MAX13450E_1011 Datasheet, PDF (4/17 Pages) Maxim Integrated Products – RS-485 Transceivers with Integrated 100Ω/120Ω Termination Resistors

RS-485 Transceivers with Integrated
100Ω/120Ω Termination Resistors
SWITCHING CHARACTERISTICS—SRL = HIGH
(VCC = +4.5V to +5.5V, VL = +1.62V to VCC, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V,
VL = +1.8V and TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DRIVER
Driver Propagation Delay
tDPLH
tDPHL
RDIFF = 54I, CL = 50pF, Figures 2 and 3
800
ns
800
Differential Driver Output Skew
|tDPLH - tDPHL|
tDSKEW R_DIFF = 54I, C_L = 50pF, Figure 3
100
ns
Driver Differential Output Rise or
Fall Time
tHL
tLH
100
RDIFF = 54I, CL = 50pF, Figures 2 and 3
100
600
ns
600
Maximum Data Rate
DRMAX
500
kbps
Driver Enable from Shutdown to
Output High
tDZH(SHDN)
S2 closed, RL = 500I, CL = 100pF,
Figures 4 and 5
4500
ns
Driver Enable from Shutdown to
Output Low
tDZL(SHDN)
S1 closed, RL = 500I, CL = 100pF,
Figures 4 and 5
5200
ns
Driver Disable Delay
tDLZ, tDHZ Figures 4 and 5
Driver Enable Delay
tDZL, tDZH Figures 4 and 5
RECEIVER
Receiver Propagation Delay
tRPLH
tRPHL
CL = 15pF, |VID| R 2.0V; tLH, tHL P 15ns,
Figures 6 and 7
Receiver Output Skew
tRSKEW CL = 15pF, Figures 6 and 7
Maximum Data Rate
DRMAX
500
Receiver Enable to Output High
tRZH
S2 closed, CL = 100pF, RL = 500I,
Figures 8 and 9
100
ns
2500
ns
200
ns
200
30
ns
kbps
50
ns
Receiver Enable to Output Low
tRZL
S1 closed, CL = 100pF, RL = 500I,
Figures 8 and 9
50
ns
Receiver Disable from High
Receiver Disable from Low
Receiver Enable from Shutdown
to Output High
tRHZ
tRLZ
Figures 8 and 9
Figures 8 and 9
tRZH(SHDN) Figures 8 and 9
50
ns
50
ns
5000
ns
Receiver Enable from Shutdown
to Output Low
tRZL(SHDN) Figures 8 and 9
5000
ns
TERMINATION RESISTOR
Turn-Off Time
Turn-On Time
tRTZ
tRTEN
Figure 10
Figure 10
120
Fs
1
Fs
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