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| 型号： | LT1342CSW |
| 厂商： | Linear Technology |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 5VRS232 W/3VLOGIC 28SOIC |
| 标准包装： | 27 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC |
| 包装： | 管件 |
| 其它名称： | LT1342CS |
1
LT1342
5V RS232 Transceiver with
3V Logic Interface
S
FEATURE
The LT
1342 is an advanced low power three-driver, five-
receiver RS232 transceiver. The LT1342 operates from a
5V supply and a 3V logic supply. Receiver outputs can
interface directly to 3V logic circuits. Included on the chip
is a shutdown pin for reducing supply current to near zero.
All receivers and drivers assume high impedance states
during shutdown.
The driver disable function provides additional control of
operating mode. When driver disable is high the charge
pump and drivers turn off. Receivers continue to operate
during driver disable.
New ESD structures on the chip allow the LT1342 to
survive multiple
±10kV strikes, eliminating the need for
costly TransZorbs
on the RS232 line pins.
The LT1342 is fully compliant with all EIA RS232 specifi-
cations and operates in excess of 120kbaud even driving
heavy capacitive loads.
s
ESD Protection Over
±10kV
s
3V Logic Interface
s
Uses Small Capacitors: 0.1
F, 0.2F
s
1
A Supply Current in Shutdown
s
Low Power Driver Disable Operating Mode
s
Pin Compatible with LT1137A
s
120kBaud Operation for RL = 3k, CL = 2500pF
s
250kBaud Operation for RL = 3k, CL = 1000pF
s
CMOS Comparable Low Power: 60mW
s
Operates from a 5V Supply and 3V Logic Supply
s
Easy PC Layout: Flowthrough Architecture
s
Rugged Bipolar Design
s
Outputs Assume a High Impedance State When
Off or Powered Down
s
Absolutely No Latchup
D
U
ESCRIPTIO
, LTC and LT are registered trademarks of Linear Technology Corporation.
TransZorb is a registered trademark of General Instruments, GSI.
s
Notebook Computers
s
Palmtop Computers
U
S
A
O
PPLICATI
Output Waveforms
R
LT1342 TA02
U
A
O
PPLICATI
TYPICAL
RECEIVER
OUTPUT
VL = 3V
CL = 50pF
DRIVER
OUTPUT
RL = 3k
CL = 2500pF
INPUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
5V VCC
DRIVER 1 OUT
RX1 IN
DRIVER 2 OUT
RX2 IN
RX3 IN
RX4 IN
DRIVER 3 OUT
RX5 IN
ON/OFF
3V VL
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
V+
0.1
F
2
× 0.1F
2
× 0.1F
0.1
F
GND
DRIVER DISABLE
TO LINE
TO 3V LOGIC
V –
LT1342 TA01
LT1342
NC
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1342CSW#PBF | 功能描述:IC TXRX 5VRS232 W/3VLOGIC 28SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1342CSW#TR | 功能描述:IC TXRX 5V RS232 3V LOGIC 28SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1342CSW#TRPBF | 功能描述:IC TXRX 5VRS232 W/3VLOGIC 28SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1346 | 制造商:LINER 制造商全称:Linear Technology 功能描述:10Mbps DCE/DTE V.35 Transceiver |
| LT1346ACSW | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
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