LT1785ACS8 Linear Technology, LT1785ACS8 Datasheet - Page 16
![IC TXRX 60V RS485/RS422 8SOIC](/photos/6/83/68363/lt1785acs8_pbf_sml.jpg)
LT1785ACS8
Manufacturer Part Number
LT1785ACS8
Description
IC TXRX 60V RS485/RS422 8SOIC
Manufacturer
Linear Technology
Type
Transceiverr
Datasheet
1.LT1785CN8PBF.pdf
(16 pages)
Specifications of LT1785ACS8
Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1785ACS8
Manufacturer:
LT
Quantity:
20 000
Company:
Part Number:
LT1785ACS8#PBF
Manufacturer:
LTC
Quantity:
4 235
Company:
Part Number:
LT1785ACS8#TRPBF
Manufacturer:
AD
Quantity:
15 692
LT1785/LT1785A/
LT1791/LT1791A
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC485
LTC491
LTC1483
LTC1485
LTC1487
LTC1520
LTC1535
LTC1685
LTC1687
16
RO
RE
DE
DI
1
2
3
4
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
TX
LT1785
RX
DESCRIPTION
Low Power RS485 Interface Transceiver
Differential Driver and Receiver Pair
Ultralow Power RS485 Low EMI Transceiver
Differential Bus Transceiver
Ultralow Power RS485 with Low EMI, Shutdown and High Input Impedance
50Mbps Precision Quad Line Receiver
Isolated RS485 Full-Duplex Transceiver
52Mbps RS485 Half-Duplex Transceiver
52Mbps RS485 Full-Duplex Transceiver
RO
RE
DE
B
A
DI
●
FAX: (408) 434-0507
7
6
1
2
3
4
120Ω
R
T
TX
LT1785
RX
Figure 11. RS485 Network with 120V AC Line Fault Protection
Figure 10. Half-Duplex RS485 Network Operation
DI
B
A
●
4
www.linear.com
6
5
8
7
LT1785
DE
V
CC
3
6
A
RE
1.5KE36CA
2
B
7
RO
1
POLYSWITCH
TR600-150
RAYCHEM
× 2
DI
4
COMPOSITE
CARBON
LT1785
47Ω
47Ω
5W
DE
3
6
A
RE
2
0.1μF
300V
B
7
RO
1
R
T
,120Ω
COMMENTS
I
I
Controlled Driver Slew Rate
10Mbaud Operation
Channel-to-Channel Skew 400ps (Typ)
2500V
Propagation Delay Skew 500ps (Typ)
Propagation Delay Skew 500ps (Typ)
Up to 256 Transceivers on the Bus
CC
CC
= 300μA (Typ)
= 300μA
RMS
Isolation in Surface Mount Package
120Ω
R
T
© LINEAR TECHNOLOGY CORPORATION 1998
7
6
B
A
178591 F11
LT 0409 REV C • PRINTED IN USA
LT1785
RX
TX
1
2
3
4
178591 F10
RO
RE
DE
DI
178591fc