Datasheet Linear Technology LT1181A

Manufacturer	Linear Technology
Series	LT1181A

Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors

Datasheets

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PDF, 207 Kb, Revision: B, File uploaded: Nov 12, 2017

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Packaging

	LT1181ACN#PBF	LT1181ACSW#PBF	LT1181ACSW#TRPBF	LT1181AIN#PBF	LT1181AISW#PBF	LT1181AISW#TRPBF
N	1	2	3	4	5	6
Package	N-16 Package Outline Drawing	SW-16 Package Outline Drawing	SW-16 Package Outline Drawing	N-16 Package Outline Drawing	SW-16 Package Outline Drawing	SW-16 Package Outline Drawing
Package Code	N	SW	SW	N	SW	SW
Package Index	05-08-1510 (N16)	05-08-1620 (SW16)	05-08-1620 (SW16)	05-08-1510 (N16)	05-08-1620 (SW16)	05-08-1620 (SW16)
Pin Count	16	16	16	16	16	16

Parametrics

Parameters / Models	LT1181ACN#PBF	LT1181ACSW#PBF	LT1181ACSW#TRPBF	LT1181AIN#PBF	LT1181AISW#PBF	LT1181AISW#TRPBF
Driver Disable	no	no	no	no	no	no
Drivers	2	2	2	2	2	2
ESD, kV	10	10	10	10	10	10
Export Control	no	no	no	no	no	no
IEC61000-4-2 Support	yes	yes	yes	yes	yes	yes
Max Data Rate, Mbps	0.25	0.25	0.25	0.25	0.25	0.25
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85
Power, mW	45	45	45	45	45	45
Protocols Supported	RS232	RS232	RS232	RS232	RS232	RS232
Receivers	2	2	2	2	2	2
Shutdown	no	no	no	no	no	no
Supply Voltage Range	5V	5V	5V	5V	5V	5V
Voltage Gen Components	4 x 0.1ВµF	4 x 0.1ВµF	4 x 0.1ВµF	4 x 0.1ВµF	4 x 0.1ВµF	4 x 0.1ВµF

Eco Plan

	LT1181ACN#PBF	LT1181ACSW#PBF	LT1181ACSW#TRPBF	LT1181AIN#PBF	LT1181AISW#PBF	LT1181AISW#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Other Options

LT1180A

Design Notes

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Design Considerations for RS-232 Interfaces &mdash DN27
PDF, 319 Kb, File published: Oct 1, 1989
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Design Considerations for RS232 Interfaces
Design Note 27
Sean Gold Table 1. Key RS232 Transceiver Specifications
(EIA RS232C.V28)
SPECIFICATIONS
Signal Levels
Cable Length
Load Capacitance
Cable Termination
Data Rate
Slew Rate
Fault Conditions VALUE
В±15 Max; В±5 Min
50 Max
2500 Max
3k < R < 7k
20k Max
3 < SR < 30
Drivers Must Tolerate: Conductor to Conductor Shorts Line Open Circuit В±25V Line Overage UNITS
V
Ft
pF
О© …
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RS232 Transceiver with Automatic Power Shutdown Control &mdash DN30
PDF, 122 Kb, File published: Jan 1, 1990
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RS232 Transceiver with Automatic Power Shutdown Control
Design Note 30
Sean Gold
The LTВ®1180/81 RS232 transceivers with on-chip
charge pumps offer some unique features that greatly
enhance serial interface performance. Like the LT1080
and LT1130 series transceivers, the LT1180 is fully
compliant with all RS232 speciп¬Ѓcations. The LT1180 is
unique since it utilizes a charge pump which oscillates
at 150kHz to 200kHz вЂ“ about twice the frequency of the
standard transceivers. In addition to providing excellent
current delivery capability, the high speed charge pump
can operate with storage capacitors as small as 0.1ОјF.
Reducing storage capacitor size to 0.1ОјF shrinks board
space, thereby lowering production costs. Small capacitors also shorten the transceiver turn-on time to
less than 200Ојs, which makes the LT1180 ideal for applications which must address the RS232 transceiver quickly. The interface described here takes advantage
of fast turn-on to reduce power dissipation.
The circuit shown in Figure 1 automatically shuts down
when there is no data п¬‚ow through the interface. A data
stream on either the RS232 or logic inputs activates
the transceiver. The data must begin with a logic 1
preamble, and the data stream must contain a sufп¬Ѓcient number of 1вЂ™s to keep the transceiver active. The
preamble may be as short as 50Ојs. Alternatively, the …

Model Line

Series: LT1181A (6)

LT1181ACN#PBF LT1181ACSW#PBF LT1181ACSW#TRPBF LT1181AIN#PBF LT1181AISW#PBF LT1181AISW#TRPBF

Manufacturer's Classification

Interface > RS232/RS562 Transceivers