NSC DS90CF384AMTDX, DS90CF384AMTD, DS90CF384AMDC Datasheet

DS90CF384A/DS90CF364A
+3.3V LVDS Receiver 24-Bit Flat Panel Display (FPD)
Link—65 MHz, +3.3V LVDS Receiver 18-Bit Flat Panel
Display (FPD) Link—65 MHz

General Description

The DS90CF384A receiver converts the four LVDS data
streams (Up to 1.8 Gbps throughput or 227 Megabytes/sec
bandwidth) back into parallel 28 bits of CMOS/TTL data (24
bits of RGB and 4 bits of Hsync,Vsync, DE and CNTL).Also
available is the DS90CF364A that converts the three LVDS
data streams (Up to 1.3 Gbps throughput or 170 Megabytes/
sec bandwidth) back into parallel 21 bits of CMOS/TTL data
(18 bits of RGB and 3 bits of Hsync, Vsync and DE). Both
Receivers’ outputs are Falling edge strobe. A Rising edge or
Falling edge strobe transmitter (DS90C383A/DS90C363A)
will interoperate with a Falling edge strobe Receiver without
any translation logic.

This chipset is an ideal means to solve EMI and cable size
problems associated with wide, high speed TTL interfaces.

Features

n 20 to 65 MHz shift clock support
n 50%duty cycle on receiver output clock
n Best–in–Class Set & Hold Times on RxOUTPUTs
n Rx power consumption

<

142 mW (typ)@65MHz

Grayscale

n Rx Power-down mode

<

200µW (max)

n ESD rating

>

7 kV (HBM),>700V (EIAJ)

n Supports VGA, SVGA, XGA and Dual Pixel SXGA.
n PLL requires no external components
n Compatible with TIA/EIA-644 LVDS standard
n Low profile 56-lead or 48-lead TSSOP package

Block Diagrams

TRI-STATE®is a registered trademark of National Semiconductor Corporation.

DS90CF384A

DS100870-27

Order Number DS90CF384AMTD
See NS Package Number MTD56

DS90CF364A

DS100870-28

Order Number DS90CF364AMTD
See NS Package Number MTD48

October 1999

DS90CF384A/DS90CF364A +3.3V LVDS Receiver 24-Bit-Color Flat Panel Display (FPD)

Link— 65 MHz , +3.3V LVDS Receiver 18-Bit-Color Flat Panel Display (FPD) Link—65 MHz

© 1999 National Semiconductor Corporation DS100870 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Supply Voltage (V

CC

) −0.3V to +4V

CMOS/TTL Input Voltage −0.3V to (V

CC

+ 0.3V)

CMOS/TTL Output Voltage −0.3V to (V

CC

+ 0.3V)

LVDS Receiver Input Voltage −0.3V to (V

CC

+ 0.3V)
Junction Temperature +150˚C
Storage Temperature −65˚C to +150˚C
Lead Temperature

(Soldering, 4 sec) +260˚C

Maximum Package Power
Dissipation Capacity

@

25˚C

MTD56 (TSSOP) Package:

DS90CF384A 1.61 W

MTD48 (TSSOP) Package:

DS90CF364A 1.89 W

Package Derating:

DS90CF384A 12.4 mW/˚C above +25˚C
DS90CF364A 15 mW/˚C above +25˚C

ESD Rating

(HBM, 1.5 kΩ, 100 pF)

>

7kV

(EIAJ, 0Ω, 200 pF)

>

700V

Recommended Operating
Conditions

Min Nom Max Units

Supply Voltage (V

CC

) 3.0 3.3 3.6 V

Operating Free Air

Temperature (T

A

) −10 +25 +70 ˚C
Receiver Input Range 0 2.4 V
Supply Noise Voltage (V

CC

) 100 mV

PP

Electrical Characteristics

Over recommended operating supply and temperature ranges unless otherwise specified.

Symbol Parameter Conditions Min Typ Max Units

CMOS/TTL DC SPECIFICATIONS (For PowerDown Pin)

V

IH

High Level Input Voltage 2.0 V

CC

V

V

IL

Low Level Input Voltage GND 0.8 V

V

CL

Input Clamp Voltage ICL= −18 mA −0.79 −1.5 V

I

IN

Input Current VIN= 0.4V, 2.5V or V

CC

+1.8 +10 µA

V

IN

= GND −10 0 µA

CMOS/TTL DC SPECIFICATIONS

V

OH

High Level Output Voltage IOH= −0.4 mA 2.7 3.3 V

V

OL

Low Level Output Voltage IOL= 2 mA 0.06 0.3 V

I

OS

Output Short Circuit Current V

OUT

= 0V −60 −120 mA

LVDS RECEIVER DC SPECIFICATIONS

V

TH

Differential Input High Threshold VCM= +1.2V +100 mV

V

TL

Differential Input Low Threshold −100 mV

I

IN

Input Current VIN= +2.4V, VCC= 3.6V

±

10 µA

V

IN

= 0V, VCC= 3.6V

±

10 µA

RECEIVER SUPPLY CURRENT

ICCRW Receiver Supply Current C

L

= 8 pF, f = 32.5 MHz 49 65 mA

Worst Case Worst Case Pattern, f = 37.5 MHz 53 70 mA

DS90CF384A

(Figures

1,4)

f = 65 MHz 81 105 mA

ICCRW Receiver Supply Current C

L

= 8 pF, f = 32.5 MHz 49 55 mA

Worst Case Worst Case Pattern, f = 37.5 MHz 53 60 mA

DS90CF364A

(Figures

1,4)

f = 65 MHz 78 90 mA

ICCRG Receiver Supply Current, C

L

= 8 pF, f = 32.5 MHz 28 45 mA

16 Grayscale 16 Grayscale Pattern, f = 37.5 MHz 30 47 mA

(Figures 2, 3, 4 )

f = 65 MHz 43 60 mA

ICCRZ Receiver Supply Current Power Down = Low

10 55 µA

Power Down Receiver Outputs Stay Low during

Power Down Mode

Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device
should be operated at these limits. The tables of “Electrical Characteristics” specify conditions for device operation.

DS90CF384A/DS90CF364A

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Electrical Characteristics (Continued)

Note 2: Typical values are given for VCC= 3.3V and TA= +25C.
Note 3: Current into device pins is defined as positive. Current out of device pins is defined as negative. Voltages are referenced to ground unless otherwise speci-

fied (except V

OD

and ∆VOD).

Receiver Switching Characteristics

Over recommended operating supply and temperature ranges unless otherwise specified

Symbol Parameter Min Typ Max Units

CLHT CMOS/TTL Low-to-High Transition Time

(Figure 4 )

25ns

CHLT CMOS/TTL High-to-Low Transition Time

(Figure 4 )

1.8 5 ns

RSPos0 Receiver Input Strobe Position for Bit 0

(Figure 11

,

Figure 12 )

f = 65 MHz 0.7 1.1 1.4 ns

RSPos1 Receiver Input Strobe Position for Bit 1 2.9 3.3 3.6 ns
RSPos2 Receiver Input Strobe Position for Bit 2 5.1 5.5 5.8 ns
RSPos3 Receiver Input Strobe Position for Bit 3 7.3 7.7 8.0 ns
RSPos4 Receiver Input Strobe Position for Bit 4 9.5 9.9 10.2 ns
RSPos5 Receiver Input Strobe Position for Bit 5 11.7 12.1 12.4 ns
RSPos6 Receiver Input Strobe Position for Bit 6 13.9 14.3 14.6 ns
RSKM RxIN Skew Margin (Note 4)

(Figure 13 )

f = 65 MHz 400 ps

RCOP RxCLK OUT Period

(Figure 5)

15 T 50 ns

RCOH RxCLK OUT High Time

(Figure 5 )

f = 65 MHz 5.0 7.6 9.0 ns

RCOL RxCLK OUT Low Time

(Figure 5)

5.0 6.3 9.0 ns

RSRC RxOUT Setup to RxCLK OUT

(Figure 5 )

4.5 7.3 ns

RHRC RxOUT Hold to RxCLK OUT

(Figure 5 )

4.0 6.3 ns

RCCD RxCLK IN to RxCLK OUT Delay 25˚C, V

CC

= 3.3V

(Figure 6 )

3.5 5.0 7.5 ns

RPLLS Receiver Phase Lock Loop Set

(Figure 7 )

10 ms

RPDD Receiver Power Down Delay

(Figure 10 )

1µs

Note 4: ReceiverSkew Margin is defined as the validdatasampling region at the receiver inputs. Thismargintakes into account the transmitter pulse positions(min
and max) and the receiver input setup and hold time (internal data sampling window - RSPos). This margin allows for LVDS interconnect skew, inter-symbol inter­ference (both dependent on type/length of cable), and clock jitter (less than 250 ps).

AC Timing Diagrams

DS100870-2

FIGURE 1. “Worst Case” Test Pattern

DS90CF384A/DS90CF364A

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AC Timing Diagrams (Continued)

DS100870-12

FIGURE 2. “16 Grayscale” Test Pattern (DS90CF384A)(Notes 5, 6, 7, 8)

DS90CF384A/DS90CF364A

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AC Timing Diagrams (Continued)

Note 5: The worst case test pattern produces a maximum toggling of digital circuits, LVDS I/O and CMOS/TTL I/O.
Note 6: The 16 grayscale test pattern tests device power consumption for a “typical” LCD display pattern. The test pattern approximates signal switching needed

to produce groups of 16 vertical stripes across the display.

Note 7:

Figures 1, 3

show a falling edge data strobe (TxCLK IN/RxCLK OUT).

Note 8: Recommended pin to signal mapping. Customer may choose to define differently.

DS100870-3

FIGURE 3. “16 Grayscale” Test Pattern (DS90CF364A)(Notes 5, 6, 7, 8)

DS100870-4

FIGURE 4. DS90CF384A/DS90CF364A (Receiver) CMOS/TTL Output Load and Transition Times

DS100870-5

FIGURE 5. DS90CF384A/DS90CF364A (Receiver) Setup/Hold and High/Low Times

DS90CF384A/DS90CF364A

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