LTC1690CMS8#PBF Linear Technology, LTC1690CMS8#PBF Datasheet

IC RCVR/DVR PAIR LOW PWR 8-MSOP

LTC1690CMS8#PBF

Manufacturer Part Number
LTC1690CMS8#PBF
Description
IC RCVR/DVR PAIR LOW PWR 8-MSOP
Manufacturer
Linear Technology
Type
Driverr
Datasheet

Specifications of LTC1690CMS8#PBF

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1690CMS8#PBFLTC1690CMS8
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC1690CMS8#PBFLTC1690CMS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
APPLICATIO S
FEATURES
TYPICAL APPLICATIO
D1
R1
No Damage or Latchup to 15kV ESD (Human Body
Model), IEC1000-4-2 Level 4 ( 8kV) Contact and
Level 3 ( 8kV) Air Discharge
Guaranteed High Receiver Output State for
Floating, Shorted or Terminated Inputs with No
Signal Present
Drives Low Cost Residential Telephone Wires
I
Single 5V Supply
–7V to 12V Common Mode Range Permits 7V
Ground Difference Between Devices on the Data Line
Power-Up/Down Glitch-Free Driver Outputs Permit
Live Insertion or Removal of Transceiver
Driver Maintains High Impedance with the Power Off
Up to 32 Transceivers on the Bus
Pin Compatible with the SN75179 and LTC490
Available in SO, MSOP and PDIP Packages
Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator
Line Repeater
CC
3
2
= 600 A Max with No Load
RECEIVER
DRIVER
LTC1690
U
5
6
7
8
120
120
Y1
Z1
B1
A1
U
120
120
A2
B2
Y2
Z2
8
7
6
5
RECEIVER
Receiver Pair with Fail-Safe
DESCRIPTIO
LTC1690
The LTC
compatible with the requirements of RS485 and RS422.
The receiver offers a fail-safe feature that guarantees a
high receiver output state when the inputs are left open,
shorted together or terminated with no signal present. No
external components are required to ensure the high
receiver output state.
Separate driver output and receiver input pins allow full
duplex operation. Excessive power dissipation caused by
bus contention or faults is prevented by a thermal shut-
down circuit which forces the driver outputs into a high
impedance state.
The LTC1690 is fully specified over the commercial and
industrial temperature ranges. The LTC1690 is available in
8-Pin SO, MSOP and PDIP packages.
DRIVER
, LTC and LT are registered trademarks of Linear Technology Corporation.
1690 TA01
®
1690 is a low power receiver/driver pair that is
Differential Driver and
2
3
R2
D2
U
Receiver Output
D1
B2
A2
R2
Driving a 1000 Foot STP Cable
LTC1690
1690 TA01a
1

Related parts for LTC1690CMS8#PBF

LTC1690CMS8#PBF Summary of contents

Page 1

... The LTC1690 is fully specified over the commercial and industrial temperature ranges. The LTC1690 is available in 8-Pin SO, MSOP and PDIP packages. , LTC and LT are registered trademarks of Linear Technology Corporation. LTC1690 120 ...

Page 2

LTC1690 ABSOLUTE MAXIMUM Supply Voltage (V ) .............................................. 6.5V CC Driver Input Voltage ..................... –0. Driver Output Voltages ................................. –7V to 10V Receiver Input Voltages ......................................... 14V Receiver Output Voltage .............. –0. Junction ...

Page 3

DC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V Receiver Output High Voltage OH V Receiver Output Low Voltage OL R Receiver Input Resistance IN I Supply Current CC I Driver Short-Circuit Current, V OSD1 OUT ...

Page 4

LTC1690 W U TYPICAL PERFOR A CE CHARACTERISTICS Receiver Input Offset Voltage vs Temperature –20 – – –7V CM –80 –100 –120 –140 V = 12V CM –160 –180 ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Receiver Short-Circuit Current vs Temperature 5.25V CC 60 OUTPUT LOW OUTPUT HIGH –55 –35 – 105 125 TEMPERATURE ( ...

Page 6

LTC1690 W U TYPICAL PERFOR A CE CHARACTERISTICS Driver Differential Output Voltage vs Output Current 100 DRIVER DIFFERENTIAL OUTPUT VOLTAGE ...

Page 7

PIN FUNCTIONS V (Pin 1): Positive Supply. 4.75V < (Pin 2): Receiver Output high if (A – B) and low if (A – B) – 200mV. D (Pin 3): Driver Input. If ...

Page 8

LTC1690 U U APPLICATIONS INFORMATION A typical application is shown in Figure 6. Two twisted pair wires connect two driver/receiver pairs for full duplex data transmission. Note that the driver and receiver outputs are always enabled. If the outputs must ...

Page 9

U U APPLICATIONS INFORMATION Fault Protection When shorted to –7V or 10V at room temperature, the short-circuit current in the driver outputs is limited by internal resistance or protection circuitry to 250mA maxi- mum. Over the industrial temperature range, the ...

Page 10

LTC1690 U U APPLICATIONS INFORMATION Cables and Data Rate The transmission line of choice for RS485 applications is a twisted pair. There are coaxial cables (twinaxial) made for this purpose that contain straight pairs, but these are less flexible, more ...

Page 11

... 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

... Low Power, Pin Compatible with LTC1690 Low Power 2500V Pin Compatible with LTC485 Pin Compatible with LTC490/LTC491 RS232 Receiver 2.7k 2.7k RX RECEIVER 1690 TA03 Isolation, Full Duplex RMS 15kV ESD Protection 1690f LT/TP 0400 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1998 ...

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