DS90C031
LVDS Quad CMOS Differential Line Driver
General Description
The DS90C031 is a quad CMOS differential line driver de-
signed for applications requiring ultra low power dissipation
and high data rates. The device is designed to support data
rates in excess of 155.5 Mbps (77.7 MHz) utilizing Low Volt-
age Differential Signaling (LVDS) technology.
The DS90C031 accepts TTL/CMOS input levels and trans-
lates them to low voltage (350 mV) differential output sig-
nals. In addition the driver supports 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 11 mW typical.
The DS90C031 and companion line receiver (DS90C032)
provide a new alternative to high power psuedo-ECL devices
for high speed point-to-point interface applications.
Features
n
>
155.5 Mbps (77.7 MHz) switching rates
n
350 mV differential signaling
n
Ultra low power dissipation
n
400 ps maximum differential skew (5V, 25C)
n
3.5 ns maximum propagation delay
n
Industrial operating temperature range
n
Military operating temperature range option
n
Available in surface mount packaging (SOIC) and (LCC)
n
Pin compatible with DS26C31, MB571 (PECL) and
41LG (PECL)
n
Compatible with IEEE 1596.3 SCI LVDS standard
n
Conforms to ANSI/TIA/EIA-644 LVDS standard
n
Available to Standard Microcircuit Drawing (SMD)
5962-95833
Connection Diagrams
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
Dual-In-Line
DS011946-1
Order Number DS90C031TM
See NS Package Number M16A
LCC Package
DS011946-33
Order Number DS90C031E-QML
See NS Package Number E20A
For Complete Military Specifications,
refer to appropriate SMD or MDS.
June 1998
DS90C031
L
VDS
Quad
CMOS
Differential
Line
Driver
1998 National Semiconductor Corporation
DS011946
www.national.com
Functional Diagram
Truth Table
DRIVER
Enables
Input
Outputs
EN
EN*
D
IN
D
OUT+
D
OUT-
L
H
X
Z
Z
All other combinations
L
L
H
of ENABLE inputs
H
H
L
DS011946-2
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2
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 (D
IN
)
-0.3V to (V
CC
+ 0.3V)
Enable Input Voltage (EN, EN*)
-0.3V to (V
CC
+ 0.3V)
Output Voltage (D
OUT+
, D
OUT-
)
-0.3V to (V
CC
+ 0.3V)
Short Circuit Duration
(D
OUT+
, D
OUT-
)
Continuous
Maximum Package Power Dissipation
@
+25C
M Package
1068 mW
E Package
1900 mW
Derate M Package
8.5 mW/C above +25C
Derate E Package
12.8 mW/C above +25C
Storage Temperature Range
-65C to +150C
Lead Temperature Range
Soldering (4 sec.)
+260C
Maximum Junction Temperature
(DS90C031T)
+150C
Maximum Junction Temperature
(DS90C031E)
+175C
ESD Rating (Note 7)
(HBM, 1.5 k
, 100 pF)
3,500V
(EIAJ, 0
, 200 pF)
250V
Recommended Operating
Conditions
Min
Typ
Max
Units
Supply Voltage (V
CC
)
+4.5
+5.0
+5.5
V
Operating Free Air Temperature (T
A
)
DS90C031T
-40
+25
+85
C
DS90C031E
-55
+25
+125
C
Electrical Characteristics
Over supply voltage and operating temperature ranges, unless otherwise specified. (Notes 2, 3)
Symbol
Parameter
Conditions
Pin
Min
Typ
Max
Units
V
OD1
Differential Output Voltage
R
L
= 100
(
Figure 1)
D
OUT-
,
D
OUT+
250
345
450
mV
V
OD1
Change in Magnitude of V
OD1
for Complementary Output
States
4
35
|mV|
V
OS
Offset Voltage
1.125
1.25
1.375
V
V
OS
Change in Magnitude of V
OS
for
Complementary Output States
5
25
|mV|
V
OH
Output Voltage High
R
L
= 100
1.41
1.60
V
V
OL
Output Voltage Low
0.90
1.07
V
V
IH
Input Voltage High
D
IN
,
EN,
EN*
2.0
V
CC
V
V
IL
Input Voltage Low
GND
0.8
V
I
I
Input Current
V
IN
= V
CC
, GND, 2.5V or 0.4V
-10
1
+10
A
V
CL
Input Clamp Voltage
I
CL
= -18 mA
-1.5
-0.8
V
I
OS
Output Short Circuit Current
V
OUT
= 0V (Note 8)
D
OUT-
,
D
OUT+
-3.5
-5.0
mA
I
OZ
Output TRI-STATE Current
EN = 0.8V and EN* = 2.0V,
V
OUT
= 0V or V
CC
-10
1
+10
A
I
CC
No Load Supply Current
Drivers Enabled
D
IN
= V
CC
or GND
DS90C031T
V
CC
1.7
3.0
mA
D
IN
= 2.5V or 0.4V
4.0
6.5
mA
I
CCL
Loaded Supply Current
Drivers Enabled
R
L
= 100
All Channels
V
IN
= V
CC
or GND
(all inputs)
DS90C031T
15.4
21.0
mA
DS90C031E
15.4
25.0
mA
I
CCZ
No Load Supply Current
Drivers Disabled
D
IN
= V
CC
or GND
EN = GND, EN* = V
CC
DS90C031T
2.2
4.0
mA
DS90C031E
2.2
10.0
mA
Switching Characteristics
V
CC
= +5.0V, T
A
= +25C DS90C031T. (Notes 3, 4, 6, 9)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PHLD
Differential Propagation Delay High to Low
R
L
= 100
, C
L
= 5 pF
(
Figure 2 and Figure 3)
1.0
2.0
3.0
ns
t
PLHD
Differential Propagation Delay Low to High
1.0
2.1
3.0
ns
t
SKD
Differential Skew |t
PHLD
t
PLHD
|
0
80
400
ps
t
SK1
Channel-to-Channel Skew (Note 4)
0
300
600
ps
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3
Switching Characteristics
(Continued)
V
CC
= +5.0V, T
A
= +25C DS90C031T. (Notes 3, 4, 6, 9)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
TLH
Rise Time
0.35
1.5
ns
t
THL
Fall Time
0.35
1.5
ns
t
PHZ
Disable Time High to Z
R
L
= 100
,
C
L
= 5 pF
(
Figure 4 and Figure 5)
2.5
10
ns
t
PLZ
Disable Time Low to Z
2.5
10
ns
t
PZH
Enable Time Z to High
2.5
10
ns
t
PZL
Enable Time Z to Low
2.5
10
ns
Switching Characteristics
V
CC
= +5.0V
10%, T
A
= -40C to +85C DS90C031T. (Notes 3, 4, 5, 6, 9)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PHLD
Differential Propagation Delay High to Low
R
L
= 100
, C
L
= 5 pF
(
Figure 2 and Figure 3)
0.5
2.0
3.5
ns
t
PLHD
Differential Propagation Delay Low to High
0.5
2.1
3.5
ns
t
SKD
Differential Skew |t
PHLD
t
PLHD
|
0
80
900
ps
t
SK1
Channel-to-Channel Skew (Note 4)
0
0.3
1.0
ns
t
SK2
Chip to Chip Skew (Note 5)
3.0
ns
t
TLH
Rise Time
0.35
2.0
ns
t
THL
Fall Time
0.35
2.0
ns
t
PHZ
Disable Time High to Z
R
L
= 100
,
C
L
= 5 pF
(
Figure 4 and Figure 5)
2.5
15
ns
t
PLZ
Disable Time Low to Z
2.5
15
ns
t
PZH
Enable Time Z to High
2.5
15
ns
t
PZL
Enable Time Z to Low
2.5
15
ns
Switching Characteristics
V
CC
= +5.0V
10%, T
A
= -55C to +125C DS90C031E. (Notes 3, 4, 5, 6, 9, 10)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PHLD
Differential Propagation Delay High to Low
R
L
= 100
, C
L
= 20 pF
(
Figure 3)
C
L
Connected between
each Output and GND
0.5
2.0
5.0
ns
t
PLHD
Differential Propagation Delay Low to High
0.5
2.1
5.0
ns
t
SKD
Differential Skew |t
PHLD
t
PLHD
|
0
0.08
3.0
ns
t
SK1
Channel-to-Channel Skew (Note 4)
0
0.3
3.0
ns
t
SK2
Chip to Chip Skew (Note 5)
4.5
ns
t
PHZ
Disable Time High to Z
R
L
= 100
,
C
L
= 5 pF
(
Figure 4 and Figure 5)
2.5
20
ns
t
PLZ
Disable Time Low to Z
2.5
20
ns
t
PZH
Enable Time Z to High
2.5
20
ns
t
PZL
Enable Time Z to Low
2.5
20
ns
Parameter Measurement Information
DS011946-3
FIGURE 1. Driver V
OD
and V
OS
Test Circuit
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4
Parameter Measurement Information
(Continued)
DS011946-4
FIGURE 2. Driver Propagation Delay and Transition Time Test Circuit
DS011946-5
FIGURE 3. Driver Propagation Delay and Transition Time Waveforms
DS011946-6
FIGURE 4. Driver TRI-STATE Delay Test Circuit
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5
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