Datasheet
MAX3040–MAX3045
±10kV ESD-Protected, Quad 5V RS-485/RS-422
Transmitters
_______________________________________________________________________________________ 3
SWITCHING CHARACTERISTICS—MAX3040/MAX3043
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Data Rate f
MAX
250
kbps
t
PLH
0.7 1.5
Driver Propagation Delay
t
PHL
Figures 2 and 3,
R
DIFF
= 54Ω, C
DIFF
= 50pF
0.7 1.5
µs
t
F
0.48
0.75
1.33
Driver Differential Output
Rise-Time/Fall-Time
t
R
Figures 2 and 3,
R
DIFF
= 54Ω, C
DIFF
= 50pF
0.48
0.75
1.33
µs
t
DSKEW
Different chips
±350
Skew Driver to Driver
t
SSKEW
Same chip
Figures 2 and 3,
R
DIFF
= 54Ω,
C
DIFF
= 50pF
±100
ns
Driver Differential Output Skew
| t
PLH
- t
PHL
|
t
SKEW
Figures 2 and 3,
R
DIFF
= 54Ω, C
DIFF
= 50pF
±100
ns
Driver Enable to Output High t
ZH
MAX3040, Figures 4 and 5, S2 closed,
R
L
= 500Ω, C
L
= 100pF
2.0 µs
Driver Enable from Shutdown to
Output High
t
ZH(SHDN)
Figures 4 and 5, S2 closed,
R
L
= 500Ω, C
L
= 100pF
2.0 µs
Driver Enable to Output Low t
ZL
MAX3040, Figures 4 and 5, S1 closed,
R
L
= 500Ω, C
L
= 100pF
2.0 µs
Driver Enable from Shutdown to
Output Low
t
ZL(SHDN)
Figures 4 and 5, S1 closed,
R
L
= 500Ω, C
L
= 100pF
2.0 µs
Driver Disable Time from Low t
LZ
Figures 4 and 5, S1 closed,
R
L
= 500Ω, C
L
= 15pF
500
ns
Driver Disable Time from High t
HZ
Figures 4 and 5, S2 closed,
R
L
= 500Ω, C
L
= 15pF
500
ns
SWITCHING CHARACTERISTICS—MAX3041/MAX3044
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Data Rate f
MAX
2.5
Mbps
t
PLH
70
150
Driver Propagation Delay
t
PHL
Figures 2 and 3,
R
DIFF
= 54Ω, C
DIFF
= 50pF
70
150
ns
t
F
33 70
133
Driver Differential Output
Rise-Time/Fall-Time
t
R
Figures 2 and 3,
R
DIFF
= 54Ω, C
DIFF
= 50pF
33 70
133
ns
t
DSKEW
Different chips
±52
Skew Driver to Driver
t
SSKEW
Same chip
Figures 2 and 3,
R
DIFF
= 54Ω,
C
DIFF
= 50pF
±15
ns
Driver Differential Output Skew
| t
PLH
- t
PHL
|
t
SKEW
Figures 2 and 3,
R
DIFF
= 54Ω, C
DIFF
= 50pF
±15
ns
Driver Enable to Output High t
ZH
MAX3041, Figures 4 and 5, S2 closed,
R
L
= 500Ω, C
L
= 100pF
400
ns