NSC DS90LV027AHM

DS90LV027AH
High Temperature LVDS Dual Differential Driver
General Description
Features
The DS90LV027AH 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 DS90LV027AH 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
DS90LV027AH 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 DS90LV027AH can be
paired with its companion dual line receiver, the
DS90LV028AH, or with any of National’s LVDS receivers, to
provide a high-speed point-to-point LVDS interface.
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−40˚C to +125˚C operating temperature range
> 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
20165101
Order Number DS90LV027AHM
See NS Package Number M08A
Functional Diagram
20165102
20165103
© 2005 National Semiconductor Corporation
DS201651
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DS90LV027AH High Temperature LVDS Dual Differential Driver
September 2005
DS90LV027AH
Absolute Maximum Ratings (Note 1)
ESD Ratings
Supply Voltage (VCC)
−0.3V to +4V
Input Voltage (DI)
−0.3V to +3.6V
Output Voltage (DO ± )
−0.3V to +3.9V
≥ 1000V
(CDM)
≥ 1000V
Min
Typ
Max
Supply Voltage (VCC)
3.0
3.3
3.6
V
Temperature (TA)
−40
25
+125
˚C
9.5 mW/˚C above +25˚C
Storage Temperature Range
−65˚C to +150˚C
Lead Temperature Range Soldering
(4 sec.)
≥ 4kV
Recommended Operating
Conditions
1190 mW
Derate M Package
(EIAJ 0 Ω, 200 pF)
(IEC direct 330 Ω, 150 pF)
Maximum Package Power Dissipation @ +25˚C
M Package
≥ 8kV
(HBM 1.5 kΩ, 100 pF)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Units
+260˚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
DIFFERENTIAL DRIVER CHARACTERISTICS
VOD
Output Differential Voltage
∆VOD
VOD Magnitude Change
RL = 100Ω
(Figure 1)
VOH
Output High Voltage
VOL
Output Low Voltage
VOS
Offset Voltage
∆VOS
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
0
VOUT = VCC or GND, VCC = 0V
DI
V
mV
3
25
± 10
µA
−5.7
−8
mA
VCC
V
2.0
0.8
V
± 10
± 10
µA
8
14
mA
14
20
mA
±2
±1
−1.5
1.375
±1
GND
VIN = VCC or GND
V
V
µA
−0.6
VCC
RL = 100Ω
V
Switching Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified. (Notes 3, 4, 5, 6)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
ns
DIFFERENTIAL DRIVER CHARACTERISTICS
tPHLD
Differential Propagation Delay High to Low
RL = 100Ω, CL = 15 pF
0.3
0.8
2.0
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
0.4
tSKD2
Channel to Channel Skew (Note 9)
0
0.8
ns
tSKD3
Differential Part to Part Skew (Note 10)
0
1.0
ns
tSKD4
Differential Part to Part Skew (Note 11)
0
1.2
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
fMAX
Maximum Operating Frequency (Note 12)
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.
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.
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.
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2
(Continued)
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 DS90LV027AH 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
20165104
FIGURE 1. Differential Driver DC Test Circuit
20165105
FIGURE 2. Differential Driver Propagation Delay and Transition Time Test Circuit
20165106
FIGURE 3. Differential Driver Propagation Delay and Transition Time Waveforms
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DS90LV027AH
Switching Characteristics
DS90LV027AH
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
20165107
20165108
Output Short Circuit Current vs
Power Supply Voltage
Differential Output Voltage
vs Power Supply Voltage
20165110
20165109
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4
DS90LV027AH
Typical Performance Curves
(Continued)
Differential Output Voltage
vs Load Resistor
Offset Voltage vs
Power Supply Voltage
20165111
20165112
Power Supply Current
vs Frequency
Power Supply Current vs
Power Supply Voltage
20165114
20165113
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DS90LV027AH
Typical Performance Curves
(Continued)
Power Supply Current vs
Ambient Temperature
Differential Propagation Delay vs
Power Supply Voltage
20165115
20165116
Differential Propagation Delay vs
Ambient Temperature
Differential Skew vs
Power Supply Voltage
20165118
20165117
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DS90LV027AH
Typical Performance Curves
(Continued)
Differential Skew vs
Ambient Temperature
Transition Time vs
Power Supply Voltage
20165119
20165120
Transition Time vs
Ambient Temperature
20165121
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DS90LV027AH High Temperature LVDS Dual Differential Driver
Physical Dimensions
inches (millimeters) unless otherwise noted
Order Number DS90LV027AHM
NS Package Number M08A
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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