DS90LV027
DS90LV027 LVDS Dual High Speed Differential Driver
Literature Number: SNLS003B
DS90LV027
LVDS Dual High Speed Differential Driver
General Description
The DS90LV027 is a dual LVDS driver device optimized for
high data rate and low power applications. The DS90LV027
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 DS90LV027 has a flow-through de-
sign for easy PCB layout. The differential driver outputs
provides low EMI with its low output swings typically 340 mV.
Perfect for high speed transfer of clock and data. Pair with
any of National’s LVDS receivers.
Features
nUltra Low Power Dissipation
nOperating Range above 155 Mbps
nFlow-through pinout simplifies PCB layout
nConforms to TIA/EIA-644 Standard
n8-Lead SOIC Package Saves Space
nV
CM
±1V center around 1.2V
nLow Differential Output Swing Typical 340 mV
nPower Off Protection (outputs in high impedance)
Connection Diagram
Dual-In-Line
10002901
Order Number DS90LV027M
See NS Package Number M08A
Functional Diagram
10002902
10002903
August 2005
DS90LV027 LVDS Dual High Speed Differential Driver
© 2005 National Semiconductor Corporation DS100029 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 +6V
Input Voltage (DI) −0.3V to (V
CC
+ 0.3V)
Output Voltage (DO±) −0.3V to +3.9V
Maximum Package Power Dissipation @+25˚C
M Package 1190 mW
Derate M Package 9.5 mW/˚C above +25˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature Range
Soldering (4 sec.) +260˚C
ESD Rating (Note 4)
(HBM 1.5 kΩ, 100 pF) ≥4.5 kV
Recommended Operating
Conditions
Min Typ Max Units
Supply Voltage (V
CC
) 3.0 3.3 3.6 V
Temperature (T
A
) 0 25 70 ˚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
DIFFERENTIAL DRIVER CHARACTERISTICS
V
OD
Output Differential Voltage R
L
= 100Ω(Figure 1) DO+,
DO−
250 340 450 mV
∆V
OD
V
OD
Magnitude Change 0 10 35 mV
V
OH
Output High Voltage 1.43 1.6 V
V
OL
Output Low Voltage 0.9 1.09 V
V
OS
Offset Voltage 0.9 1.25 1.6 V
∆V
OS
Offset Magnitude Change 0 5 25 mV
I
OZD
TRI-STATE®Leakage V
OUT
=V
CC
or GND 0 ±1±10 µA
I
OXD
Power-off Leakage V
OUT
= 3.6V or GND, V
CC
=0V 0 ±1±10 µA
I
OSD
Output Short Circuit Current −4 −6 mA
V
IH
Input High Voltage DI 2.0 V
CC
V
V
IL
Input Low Voltage GND 0.8 V
I
IH
Input High Current V
IN
= 3.6V or 2.4V ±1±10 µA
I
IL
Input Low Current V
IN
= GND or 0.5V ±1±10 µA
V
CL
Input Clamp Voltage I
CL
= −18 mA −1.5 −0.8 V
I
CC
Power Supply Current No Load V
IN
=V
CC
or GND V
CC
14mA
R
L
= 100Ω811mA
Switching Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified. (Notes 5, 6)
Symbol Parameter Conditions Min Typ Max Units
DIFFERENTIAL DRIVER CHARACTERISTICS
t
PHLD
Differential Propagation Delay High to Low R
L
= 100Ω,C
L
=5pF
(Figure 2 and Figure 3)
1.5 3.4 6 ns
t
PLHD
Differential Propagation Delay Low to High 1.5 3.5 6 ns
t
SKD
Differential Skew |t
PHLD
−t
PLHD
| 0 0.1 1.9 ns
t
TLH
Transition Low to High Time 0 1 3 ns
t
THL
Transition High to Low Time 0 1 3 ns
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: ESD Rating: HBM (1.5 kΩ, 100 pF) ≥4.5 kV
Note 5: CLincludes probe and fixture capacitance.
Note 6: Generator waveform for all tests unless otherwise specified:f=1MHz, ZO=50Ω,t
r≤6 ns, tf≤6 ns (10%-90%).
Note 7: The DS90LV027 is a current mode device and only function with datasheet specification when a resistive load is applied to the drivers outputs.
DS90LV027
www.national.com 2
Parameter Measurement Information
Application Information
Truth Table
Input/Output
DI DO+ DO−
LLH
HHL
DI >0.8V and DI <2.0V X X
H = Logic high level
L = Logic low level
X = indeterminant
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
1V
CC
Positive power supply pin,
+3.3V ±0.3V
10002904
FIGURE 1. Differential Driver DC Test Circuit
10002905
FIGURE 2. Differential Driver Propagation Delay and Transition Time Test Circuit
10002906
FIGURE 3. Differential Driver Propagation Delay and Transition Time Waveforms
DS90LV027
www.national.com3
Physical Dimensions inches (millimeters) unless otherwise noted
Order Number DS90LV027M
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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(b) support or sustain life, and whose failure to perform when
properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to result
in a significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.
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www.national.com
DS90LV027 LVDS Dual High Speed Differential Driver
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