MAX1482/MAX1483
20A, 18-Unit-Load, Slew-Rate-Limited
RS-485 Transceivers
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3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
SWITCHING CHARACTERISTICS
(VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
MAX1482,
RE = 0V or VCC
0V
≤ VO ≤ VCC
MAX1483,
RE = 0V or VCC
DE = 0V, RE = VCC
DI = high or low, -7V
≤ VO ≤ 12V (Note 2)
CONDITIONS
55
85
20
35
25
45
mA
±7
±95
IOSR
Receiver Short-Circuit Current
A
20
35
ICC
No-Load Supply Current
A
0.1
10
ISHDN
Supply Current in Shutdown
mA
35
250
IOSD
Driver Short-Circuit Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
DE = VCC
DE = 0V
DE = VCC
DE = 0V
Figures 4 and 6, CL = 15pF, S2 closed
Figures 4 and 6, CL = 15pF, S1 closed
Figures 4 and 6, CL = 100pF, S1 closed
Figures 4 and 6, CL = 100pF, S2 closed
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Driver Enable to Output High
tZH
0.2
2
Driver Output Skew to Output
tR, tF
0.25
2
s
Driver Enable to Output Low
tZL
0.1
2
s
Driver Disable Time from Low
tLZ
0.3
3.0
s
Driver Disable Time from High
tHZ
0.3
3.0
s
Driver Input to Output
tPLH
2
tSKEW
800
s
CONDITIONS
Figures 3 and 5, RDIFF = 54
,
CL1 = CL2 = 100pF
Figures 3 and 5, RDIFF = 54
, CL1 = CL2 = 100pF
s
Figures 3 and 5, RDIFF = 54
, CL1 = CL2 = 100pF
Driver Rise or Fall Time
tPHL
2
ns
Receiver Input to Output
tPLH, tPHL Figures 3 and 7, RDIFF = 54
, CL1 = CL2 = 100pF
0.25
2.25
s
| tPLH - tPHL | Differential
Receiver Skew
tSKD
Figures 3 and 7, RDIFF = 54
, CL1 = CL2 = 100pF
160
ns
Receiver Enable to Output Low
tZL
Figures 2 and 8, CRL = 15pF, S1 closed
90
ns
Receiver Enable to Output High
tZH
Figures 2 and 8, CRL = 15pF, S2 closed
90
ns
Receiver Disable Time from Low
tLZ
Figures 2 and 8, CRL = 15pF, S1 closed
90
ns
Receiver Disable Time from High
tHZ
Figures 2 and 8, CRL = 15pF, S2 closed
90
ns
Maximum Data Rate
fMAX
250
kbps
Time to Shutdown
tSHDN
(Note 3)
50
200
600
ns
Driver Enable from Shutdown to
Output High
tZH(SHDN) Figures 4 and 6, CL = 100pF, S2 closed
2
s
Driver Enable from Shutdown to
Output Low
tZL(SHDN)
Figures 4 and 6, CL = 100pF, S1 closed
2
s
Receiver Enable from Shutdown
to Output High
tZH(SHDN)
Figures 2 and 8, CL = 15pF, S2 closed,
A - B = 2V
3
Receiver Enable from Shutdown
to Output Low
tZL(SHDN)
Figures 2 and 8, CL = 15pF, S1 closed,
B - A = 2V
3
s
Note 2: Applies to peak current. See Typical Operating Characteristics.
Note 3: The MAX1482/MAX1483 are put into shutdown by bringing
–
R
—
E
–
high and DE low. If the inputs are in this state for less
than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are
guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.