ISL81485IU Intersil, ISL81485IU Datasheet - Page 4

• Manufacturer Part Number: ISL81485IU
• Description: IC TXRX RS485/422 5V HS 8-MSOP
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ISL81485IU

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Test Circuits and Waveforms
Electrical Specifications
NOTES:
Receiver Short-Circuit Current
SWITCHING CHARACTERISTICS
Driver Input to Output Prop Delay
Driver Prop Delay Skew
Driver Differential Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Matched Enable Switching
|t
Driver Disable from Output High
Driver Disable from Output Low
Matched Disable Switching
|t
Driver Maximum Data Rate
Receiver Input to Output Prop
Delay
Receiver Prop Delay Skew
| t
Receiver Enable to Output High
Receiver Enable to Output Low
Receiver Disable from Output High
Receiver Disable from Output Low
Receiver Maximum Data Rate
2. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless
3. Supply current specification is valid for loaded drivers when DE = 0V.
4. Applies to peak current. See “Typical Performance Curves” for more information.
5. Devices meeting these limits are denoted as “1 unit load (UL)” transceivers. The RS-485 standard allows up to 32 Unit Loads on the bus, so a
AZH
AHZ
PLH
otherwise specified.
1UL transceiver permits > 32 devices on the bus.
V
- t
- t
- t
CC
BZL
BLZ
PHL
PARAMETER
| or |t
| or |t
DE
DI
|
BZH
BHZ
FIGURE 1A. V
D
- t
- t
AZL
ALZ
Z
Y
|
|
4
OD
V
Test Conditions: V
Note 2 (Continued)
OD
t
t
SYMBOL
PLH
PLH
AND V
t
f
f
SKEW
t
∆t
MAXD
MAXR
I
∆t
t
R
OSR
SKD
t
t
t
t
t
t
t
t
ZH
HZ
ZH
HZ
ZL
LZ
ZL
LZ
, t
DIS
, t
, t
EN
PHL
PHL
F
OC
R
R
0V ≤ V
R
R
R
C
C
(Figure 3)
C
C
(Figure 3)
|V
(Figure 5)
(Figure 5)
C
C
C
C
C
FIGURE 1. DC DRIVER TEST CIRCUITS
DIFF
DIFF
DIFF
L
L
L
L
L
L
L
L
L
OD
CC
= 50pF, SW = GND (Figure 3)
= 50pF, SW = V
= 50pF, SW = GND (Figure 3)
= 50pF, SW = V
= 15pF, SW = GND (Figure 6)
= 15pF, SW = V
= 15pF, SW = GND (Figure 6)
= 15pF, SW = V
= 15pF, V
V
| ≥ 1.5V (Figure 4)
OC
O
= 54Ω, C
= 54Ω, C
= 54Ω, C
= 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
≤ V
CC
ID
TEST CONDITIONS
ISL81485
L
L
L
≥ 1.5V, RO t
= 100pF (Figure 2)
= 100pF (Figure 2)
= 100pF (Figure 2)
CC
CC
CC
CC
(Figure 3)
(Figure 3)
(Figure 6)
(Figure 6)
H
V
and t
CC
L
DE
DI
FIGURE 1B. V
≥ 20ns
D
Z
Y
TEMP
OD
(
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
o
C)
WITH COMMON MODE LOAD
V
OD
MIN
30
30
7
2
8
-
-
-
-
-
-
-
-
-
-
-
-
-
CC
R
TYP
D
= 5V, T
17
9
1
5
9
9
1
9
9
2
1
7
7
7
7
-
-
-
= 60Ω
A
MAX
= 25
85
15
15
25
25
25
25
30
20
20
20
20
5
3
5
5
-
-
375Ω
375Ω
-7V to +12V
o
C,
UNITS
Mbps
Mbps
mA
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CM