DS92LV010A
Bus LVDS 3.3/5.0V Single Transceiver
General Description
The DS92LV010A is one in a series of transceivers designed
specifically for the high speed, low power proprietary bus
backplane interfaces. The device operates from a single
3.3V or 5.0V power supply and includes one differential line
driver and one receiver. To minimize bus loading the driver
outputs and receiver inputs are internally connected. The
logic interface provides maximum flexibility as 4 separate
lines are provided (DIN, DE, RE, and ROUT). The device
also features flow through which allows easy PCB routing for
short stubs between the bus pins and the connector. The
driver has 10 mA drive capability, allowing it to drive heavily
loaded backplanes, with impedance as low as 27 Ohms.
The driver translates between TTL levels (single-ended) to
Low Voltage Differential Signaling levels. This allows for high
speed operation, while consuming minimal power with re-
duced EMI. In addition the differential signaling provides
common mode noise rejection of
1V.
The receiver threshold is
100mV over a
1V common
mode range and translates the low voltage differential levels
to standard (CMOS/TTL) levels.
Features
n
Bus LVDS Signaling (BLVDS)
n
Designed for Double Termination Applications
n
Balanced Output Impedance
n
Lite Bus Loading 5pF typical
n
Glitch free power up/down (Driver disabled)
n
3.3V or 5.0V Operation
n
1V Common Mode Range
n
100mV Receiver Sensitivity
n
High Signaling Rate Capability (above 100 Mbps)
n
Low Power CMOS design
n
Product offered in 8 lead SOIC package
n
Industrial Temperature Range Operation
Connection Diagram
Block Diagram
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
DS100052-1
Order Number DS92LV010ATM
See NS Package Number M08A
DS100052-2
May 1998
DS92L
V010A
Bus
L
VDS
3.3/5.0V
Single
T
ransceiver
1998 National Semiconductor Corporation
DS100052
www.national.com
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC
)
6.0V
Enable Input Voltage (DE,
RE)
-0.3V to (V
CC
+
0.3V)
Driver Input Voltage (DIN)
-0.3V to (V
CC
+
0.3V)
Receiver Output Voltage
(R
OUT
)
-0.3V to (V
CC
+
0.3V)
Bus Pin Voltage (DO/RI
)
-0.3V to + 3.9V
Driver Short Circuit
Current
Continuous
ESD (HBM 1.5 k
, 100
pF)
>
2.0 kV
Maximum Package Power Dissipation at 25C
SOIC
1025 mW
Derate SOIC Package
8.2 mW/C
Storage Temperature
Range
-65C to +150C
Lead Temperature
(Soldering, 4 sec.)
260C
Recommended Operating
Conditions
Min
Max Units
Supply Voltage (V
CC
), or
3.0
3.6
V
Supply Voltage (V
CC
)
4.5
5.5
V
Receiver Input Voltage
0.0
2.9
V
Operating Free Air
Temperature
-40
+85
C
DC Electrical Characteristics
(Notes 2, 3)
T
A
= -40C to +85C unless otherwise noted, V
CC
= 3.3V
0.3V
Symbol
Parameter
Conditions
Pin
Min
Typ
Max
Units
V
OD
Output Differential
Voltage
R
L
= 27
,
Figure 1
DO+/RI+,
DO-/RI-
140
250
360
mV
V
OD
V
OD
Magnitude Change
3
30
mV
V
OS
Offset Voltage
1
1.25
1.65
V
V
OS
Offset Magnitude
Change
5
50
mV
I
OSD
Output Short Circuit
Current
V
O
= 0V, DE = V
CC
-12
-20
mA
V
OH
Voltage Output High
V
ID
= +100 mV
I
OH
= -400 A
R
OUT
2.8
3
V
Inputs Open
2.8
3
V
Inputs Shorted
2.8
3
V
Inputs Terminated,
R
L
= 27
2.8
3
V
V
OL
Voltage Output Low
I
OL
= 2.0 mA, V
ID
= -100 mV
0.1
0.4
V
I
OS
Output Short Circuit
Current
V
OUT
= 0V, V
ID
= +100 mV
-5
-35
-85
mA
V
TH
Input Threshold High
DE = 0V
DO+/RI+,
DO-/RI-
+100
mV
V
TL
Input Threshold Low
-100
mV
I
IN
Input Current
DE = 0V, V
IN
= +2.4V, or 0V
-20
1
+20
A
V
CC
= 0V, V
IN
= +2.4V, or 0V
-20
1
+20
A
V
IH
Minimum Input High
Voltage
DIN, DE,
RE
2.0
V
CC
V
V
IL
Maximum Input Low
Voltage
GND
0.8
V
I
IH
Input High Current
V
IN
= V
CC
or 2.4V
1
10
A
I
IL
Input Low Current
V
IN
= GND or 0.4V
1
10
A
V
CL
Input Diode Clamp
Voltage
I
CLAMP
= -18 mA
-1.5
-0.8
V
I
CCD
Power Supply Current
DE = RE = V
CC
, R
L
= 27
V
CC
13
20
mA
I
CCR
DE = RE = 0V
5
8
mA
I
CCZ
DE = 0V, RE = V
CC
3
7.5
mA
I
CC
DE = V
CC
, RE = 0V, R
L
= 27
16
22
mA
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2
DC Electrical Characteristics
(Notes 2, 3) (Continued)
T
A
= -40C to +85C unless otherwise noted, V
CC
= 3.3V
0.3V
Symbol
Parameter
Conditions
Pin
Min
Typ
Max
Units
C
output
Capacitance
@
BUS
Pins
DO+/RI+,
DO-/RI-
5
pF
DC Electrical Characteristics
(Notes 2, 3)
T
A
= -40C to +85C unless otherwise noted, V
CC
= 5.0V
0.5V
Symbol
Parameter
Conditions
Pin
Min
Typ
Max
Units
V
OD
Output Differential
Voltage
R
L
= 27
,
Figure 1
DO+/RI+,
DO-/RI-
145
270
390
mV
V
OD
V
OD
Magnitude Change
3
30
mV
V
OS
Offset Voltage
1
1.35
1.65
V
V
OS
Offset Magnitude
Change
5
50
mV
I
OSD
Output Short Circuit
Current
V
O
= 0V, DE = V
CC
-12
-20
mA
V
OH
Voltage Output High
V
ID
= +100 mV
I
OH
= -400 A
R
OUT
4.3
5.0
V
Inputs Open
4.3
5.0
V
Inputs Shorted
4.3
5.0
V
Inputs
Terminated, R
L
= 27
4.3
5.0
V
V
OL
Voltage Output Low
I
OL
= 2.0 mA, V
ID
= -100 mV
0.1
0.4
V
I
OS
Output Short Circuit
Current
V
OUT
= 0V, V
ID
= +100 mV
-35
-90
-130
mA
V
TH
Input Threshold High
DE = 0V
DO+/RI+,
DO-/RI-
+100
mV
V
TL
Input Threshold Low
-100
mV
I
IN
Input Current
DE = 0V, V
IN
= +2.4V, or 0V
-20
1
+20
A
V
CC
= 0V, V
IN
= +2.4V, or 0V
-20
1
+20
A
V
IH
Minimum Input High
Voltage
DIN,
DE,
RE
2.0
V
CC
V
V
IL
Maximum Input Low
Voltage
GND
0.8
V
I
IH
Input High Current
V
IN
= V
CC
or 2.4V
1
10
A
I
IL
Input Low Current
V
IN
= GND or 0.4V
1
10
A
V
CL
Input Diode Clamp
Voltage
I
CLAMP
= -18 mA
-1.5
-0.8
V
I
CCD
Power Supply Current
DE = RE = V
CC
, R
L
= 27
V
CC
17
25
mA
I
CCR
DE = RE = 0V
6
10
mA
I
CCZ
DE = 0V, RE = V
CC
3
8
mA
I
CC
DE = V
CC
, RE = 0V, R
L
= 27
20
25
mA
C
output
Capacitance
@
BUS
Pins
DO+/RI+,
DO-/RI-
5
pF
Note 1: "Absolute Maximum Ratings" are these beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device should
be operated at these limits. The table of "Electrical Characteristics" provides conditions for actual device operation.
Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground except V
OD
, V
ID
, V
TH
and
V
TL
unless otherwise specified.
Note 3: All typicals are given for V
CC
= +3.3V or 5.0 V and T
A
= +25C, unless otherwise stated.
Note 4: ESD Rating: HBM (1.5 k
, 100 pF)
>
2.0 kV EAT (0
, 200 pF)
>
300V.
Note 5: C
L
includes probe and fixture capacitance.
Note 6: Generator waveforms for all tests unless otherwise specified: f = 1MHz, ZO = 50
, tr, tf
6.0ns (0%100%) on control pins and
1.0ns for RI inputs.
Note 7: The DS92LV010A is a current mode device and only function with datasheet specification when a resistive load is applied between the driver outputs.
Note 8: For receiver TRI-STATE
delays, the switch is set to V
CC
for t
PZL
, and t
PLZ
and to GND for t
PZH
, and t
PHZ
.
www.national.com
3
AC Electrical Characteristics
(Note 6)
T
A
= -40C to +85C, V
CC
= 3.3V
0.3V
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DIFFERENTIAL DRIVER TIMING REQUIREMENTS
t
PHLD
Differential Prop. Delay High to
Low
R
L
= 27
,
Figures 2, 3
C
L
= 10 pF
1.0
3.0
5.0
ns
t
PLHD
Differential Prop. Delay Low to
High
1.0
2.8
5.0
ns
t
SKD
Differential SKEW |t
PHLD
- t
PLHD
|
0.2
1.0
ns
t
TLH
Transition Time Low to High
0.3
2.0
ns
t
THL
Transition Time High to Low
0.3
2.0
ns
t
PHZ
Disable Time High to Z
R
L
= 27
,
Figures 4, 5
C
L
= 10 pF
0.5
4.5
9.0
ns
t
PLZ
Disable Time Low to Z
0.5
5.0
10.0
ns
t
PZH
Enable Time Z to High
2.0
5.0
7.0
ns
t
PZL
Enable Time Z to Low
1.0
4.5
9.0
ns
DIFFERENTIAL RECEIVER TIMING REQUIREMENTS
t
PHLD
Differential Prop. Delay High to
Low
Figures 6, 7
C
L
= 10 pF
2.5
5.0
12.0
ns
t
PLHD
Differential Prop. Delay Low to
High
2.5
5.5
10.0
ns
t
SKD
Differential SKEW |t
PHLD
- t
PLHD
|
0.5
2.0
ns
t
r
Rise Time
1.5
4.0
ns
t
f
Fall Time
1.5
4.0
ns
t
PHZ
Disable Time High to Z
R
L
= 500
,
Figures 8, 9
C
L
= 10 pF (Note 8)
2.0
4.0
6.0
ns
t
PLZ
Disable Time Low to Z
2.0
5.0
7.0
ns
t
PZH
Enable Time Z to High
2.0
7.0
13.0
ns
t
PZL
Enable Time Z to Low
2.0
6.0
10.0
ns
AC Electrical Characteristics
(Note 6)
T
A
= -40C to +85C, V
CC
= 5.0V
0.5V
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DIFFERENTIAL DRIVER TIMING REQUIREMENTS
t
PHLD
Differential Prop. Delay High to
Low
R
L
= 27
,
Figures 2, 3
C
L
= 10 pF
0.5
2.7
4.5
ns
t
PLHD
Differential Prop. Delay Low to
High
0.5
2.5
4.5
ns
t
SKD
Differential SKEW |t
PHLD
- t
PLHD
|
0.2
1.0
ns
t
TLH
Transition Time Low to High
0.3
2.0
ns
t
THL
Transition Time High to Low
0.3
2.0
ns
t
PHZ
Disable Time High to Z
R
L
= 27
,
Figures 4, 5
C
L
= 10 pF
0.5
3.0
7.0
ns
t
PLZ
Disable Time Low to Z
0.5
5.0
10.0
ns
t
PZH
Enable Time Z to High
2.0
4.0
7.0
ns
t
PZL
Enable Time Z to Low
1.0
4.0
9.0
ns
DIFFERENTIAL RECEIVER TIMING REQUIREMENTS
t
PHLD
Differential Prop. Delay High to
Low
Figures 6, 7
C
L
= 10 pF
2.5
5.0
12.0
ns
t
PLHD
Differential Prop. Delay Low to
High
2.5
4.6
10.0
ns
t
SKD
Differential SKEW |t
PHLD
- t
PLHD
|
0.4
2.0
ns
t
r
Rise Time
1.2
2.5
ns
t
f
Fall Time
1.2
2.5
ns
www.national.com
4
AC Electrical Characteristics
(Note 6) (Continued)
T
A
= -40C to +85C, V
CC
= 5.0V
0.5V
Symbol
Parameter
Conditions
Min
Typ
Max
Units
DIFFERENTIAL RECEIVER TIMING REQUIREMENTS
t
PHZ
Disable Time High to Z
R
L
= 500
,
Figures 8, 9
C
L
= 10 pF (Note 8)
2.0
4.0
6.0
ns
t
PLZ
Disable Time Low to Z
2.0
4.0
6.0
ns
t
PZH
Enable Time Z to High
2.0
5.0
9.0
ns
t
PZL
Enable Time Z to Low
2.0
5.0
7.0
ns
Test Circuits and Timing Waveforms
DS100052-3
FIGURE 1. Differential Driver DC Test Circuit
DS100052-4
FIGURE 2. Differential Driver Propagation Delay and Transition Time Test Circuit
DS100052-5
FIGURE 3. Differential Driver Propagation Delay and Transition Time Waveforms
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5
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