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參數(shù)資料
| 型號(hào)： | LT1332CSW#TR |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 LP 12V VPP 24SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 3/5 |
| 規(guī)程： | RS232 |
| 電源電壓： | 2 V ~ 6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC |
| 包裝： | 帶卷 (TR) |
LT1332
5
TYPICAL PERFORMANCE CHARACTERISTICS
Receiver Input Thresholds
vs Supply Voltage
Receiver Input Thresholds
vs Temperature
Receiver Output Voltage
vs Supply Voltage
SUPPLY VOLTAGE (V)
2.0
RECEIVER
INPUT
THRESHOLD
(V)
3
4
5
3.5
4.5
6.0
LT1332 TPC10
2
1
0
2.5 3.0
4.0
5.0 5.5
VTH HIGH
VTH LOW
TEMPERATURE (°C)
–50
RECEIVER
INPUT
THRESHOLD
(V)
1.5
2.0
2.5
25
75
150
LT1332 TPC11
1.0
0.5
0
–250
50
100 125
VTH HIGH
VTH LOW
VCC = 3V
SUPPLY VOLTAGE (V)
2.0
0
SUPPLY
VOLTAGE/RECEIVER
OUTPUT
(V)
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
A
RECEIVER
OUTPUT LOW
SINKING 250
A
RECEIVER
OUTPUT HIGH
(VCC – VOUT)
SOURCING
Receiver Output Waveforms
LT1332 TPC13
INPUT
5V/DIV
RX OUTPUT
CL = 50pF
2V/DIV
Driver Output Waveforms
LT1332 TPC13
INPUT
5V/DIV
DRIVER
OUTPUT
RL = 3k
CL = 2500pF
10V/DIV
DRIVER
OUTPUT
RL = 3k
10V/DIV
PIN FUNCTIONS
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
capacitor may be required if the V+ generator is located
far away from the LT1332.
V–:NegativeSupplyPin(RS232Drivers).Thispinrequires
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 regulators, the filter capacitor should be
relatively large (C ≥ 10F). Low ESR tantalum capacitors
VCC: Input Supply Pin. VCC 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 40A in the SHUTDOWN mode. This pin should
be decoupled with a 0.1F 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 40A and places all of the drivers and four
of the receivers in a high impedance state. A logic high
fully enables the device.
Burst Mode is a trademark of Linear Technology Corporation
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