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參數(shù)資料
| 型號： | LT1342 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | OCTAL BUFFER/BUS DRIVERS 20-SOIC 0 to 70 |
| 中文描述： | 5V的RS232收發(fā)器3V邏輯接口 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 245K |
| 代理商： | LT1342 |
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.
I
ESD Protection Over
±
10kV
I
3V Logic Interface
I
Uses Small Capacitors: 0.1
μ
F, 0.2
μ
F
I
1
μ
A Supply Current in Shutdown
I
Low Power Driver Disable Operating Mode
I
Pin Compatible with LT1137A
I
120kBaud Operation for R
L
= 3k, C
L
= 2500pF
I
250kBaud Operation for R
L
= 3k, C
L
= 1000pF
I
CMOS Comparable Low Power: 60mW
I
Operates from a 5V Supply and 3V Logic Supply
I
Easy PC Layout: Flowthrough Architecture
I
Rugged Bipolar Design
I
Outputs Assume a High Impedance State When
Off or Powered Down
I
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.
I
Notebook Computers
I
Palmtop Computers
U
S
A
O
PPLICATI
Output Waveforms
R
LT1342 TA02
U
A
O
PPLICATI
TYPICAL
RECEIVER
OUTPUT
V
= 3V
C
L
= 50pF
DRIVER
OUTPUT
R
= 3k
C
L
= 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 V
CC
DRIVER 1 OUT
RX1 IN
DRIVER 2 OUT
RX2 IN
RX3 IN
RX4 IN
DRIVER 3 OUT
RX5 IN
ON/OFF
3V V
L
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
GND
DRIVER DISABLE
NC
V
+
0.1
μ
F
2
×
0.1
μ
F
2
×
0.1
μ
F
0.1
μ
F
TO LINE
TO 3V LOGIC
V
–
LT1342 TA01
LT1342
相關PDF資料 |
PDF描述 |
|---|---|
| LT1342CG | OCTAL BUFFER/BUS DRIVERS 20-SOIC 0 to 70 |
| LT1342CNW | OCTAL BUFFER/BUS DRIVERS 20-SOIC 0 to 70 |
| LT1342CSW | 5V RS232 Transceiver with 3V Logic Interface |
| LT1353CS | Dual and Quad 250uA, 3MHz, 200V/us Operational Amplifiers |
| LT1352 | Octal Buffers And Line Drivers With 3-State Outputs 20-SSOP 0 to 70 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1342CG | 功能描述:IC TXRX 5V RS232 W/3VLOGC 28SSOP 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(shù):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 |
| LT1342CG#PBF | 功能描述:IC TXRX 5V RS232 W/3VLOGC 28SSOP 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(shù):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 |
| LT1342CG#TR | 功能描述:IC TXRX 5V RS232 3V LOGIC 28SSOP 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(shù):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 |
| LT1342CG#TRPBF | 功能描述:IC TXRX 5V RS232 W/3VLOGC 28SSOP 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(shù):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 |
| LT1342CN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transceiver |
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