adm2481 Analog Devices, Inc., adm2481 Datasheet - Page 4

• Manufacturer Part Number: adm2481
• Description: Half-duplex, Icoupler Isolated Rs-485 Transceiver Adm2481
• Manufacturer: Analog Devices, Inc.

ADM2481
TIMING SPECIFICATIONS
3.0 V ≤ V
Table 2.
Parameter
DRIVER
RECEIVER
PACKAGE CHARACTERISTICS
Table 3.
Parameter
Resistance (Input-Output)
Capacitance (Input-Output)
Input Capacitance
1
2
REGULATORY INFORMATION (PENDING)
Table 4. ADM2481 Approvals
Organization
UL
VDE
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 5.
Parameter
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
Minimum External Tracking (Creepage)
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
Device is considered a 2-terminal device: Pin 1 to Pin 8 are shorted together, and Pin 9 to Pin16 are shorted together.
Input capacitance is from any input data pin to ground.
Maximum Data Rate
Propagation Delay
Skew
Rise/Fall Time
Enable Time
Disable Time
Propagation Delay
Differential Skew
Enable Time
Disable Time
DD1
≤ 5.5 V, 4.75 V ≤ V
Approval Type
Recognized under the Component Recognition
Program of Underwriters Laboratories, Inc.
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10): 2006-12
2
1
1
Symbol
t
t
t
t
t
PLH
SKEW
R
PLH
SKEW
, t
DD2
, t
, t
F
PHL
PHL
≤ 5.25 V, T
Min
500
250
200
400
Symbol
R
C
C
I-O
I-O
I
A
= T
Typ
25
40
MIN
to T
Min
Symbol
L(I01)
L(I02)
CTI
MAX
Max
620
40
600
1050
1050
1050
250
70
70
Rev. 0 | Page 4 of 20
Typ
10
3
4
, unless otherwise noted.
12
In accordance with UL 1577, each ADM2481 is proof tested by
applying an insulation test voltage of ≥ 3000 V rms for 1 second
(current leakage detection limit = 5 μA).
In accordance with DIN V VDE V 0884-10, each ADM2481 is proof
tested by applying an insulation test voltage of ≥ 1050 V peak for
1 second (partial discharge detection limit = 5 pC).
Value
Unit
kbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
2500
7.7
7.6
0.017 min
>175
IIIa
Max
Test Conditions/Comments
R
R
R
R
R
C
C
R
R
Unit
Ω
pF
pF
L
L
L
L
L
L
L
L
L
= 54 Ω, C
= 54 Ω, C
= 54 Ω, C
= 500 Ω, C
= 500 Ω, C
= 15 pF, see Figure 20 and Figure 23
= 15 pF, see Figure 20 and Figure 23
= 1 kΩ, C
= 1 kΩ, C
Unit
V rms
mm
mm
mm
V
L
L
L1
L1
L1
= 15 pF, see Figure 21 and Figure 25
= 15 pF, see Figure 21 and Figure 25
L
L
Test Conditions
f = 1 MHz
Conditions
1-minute duration
Measured from input terminals to output
terminals, shortest distance through air
Measured from input terminals to output
terminals, shortest distance along body
Insulation distance through insulation
Material Group (Table 1 in DIN VDE 0110,1/89)
DIN IEC 112/VDE 0303 Part 1
= C
= C
= C
= 100 pF, see Figure 19 and Figure 24
= 15 pF, see Figure 19 and Figure 24
L2
L2
L2
= 100 pF, see Figure 18 and Figure 22
= 100 pF, see Figure 18 and Figure 22
= 100 pF, see Figure 18 and Figure 22