MAX491CSD Maxim Integrated Products, MAX491CSD Datasheet - Page 4

• Manufacturer Part Number: MAX491CSD
• Description: IC TRANS RS485/RS422 14-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX491CSD

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Case: SOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1657679

SWITCHING CHARACTERISTICS—MAX483, MAX487/MAX488/MAX489
(V
Low-Power, Slew-Rate-Limited
RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS—MAX481/MAX485, MAX490/MAX491, MAX1487 (continued)
(V
4
Driver Enable from Shutdown to
Output High (MAX481)
Driver Enable from Shutdown to
Output Low (MAX481)
Receiver Enable from Shutdown
to Output High (MAX481)
Receiver Enable from Shutdown
to Output Low (MAX481)
Driver Input to Output
Driver Output Skew to Output
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
I
Receiver Skew
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable Time from Low
Receiver Disable Time from High
Maximum Data Rate
Time to Shutdown
Driver Enable from Shutdown to
Output High
Driver Enable from Shutdown to
Output Low
Receiver Enable from Shutdown
to Output High
Receiver Enable from Shutdown
to Output Low
CC
CC
t
PLH
_______________________________________________________________________________________
= 5V ±5%, T
= 5V ±5%, T
- t
PHL
PARAMETER
PARAMETER
I
Differential
A
A
= T
= T
MIN
MIN
to T
to T
MAX
MAX
SYMBOL
t
t
t
t
, unless otherwise noted.) (Notes 1, 2)
, unless otherwise noted.) (Notes 1, 2)
t
t
SYMBOL
t
t
ZH(SHDN)
ZL(SHDN)
ZH(SHDN)
ZL(SHDN)
ZH(SHDN)
ZH(SHDN)
ZL(SHDN)
ZL(SHDN)
t
t
t
SKEW
t
f
SHDN
t
t
t
t
R
t
t
SKD
t
t
MAX
PLH
PHL
t
t
PLH
PHL
t
t
ZH
HZ
ZH
HZ
ZL
LZ
ZL
LZ
, t
F
Figures 7 and 9, C
Figures 7 and 9, C
Figures 5 and 11, C
A - B = 2V
Figures 5 and 11, C
B - A = 2V
Figures 6 and 8, R
C
Figures 6 and 8, R
C
Figures 6 and 8, R
C
Figures 7 and 9, C
Figures 7 and 9, C
Figures 7 and 9, C
Figures 7 and 9, C
Figures 6 and 10, R
C
Figures 6 and 10, R
C
Figures 5 and 11, C
Figures 5 and 11, C
Figures 5 and 11, C
Figures 5 and 11, C
t
MAX483/MAX487 (Note 5)
MAX483/MAX487, Figures 7 and 9,
C
MAX483/MAX487, Figures 7 and 9,
C
MAX483/MAX487, Figures 5 and 11,
C
MAX483/MAX487, Figures 5 and 11,
C
PLH
L1
L1
L1
L1
L1
L
L
L
L
= 100pF, S2 closed
= 100pF, S1 closed
= 15pF, S2 closed
= 15pF, S1 closed
, t
= C
= C
= C
= C
= C
PHL
L2
L2
L2
L2
L2
< 50% of data period
= 100pF
= 100pF
= 100pF
= 100pF
= 100pF
CONDITIONS
CONDITIONS
DIFF
DIFF
DIFF
L
L
L
L
L
L
L
L
DIFF
DIFF
RL
RL
RL
RL
= 100pF, S2 closed
= 100pF, S1 closed
= 100pF, S2 closed
= 100pF, S1 closed
= 15pF, S1 closed
= 15pF, S2 closed
= 15pF, S2 closed,
= 15pF, S1 closed,
= 15pF, S1 closed
= 15pF, S2 closed
= 15pF, S1 closed
= 15pF, S2 closed
= 54Ω,
= 54Ω,
= 54Ω,
= 54Ω,
= 54Ω,
MIN
MIN
250
250
250
250
300
300
250
250
250
250
50
TYP
TYP
300
300
800
800
100
100
200
40
40
20
20
20
20
1000
1000
2000
2000
2000
2000
2000
3000
3000
2000
2000
2000
2000
2500
2500
MAX
MAX
100
100
800
600
50
50
50
50
UNITS
UNITS
kbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns