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December 2002
s
>400 MBPS (200MHZ) SWITCHING RATES
s
FLOW-THROUGH PINOUT SIMPLIFIES PCB
LAYOUT
s
300ps (MAX.) DIFFERENTIAL SKEW
s
1.8 ns (TYP.) PROPAGATION DELAY
s
3.3V POWER SUPPLY DESIGN
s
±350 mV DIFFERENTIAL SIGNALING
s
LOW POWER DISSIPATION (3.5mW AT 3.3V
STATIC IN TRISTATE)
s
INTEROPERABLE WITH EXISTING 5V LVDS
RECEIVERS
s
HIGH IMPEDANCE ON LVDS OUTPUT ON
POWER DOWN
s
CONFORMS TO TIA/EIA-644 LVDS
STANDARD
s
INDUSTRIAL OPERATING TEMPERATURE
RANGE (-40 °C TO +85 °C)
s
AVAILABLE IN SURFACE MOUNT (SOIC)
AND LOW PROFILE TSSOP PACKAGE
DESCRIPTION
The STLVDS47 is a quad CMOS flow-through
differential line driver designed for applications
requiring ultra low power dissipation and high data
rate. The device is designed to support data rates
in excess of 400Mbps (200 MHz) utilizing Low
Voltage Differential Signaling (LVDS) techology.
The STLVDS47 accepts low voltage TTL/CMOS
input levels and translates them to low voltage
(350 mV) differential output signals. In addition,
the driver support a TRI-STATE function that may
be used to disable the output stage, disabling the
load current, and thus dropping the device to an
ultra low idle power state of 1.3mW typical. The
STLVDS47 has a flow-through pinout for easy
PCB layout.
The EN and EN* inputs are ANDed together and
control the TRI-STATE output.
The STLVDS47 and companion line receiver
(STLVDS48) provide a new alternative to high
power
pseudo-ECL
devices
for
high-speed
point-to-point interface applications.
ORDERING CODES
Type
Temperature
Range
Package
Comments
STLVDS47BD
-40 to 85 °C
SO-16 (Tube)
50 parts per tube / 20 tube per box
STLVDS47BDR
-40 to 85 °C
SO-16 (Tape & Reel)
2500 parts per reel
STLVDS47BTR
-40 to 85 °C
TSSOP-16 (Tape & Reel)
2500 parts per reel
STLVDS47
3V LVDS QUAD CMOS DIFFERENTIAL LINE DRIVER
SO-16
TSSOP
STLVDS47
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PIN CONFIGURATION
PIN DESCRIPTION
PlN N°
SYMBOL
NAME AND FUNCTION
1
EN
Enable
2
D
IN1
First Driver Input
3
D
IN2
Second Driver Input
4
V
CC
Supply Voltage
5
GND
GROUND
6
D
IN3
Third Driver Input
7
D
IN4
Fourth Driver Input
8
EN*
Enable (inverting)
9
D
OUT4-
Fourth Driver Inverting Output
10
D
OUT4+
Fourth Driver non-Inverting Output
11
D
OUT3+
Third Driver non-Inverting Output
12
D
OUT3-
Third Driver Inverting Output
13
D
OUT2-
Second Driver Inverting Output
14
D
OUT2+
Second Driver non-Inverting Output
15
D
OUT1+
First Driver non-Inverting Output
16
D
OUT1-
First Driver Inverting Output
STLVDS47
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FUNCTIONAL DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.3 to 4
V
D
IN
Input Voltage
-0.3 to 6
V
EN, EN*
Enable Input Voltage
-0.3 to 6
V
D
OUT+,
D
OUT-
Output Voltage
-0.3 to 3.9
V
I
SCTOUT
Short Circuit Duration
Continuous
T
stg
Storage Temperature Range
-65 to +150
°C
Symbol
Parameter
Min
TYP
Max
Unit
V
CC
Supply Voltage
3
3.3
3.6
V
V
IH
High-Level Input Voltage
2
V
V
IL
Low-Level Input Voltage
0.8
V
T
A
Operating Free-Air Temperature
-40
85
°C
STLVDS47
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ELECTRICAL CHARACTERISTICS (Typical values are at T
A
= 25°C, V
CC
= 3.3V ± 10%,
T
A
= -40 to 85 °C, unless otherwise specified). (Note 1, 2)
NOTE 1: Current into device pins is defined as positive. Current out of device pins as negative. All voltage are reference to ground except:
V
OD1
and
V
OD1
.
NOTE 2: The STLVDS47 is a current mode device and only functions within datasheet specifications when a resostive load is applied to the
driver outputs typical range is (90
to 110
).
NOTE 3: Output short circuit current (I
OS
) is specified as magnitude only, minus sign indicates direction only.
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
V
OD1
Differential Output Voltage
R
L
= 100
247
350
454
mV
V
OD1
Change in Magnitude of V
OD1
for
Complementary Output States
-35
35
|mV|
V
OC
Offset Voltage
1.125
1.2
1.375
V
V
OC
Change in Magnitude of V
OS
for
Complementary Output States
-25
25
|mV|
I
IH
Input High Current
V
IN
= 2V
20
µA
I
IL
Input Low Current
V
IN
= 0.8V
10
µA
I
OS
Output Short Circuit Current
(Note 3)
ENABLED,
D
IN
= V
CC
,
D
OUT+
= 0V or D
IN
= GND,
D
OUT-
= 0V
6
10
mA
I
OSD
Differential Output Short Circuit
(Note 3)
ENABLED, V
OD
= 0V
3
10
mA
I
OFF
Power-off Leakage
V
OUT
= 0V or 3.6V,
V
CC
= 0V or Open
±1
µA
I
OZ
Output TRI-STATE Current
EN = 0.8V and EN* = 2V
V
OUT
= 0V or V
CC
±1
µA
I
CCL
Loaded Supply Current Drivers
Enabled
R
L
= 100
All Channels,
D
IN =
V
CC
or GND (all inputs)
18
26
mA
I
CCZ
No Load Supply Current Drivers
Disabled
D
IN =
V
CC
or GND,
EN = GND, EN* = V
CC
0.4
1
mA
STLVDS47
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SWITCHING CHARACTERISTICS (Typical values are at T
A
= 25°C, V
CC
= 3.3V ± 10%,
T
A
= -40 to 85 °C, unless otherwise specified). (Note 1, 2)
NOTE 1: C
L
includes probe and jig capacitance.
NOTE 2: t
SK(o)
is the magnitude of the time difference between the t
PLH
or t
PHL
of all drivers of a single device with all of their inputs connected
together.
NOTE 3: t
SK(pp)
is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both de-
vices operate with same supply voltage, at the same temperature, and have identical packages and test circuits.
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
t
PLH
Propagation Delay Time Low-to-
High-Level output
R
L
= 100
,
C
L
= 5 pF
1.6
1.8
2.7
ns
t
PHL
Propagation Delay Time High-to-
Low-Level output
1.6
1.8
2.7
ns
t
r
Differential Output signal rise time
0.5
1
ns
t
f
Differential Output signal fall time
0.5
1
ns
t
SK(p)
Pulse Skew (|t
PHL
- t
PLH
|)
100
300
ps
t
SK(o)
Channel-to-Channel Output Skew
(Note 1)
100
300
ps
t
SK(pp)
Part-to-Part Skew (Note 2)
1
ns
t
PZH
Propagation Delay Time, high-
impedance-to-high-level output
5.4
10
ns
t
PZL
Propagation Delay Time, high-
impedance-to-low-level output
7.4
12
ns
t
PHZ
Propagation Delay Time, high-
level-to-high-impedance output
3.5
6
ns
t
PLZ
Propagation Delay Time, low-
level-to-high-impedance output
3.9
6
ns
f
MAX
Maximum Operating Frequency
250
MHz
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