NSC DS90LV027AQ

DS90LV027AQ
Automotive LVDS Dual Differential Driver
General Description
Features
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 allowing power dissipation to remain low even at high frequency. 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 layout. 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 highspeed point-to-point LVDS interface.
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AECQ-100 Grade 3
>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
© 2008 National Semiconductor Corporation
300640
www.national.com
DS90LV027AQ Automotive LVDS Dual Differential Driver
July 18, 2008
DS90LV027AQ
Lead Temperature Range Soldering
(4 sec.)
Maximum Junction Temperature
ESD Ratings
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
+260°C
+105°C
≥ 8kV
≥ 250V
≥ 1250V
(HBM 1.5 kΩ, 100 pF)
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
497 mW
Derate MA Package
6.2 mW/°C above +25°C
161.0°C/W
Thermal Resistance , θJA
(0 airflow)
50.0°C/W
Thermal Resistance , θJC
(0 airflow)
Storage Temperature Range
−65°C to +150°C
(EIAJ 0 Ω, 200 pF)
(CDM)
Recommended Operating
Conditions
Supply Voltage (VCC)
Temperature (TA)
Min
3.0
−40
Typ
3.3
25
Max
3.6
+85
Units
V
°C
Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (Notes 2, 3, 7)
Symbol
Parameter
Conditions
Pin
Min
Typ
Max
Units
DO+,
DO−
250
360
450
mV
1
35
mV
1.4
1.6
V
DIFFERENTIAL DRIVER CHARACTERISTICS
RL = 100Ω
(Figure 1)
VOD
Output Differential Voltage
ΔVOD
VOD Magnitude Change
VOH
Output High Voltage
VOL
Output Low Voltage
VOS
Offset Voltage
ΔVOS
Offset Magnitude Change
IOXD
Power-off Leakage
IOSD
Output Short Circuit Current
VIH
Input High Voltage
VIL
Input Low Voltage
IIH
Input High Current
VIN = 3.3V or 2.4V
IIL
Input Low Current
VIN = GND or 0.5V
VCL
Input Clamp Voltage
ICL = −18 mA
ICC
Power Supply Current
No Load
0.9
1.1
1.125
1.2
1.375
V
0
3
25
mV
±1
±10
μA
−5.7
−8
mA
2.0
VCC
V
GND
0.8
V
±2
±10
μA
±1
±10
μA
8
14
mA
14
20
mA
Min
Typ
Max
Units
VOUT = VCC or GND, VCC = 0V
DI
−1.5
VIN = VCC or GND
VCC
RL = 100Ω
V
−0.6
V
Switching Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified. (Notes 3, 4, 5, 6)
Symbol
Parameter
Conditions
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 8)
0
0.3
0.7
ns
tSKD2
Channel to Channel Skew (Note 9)
0
0.4
0.8
ns
tSKD3
Differential Part to Part Skew (Note 10)
0
1.0
ns
tSKD4
Differential Part to Part Skew (Note 11)
tTLH
Transition Low to High Time
0.2
tTHL
Transition High to Low Time
0.2
fMAX
Maximum Operating Frequency (Note 12)
0
1.7
ns
0.5
1.0
ns
0.5
1.0
350
ns
MHz
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 devices
should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
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2
Note 3: All typicals are given for: VCC = +3.3V and TA = +25°C.
Note 4: These parameters are guaranteed by design. The limits are based on statistical analysis of the device over PVT (process, voltage, temperature) ranges.
Note 5: CL includes probe and fixture capacitance.
Note 6: Generator waveform for all tests unless otherwise specified: f = 1 MHz, ZO = 50Ω, tr ≤ 1 ns, tf ≤ 1 ns (10%-90%).
Note 7: The DS90LV027AQ is a current mode device and only function with datasheet specification when a resistive load is applied to the drivers outputs.
Note 8: 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 9: tSKD2 is the Differential Channel to Channel Skew of any event on the same device.
Note 10: 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 11: 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 12: 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
3
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DS90LV027AQ
Note 2: 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.
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
Output Low Voltage vs
Power Supply Voltage
30064007
30064008
Output Short Circuit Current vs
Power Supply Voltage
Differential Output Voltage
vs Power Supply Voltage
30064010
30064009
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4
DS90LV027AQ
Differential Output Voltage
vs Load Resistor
Offset Voltage vs
Power Supply Voltage
30064011
30064012
Power Supply Current
vs Frequency
Power Supply Current vs
Power Supply Voltage
30064014
30064013
Power Supply Current vs
Ambient Temperature
Differential Propagation Delay vs
Power Supply Voltage
30064015
30064016
5
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DS90LV027AQ
Differential Propagation Delay vs
Ambient Temperature
Differential Skew vs
Power Supply Voltage
30064018
30064017
Differential Skew vs
Ambient Temperature
Transition Time vs
Power Supply Voltage
30064019
30064020
Transition Time vs
Ambient Temperature
30064021
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6
DS90LV027AQ
Physical Dimensions inches (millimeters) unless otherwise noted
Order Number DS90LV027AQMA
NS Package Number M08A
7
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DS90LV027AQ Automotive LVDS Dual Differential Driver
Notes
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