MAX3293/MAX3294/MAX3295
20Mbps, +3.3V, SOT23 RS-485/
RS-422 Transmitters
_______________________________________________________________________________________ 3
SWITCHING CHARACTERISTICS (MAX3293)
(V
CC
= +3.3V ±5%, T
A
= +25°C, unless otherwise noted. Typical values are at V
CC
= +3.3V.)
SWITCHING CHARACTERISTICS (MAX3294)
(V
CC
= +3.3V ±5%, T
A
= +25°C, unless otherwise noted. Typical values are at V
CC
= +3.3V.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
t
PLH
400 1300
Driver Propagation Delay
t
PHL
Figures 2, 3; R
DIFF
= 54Ω,
C
L
= 50pF
400 1300
ns
t
R
400 1200
Driver Differential Output Rise
or Fall Time
t
F
Figures 2, 3; R
DIFF
= 54Ω,
C
L
= 50pF
400 1200
ns
Driver Output Skew t
SKEW
Figures 2, 3; R
DIFF
= 54Ω, C
L
= 50pF,
t
SKEW
= | t
PLH
- t
PHL
| (Note 5)
-400 +400 ns
Differential Driver Output Skew t
DSKEW
Figures 2, 3; R
DIFF
= 54Ω, C
L
= 50pF -100 +100 ns
Maximum Data Rate Figures 2, 3; R
DIFF
= 54Ω, C
L
= 50pF 250 kbps
Driver Enable to Output High t
ZH
Figures 4, 5; S2 closed, R
L
= 500Ω,
C
L
= 100pF
2000 ns
Driver Enable to Output Low t
ZL
Figures 4, 5; S1 closed, R
L
= 500Ω,
C
L
= 100pF
2000 ns
Driver Disable Time from Low t
LZ
Figures 4, 5; S1 closed, R
L
= 500Ω,
C
L
= 100pF
1000 ns
Driver Disable Time from High t
HZ
Figures 4, 5; S2 closed, R
L
= 500Ω,
C
L
= 100pF
1000 ns
Device-to-Device Propagation
Delay Matching
Same power supply, maximum temperature
difference between devices = +30°C (Note 5)
900 ns
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
t
PLH
24 70
Driver Propagation Delay
t
PHL
Figures 2, 3; R
DIFF
= 54Ω,
C
L
= 50pF
24 70
ns
t
R
10 70
Driver Differential Output Rise
or Fall Time
t
F
Figures 2, 3; R
DIFF
= 54Ω,
C
L
= 50pF
10 70
ns
Driver Output Skew t
SKEW
Figures 2, 3; R
DIFF
= 54Ω, C
L
= 50pF,
t
SKEW
= | t
PLH
- t
PHL
| (Note 5)
-40 +40 ns
Differential Driver Output Skew t
DSKEW
Figures 2, 3; R
DIFF
= 54Ω, C
L
= 50pF -6 +6 ns
Maximum Data Rate Figures 2, 3; R
DIFF
= 54Ω, C
L
= 50pF 2.5 Mbps
Driver Enable to Output High t
ZH
Figures 4, 5; S2 closed, R
L
= 500Ω,
C
L
= 100pF
400 ns
Driver Enable to Output Low t
ZL
Figures 4, 5; S1 closed, R
L
= 500Ω,
C
L
= 100pF
400 ns
Driver Disable Time from Low t
LZ
Figures 4, 5; S1 closed, R
L
= 500Ω,
C
L
= 100pF
100 ns
Driver Disable Time from High t
HZ
Figures 4, 5; S2 closed, R
L
= 500Ω,
C
L
= 100pF
100 ns
Device-to-Device Propagation
Delay Matching
Same power supply, maximum temperature
difference between devices = +30°C (Note 5)
46 ns
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