ISL4489E_06 Datasheet, PDF (5/12 Pages) Intersil Corporation – ±15kV ESD Protected, 1/8 Unit Load, 5V, Low Power, High Speed and Slew Rate Limited, Full Duplex, RS-485/RS-422 Transceivers

ISL4489E, ISL4491E
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
SWITCHING CHARACTERISTICS (ISL4489E)
Driver Input to Output Delay
t_PLH, t_PHL R_DIFF = 54Ω, C_L = 100pF (Figure 2)
Driver Output Skew
t_SKEW R_DIFF = 54Ω, C_L = 100pF (Figure 2)
Driver Differential Rise or Fall Time t_R, t_F R_DIFF = 54Ω, C_L = 100pF (Figure 2)
Driver Enable to Output High
t_ZH
C_L = 100pF, SW = GND (Figure 3)
Driver Enable to Output Low
t_ZL
C_L = 100pF, SW = V_CC (Figure 3)
Driver Disable from Output High
t_HZ
C_L = 15pF, SW = GND (Figure 3)
Driver Disable from Output Low
t_LZ
C_L = 15pF, SW = V_CC (Figure 3)
Receiver Input to Output Delay
t_PLH, t_PHL Figure 4
Receiver Skew | t_PLH - t_PHL |
t_SKD Figure 4
Receiver Enable to Output High
t_ZH
C_L = 15pF, SW = GND (Figure 5)
Receiver Enable to Output Low
t_ZL
C_L = 15pF, SW = V_CC (Figure 5)
Receiver Disable from Output High
t_HZ
C_L = 15pF, SW = GND (Figure 5)
Receiver Disable from Output Low
t_LZ
C_L = 15pF, SW = V_CC (Figure 5)
Maximum Data Rate
f_MAX
SWITCHING CHARACTERISTICS (ISL4491E)
Full 250 400 2000 ns
Full
-
160 800 ns
Full 250 600 2000 ns
Full 250 1000 2000 ns
Full 250 860 2000 ns
Full 300 660 3000 ns
Full 300 640 3000 ns
Full 250 500 2000 ns
25
-
60
-
ns
Full
-
10
50
ns
Full
-
10
50
ns
Full
-
10
50
ns
Full
-
10
50
ns
Full 250
-
-
kbps
Driver Input to Output Delay
t_PLH, t_PHL R_DIFF = 54Ω, C_L = 100pF (Figure 2)
Driver Output Skew
t_SKEW R_DIFF = 54Ω, C_L = 100pF (Figure 2)
Driver Differential Rise or Fall Time t_R, t_F R_DIFF = 54Ω, C_L = 100pF (Figure 2)
Driver Enable to Output High
t_ZH
C_L = 100pF, SW = GND (Figure 3)
Driver Enable to Output Low
t_ZL
C_L = 100pF, SW = V_CC (Figure 3)
Driver Disable from Output High
t_HZ
C_L = 15pF, SW = GND (Figure 3)
Driver Disable from Output Low
t_LZ
C_L = 15pF, SW = V_CC (Figure 3)
Receiver Input to Output Delay
t_PLH, t_PHL (Figure 4)
Receiver Skew | t_PLH - t_PHL |
t_SKD (Figure 4)
Receiver Enable to Output High
t_ZH
C_L = 15pF, SW = GND (Figure 5)
Receiver Enable to Output Low
t_ZL
C_L = 15pF, SW = V_CC (Figure 5)
Receiver Disable from Output High
t_HZ
C_L = 15pF, SW = GND (Figure 5)
Receiver Disable from Output Low
t_LZ
C_L = 15pF, SW = V_CC (Figure 5)
Maximum Data Rate
f_MAX
ESD PERFORMANCE
RS-485 Pins (A, B, Y, Z)
Human Body Model
Full 13
Full
-
Full
5
Full
-
Full
-
Full
-
Full
-
Full 30
25
-
Full
-
Full
-
Full
-
Full
-
Full 15
24
40
ns
3
10
ns
12
20
ns
14
70
ns
14
70
ns
44
70
ns
21
70
ns
90
150
ns
5
-
ns
9
50
ns
9
50
ns
9
50
ns
9
50
ns
-
-
Mbps
25
-
±15
-
kV
All Other Pins
25
-
>±7
-
kV
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 “1/8 unit load (1/8 UL)” transceivers. The RS-485 standard allows up to 32 Unit Loads on the bus,
so there can be 256 1/8 UL devices on a bus.
5
FN6074.3