LT1342是5V RS232 Transceiver with 3V Logic Interface

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LT1342 - LT1342是5V RS232 Transceiver with 3V Logic Interface

LT1342是Linear公司的一款RS232 / RS562 收发器产品，LT1342是5V RS232 Transceiver with 3V Logic Interface，本站介绍了LT1342的封装应用图解、特点和优点、功能等，并给出了与LT1342相关的凌力尔特元器件型号供参考。

LT1342 - 5V RS232 Transceiver with 3V Logic Interface

LT1342 - 5V RS232 Transceiver with 3V Logic Interface - Linear Technology（凌力尔特）

功能描述

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 specifications and operates in excess of 120kbaud even driving heavy capacitive loads.

特点

ESD Protection Over ±10kV

3V Logic Interface

Uses Small Capacitors: 0.1µF, 0.2µF

1µA Supply Current in Shutdown

Low Power Driver Disable Operating Mode

Pin Compatible with LT1137A

120kBaud Operation for RL = 3k, CL = 2500pF

250kBaud Operation for RL = 3k, CL = 1000pF

CMOS Comparable Low Power: 60mW

Easy PC Layout: Flowthrough Architecture

Rugged Bipolar Design

Outputs Assume a High Impedance State When Off or Powered Down

Absolutely No Latch-Up

应用

Notebook Computers

Palmtop Computers

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT1342CG	SSOP-28	C	$5.17	$4.10
LT1342CG#PBF	SSOP-28	C	$5.17	$4.10
LT1342CG#TR	SSOP-28	C		$4.20
LT1342CG#TRPBF	SSOP-28	C		$4.20
LT1342CNW	NW-28	C	$4.75	$3.75
LT1342CNW#PBF	NW-28	C	$4.75	$3.75
LT1342CSW	SW-28	C	$4.75	$3.75
LT1342CSW#PBF	SW-28	C	$4.75	$3.75
LT1342CSW#TR	SW-28	C		$3.85
LT1342CSW#TRPBF	SW-28	C		$3.85