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RS-232 RS-422 RS-485 RS-644

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LINE INTERFACES. RS-232 RS-422 RS-485 RS-644. ANALOG PRODUCT MARKET. Analog Market Forecast 2005 $B 36.4. Analog Market Breakdown 2000 $B 30.5. Source: ICE. INTERFACES ICs. This category includes line drivers & receivers, keyboard,

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Presentation Transcript
slide1
LINE INTERFACES

RS-232

RS-422

RS-485

RS-644

slide2
ANALOG PRODUCT MARKET

Analog Market Forecast

2005

$B 36.4

Analog Market Breakdown

2000

$B 30.5

Source: ICE

slide3
INTERFACES ICs
  • This category includes line drivers & receivers, keyboard,
  • encoders, error checking circuits, and display drivers.
  • Analysts predict a CAGR of only 6.6% till 2005.
  • Top 10 Manufacturers :

Source: ICE

slide5
INTERFACES Ics MAIN STANDARDS

Differential

Single Ended

Line Length (m)

Source: STm

slide6
DATA TRANSMISSION MODE

Single-Ended Transmission

(Unbalanced)

Differential Transmission

slide7
DATA TRANSMISSION TOPOLOGIES

RS-644

(LVDS)

RS-232

Point-to-Point Connection

RS-423

RS-422

Multi-Drop Connection

RS-485

Multi-Point Connection Using Multiple Transceiver

slide8
RS-232

Data rate 512 Kbps (Std : 20 Kbps)

Maximum line length 20 m

Transmission mode Point to point

Function Driver Receiver Transceiver

ESD Protection Standard (8kV) or 15kV

(human body model)

Package SO SSOP

Actors (3.3V) Maxim (Drv/Rcv): 0/1, 1/1, 2/2, 5/3, 3/5, 3/3,4/5.

TI (Drv/Rcv): only 1part, sn75lv4737A(3/5)

NSC(Drv/Rcv): only 1 part, DS14C335 (3/5)

slide9
RS-485

Data rate 35 Mbps (Std : 10 Mbps)

Maximum line length 1200 m

Transmission mode Multipoint

Function Driver Receiver Transceiver

ESD Protection Standard (8kV) or 15kV

(human body model)

Package SO

Actors (3.3V) Maxim (Drv/Rcv): 1/1, 0/4, 0/3

TI: no parts in low voltage

NSC: no parts in low voltage

slide10
RS-644 : LVDS

Data rate : 655 Mbps

Maximum line length 15 m

Transmission mode Point to point

Function Driver Receiver Transceiver

Flat Panel Display Serdes

ESD Protection Standard (8kV) or 15kV

(human body model)

Package SO SSOP TSSOP

Actors (3.3V) NSC T.I.

Maxim Pericom

Fairchild

slide11
RS-644 : LVDS

LVDS

L - Low

V- Voltage

D - Differential

S - Signaling

  • Conforms to the TIA/EIA-644 Standard
  • Low Power, High Speed Differential Technology
  • ± 350mV voltage swing with 1.2V typical offset voltage
  • Serial data rates up to 655Mbs
  • Primarily used in point-to-point
slide12
LVDS FUNCTION

Source: Fairchild

slide13
LVDS CROSS REFERENCE

Source: Fairchild

slide15
ACRONYMS

• LVDS Low Voltage Differential Signaling

• BLVDS Bus/Backplane Low Voltage Differential Signaling (NSC)

• LVDM Low Voltage Differential Multi-drop (TI)

• LVDT Low Voltage Differential w/Termination (TI)

• MLVDS Multi-Point Low Voltage Differential Signaling (RS-xxx?)

• SerDes Serializer/Deserializer

• ANSI American National Standard Institute

• TIA Telecommunication Industry Association

• EIA Electronic Institute Association

• RS-xxx Recognized Standard

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