ISL4486 Datasheet, PDF (4/11 Pages) Intersil Corporation – 5V, Ultra High Speed, PROFIBUS, RS-485/RS-422 Transceivers

ISL4486, ISL81486
Electrical Specifications
Test Conditions: V_CC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V_CC = 5V, T_A = 25°C,
Note 2 (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C) MIN
TYP MAX UNITS
Driver Short-Circuit Current,
V_O = High or Low
Receiver Short-Circuit Current
SWITCHING CHARACTERISTICS
I_OSD1
I_OSR
DE = V_CC, -7V ≤ V_Y or V_Z ≤ 12V (Note 4)
0V ≤ V_O ≤ V_CC
Full 60
Full
7
-
250 mA
-
85
mA
Driver Input to Output Prop Delay
t_PLH, t_PHL R_DIFF = 54Ω,
C_L = 100pF (Figure 2)
ISL4486
ISL81486
Full
3
Full
3
9
14
ns
9
17
ns
Prop Delay Delta, Min-to-Max
t_DP-PSKEW R_DIFF = 54Ω, C_L = 100pF, ISL4486 Only (Note 6, Full
-
0
6
ns
Figure 2)
Driver Prop Delay Skew
Driver Differential Rise or Fall Time
t_SKEW
t_R, t_F
R_DIFF = 54Ω, C_L = 100pF (Figure 2)
R_DIFF = 54Ω,
C_L = 100pF (Figure 2)
ISL4486
ISL81486
Full
-
Full
-
Full
-
0
2
ns
5
8
ns
7
15
ns
Driver Enable to Output High
Driver Enable to Output Low
Matched Enable Switching
|t_AZH - t_BZL| or |t_BZH - t_AZL|
Driver Disable from Output High
Driver Disable from Output Low
Matched Disable Switching
|t_AHZ - t_BLZ| or |t_BHZ - t_ALZ|
Driver Maximum Data Rate
t_ZH
t_ZL
∆ t_EN
C_L = 50pF, SW = GND (Figure 3)
C_L = 50pF, SW = V_CC (Figure 3)
At Identical Test Conditions (Figure 3)
t_HZ
t_LZ
∆t_DIS
C_L = 50pF, SW = GND (Figure 3)
C_L = 50pF, SW = V_CC (Figure 3)
At Identical Test Conditions (Figure 3)
f_MAXD
|V_OD| ≥ 1.5V (Figure 4) ISL4486
ISL81486
Full
-
Full
-
Full
-
9
15
ns
9
15
ns
1
3
ns
Full
-
Full
-
Full
-
9
15
ns
9
15
ns
2
5
ns
Full 40
-
Full 30
-
-
Mbps
-
Mbps
Receiver Input to Output Prop
Delay
t_PLH, t_PHL (Figure 5)
ISL4486
ISL81486
Full 11
17
25
ns
Full
6
17
25
ns
Prop Delay Delta, Min-to-Max
t_RP-PSKEW ISL4486 Only (Note 6, Figure 5)
Full
-
0
9
ns
Receiver Prop Delay Skew
| t_PLH - t_PHL |
t_SKD Figure 5
Full
-
0.5
3
ns
Receiver Enable to Output High
t_ZH
C_L = 15pF, SW = GND (Figure 6)
Full
-
7
13
ns
Receiver Enable to Output Low
t_ZL
C_L = 15pF, SW = V_CC (Figure 6)
Full
-
7
13
ns
Receiver Disable from Output High
t_HZ
C_L = 15pF, SW = GND (Figure 6)
Full
-
7
13
ns
Receiver Disable from Output Low
t_LZ
C_L = 15pF, SW = V_CC (Figure 6)
Full
-
7
13
ns
Receiver Maximum Data Rate
f_MAXR C_L = 15pF, V_ID ≥ 1.5V, RO t_H and t_L ≥ 20ns
Full 40
-
-
Mbps
NOTES:
2. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless
otherwise specified.
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 “0.6 unit load (UL)” transceivers. The RS-485 standard allows up to 32 Unit Loads on the bus, so
a 0.6UL transceiver permits > 50 devices on the bus.
6. This is the part-to-part skew between any two units tested with identical test conditions (Temperature, V_CC, etc.).
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