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ISL32478EIBZ 数据表(PDF) 9 Page - Intersil Corporation

部件名 ISL32478EIBZ
功能描述  Fault Protected, Extended Common Mode Range, RS-485/RS-422 Transceivers
Download  19 Pages
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

ISL32478EIBZ 数据表(HTML) 9 Page - Intersil Corporation

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ISL32470E, ISL32472E, ISL32475E, ISL32478E
9
FN7784.0
January 21, 2011
Time to Shutdown
tSHDN
(Note 11)
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)
Full
-
-
2000
ns
Receiver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 1kΩ, CL = 15pF, SW = VCC (Figure 8),
(Notes 11, 13)
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 13 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 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.
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 15µs at a 1% duty cycle).
16. See “Caution” statement below the “Recommended Operating Conditions” section on page 5.
Test Circuits and Waveforms
FIGURE 3A. VOD AND VOC
FIGURE 3B. VOD AND VOC WITH COMMON MODE LOAD
FIGURE 3. DC DRIVER TEST CIRCUITS
Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are 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
D
DE
DI
VCC
VOD
VOC
RL/2
RL/2
Z
Y
D
DE
DI
VCC
VOD
375Ω
375Ω
Z
Y
VCM
RL/2
RL/2
VOC


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