V385中文资料

V385

8-B IT LVDS T RANSMITTER FOR V

IDEO

General Description

The V385 transmitter converts 28 bits of 3.3 V

CMOS/TTL into 4 Low Voltage Differential Signaling (LVDS) data streams while the transmit clock input is transmitted in parallel with the data streams over a fifth LVDS link. The V385 can be programmed for rising edge or falling edge clocks through pin R_FB.ICS manufactures a large variety of video application devices. Consult ICS for all of your video application requirements.

Pin Assignment

Features

?Pin and function compatible with the National

DS90C385, TI SN65LVDS93 and THine THC63LVDM83

?Convert 28 bits of 3.3 V CMOS/TTL into 4 LVDS

streams

?Up to 2.38 Gbps throughput or 297.5 Megabytes/sec

bandwidth

?Wide clock frequency range from 20 MHz to 85 MHz ?Spread spectrum compatible

?Supports VGA, SVGA, XGA, and SXGA ?LVDS voltage swing of 350 mV for low EMI ?On-chip PLL requires no external components ?Single 3.3 V low-power CMOS design ?Programmable rising or falling edge strobe ?Power-down control function

?Compatible with TIA/EIA-644 LVDS standards ?

Packaged in a 56-pin TSSOP (Pb free available)

Block Diagram

Pin Descriptions

Pin Pin Type Pin Name Pin Description/Name

1Power VCC 3.3V Power

2CMOS/TTL TxIN5Parallel digital video input pins (TxIN0..27).

3CMOS/TTL TxIn6Parallel digital video input pins (TxIN0..27).

4CMOS/TTL TxIn7Parallel digital video input pins (TxIN0..27).

5Ground GND Ground

6CMOS/TTL TxIN8Parallel digital video input pins (TxIN0..27).

7CMOS/TTL TxIN9Parallel digital video input pins (TxIN0..27).

8CMOS/TTL TxIN10Parallel digital video input pins (TxIN0..27).

9Power VCC 3.3V Power

10CMOS/TTL TxIN11Parallel digital video input pins (TxIN0..27).

11CMOS/TTL TxIN12Parallel digital video input pins (TxIN0..27).

12CMOS/TTL TxIN13Parallel digital video input pins (TxIN0..27).

13Ground GND Ground

14CMOS/TTL TxIN14Parallel digital video input pins (TxIN0..27).

15CMOS/TTL TxIN15Parallel digital video input pins (TxIN0..27).

16CMOS/TTL TxIN16Parallel digital video input pins (TxIN0..27).

17CMOS/TTL R_FB Programmable strobe select input pin (R_FB). High = rising edge; Low =

falling edge.

18CMOS/TTL TxIN17Parallel digital video input pins (TxIN0..27).

19CMOS/TTL TxIN18Parallel digital video input pins (TxIN0..27).

20CMOS/TTL TxIN19Parallel digital video input pins (TxIN0..27).

21Ground GND Ground

22CMOS/TTL TxIN20Parallel digital video input pins (TxIN0..27).

23CMOS/TTL TxIN21Parallel digital video input pins (TxIN0..27).

24CMOS/TTL TxIN22Parallel digital video input pins (TxIN0..27).

25CMOS/TTL TxIN23Parallel digital video input pins (TxIN0..27).

26Power VCC 3.3V Power

27CMOS/TTL TxIN24Parallel digital video input pins (TxIN0..27).

28CMOS/TTL TxIN25Parallel digital video input pins (TxIN0..27).

29Ground GND Ground

30CMOS/TTL TxIN26Parallel digital video input pins (TxIN0..27).

31CMOS/TTL TxCLKIN Clock input (TxCLKIN)

32CMOS/TTL PWRDWN Active low. Powerdown tri-states outputs.

33Ground PLL_GND Ground

34Power PLL_VCC 3.3V Power

35Ground PLL_GND Ground

36Ground LVDS_GND Ground

External Components

The V385 requires no external components.

37LVDS TxOUT3+LVDS output (+)38LVDS TxOUT3-LVDS output (-)39LVDS TxCLKOUT+LVDS output (+)40LVDS TxCLKOUT-LVDS output (-)41LVDS TxOUT2+LVDS output (+)42LVDS TxOUT2-LVDS output (-)43Ground LVDS_GND Ground 44Power LVDS_VCC 3.3V Power 45LVDS TxOUT1+LVDS output (+)46LVDS TxOUT1-LVDS output (-)47LVDS TxOUT0+LVDS output (+)48LVDS TxOUT0-LVDS output (-)49Ground LVDS_GND Ground

50CMOS/TTL TxIN27Parallel digital video input pins (TxIN0..27).51CMOS/TTL TxIn0Parallel digital video input pins (TxIN0..27).52CMOS/TTL TxIn1Parallel digital video input pins (TxIN0..27).53Ground GND Ground

54CMOS/TTL TxIn2Parallel digital video input pins (TxIN0..27).55CMOS/TTL TxIn3Parallel digital video input pins (TxIN0..27).56

CMOS/TTL

TxIn4

Parallel digital video input pins (TxIN0..27).

Pin

Pin Type

Pin Name

Pin Description/Name

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the V385. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range.

Recommended Operation Conditions

Electrical Characteristics

VDD=3.3 V ±10%, Ambient temperature 0 to +70°C

Item

Rating

Supply Voltage, VDD -0.3 V to +4 V All Inputs and Outputs

-0.3 V to VCC+0.3 V Electrostatic Discharge (EIAJ, 0?, 200 pF)> 500 V Ambient Operating Temperature 0 to +70°C Storage Temperature -65 to +150°C Junction Temperature

150°C Maximum Soldering Temperature

260°C

Parameter

Min.

Typ.

Max.

Units

Ambient Operating Temperature

0+70°C Power Supply Voltage (measured in respect to GND)

3.0

3.3

3.6

V

Parameter

Symbol Conditions Min.Typ.Max.Units Freq.

CMOS/TTL DC Specifications Input High Voltage V IH 2.00VCC V Input Low Voltage V IL GND

0.80V Input Current I IN GND

No switching for input pins

10

μA

LVDS DC Specifications Differential Output Voltage V OD

R L = 100 ohms

250

345

450mV Change in V OD Between Complimentary Output States ?V OD

35

mV Common Mode Voltage V CM

1.125

1.250

1.375V Change in V CM Between Complimentary Output States ?V CM

35

mV Output Short Circuit Current I OS V OD =0V

3.55mA Output Tri-State Current

I OZ

Power Down#=0V

±1

±10

μA

Thermal Characteristics

Recommended Transmitter Input Characteristics

TxCLK IN Transition Time TCIT 5

ns TxCLK IN Period TCIP 11.76T 50ns TxCLK IN High Time TCIH 0.35T 0.5T 0.65T ns TxCLK IN Low Time TCIL 0.35T 0.5T

0.65T ns TxIN Transition Time TXIT 1.5

6ns Transmitter Switching Characteristics

LVDS Low-to-High Time LLHT 0.75 1.4ns LVDS High-to-Low Time LHLT 0.75

1.4ns Transmitter Output Pulse Position

TPPos0Bit0-0.200.20.285 MHz TPPos1Bit1T/7-0.2T/7T/7+0.2ns 85 MHz TPPos2Bit22T/7-0.22T/72T/7+0.2ns 85 MHz TPPos3Bit33T/7-0.23T/73T/7+0.2ns 85 MHz TPPos4Bit44T/7-0.24T/74T/7+0.2ns 85 MHz TPPos5Bit55T/7-0.25T/75T/7+0.2ns 85 MHz TPPos6

Bit6

6T/7-0.26T/76T/7+0.2ns 85 MHz

Transmitter Phase Loop Set TPLLS 10

ms TxIN Setup to TxCLK IN TSTC 2.5ns TxIN Hold to TxCLK IN THTC 0ns

TxCLK IN to TxCLK OUT Delay

TCCD

10

30

ns

Parameter

Symbol

Conditions

Min.Typ.

Max.Units

Thermal Resistance Junction to Ambient

θJA Still air 84°C/W θJA 1 m/s air flow 76°C/W θJA

3 m/s air flow

67°C/W Thermal Resistance Junction to Case

θJC

50

°C/W

Parameter

Symbol

Conditions Min.Typ.Max.

Units

Freq.

AC Timing Diagrams

Figure AC1. Transmitter Setup/Hold and High/Low Times (Falling Edge Strobe or R_FB=0)

Figure AC2. Clock IN to Clock OUT Delay (Rising Edge Strobe or R_FB=1)

Figure AC3. Phase Lock Loop Set Time

Figure AC4. Transmitter Device Transition Times and Load

Figure AC5. Transmitter LVDS Output Pulse Position Measurement

Package Outline and Package Dimensions (56-pin TSSOP) Package dimensions are kept current with JEDEC Publication No. 95

Ordering Information

Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended

without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments.

Part / Order Number Marking Shipping Packaging

Package

Temperature

Notes

V385AG V385AG Tubes 56-pin TSSOP 0 to +70° C V385AGT V385AG Tape and Reel

56-pin TSSOP 0 to +70° C V385AGLF V385AGLF Tubes 56-pin TSSOP 0 to +70° C V385AGLFT V385AGLF Tape and Reel

56-pin TSSOP 0 to +70° C V385GLF V385GLF Tubes 56-pin TSSOP 0 to +70° C Replaced by V385AGLF V385GLFT

V385GLF

Tape and Reel

56-pin TSSOP

0 to +70° C

Replaced by V385AGLFT