參數(shù)資料
型號： ISL4223E
廠商： Intersil Corporation
英文描述： QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kbps, RS-232 Transmitters/Receivers(QFN 封裝, +/-15kV ESD 防護(hù), +2.7V至+5.5V, 150毫微安, 250kbps, RS-232收發(fā)器)
中文描述： QFN封裝，/ - 15kV的ESD保護(hù)，2.7V至5.5V，150Nanoamp，250kbps的和RS - 232發(fā)送器/接收器封裝（QFN封裝，/ - 15kV的ESD防護(hù)，為2.7V至5.5V的，150毫微安，250kbps的，的RS - 232收發(fā)器）
文件頁數(shù)： 5/13頁
文件大?。?/td> 401K
代理商： ISL4223E
5
Detailed Description
The ISL422XE operate from a single +2.7V to +5.5V supply,
guarantee a 250kBps minimum data rate, require only four
small external 0.1
μ
F capacitors, feature low power
consumption, and meet all ElA RS-232C and V.28
specifications even with V
CC
= 3.0V. The circuit is divided
into three sections: The charge pump, the transmitters, and
the receivers.
Charge-Pump
Intersil’s new ISL422XE devices utilize regulated on-chip
dual charge pumps as voltage doublers, and voltage
inverters to generate
±
5.5V transmitter supplies from a V
CC
supply as low as 3.0V. This allows them to maintain RS-232
compliant output levels over the
±
10% tolerance range of
3.3V powered systems. The efficient on-chip power supplies
require only four small, external 0.1
μ
F capacitors for the
voltage doubler and inverter functions. The charge pumps
operate discontinuously (i.e., they turn off as soon as the V+
RECEIVER INPUTS
Input Voltage Range
25
-25
-
25
V
Input Threshold Low
V
CC
= 3.3V
25
0.6
1.2
-
V
V
CC
= 5.0V
25
0.8
1.5
-
V
Input Threshold High
V
CC
= 3.3V
25
-
1.5
2.4
V
V
CC
= 5.0V
25
-
1.8
2.4
V
Input Hysteresis
25
-
0.5
-
V
Input Resistance
25
3
5
7
k
TRANSMITTER OUTPUTS
Output Voltage Swing
All Transmitter Outputs Loaded with 3k
to Ground
Full
±
5.0
±
5.4
-
V
Output Resistance
V
CC
= V+ = V- = 0V, Transmitter Output =
±
2V
Full
300
10M
-
Output Short-Circuit Current
Full
-
±
35
±
60
mA
Output Leakage Current
V
OUT
=
±
12V, V
CC
= 0V or 3V to 5.5V,
Automatic Powerdown or FORCEOFF = GND
Full
-
-
±
25
μ
A
TIMING CHARACTERISTICS
Maximum Data Rate
R
L
= 3k
,
C
L
= 1000pF, One Transmitter Switching
Full
250
500
-
kBps
Receiver Propagation Delay
Receiver Input to Receiver
Output, C
L
= 150pF
t
PHL
25
-
0.15
-
μ
s
t
PLH
25
-
0.15
-
μ
s
Receiver Output Enable Time
Normal Operation
25
-
200
-
ns
Receiver Output Disable Time
Normal Operation
25
-
200
-
ns
Transmitter Skew
t
PHL
- t
PLH
(Note 2)
25
-
100
-
ns
Receiver Skew
t
PHL
- t
PLH
V
CC
= 3.3V, R
L
= 3k
to 7k
,
Measured From 3V to -3V
or -3V to 3V
25
-
50
-
ns
Transition Region Slew Rate
C
L
= 150pF to 2500pF
25
4
-
30
V/
μ
s
C
L
= 150pF to 1000pF
25
6
-
30
V/
μ
s
ESD PERFORMANCE
RS-232 Pins (T
OUT
, R
IN
)
Human Body Model
25
-
±
15
-
kV
IEC61000-4-2 Contact Discharge
25
-
±
8
-
kV
IEC61000-4-2 Air Gap Discharge
25
-
±
15
-
kV
All Other Pins
Human Body Model
25
-
±
2
-
kV
NOTE:
2. Transmitter skew is measured at the transmitter zero crossing points.
Electrical Specifications
Test Conditions: V
CC
= 3V to 5.5V, C
1
- C
4
= 0.1
μ
F; Unless Otherwise Specified.
Typicals are at T
A
= 25
o
C
(Continued)
PARAMETER
TEST CONDITIONS
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
ISL4221E, ISL4223E
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參數(shù)描述
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