ADM2485(RevPrk) Просмотр технического описания (PDF) - Analog Devices
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ADM2485
(Rev.:RevPrk)
(Rev.:RevPrk)
Analog Devices
ADM2485 Datasheet PDF : 15 Pages
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Preliminary Technical Data
ADM2485
Parameter
Min
POWER SUPPLY CURRENT
Logic Side
Bus Side
COMMON-MODE TRANSIENT IMMUNITY1
25
HIGH FREQUENCY COMMON-MODE NOISE
IMMUNITY
Typ
Max
Unit Test Conditions/Comments
1.3
1.0
4.0
0.8
1.1
2.1
3.0
43.0
58.0
100
mA
mA
mA
mA
mA
mA
mA
mA
mA
kV/µs
mV
RTS = 0 V, VDD1 = 5.5 V
2 Mbps, VDD1 = 5.5 V, Figure 5
16 Mbps, VDD1 = 5.5 V, Figure 5
RTS = 0 V, VDD1 = 3 V
2 Mbps, VDD1 = 3 V, Figure 5
16 Mbps, VDD1 = 3 V, Figure 5
RTS = 0 V
2 Mbps, RTS = VDD1, Figure 5
16 Mbps, RTS = VDD1, Figure 5
VCM = 1 kV, Transient Magnitude =
800 V
VHF = +5V, −2 V < VTEST2 < 7 V,
1 < fTEST < 50 MHz, Figure 6
1 CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential
difference between the logic and bus sides. The transient magnitude is the range over which the common-mode is slewed. The common-mode voltage slew rates
apply to both rising and falling common-mode voltage edges.
TIMING SPECIFICATIONS
2.7 ≤ VDD1 ≤ 5.5 V, 4.75 V ≤ VDD2 ≤ 5.25 V, TA = TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Min
Typ
Max
Unit
DRIVER
Maximum Data Rate
16
Mbps
Propagation Delay Input to Output 25
45
55
ns
tPLH, tPHL
RTS-to-DE Propagation Delay
20
35
55
ns
Driver O/P to O/P tSKEW
2
5
ns
Rise/Fall Time tR, tF
5
15
ns
Enable Time
43
53
ns
Disable Time
43
55
ns
Enable Skew, |tAZH-tBZL|, |tAZL-tBZH|
1
3
ns
Disable Skew, |tAHZ-tBLZ|, |tALZ-tBHZ|
2
5
ns
RECEIVER
Propagation Delay tPLH, tPHL
25
45
55
ns
Differential Skew tSKEW
5
ns
Enable Time
3
13
ns
Disable Time
3
13
ns
Test Conditions/Comments
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF; See Figure 7.
See Figure 8.
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF; See Figure 7 and
Figure 12.
RLDIFF = 54 Ω, CL1 = CL2 = 100 pF; See Figure 7 and
Figure 12.
See Figure 9 and Figure 14.
See Figure 9 and Figure 14.
See Figure 9 and Figure 14.
See Figure 9 and Figure 14.
CL = 15 pF; See Figure 10 and Figure 13.
CL = 15 pF; See Figure 10 and Figure 13.
RL = 1 kΩ, CL = 15 pF; See Figure 11 and
Figure 15.
RL = 1 kΩ, CL = 15 pF; See Figure 11 and
Figure 15.
Rev. PrK | Page 3 of 15
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