Datasheet Linear Technology LTC1323

Manufacturer	Linear Technology
Series	LTC1323

Single 5V AppleTalk Transceiver

Datasheets

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PDF, 251 Kb, File uploaded: Nov 12, 2017

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Packaging

	LTC1323CS16#PBF	LTC1323CS16#TRPBF	LTC1323CSW#PBF	LTC1323CSW#TRPBF
N	1	2	3	4
Package	SO-16 Package Outline Drawing	SO-16 Package Outline Drawing	SW-24 Package Outline Drawing	SW-24 Package Outline Drawing
Package Code	S	S	SW	SW
Package Index	05-08-1610 (S16)	05-08-1610 (S16)	05-08-1620 (SW24)	05-08-1620 (SW24)
Pin Count	16	16	24	24

Parametrics

Parameters / Models	LTC1323CS16#PBF	LTC1323CS16#TRPBF	LTC1323CSW#PBF	LTC1323CSW#TRPBF
DCE or DTE	DTE	DTE	DTE	DTE
Drivers	2	2	2	2
ESD, kV	10	10	10	10
Export Control	no	no	no	no
Multiprotocol Data Rate	120kbps (RS232/RS562), 2Mbps (RS422/RS485)	120kbps (RS232/RS562), 2Mbps (RS422/RS485)	120kbps (RS232/RS562), 2Mbps (RS422/RS485)	120kbps (RS232/RS562), 2Mbps (RS422/RS485)
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70
Protocols Supported	LocalTalk, RS232, RS422	LocalTalk, RS232, RS422	LocalTalk, RS232, RS422	LocalTalk, RS232, RS422
Receivers	3	3	3	3
Signals	Data, Control	Data, Control	Data, Control	Data, Control
Supply Voltage Range	5V	5V	5V	5V

Eco Plan

	LTC1323CS16#PBF	LTC1323CS16#TRPBF	LTC1323CSW#PBF	LTC1323CSW#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Design Notes

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Interfacing to Apple LocalTalk В® Networks &mdash DN85
PDF, 131 Kb, File published: Sep 15, 1994
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advertisement Interfacing to Apple LocalTalk В® Networks
Design Note 85
Robert Reay
external вЂ“5V supply. The bipolar chips also draw large
supply currents, making them undesirable for batterypowered applications. A better solution is to use the
LTC1323CS24 which provides a complete low power
serial I/O interface while generating itвЂ™s own вЂ“5V supply
as shown in Figure 1. LocalTalk Overview
Of the many connection technologies available for linking an AppleTalk В® network, LocalTalk is one of the most
common because it is designed to connect local work
groups using inexpensive and easily configurable plugand-play cabling. LocalTalk is laid out in a bus topology
with all devices joined in a line with no circular connections. LocalTalk conforms to the EIA RS422 electrical
standard to provide a balanced differential voltage signal transmitting at 230.4kbs over a maximum distance
of 300 meters with up to 32 devices connected to a
twisted-pair network. The balanced configuration provides good isolation from ground noise currents and is
not susceptible to fluctuating potentials between system grounds or common-mode electromagnetic interference (EMI). The LTC1323 uses the differential driver output stage of
Figure 2. The driver swings between ground and VCC
when a differential LocalTalk load is connected between
TXD + and TXD вЂ“ while meeting the EIA RS422 differential voltage swing requirement of В±2.0V into 100в„¦.
When a single-ended load is connected from TXD + to
ground or TXD вЂ“ to ground, the driver will swing between VEE and VCC while meeting the EIA 562 voltage
swing requirement of В±3.7V into 3kв„¦. Because the
differential LocalTalk load requires a large current drive, …

Model Line

Series: LTC1323 (4)

LTC1323CS16#PBF LTC1323CS16#TRPBF LTC1323CSW#PBF LTC1323CSW#TRPBF

Manufacturer's Classification

Interface > Multiprotocol Transceivers