ADM488 Analog Devices, ADM488 Datasheet - Page 2

• Manufacturer Part Number: ADM488
• Description: Full-Duplex/ Low Power/ Slew Rate Limited/ EIA RS-485 Transceivers
• Manufacturer: Analog Devices

Parameter
DRIVER
RECEIVER
POWER SUPPLY CURRENT
Specifications subject to change without notice.
TIMING SPECIFICATIONS
Parameter
DRIVER
RECEIVER
Specifications subject to change without notice.
ADM488/ADM489–SPECIFICATIONS
Differential Output Voltage, V
Common-Mode Output Voltage V
Output Short Circuit Current (V
Output Short Circuit Current (V
CMOS Input Logic Threshold Low, V
CMOS Input Logic Threshold High, V
Logic Input Current (DE, DI)
Differential Input Threshold Voltage, V
Input Voltage Hysteresis, V
Input Resistance
Input Current (A, B)
Logic Enable Input Current (RE)
CMOS Output Voltage Low, V
CMOS Output Voltage High, V
Short Circuit Output Current
Three-State Output Leakage Current
I
Propagation Delay Input to Output T
Driver O/P to O/P T
Driver Rise/Fall Time T
Driver Enable to Output Valid
Driver Disable Timing
Data Rate
Propagation Delay Input to Output T
Skew |T
Receiver Enable T
Receiver Disable T
Data Rate
CC
|V
|V
OD
OC
| for Complementary Output States
| for Complementary Output States
PLH
–T
PHL
|
EN1
EN2
SKEW
R
, T
F
TH
OD
OL
OH
OUT
OUT
OC
= High)
= Low)
PLH
PLH
INL
(V
INH
TH
CC
, T
, T
= +5 V
PHL
PHL
Min
2.0
1.5
1.5
2.0
–0.2
12
4.0
7
Min
250
250
250
300
250
250
250
10%. All specifications T
Typ
1.4
1.4
70
30
37
Typ
100
100
10
10
–2–
Max
5.0
5.0
5.0
5.0
0.2
3
0.2
250
250
0.8
+0.2
+1
–0.8
0.4
85
60
74
Max
2000
800
2000
2000
3000
2000
50
50
1.0
1
1.0
(V
otherwise noted)
Units
V
V
V
V
V
V
V
mA
mA
V
V
V
mV
k
mA
mA
V
V
mA
CC
Units
ns
ns
ns
ns
ns
kbps
ns
ns
ns
ns
kbps
A
A
A
A
A
MIN
= +5 V
to T
MAX
Test Conditions/Comments
R = , Figure 1
V
R = 27
V
R = 27
R = 27
R = 27
–7 V
–7 V
–7 V
V
–7 V
V
V
I
I
V
0.4 V
Outputs Unloaded, Receivers Enabled
DE = 0 V (Disabled)
DE = 5 V (Enabled)
Test Conditions/Comments
R
R
R
R
R
C
R
R
unless otherwise noted)
OUT
OUT
CC
TST
CM
IN
IN
OUT
L
L
L
L
L
L
L
10%. All specifications T
L
= 1 k , C
= 1 k , C
Diff = 54 , C
Diff = 54 , C
Diff = 54 , C
= 500 , C
= 500 , C
= 15 pF, Figure 5
= 12 V
= –7 V
= 5 V, R = 50
= 0 V
= +4.0 mA
= –4.0 mA
= –7 V to +12 V, Figure 2, V
= GND or V
V
V
V
V
V
O
O
CM
CM
OUT
(RS-485), Figure 1
or 50 , Figure 1
or 50 , Figure 1
or 50
+12 V
+12 V
L
L
+12 V
+12 V
L
L
= 15 pF, Figure 4
= 15 pF, Figure 4
+2.4 V
= 100 pF, Figure 2
= 15 pF, Figure 2
L1
L1
L1
CC
= C
= C
= C
(RS-422), Figure 1
L2
L2
L2
MIN
= 100 pF, Figure 5
= 100 pF, Figure 5
= 100 pF, Figure 5
to T
MAX
CC
unless
= 5 V
REV. 0
5%