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ISL32485E Fiches technique(PDF) 7 Page - Intersil Corporation

No de pièce ISL32485E
Description  Fault Protected, Extended CMR, RS-485/RS-422 Transceivers
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Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL32485E Fiches technique(HTML) 7 Page - Intersil Corporation

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ISL32483E, ISL32485E
7
FN7785.0
January 18, 2011
Driver Disable from Output
High
tHZ
SW = GND (Figure 5)
Full
-
-
120
ns
Time to Shutdown
tSHDN
(Notes 11, 16)
Full
60
160
600
ns
Driver Enable from Shutdown
to Output High
tZH(SHDN) SW = GND (Figure 5),
(Notes 11, 12, 16)
Full
-
-
2000
ns
Driver Enable from Shutdown
to Output Low
tZL(SHDN) SW = VCC (Figure 5),
(Notes 11, 12, 16)
Full
-
-
2000
ns
RECEIVER SWITCHING CHARACTERISTICS
Maximum Data Rate
fMAX
-25V ≤ VCM ≤ 25V (Figure 7)
Full
1
15
-
Mbps
Receiver Input to Output Delay
tPLH, tPHL -25V ≤ VCM ≤ 25V (Figure 7)
Full
-
90
150
ns
Receiver Skew | tPLH - tPHL |tSKD
(Figure 7)
Full
-
4
10
ns
Receiver Enable to Output
Low
tZL
RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8),
(Notes 10, 16)
Full
-
-
50
ns
Receiver Enable to Output
High
tZH
RL = 1kΩ, CL = 15pF, SW = GND (Figure 8),
(Notes 10, 16)
Full
-
-
50
ns
Receiver Disable from Output
Low
tLZ
RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8)
(Note 16)
Full
-
-
50
ns
Receiver Disable from Output
High
tHZ
RL = 1kΩ, CL = 15pF, SW = GND (Figure 8)
(Note 16)
Full
-
-
50
ns
Time to Shutdown
tSHDN
(Notes 11, 16)
Full
60
160
600
ns
Receiver Enable from
Shutdown to Output High
tZH(SHDN) RL = 1kΩ, CL = 15pF, SW = GND (Figure 8),
(Notes 11, 13, 16)
Full
-
-
2000
ns
Receiver Enable from
Shutdown to Output Low
tZL(SHDN) RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8),
(Notes 11, 13, 16)
Full
-
-
2000
ns
NOTES:
6. 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.
7. Supply current specification is valid for loaded drivers when DE = 0V.
8. Applies to peak current. See “Typical Performance Curves” beginning on page 18 for more information
9. Keep RE = 0 to prevent the device from entering SHDN.
10. The RE signal high time must be short enough (typically <100ns) to prevent the device from entering SHDN.
11. Transceivers (except on the ISL32485E) are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 60ns, the
parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See
“Low Power Shutdown Mode” on page 12.
12. Keep RE = VCC, and set the DE signal low time >600ns to ensure that the device enters SHDN.
13. Set the RE signal high time >600ns to ensure that the device enters SHDN.
14. Compliance to data sheet limits is assured by one or more methods: production test, characterization and/or design.
15. Tested according to TIA/EIA-485-A, Section 4.2.6 (±80V for 15ms at a 1% duty cycle).
16. Does not apply to the ISL32485E. The ISL32485E has no Rx enable function, and thus no SHDN function.
17. See “Caution” statement in the “Recommended Operating Conditions” section on page 5.
Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = +25°C (Note 6).
Boldface limits apply over the operating temperature range, -40°C to +85°C.
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
(Note 14)
TYP
MAX
(Note 14)
UNITS


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