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10
FN6361.0
May 20, 2008
Driver Enable to Output Low
tZL
CL = 100pF, SW = VCC (Figure 3) Full
-
42
100
ns
Driver Enable to Output High
tZH
CL = 100pF, SW = GND (Figure 3) Full
-
350
450
ns
Driver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 3) Full
-
30
60
ns
Driver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 3) Full
-
25
60
ns
Driver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC
Full
-
500
ns
Driver Enable from Shutdown to
Output High
tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND
Full
-
750
ns
Driver Maximum Data Rate
fMAX
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
460
2000
-
kbps
RS-485 DRIVER SWITCHING CHARACTERISTICS (SLOW DATA RATE (115kbps, QFN ONLY), 485/232 = VCC, SLEW = SPB = GND)
Driver Differential Input to Output
Delay
tDLH, tDHL RDIFF = 54Ω, CL = 100pF (Figure 2) Full
800
1600
2500
ns
Driver Output Skew
tSKEW
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
-
250
500
ns
Driver Differential Rise or Fall Time
tR, tF
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
1000
1700
3100
ns
Driver Enable to Output Low
tZL
CL = 100pF, SW = VCC (Figure 3) Full
-
45
100
ns
Driver Enable to Output High
tZH
CL = 100pF, SW = GND (Figure 3) Full
-
910
1200
ns
Driver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 3) Full
-
35
60
ns
Driver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 3) Full
-
29
60
ns
Driver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 500Ω, CL = 100pF, SW = VCC
Full
-
800
ns
Driver Enable from Shutdown to
Output High
tZH(SHDN) RL = 500Ω, CL = 100pF, SW = GND
Full
-
1500
ns
Driver Maximum Data Rate
fMAX
RDIFF = 54Ω, CL = 100pF (Figure 2) Full
115
800
-
kbps
RS-485 RECEIVER SWITCHING CHARACTERISTICS (485/232 = VCC, ALL VERSIONS AND SPEEDS)
Receiver Input to Output Delay
Full
20
45
70
ns
Receiver Skew | tPLH - tPHL |tSKEW
Full
-
3
10
ns
Receiver Maximum Data Rate
fMAX
Full
20
40
-
Mbps
Receiver Enable to Output Low
tZL
CL = 15pF, SW = VCC (Figure 5) Full
-
15
60
ns
Receiver Enable to Output High
tZH
CL = 15pF, SW = GND (Figure 5) Full
-
15
60
ns
Receiver Disable from Output Low
tLZ
CL = 15pF, SW = VCC (Figure 5) Full
-
20
60
ns
Receiver Disable from Output High
tHZ
CL = 15pF, SW = GND (Figure 5) Full
-
20
60
ns
Receiver Enable from Shutdown to
Output Low
tZLSHDN CL = 15pF, SW = VCC (Figure 5, Note 14) Full
-
500
900
ns
Receiver Enable from Shutdown to
Output High
tZHSHDN CL = 15pF, SW = GND (Figure 5, Note 14) Full
-
500
900
ns
NOTES:
9. 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.
10. Supply current specification is valid for loaded drivers when DEN = 0V.
11. Applies to peak current. See “Typical Performance Curves” beginning on
page 19 for more information.
12. RIN defaults to RS-485 mode (>15kΩ) when the device is unpowered (VCC = 0V), or in SHDN, regardless of the state of the 485/232 pin.
13. The Slew pin has a pull-up resistor that enables only when in RS-485 mode (485/232 = VCC).
14. ON, RXEN, and DEN all simultaneously switched Low-to-High.
15. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Electrical Specifications
Test Conditions: VCC = 3.15V to 3.45V, C1 to C4 = 0.1F, VL = VCC (for QFN only), Unless Otherwise Specified.
Typicals are at VCC = 3.3V, TA = +25°C (Note 9) (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
(Note 15)
TYP
MAX
(Note 15) UNITS
ISL3330, ISL3331