LT1180AISW Linear Technology, LT1180AISW Datasheet

IC DRVR/RCVR RS232 5V DUAL18SOIC

LT1180AISW

Manufacturer Part Number
LT1180AISW
Description
IC DRVR/RCVR RS232 5V DUAL18SOIC
Manufacturer
Linear Technology
Type
Transceiverr
Datasheet

Specifications of LT1180AISW

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
18-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1180AISW
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT1180AISWTRPBF
Manufacturer:
NXP
Quantity:
3 541
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
OUTPUTS
ESD Protection over 10kV
Uses Small Capacitors: 0.1 F
120kBaud Operation for R
250kBaud Operation for R
Outputs Withstand 30V Without Damage
CMOS Comparable Low Power: 40mW
Operates from a Single 5V Supply
Rugged Bipolar Design
Outputs Assume a High Impedance State When Off
or Powered Down
Meets All RS232 Specifications
Available With or Without Shutdown
Absolutely No Latch-up
Available in SO Package
Portable Computers
Battery-Powered Systems
Power Supply Generator
Terminals
Modems
INPUTS
LOGIC
LOGIC
ON/OFF
0.1 F
0.1 F
+
+
12
11
13
10
18
2
4
5
6
U
LT1180A
5k
5k
L
L
17
3
7
15
8
14
9
16
= 3k, C
= 3k, C
+
+
U
0.1 F
0.1 F
L
L
= 2500pF
= 1000pF
5V INPUT
V
V
RS232 OUTPUT
RS232 OUTPUT
RS232 INPUT
RS232 INPUT
+
OUT
OUT
LT1180A • TA01
DESCRIPTIO
The LT
pairs with integral charge pump to generate RS232 volt-
age levels from a single 5V supply. These circuits feature
rugged bipolar design to provide operating fault tolerance
and ESD protection unmatched by competing CMOS
designs. Using only 0.1 F external capacitors, these cir-
cuits consume only 40mW of power, and can operate to
120k baud even while driving heavy capacitive loads. New
ESD structures on the chip allow the LT1180A/LT1181A to
survive multiple 10kV strikes, eliminating the need for
costly TransZorbs
LT1181A 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 LT1181A is available in 16-pin DIP and SO packages.
The LT1180A is supplied in 18-pin DIP and SO packages
for applications which require shutdown.
TransZorb is a registered trademark of General Instruments, GSI
, LTC and LT are registered trademarks of Linear Technology Corporation.
C
L
RECEIVER
R
C
= 2500pF
OUTPUT
OUTPUT
L
DRIVER
R
= 50pF
INPUT
L
®
= 3k
1180A/LT1181A are dual RS232 driver/receiver
Dual Driver/Receiver with
®
Low Power 5V RS232
U
on the RS232 line pins. The LT1180A/
Output Waveforms
LT1180A/LT1181A
0.1 F Capacitors
LT1180A • TA02
11801afb
1

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LT1180AISW Summary of contents

Page 1

... The LT1181A is available in 16-pin DIP and SO packages. The LT1180A is supplied in 18-pin DIP and SO packages for applications which require shutdown. , LTC and LT are registered trademarks of Linear Technology Corporation. TransZorb is a registered trademark of General Instruments, GSI 5V INPUT + V OUT 0 ...

Page 2

... W U ORDER PART NUMBER + LT1180ACN – LT1180ACSW + 4 C2 – LT1180AIN 5 C2 – LT1180AISW TR2 OUT 8 REC2 IN N PACKAGE 16-LEAD PDIP T = 125 C, JMAX T = 125 C, JMAX LT1180AMJ T = 150 C, JMAX The denotes specifications which apply over the operating temperature 85 C for industrial grade. (Note 2) A ...

Page 3

ELECTRICAL C HARA TERISTICS C range ( for commercial grade, and – PARAMETER CONDITIONS ON/OFF Pin Current 0V V Oscillator Frequency Driver Output Voltage Swing Load = 3k to GND Logic Input ...

Page 4

LT1180A/LT1181A W U TYPICAL PERFOR A Driver Maximum Output Voltage vs Load Capacitance 8.0 7.5 7.0 20kBAUD 6.5 60kBAUD 6.0 120kBAUD 5.5 5 LOAD CAPACITANCE (nF) LT1180A • TPC01 ...

Page 5

W U TYPICAL PERFOR A Receiver Short-Circuit Current –55 – TEMPERATURE ( C) Shutdown to Driver Outputs 10V DRIVER 1 5V OUTPUT GND GND ...

Page 6

LT1180A/LT1181A CTIO S TR1 IN, TR2 IN: RS232 Driver Input Pins. These inputs are TTL/CMOS compatible. Inputs should not be allowed to float. Tie unused inputs TR1 OUT, TR2 OUT: Driver ...

Page 7

O U TYPICAL A PPLICATI SHUTDOWN 18 ON/OFF LT1180A 11 TTL INPUT 12 TTL INPUT 13 TTL OUTPUT 10 TTL OUTPUT – – C2 GND ...

Page 8

LT1180A/LT1181A PACKAGE DESCRIPTIO CORNER LEADS OPTION (4 PLCS) 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.300 BSC (0.762 BSC) 0.008 – 0.018 0 – 15 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE ...

Page 9

PACKAGE DESCRIPTIO 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) 0.300 ...

Page 10

LT1180A/LT1181A PACKAGE DESCRIPTIO 0.291 – 0.299** (7.391 – 7.595) 0.010 – 0.029 (0.254 – 0.737) 0.009 – 0.013 NOTE 1 (0.229 – 0.330) 0.016 – 0.050 (0.406 – 1.270) NOTE: 1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON ...

Page 11

... DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... Pin Compatible with LT1180A/LT1181A, I Narrow 16-Pin SO Package IEC 1000-4-2 Level 4 Compliance www.linear.com 5V INPUT –12V OUT 0.1 F RS232 OUTPUT RS232 OUTPUT RS232 INPUT RS232 INPUT LT1180A • TA03 = 10mA Max CC LT/CPI 11/01 REV B 1.5K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1994 11801afb ...

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