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ISL32457EIBZ Datasheet(PDF) 9 Page - Intersil Corporation

No. de pieza ISL32457EIBZ
Descripción Electrónicos  짹60V Fault Protected, 3.3V to 5V, 짹20V Common Mode Range, RS-485/RS-422 Transceivers with Cable Invert and 짹15kV ESD
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Fabricante Electrónico  INTERSIL [Intersil Corporation]
Página de inicio  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL32457EIBZ Datasheet(HTML) 9 Page - Intersil Corporation

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ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E
9
FN7921.0
February 20, 2012
Receiver Skew |tPLH - tPHL|tSKD
(Figure 7)
Full
-
4
20
ns
Receiver Enable to Output Low
tZL
RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8),
(Note 13)
Full
-
-
80
ns
Receiver Enable to Output High
tZH
RL = 1kΩ, CL = 15pF, SW = GND (Figure 8),
(Note 13)
Full
-
-
80
ns
Receiver Disable from Output Low
tLZ
RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8)
Full
-
-
80
ns
Receiver Disable from Output High
tHZ
RL = 1kΩ, CL = 15pF, SW = GND (Figure 8)
Full
-
-
80
ns
Time to Shutdown
tSHDN
(Note 14)
Full
60
160
600
ns
Receiver Enable from Shutdown to
Output High
tZH(SHDN) RL = 1kΩ, CL = 15pF, SW = GND (Figure 8),
(Notes 14, 16)
Full
-
-
2500
ns
Receiver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8),
(Notes 14, 16)
Full
-
-
2500
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 DE = 0V.
11. Applies to peak current. See “Typical Performance Curves” beginning on page 14 for more information.
12. Keep RE = 0 to prevent the device from entering SHDN (does not apply to the ISL32457E).
13. The RE signal high time must be short enough (typically <100ns) to prevent the device from entering SHDN.
14. Transceivers 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 13.
15. Keep RE = VCC, and set the DE signal low time >600ns to ensure that the device enters SHDN.
16. Set the RE signal high time >600ns to ensure that the device enters SHDN.
17. Compliance to data sheet limits is assured by one or more methods: production test, characterization and/or design.
18. See “Caution” statement below the “Recommended Operating Conditions” on page 6.
19. Does not apply to the ISL32457E. The ISL32457E has no Rx enable function, and thus no SHDN function.
Test Circuits and Waveforms
FIGURE 3A. VOD AND VOC
FIGURE 3B. VOD WITH COMMON MODE LOAD
FIGURE 3. DC DRIVER TEST CIRCUITS
Electrical Specifications Test Conditions: VCC = 3V to 3.6V and 4.5V to 5.5V, unless otherwise specified. Typicals are at the worst case of
VCC =5V or VCC =3.3V, TA = +25°C (Note 9). Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
(Note 17)
TYP
MAX
(Note 17)
UNITS
D
DE
DI
VCC
VOD
VOC
RL/2
RL/2
Z
Y
D
DE
DI
VOD
375Ω
375Ω
Z
Y
VCM
VCC
RL/2
RL/2


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