LTC489ISW#PBF Linear Technology, LTC489ISW#PBF Datasheet

IC LINE RCVR RS485 QUAD 16-SOIC

LTC489ISW#PBF

Manufacturer Part Number
LTC489ISW#PBF
Description
IC LINE RCVR RS485 QUAD 16-SOIC
Manufacturer
Linear Technology
Type
Line Receiverr
Datasheet

Specifications of LTC489ISW#PBF

Number Of Drivers/receivers
0/4
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Interface Circuit Standard 1
RS-485
Number Of Receivers
4
Number Of Transmitters
Not Required
Number Of Transceivers
Not Required
Data Transmission Topology
Multipoint
Receiver Signal Type
Differential
Transmitter Signal Type
Not Required
Single Supply Voltage (typ)
5V
Single Supply Voltage (min)
4.75V
Single Supply Voltage (max)
5.25V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Supply Current
10mA
Power Supply Requirement
Single
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
16
Package Type
SOIC W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC489ISW#PBFLTC489ISW
Manufacturer:
LINEAR
Quantity:
6
Company:
Part Number:
LTC489ISW#PBFLTC489ISW
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC489ISW#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC489ISW#PBFLTC489ISW#TRPBF
Manufacturer:
LTNEAR
Quantity:
20 000
APPLICATIONS
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
n
n
Low Power: I
Designed for RS485 or RS422 Applications
Single 5V Supply
–7V to 12V Bus Common Mode Range Permits ±7V
Ground Difference Between Devices on the Bus
60mV Typical Input Hysteresis
Receiver Maintains High Impedance in Three-State or
with the Power Off
28ns Typical Receiver Propagation Delay
Pin Compatible with the SN75173 (LTC488)
Pin Compatible with the SN75175 (LTC489)
Low Power RS485/RS422 Receivers
Level Translator
CC
= 7mA Typ
DI
DI
EN
DRIVER
1/4 LTC486
DRIVER
1/4 LTC487
EN12
EN
120Ω
120Ω
4000 FT 24 GAUGE TWISTED PAIR
4000 FT 24 GAUGE TWISTED PAIR
DESCRIPTION
The LTC
line receivers designed for multipoint data transmission
standard RS485 applications with extended common
mode range (12V to –7V). They also meet the require-
ments of RS422.
The CMOS design offers signifi cant power savings over
its bipolar counterpart without sacrifi cing ruggedness
against overload or ESD damage.
The receiver features three-state outputs, with the receiver
output maintaining high impedance over the entire com-
mon mode range.
The receiver has a fail-safe feature which guarantees a
high output state when the inputs are left open.
Both AC and DC specifi cations are guaranteed 4.75V to
5.25V supply voltage range.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Quad RS485 Line Receiver
®
488 and LTC489 are low power differential bus/
120Ω
120Ω
2
2
1
1
RECEIVER
1/4 LTC488
RECEIVER
1/4 LTC489
EN
4
EN12
4
EN
12
LTC488/LTC489
3
3
4889 TA01
RO
RO
4889fb
1

Related parts for LTC489ISW#PBF

LTC489ISW#PBF Summary of contents

Page 1

... The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open. Both AC and DC specifi cations are guaranteed 4.75V to 5.25V supply voltage range. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners RECEIVER 120Ω ...

Page 2

LTC488/LTC489 ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (V ) ................................................12V CC Control Input Currents .......................... –25mA to 25mA Control Input Voltages ..................–0. Receiver Input Voltages ..........................................±14V Receiver Output Voltages ..............–0. PIN CONFIGURATION LTC488 TOP VIEW ...

Page 3

... LTC489CN#TRPBF LTC489CSW#PBF LTC489CSW#TRPBF LTC489IN#PBF LTC489IN#TRPBF LTC489ISW#PBF LTC489ISW#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: DC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi ...

Page 4

LTC488/LTC489 TYPICAL PERFORMANCE CHARACTERISTICS Receiver Output Low Voltage vs Temperature 8mA 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –50 – 100 TEMPERATURE (°C) 4889 G01 Receiver Output Low Voltage vs ...

Page 5

PIN FUNCTIONS B 1 (Pin 1): Receiver 1 Input. A1 (Pin 2): Receiver 1 Input. RO1 (Pin 3): Receiver 1 Output. If the receiver output is enabled, then if A > 200mV, RO1 will be high ...

Page 6

LTC488/LTC489 TEST CIRCUITS D Note: The input pulse is supplied by a generator having the following characteristics 1MHz, Duty Cycle = 50%, t Figure 2. Receiver Enable and Disable Timing Test Circuit SWITCHING TIME WAVEFORMS V OD2 INPUT ...

Page 7

APPLICATIONS INFORMATION Typical Application A typical connection of the LTC488/LTC489 is shown in Figure 5. Two twisted-pair wires connect driver/ receiver pairs for half-duplex data transmission. There are no restrictions on where the chips are connected to ...

Page 8

LTC488/LTC489 APPLICATIONS INFORMATION data rate. With lower quality PVC cables, the dielectric loss factor can be 1000 times worse. PVC twisted-pairs have terrible losses at high data rates (> 100kbps), and greatly reduce the maximum cable length. At low data ...

Page 9

APPLICATIONS INFORMATION Receiver Open-Circuit Fail-Safe Some data encoding schemes require that the output of the receiver maintains a known state (usually a logic 1) when the data is fi nished transmitting and all drivers on the line are forced in ...

Page 10

LTC488/LTC489 PACKAGE DESCRIPTION .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 ( ) +0.889 8.255 –0.381 NOTE: INCHES 1. DIMENSIONS ARE MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH ...

Page 11

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... Full-Duplex in SO-8 1μA Shutdown Mode Lowest Power on 5V Supply Low EMI/Low Power with Shutdown 10Mbps Operation Up to 256 Nodes on a Bus 52Mbps, Pin Compatible with LTC485 52Mbps, Pin Compatible LTC490/LTC491 LT 0309 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1992 4889fb ...

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