IL3585
Driver Section
Electrical Specifications are Tmin to Tmax unless otherwise stated.
Parameters
Symbol
Min.
Typ.(5)
Max.
Units
Test Conditions
Input Clamp Voltage
V
IK
-1.5
V
I
L = -18 mA
Output voltage
V
O
V
DD
V
I
O = 0
Differential Output Voltage(2)
|V
OD
1|
V
DD
V
I
O = 0
Differential Output Voltage(2)
|V
OD
2|
2.5
3
5
V
R
L = 54 Ω, VDD = 5 V
Differential Output Voltage(2)(6)
V
OD
3
2.3
5
V
R
L = 54 Ω, VDD = 4.5 V
Change in Magnitude of Differential
Output Voltage(7)
∆|V
OD|
±0.2
V
R
L = 54 Ω or 100 Ω
Common Mode Output Voltage
V
OC
3
V
R
L = 54 Ω or 100 Ω
Change in Magnitude of Common
Mode Output Voltage(7)
∆|V
OC|
±0.2
V
R
L = 54 Ω or 100 Ω
Output Current(4)
I
O
1
-0.8
mA
Output Disabled
, V
O = 12
V
O = -7
High Level Input Current
I
IH
10
µA
V1 = 3.5 V
Low Level Input Current
I
IL
-10
µA
V1 = 0.4 V
Absolute |Short-circuit Output Current|
I
OS
60
250
µA
-7 V> V
O <12 V
Supply Current
(V
DD
2 = +5 V)
(V
DD
1 = +5 V)
(V
DD
1 = +3.3 V)
I
DD
2
I
DD
1
I
DD
1
5
4
3
8
6
4
mA
No Load
(Outputs Enabled)
Switching Specifications
Parameters
Symbol
Min.
Typ.(5)
Max.
Units
Test Conditions
Maximum Data Rate
40
Mbps
R
L = 54 Ω, CL = 50 pF
Differential Output Prop Delay
t
D(OD)
20
30
ns
R
L = 54 Ω, CL = 50 pF
Pulse Skew(10)
t
S(P)
1
6
ns
R
L = 54 Ω, CL = 50 pF
Differential Output Rise & Fall Time
t
T(OD)
5
8
ns
R
L = 54 Ω, CL = 50 pF
Output Enable Time To High Level
t
PZH
20
30
ns
R
L = 54 Ω, CL = 50 pF
Output Enable Time To Low Level
t
PZL
20
30
ns
R
L = 54 Ω, CL = 50 pF
Output Disable Time From High Level
t
PHZ
20
30
ns
R
L = 54 Ω, CL = 50 pF
Output Disable Time From Low Level
t
PLZ
20
30
ns
R
L = 54 Ω, CL = 50 pF
Skew Limit(3)
t
SK(LIM)
2
12
ns
R
L = 54 Ω, CL = 50 pF
Notes: These apply to both driver and receiver sections
1.
All Voltage values are with respect to network ground except differential I/O bus voltages.
2.
Differential input/output voltage is measured at the noninverting terminal A with respect to the inverting terminal B.
3.
Skew limit is the maximum propagation delay difference between any two devices at 25°C.
4.
The power-off measurement in ANSI Standard EIA/TIA-422-B applies to disabled outputs only and is not applied to combined inputs and
outputs.
5.
All typical values are at V
DD
1,VDD2 = 5 V or VDD1= 3.3 V and TA = 25°C.
6.
While –7 V<V
CM>12 V, the minimum VOD
2 with a 54 Ω load is either ½ VOD1 or 2.3 V, whichever is greater.
7.
∆|V
OD| and ∆ |VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed form one logic state to
the other.
8.
This applies for both power on and power off, refer to ANSI standard RS-485 for exact condition. The EIA/TIA-422-B limit does not apply
for a combined driver and receiver terminal.
9.
Includes 10 ns read enable time. Maximum propagation delay is 25 ns after read assertion.
10. Pulse skew is defined as the |t
PLH –tPHL| of each channel.
11. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guarantee
performance.
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