參數(shù)資料
型號(hào)： LT1781CSW
廠商： LINEAR TECHNOLOGY CORP
元件分類： 通用總線功能
英文描述： Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????)
中文描述： LINE TRANSCEIVER, PDSO16
封裝： PLASTIC, SO-16
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 276K
代理商： LT1781CSW
1
LT1780/LT1781
Low Power 5V RS232
Dual Driver/Receiver with
±
15kV ESD Protection
D
U
ESCRIPTIO
The LT
1780/LT1781 are dual RS232 driver/receiver pairs
with integral charge pump to generate RS232 voltage
levels from a single 5V supply. Using only 0.1
μ
F external
capacitors, these circuits consume only 40mW of power,
and can operate to 120kbaud even while driving heavy
capacitive loads. New ESD structures on the chip allow the
LT1780/LT1781 to survive
±
15kV air gap and
±
8kV con-
tact ESD tests per IEC 1000-4-2, eliminating the need for
costly TransZorbs
on the RS232 line pins. The LT1780/
LT1781 are fully compliant with EIA RS232 standards.
Driver outputs are protected from overload, and can be
shorted to ground or up to
±
30V without damage. During
SHUTDOWN or power-off conditions, driver and receiver
outputs are in a high impedance state, allowing line
sharing.
The LT1780/LT1781 are direct upgrades to the LT1180A/
LT1181A, LT1280A/LT1281A and LT1381 for applications
which require the utmost ESD protection.
The LT1781 is available in 16-pin DIP,SO and SW pack-
ages. The LT1780 is supplied in 18-pin DIP and SW
packages for applications which require SHUTDOWN.
TransZorb is a registered trademark of General Instruments, GSI.
R
C
L
= 50pF
Output Waveforms
1780/81 TA02
DRIVER
OUTPUT
R
= 3k
C
L
= 2500pF
RECEIVER
OUTPUT
INPUT
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
LOGIC
INPUTS
LOGIC
OUTPUTS
ON/OFF
18
10
13
11
12
6
5
4
2
16
9
14
8
15
7
3
17
5V INPUT
V
+
OUT
V
–
OUT
RS232 OUTPUT
RS232 OUTPUT
RS232 INPUT
RS232 INPUT
1780/81 TA01
5k
5k
LT1780
U
A
O
PPLICATI
TYPICAL
S
FEATURE
I
10mA Max Supply Current
I
ESD Protection to IEC 1000-4-2 Level 4
±
15kV Air Gap,
±
8kV Contact
I
Uses Small Capacitors: 0.1
μ
F
I
120kBaud Operation for R
L
= 3k, C
L
= 2500pF
I
250kBaud Operation for R
L
= 3k, C
L
= 1000pF
I
Outputs Withstand
±
30V Without Damage
I
CMOS Comparable Low Power: 40mW
I
Operates from a Single 5V Supply
I
Rugged Bipolar Design
I
Outputs Assume a High Impedance State When Off
or Powered Down
I
Meets All RS232 Specifications
I
Available With or Without Shutdown
I
Absolutely No Latch-up
I
Portable Computers
I
Battery-Powered Systems
I
Power Supply Generator
I
Terminals
I
Modems
U
S
A
O
PPLICATI
, LTC and LT are registered trademarks of Linear Technology Corporation.
相關(guān)PDF資料
PDF描述
LT1782CS5 Micropower, Over-The-Top SOT-23, Rail-to-Rail Input and Output Op Amp
LT1782CS6 Micropower, Over-The-Top SOT-23, Rail-to-Rail Input and Output Op Amp
LT1782 Micropower, SOT-23, Rail-to-Rail Input and Output Op Amp(微功耗SOT-23封裝,單路，滿幅度輸入和輸出運(yùn)算放大器)
LT1783 1.25MHz, Micropower, Rail-to-Rail Input and Output Op Amp in SOT-23(1.25MHz,微功耗,SOT-23封裝,單路，滿幅度輸入和輸出運(yùn)算放大器)
LT1784 2.5MHz, Over-The-Top Low Power, Rail-to-Rail Input and Output Op Amp in SOT-23(2.5MHz,低功耗,SOT-23封裝,單路，滿幅度輸入和輸出運(yùn)算放大器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1781CSW#PBF 功能描述:IC DVR/RCVR 5V RS232 DUAL 16SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
LT1781CSW#TR 功能描述:IC TXRX 5V RS232 DUAL LP 16SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
LT1781CSW#TRPBF 功能描述:IC DVR/RCVR 5V RS232 DUAL 16SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
LT1781IN 功能描述:IC DVR/RCVR 5V RS232 DUAL 16-DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
LT1781IN#PBF 功能描述:IC DVR/RCVR 5V RS232 DUAL 16-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
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