
tDPLH,
tDPHL
RL = 27Ω, CL = 50pF, Figure 3
RL = 54Ω, CL = 50pF, Figure 4
tLH,tHL RL = 54Ω, CL = 50pF, Figure 4
60
ns
60
ns
25
ns
Driver Output Skew
tSKEWAB,
tSKEWBA
RL = 54Ω, CL = 50pF,
tSKEWAB = |tPLHA - tPHLB|,
tSKEWBA = |tPLHB - tPHLA|
10
ns
Differential Driver Output Skew
tDSKEW
RL = 54Ω, CL = 50pF,
tDSKEW = |tDPLH - tDPHL|
Maximum Data Rate
fMAX
10
Driver Enable Time to Output High
tPDZH RL = 500Ω, CL = 50pF, Figure 5
Driver Disable Time from Output High
tPDHZ RL = 500Ω, CL = 50pF, Figure 5
Driver Enable Time from Shutdown to
Output High
tPDHS RL = 500Ω, CL = 50pF, Figure 5
Driver Enable Time to Output Low
Driver Disable Time from Output Low
Driver Enable Time from Shutdown to
Output Low
Driver Time to Shutdown
tPDZL
tPDLZ
tPDLS
tSHDN
RL = 500Ω, CL = 50pF, Figure 6
RL = 500Ω, CL = 50pF, Figure 6
RL = 500Ω, CL = 50pF, Figure 6
RL = 500Ω, CL = 50pF, Figure 6
Receiver Propagation Delay
tRPLH,
tRPHL
CL = 20pF, VID = 2V, VCM = 0V, Figure 7
Receiver Output Skew
Receiver Enable Time to Output High
Receiver Disable Time from Output High
Receiver Wake Time from Shutdown
tRSKEW
tRPZH
tRPHZ
tRPWAKE
CL = 20pF, tRSKEW = |tRPLH - tRPHL|
RL = 1kΩ, CL = 20pF, Figure 8
RL = 1kΩ, CL = 20pF, Figure 8
RL = 1kΩ, CL = 20pF, Figure 8
Receiver Enable Wake Time from
Shutdown
tRPSH RL = 1kΩ, CL = 20pF, Figure 8
Receiver Disable Time from Output Low
Receiver Time to Shutdown
tRPLZ
tSHDN
RL = 1kΩ, CL = 20pF, Figure 8
RL = 500Ω, CL = 50pF
10
ns
1200
1200
Mbps
ns
ns
4.2
µs
1200 ns
1200 ns
4.2
µs
800 ns
85
ns
15
ns
400 ns
400 ns
4.2
µs
400 ns
400 ns
800 ns
Note 2: ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 3: The short-circuit output current applies to peak current just before foldback current limiting. The short-circuit foldback out-
put current applies during current limiting to allow a recovery from bus contention.
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