DS90LV027ATM [NSC]
LVDS Dual High Speed Differential Driver; LVDS双路高速差分驱动器
| 型号： | DS90LV027ATM |
| 厂家： | 
National Semiconductor |
| 描述： | LVDS Dual High Speed Differential Driver |
| 文件： | 总8页 (文件大小：637K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
August 2005
DS90LV027A
LVDS Dual High Speed Differential Driver
General Description
Features
>
n
600 Mbps (300MHz) switching rates
The DS90LV027A 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 DS90LV027A is a current mode driver al-
lowing power dissipation to remain low even at high fre-
quency. In addition, the short circuit fault current is also
minimized.
n 0.3 ns typical differential skew
n 0.7 ns maximum differential skew
n 1.5 ns maximum propagation delay
n 3.3V power supply design
n
360 mV differential signaling
@
n Low power dissipation (46 mW 3.3V static)
n Flow-through design simplifies PCB layout
n Interoperable with existing 5V LVDS devices
n Power Off Protection (outputs in high impedance)
n Conforms to TIA/EIA-644 Standard
n 8-Lead SOIC package saves space
n Industrial temperature operating range
(−40˚C to +85˚C)
The device is in a 8-lead small outline package. The
DS90LV027A 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 DS90LV027A can be
paired with its companion dual line receiver, the
DS90LV028A, or with any of National"s LVDS receivers, to
provide a high-speed point-to-point LVDS interface.
Connection Diagram
Dual-In-Line
10011401
Order Number DS90LV027ATM
See NS Package Number M08A
Functional Diagram
10011402
10011403
© 2005 National Semiconductor Corporation
DS100114
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Absolute Maximum Ratings (Note 1)
ESD Ratings
(HBM 1.5 kΩ, 100 pF)
(EIAJ 0 Ω, 200 pF)
(CDM)
≥ 8kV
≥ 1000V
≥ 1000V
≥ 4kV
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
−0.3V to +3.6V
−0.3V to +3.9V
(IEC direct 330 Ω, 150 pF)
Input Voltage (DI)
Output Voltage (DO )
Recommended Operating
Conditions
@
Maximum Package Power Dissipation +25˚C
M Package
1190 mW
Min
Typ
3.3
25
Max
3.6
Units
V
Derate M Package
9.5 mW/˚C above +25˚C
−65˚C to +150˚C
Supply Voltage (VCC
)
3.0
Storage Temperature Range
Temperature (TA)
−40
+85
˚C
Lead Temperature Range Soldering
(4 sec.)
+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
450
Units
DIFFERENTIAL DRIVER CHARACTERISTICS
VOD
∆VOD
VOH
VOL
VOS
∆VOS
IOXD
IOSD
VIH
Output Differential Voltage
VOD Magnitude Change
Output High Voltage
Output Low Voltage
Offset Voltage
RL = 100Ω
(Figure 1)
DO+,
DO−
250
360
1
mV
mV
V
35
1.4
1.1
1.2
3
1.6
0.9
1.125
0
V
1.375
25
V
Offset Magnitude Change
Power-off Leakage
mV
µA
mA
V
VOUT = VCC or GND, VCC = 0V
1
10
Output Short Circuit Current
Input High Voltage
−5.7
−8
DI
2.0
VCC
0.8
10
VIL
Input Low Voltage
GND
V
IIH
Input High Current
VIN = 3.3V or 2.4V
VIN = GND or 0.5V
ICL = −18 mA
2
1
µA
µA
V
IIL
Input Low Current
10
VCL
ICC
Input Clamp Voltage
Power Supply Current
−1.5
−0.6
8
No Load
VIN = VCC or GND
VCC
14
20
mA
mA
RL = 100Ω
14
Switching Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified. (Notes 3, 4, 5, 6)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DIFFERENTIAL DRIVER CHARACTERISTICS
tPHLD
tPLHD
tSKD1
tSKD2
tSKD3
tSKD4
tTLH
Differential Propagation Delay High to Low
Differential Propagation Delay Low to High
Differential Pulse Skew |tPHLD − tPLHD| (Note 8)
Channel to Channel Skew (Note 9)
Differential Part to Part Skew (Note 10)
Differential Part to Part Skew (Note 11)
Transition Low to High Time
RL = 100Ω, CL = 15 pF
(Figure 2 and Figure 3)
0.3
0.3
0
0.8
1.1
0.3
0.4
1.5
1.5
0.7
0.8
1.0
1.2
1.0
1.0
ns
ns
ns
0
ns
0
ns
0
ns
0.2
0.2
0.5
0.5
350
ns
tTHL
Transition High to Low Time
ns
fMAX
Maximum Operating Frequency (Note 12)
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 V
.
OD
Note 3: All typicals are given for: V
= +3.3V and T = +25˚C.
A
CC
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: C includes probe and fixture capacitance.
L
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2
Switching Characteristics (Continued)
Note 6: Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z = 50Ω, t ≤ 1 ns, t ≤ 1 ns (10%-90%).
O
r
f
Note 7: The DS90LV027A is a current mode device and only function with datasheet specification when a resistive load is applied to the drivers outputs.
Note 8: t , |t − t |, is the magnitude difference in differential propagation delay time between the positive going edge and the negative going edge of
SKD1 PHLD
PLHD
the same channel.
Note 9: t is the Differential Channel to Channel Skew of any event on the same device.
SKD2
Note 10: t
, Differential Part to Part Skew, is defined as the difference between the minimum and maximum specified differential propagation delays. This
SKD3
specification applies to devices at the same V
and within 5˚C of each other within the operating temperature range.
CC
Note 11: t , part to part skew, is the differential channel to channel skew of any event between devices. This specification applies to devices over recommended
SKD4
operating temperature and voltage ranges, and across process distribution. t
is defined as |Max − Min| differential propagation delay.
SKD4
<
>
250mV, all channels
Note 12: f
switching.
generator input conditions: t = t
1 ns (0% to 100%), 50% duty cycle, 0V to 3V. Output criteria: duty cycle = 45%/55%, V
OD
MAX
r
f
Parameter Measurement Information
10011404
FIGURE 1. Differential Driver DC Test Circuit
10011405
FIGURE 2. Differential Driver Propagation Delay and Transition Time Test Circuit
10011406
FIGURE 3. Differential Driver Propagation Delay and Transition Time Waveforms
3
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Application Information
TABLE 1. Device Pin Descriptions
Pin # Name
Description
TTL/CMOS driver input pins
Non-inverting driver output pin
Inverting driver output pin
2, 3
6, 7
5, 8
4
DI
DO+
DO−
GND Ground pin
VCC Positive power supply pin, +3.3V 0.3V
1
Typical Performance Curves
Output High Voltage vs
Power Supply Voltage
Output Low Voltage vs
Power Supply Voltage
10011407
10011408
Output Short Circuit Current vs
Power Supply Voltage
Differential Output Voltage
vs Power Supply Voltage
10011410
10011409
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4
Typical Performance Curves (Continued)
Differential Output Voltage
vs Load Resistor
Offset Voltage vs
Power Supply Voltage
10011411
10011412
Power Supply Current
vs Frequency
Power Supply Current vs
Power Supply Voltage
10011414
10011413
5
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Typical Performance Curves (Continued)
Power Supply Current vs
Ambient Temperature
Differential Propagation Delay vs
Power Supply Voltage
10011415
10011416
Differential Propagation Delay vs
Ambient Temperature
Differential Skew vs
Power Supply Voltage
10011418
10011417
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6
Typical Performance Curves (Continued)
Differential Skew vs
Ambient Temperature
Transition Time vs
Power Supply Voltage
10011419
10011420
Transition Time vs
Ambient Temperature
10011421
7
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Physical Dimensions inches (millimeters) unless otherwise noted
Order Number DS90LV027ATM
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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