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參數(shù)資料
| 型號： | LT1332CS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal D-Type Edge-Triggered Flip-Flops With 3-State Outputs 20-SOIC 0 to 70 |
| 中文描述： | TRIPLE LINE TRANSCEIVER, PDSO24 |
| 封裝： | PLASTIC, SOL-24 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 264K |
| 代理商： | LT1332CS |
5
LT1332
TYPICAL PERFOW
Receiver Input Thresholds
vs Supply Voltage
SUPPLY VOLTAGE (V)
2.0
R
3
4
5
3.5
4.5
6.0
LT1332 TPC10
2
1
0
2.5
3.0
4.0
5.0
5.5
V
TH
HIGH
V
TH
LOW
TEMPERATURE (°C)
–50
R
1.5
2.0
2.5
25
75
150
LT1332 TPC11
1.0
0.5
0
–25
0
50
100 125
V
TH
HIGH
V
TH
LOW
V
CC
= 3V
Receiver Input Thresholds
vs Temperature
SUPPLY VOLTAGE (V)
2.0
0
S
0.1
0.2
0.3
0.4
3.0
4.0
5.0
6.0
LT1332 TPC12
0.5
0.6
2.5
3.5
4.5
5.5
RECEIVER
OUTPUT LOW
SINKING 500
μ
A
RECEIVER
OUTPUT LOW
SINKING 250
μ
A
RECEIVER
OUTPUT HIGH
(V
– V
)
SOURCING
Receiver Output Voltage
vs Supply Voltage
PI FUU
V
CC
:
Input Supply Pin. V
CC
can vary from 2V to 6V to
accommodate a wide range of logic levels, yet the system
still responds correctly to RS232 signals. Supply current
drops to 40
μ
A in the SHUTDOWN mode. This pin should
be decoupled with a 0.1
μ
F ceramic capacitor.
GND:
Ground Pins. Pins 13 and 23 (S Package) must both
be grounded for proper operation.
ON/OFF:
Controls the operation mode of the device and
is CMOS compatible. A logic low puts the device in the
SHUTDOWN mode which reduces input supply current
to 40
μ
A and places all of the drivers and four of the
receivers in a high impedance state. A logic high fully
enables the device.
U
V
+
:
Positive Supply Input (RS232 Drivers). V
+
should
be greater than 6.5V and less than 13.2V to assure valid
RS232 output signals. An additional decoupling ca-
pacitor may be required if the V
+
generator is located far
away from the LT1332.
V
–
:
Negative Supply Pin (RS232 Drivers). This pin re-
quires an external capacitor. When the device is powered
from a switching regulator, the filter capacitor should be
selected based on the maximum tolerable ripple for the
specified minimum regulator on time. For some low
frequency Burst Mode
TM
regulators, the filter capacitor
should be relatively large (C
≥
10
μ
F). Low ESR tantalum
Burst Mode
TM
is a trademark of Linear Technology Corporation
Receiver Output Waveforms
LT1332 TPC13
INPUT
5V/DIV
RX OUTPUT
C
L
= 50pF
2V/DIV
Driver Output Waveforms
LT1332 TPC13
INPUT
5V/DIV
DRIVER
OUTPUT
R
= 3k
C
L
= 2500pF
10V/DIV
DRIVER
OUTPUT
R
= 3k
10V/DIV
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