DS90LV027AQMAX/NOPB - NATIONAL SEMICONDUCTOR

DS90LV027AQ

DS90LV027AQ Automotive LVDS Dual Differential Driver

Literature Number: SNLS298C

October 14, 2008

DS90LV027AQ

Automotive LVDS Dual Differential Driver

General Description

The DS90LV027AQ is a dual LVDS driver device optimized

for high data rate and low power applications. The device is

designed to support data rates in excess of 600Mbps

(300MHz) utilizing Low Voltage Differential Signaling (LVDS)

technology. The DS90LV027AQ is a current mode driver al-

lowing power dissipation to remain low even at high frequen-

cy. In addition, the short circuit fault current is also minimized.

The device is in a 8-lead small outline package. The

DS90LV027AQ has a flow-through design for easy PCB lay-

out. The differential driver outputs provides low EMI with its

typical low output swing of 360 mV. It is perfect for high speed

transfer of clock and data. The DS90LV027AQ can be paired

with its companion dual line receiver, the DS90LV028AQ, or

with any of National's LVDS receivers, to provide a high-

speed point-to-point LVDS interface.

Features

■AECQ-100 Grade 1

■>600 Mbps (300MHz) switching rates

■0.3 ns typical differential skew

■0.7 ns maximum differential skew

■3.3V power supply design

■Low power dissipation (46 mW @ 3.3V static)

■Flow-through design simplifies PCB layout

■Power Off Protection (outputs in high impedance)

■Conforms to TIA/EIA-644 Standard

■8-Lead SOIC package saves space

Connection Diagram

Dual-In-Line

30064001

Order Number DS90LV027AQMA

See NS Package Number M08A

Functional Diagram

30064002

30064003

DS90LV027AQ Automotive LVDS Dual Differential Driver

Absolute Maximum Ratings (Note 4)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage (VCC)−0.3V to +4V

Input Voltage (DI) −0.3V to (VCC + 0.3V)

Output Voltage (DO±) −0.3V to +3.9V

Maximum Package Power Dissipation @ +25°C

MA Package 1068 mW

Derate MA Package 9.71 mW/°C above +25°C

Package Thermal Resistance (4-Layer, 2 oz. Cu, JEDEC)

θJA 103.0°C/W

θJC 50.0°C/W

Storage Temperature Range −65°C to +150°C

Lead Temperature Range Soldering

(4 sec.) +260°C

Maximum Junction Temperature +135°C

ESD Ratings

HBM (Note 1) ≥ 8kV

MM (Note 2) ≥ 250V

CDM (Note 3) ≥ 1250V

Note 1: Human Body Model, applicable std. JESD22-A114C

Note 2: Machine Model, applicable std. JESD22-A115-A

Note 3: Field Induced Charge Device Model, applicable std.

JESD22-C101-C

Recommended Operating

Conditions

Min Typ Max Units

Supply Voltage (VCC) 3.0 3.3 3.6 V

Temperature (TA) −40 25 +125 °C

Electrical Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (Notes 5, 6, 10)

Symbol Parameter Conditions Pin Min Typ Max Units

DIFFERENTIAL DRIVER CHARACTERISTICS

VOD Output Differential Voltage RL = 100Ω

(Figure 1)

DO+,

DO−

250 360 450 mV

ΔVOD VOD Magnitude Change 1 35 mV

VOH Output High Voltage 1.4 1.6 V

VOL Output Low Voltage 0.9 1.1 V

VOS Offset Voltage 1.125 1.2 1.375 V

ΔVOS Offset Magnitude Change 0 3 25 mV

IOXD Power-off Leakage VOUT = VCC or GND, VCC = 0V ±1 ±10 μA

IOSD Output Short Circuit Current −5.7 −8 mA

VIH Input High Voltage DI 2.0 VCC V

VIL Input Low Voltage GND 0.8 V

IIH Input High Current VIN = 3.3V or 2.4V ±2 ±10 μA

IIL Input Low Current VIN = GND or 0.5V ±1 ±10 μA

VCL Input Clamp Voltage ICL = −18 mA −1.5 −0.6 V

ICC Power Supply Current No Load VIN = VCC or GND VCC 8 14 mA

RL = 100Ω 14 20 mA

Switching Characteristics

Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified. (Notes 6, 7, 8, 9)

Symbol Parameter Conditions Min Typ Max Units

DIFFERENTIAL DRIVER CHARACTERISTICS

tPHLD Differential Propagation Delay High to Low RL = 100Ω, CL = 15 pF 0.3 0.8 2.0 ns

tPLHD Differential Propagation Delay Low to High (Figure 2 and Figure 3)0.3 1.1 2.0 ns

tSKD1 Differential Pulse Skew |tPHLD − tPLHD| (Note 11) 0 0.3 0.7 ns

tSKD2 Channel to Channel Skew (Note 12) 0 0.4 0.8 ns

tSKD3 Differential Part to Part Skew (Note 13) 0 1.0 ns

tSKD4 Differential Part to Part Skew (Note 14) 0 1.7 ns

tTLH Transition Low to High Time 0.2 0.5 1.0 ns

tTHL Transition High to Low Time 0.2 0.5 1.0 ns

fMAX Maximum Operating Frequency (Note 15) 350 MHz

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DS90LV027AQ

Note 4: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices

should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.

Note 5: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except VOD.

Note 6: All typicals are given for: VCC = +3.3V and TA = +25°C.

Note 7: These parameters are guaranteed by design. The limits are based on statistical analysis of the device over PVT (process, voltage, temperature) ranges.

Note 8: CL includes probe and fixture capacitance.

Note 9: Generator waveform for all tests unless otherwise specified: f = 1 MHz, ZO = 50Ω, tr ≤ 1 ns, tf ≤ 1 ns (10%-90%).

Note 10: The DS90LV027AQ is a current mode device and only function with datasheet specification when a resistive load is applied to the drivers outputs.

Note 11: tSKD1, |tPHLD − tPLHD|, is the magnitude difference in differential propagation delay time between the positive going edge and the negative going edge of

the same channel.

Note 12: tSKD2 is the Differential Channel to Channel Skew of any event on the same device.

Note 13: tSKD3, Differential Part to Part Skew, is defined as the difference between the minimum and maximum specified differential propagation delays. This

specification applies to devices at the same VCC and within 5°C of each other within the operating temperature range.

Note 14: tSKD4, part to part skew, is the differential channel to channel skew of any event between devices. This specification applies to devices over recommended

operating temperature and voltage ranges, and across process distribution. tSKD4 is defined as |Max − Min| differential propagation delay.

Note 15: fMAX generator input conditions: tr = tf < 1 ns (0% to 100%), 50% duty cycle, 0V to 3V. Output criteria: duty cycle = 45%/55%, VOD > 250mV, all channels

switching.

Parameter Measurement Information

30064004

FIGURE 1. Differential Driver DC Test Circuit

30064005

FIGURE 2. Differential Driver Propagation Delay and Transition Time Test Circuit

30064006

FIGURE 3. Differential Driver Propagation Delay and Transition Time Waveforms

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DS90LV027AQ

Application Information

TABLE 1. Device Pin Descriptions

Pin # Name Description

2, 3 DI TTL/CMOS driver input pins

6, 7 DO+ Non-inverting driver output pin

5, 8 DO− Inverting driver output pin

4 GND Ground pin

1 VCC Positive power supply pin, +3.3V ± 0.3V

Typical Performance Curves

Output High Voltage vs

Power Supply Voltage

30064007

Output Low Voltage vs

Power Supply Voltage

30064008

Output Short Circuit Current vs

Power Supply Voltage

30064009

Differential Output Voltage

vs Power Supply Voltage

30064010

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DS90LV027AQ

Differential Output Voltage

vs Load Resistor

30064011

Offset Voltage vs

Power Supply Voltage

30064012

Power Supply Current

vs Frequency

30064013

Power Supply Current vs

Power Supply Voltage

30064014

Power Supply Current vs

Ambient Temperature

30064015

Differential Propagation Delay vs

Power Supply Voltage

30064016

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DS90LV027AQ

Differential Propagation Delay vs

Ambient Temperature

30064017

Differential Skew vs

Power Supply Voltage

30064018

Differential Skew vs

Ambient Temperature

30064019

Transition Time vs

Power Supply Voltage

30064020

Transition Time vs

Ambient Temperature

30064021

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DS90LV027AQ

Physical Dimensions inches (millimeters) unless otherwise noted

Order Number DS90LV027AQMA

NS Package Number M08A

7 www.national.com

DS90LV027AQ

Notes

DS90LV027AQ Automotive LVDS Dual Differential Driver

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