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參數(shù)資料
| 型號： | 514409G |
| 英文描述： | Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits |
| 中文描述： | 集成電路 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 285K |
| 代理商： | 514409G |
5
LT1180A/LT1181A
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
LOAD CAPACITANCE (nF)
0
S
12
16
4.0
LT1180A TPC11
8
4
0
1.0
2.0
3.0
5.0
10
14
6
2
3.5
0.5
1.5
2.5
4.5
+SLEW
–SLEW
LT1180A TPC13
LT1180A TPC12
INPUT
DRIVER OUTPUT
R
L
= 3k
DRIVER OUTPUT
R
= 3k
C
L
= 2500pF
DRIVER 1
OUTPUT
ON/OFF PIN
Shutdown to Driver Outputs
Driver Output Waveforms
10V
5V
GND
GND
–10V
–5V
DRIVER 2
OUTPUT
Slew Rate vs Load Capacitance
Receiver Short-Circuit Current
PI FU
V
CC
:
5V Input Supply Pin. This pin should be decoupled
with a 0.1
μ
F ceramic capacitor close to the package pin.
Insufficient supply bypassing can result in low output
drive levels and erratic charge pump operation.
GND:
Ground Pin.
ON/OFF:
A TTL/CMOS Compatible Operating Mode Con-
trol. A logic low puts the LT1180A in shutdown mode.
Supply current drops to zero and both driver and receiver
outputs assume a high impedance state. A logic high fully
enables the device.
U
V
+
:
Positive Supply Output (RS232 Drivers). V
+
≈
2V
CC
–
1.5V. This pin requires an external charge storage capaci-
tor C
≥
0.1
μ
F, tied to ground or V
CC
. Larger value capaci-
tors may be used to reduce supply ripple. With multiple
transceivers, the V
+
and V
–
pins may be paralleled into
common capacitors.
V
–
:
Negative Supply Output (RS232 Drivers). V
–
≈
–(2V
CC
– 2.5V). This pin requires an external charge storage
capacitor C
≥
0.1
μ
F. Larger value capacitors may be used
to reduce supply ripple. With multiple transceivers, the V
+
and V
–
pins may be paralleled into common capacitors.
TEMPERATURE (
°
C)
–55
0
S
20
50
0
50
75
LT1180A TPC10
10
40
30
–25
25
100
125
RX I
SC–
RX I
SC+
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