參數資料
型號： LT1331CNW
廠商： LINEAR TECHNOLOGY CORP
元件分類： 通用總線功能
英文描述： 3V RS562 or 5V/3V RS232 Transceiver with One Receiver Active in Shutdown
中文描述： TRIPLE LINE TRANSCEIVER, PDIP28
封裝： 0.600 INCH, PLASTIC, DIP-28
文件頁數： 6/8頁
文件大小： 245K
代理商： LT1331CNW
6
LT1331
U
S
A
Power Saving Operational Modes
The LT1331 has both shutdown and driver disable oper-
ating modes. These operating modes can optimize power
consumption based upon applications needs.
The shutdown control turns off all circuitry except for
Low-Q RX5. RX5 operates entirely from the V
L
power
supply, so the power consumption from V
CC
drops to
zero. The V
CC
power supply may be turned off while in
shutdwon, which may allow greater power savings in
some systems. When RX5 detects a signal, this informa-
tion can be used to wake up the system for full operation.
If more than one line must be monitored, the driver
disable mode provides a power efficient operating
option. The driver disable mode turns off the charge
pumps and RS232 drivers, but keeps all five receivers
active. Power consumption in driver disable mode is 3mA
from V
L
and less than 100
μ
A from V
CC
.
O
PPLICATI
U
U
Mixed 5V/3V Operation
When operated with V
CC
= 5V and V
L
= 3.3V supplies, the
RS232 drivers meet or exceed all RS232 or V.28 commu-
nication interface standards. Data rates up to 120kbaud
are supported, and all standard RS232 compatible mice
may be driven by the LT1331.
3V Operation
V
CC
= 3.3V operation of the LT1331 results in lower driver
output swing than with V
CC
= 5V. The driver output swing,
when operated with V
CC
= 3.3V, is guaranteed to be at
least –2.7V to 3.7V, with typical swing being –3.3V to 4V.
This insures compatibility with all commonly used RS232
and RS562 interface circuits. Table 1 summarizes the
receiver input threshold specifications for RS232 circuits
from many manufacturers.
Table 1. Commonly Used RS232 Interface Circuit Receiver Thresholds
INPUT LOW THRESHOLD
MIN
TYP
0.8
0.8
0.8
0.8
INPUT HIGH THRESHOLD
MIN
TYP
–
–
–
–
MANUFACTURER
Linear Technology
PART NUMBER
LT1080
LT1137A
LT1330
LT1281
All Others
SN75189
SN75189A
MAX232
SN75C185
MAX232A
MAX241
SP232
SP301
MC1489
MC1489A
DS1489
DS14C89A
COMPATIBLE
MAX
–
–
–
–
MAX
2.4
2.4
2.4
2.4
1.3
1.3
1.3
1.3
1.7
1.7
1.7
1.7
Texas Instruments
0.65
0.65
0.8
0.65
0.8
0.6
0.8
0.75
0.75
0.75
0.75
0.5
1.0
1.0
1.2
1.0
1.3
1.2
1.2
–
–
0.8
1.0
–
1.25
1.25
–
1.25
–
–
–
1.35
1.25
1.25
1.25
1.9
0.9
1.55
–
1.6
–
–
–
1.75
1.0
1.75
1.0
1.3
1.3
1.9
1.7
2.1
1.8
1.5
1.7
–
–
1.95
1.25
–
1.6
2.25
2.4
2.55
2.4
2.4
2.4
2.5
1.5
2.25
1.5
2.7
Maxim
Sipex
Motorola
National
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相關代理商/技術參數
參數描述
LT1331CNW#PBF 功能描述:IC TXRX 5V/3V RS232 28-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:1,140 系列:AU 類型:收發(fā)器 驅動器/接收器數:1/1 規(guī)程:CAN 電源電壓:5.3 V ~ 27 V 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SO 包裝:管件 其它名稱:935267940512AU5790D14AU5790D14-ND
LT1331CS 制造商:Linear Technology 功能描述:LINE TRANSCEIVER, PDSO28
LT1331CSW 功能描述:IC TXRX 5V/3V RS232 28-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅動器/接收器數:3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件
LT1331CSW#PBF 功能描述:IC TXRX 5V/3V RS232 28-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅動器/接收器數:3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件
LT1331CSW#TR 功能描述:IC TXRX 5V/3V RS232 SHDWN 28SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅動器/接收器數:3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件
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