June 1998
DS90C031
LVDS Quad CMOS Differential Line Driver
General Description
The DS90C031 is a quad CMOS differential line driver designed 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 Voltage Differential Signaling (LVDS) technology.
The DS90C031 accepts TTL/CMOS input levels and translates them to low voltage (350 mV) differential output signals. 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
nUltra low power dissipation
n400 ps maximum differential skew (5V, 25ÊC)
n3.5 ns maximum propagation delay
nIndustrial operating temperature range
nMilitary operating temperature range option
nAvailable in surface mount packaging (SOIC) and (LCC)
nPin compatible with DS26C31, MB571 (PECL) and
41LG (PECL)
nCompatible with IEEE 1596.3 SCI LVDS standard
nConforms to ANSI/TIA/EIA-644 LVDS standard
nAvailable to Standard Microcircuit Drawing (SMD) 5962-95833
Connection Diagrams
Dual-In-Line |
LCC Package |
DS011946-1
Order Number DS90C031TM
See NS Package Number M16A
DS011946-33
Order Number DS90C031E-QML
See NS Package Number E20A
For Complete Military Specifications,
refer to appropriate SMD or MDS.
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
Driver Line Differential CMOS Quad LVDS DS90C031
© 1998 National Semiconductor Corporation |
DS011946 |
www.national.com |
Functional Diagram
DS011946-2
Truth Table
DRIVER
Enables |
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Input |
Outputs |
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EN |
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EN* |
DIN |
DOUT+ |
DOUT− |
L |
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H |
X |
Z |
Z |
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All other combinations |
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L |
L |
H |
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of ENABLE inputs |
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H |
H |
L |
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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 (VCC) |
−0.3V to +6V |
Input Voltage (DIN) |
−0.3V to (V CC + 0.3V) |
Enable Input Voltage (EN, EN*) |
−0.3V to (V CC + 0.3V) |
Output Voltage (DOUT+, DOUT− ) |
−0.3V to (V CC + 0.3V) |
Short Circuit Duration |
|
(DOUT+, DOUT− ) |
Continuous |
Maximum Package Power Dissipation @ +25ÊC |
|
M Package |
1068 mW |
E Package |
1900 mW |
Derate M Package |
8.5 mW/ÊC above +25ÊC |
Derate E Package |
12.8 mW/ÊC above +25ÊC |
Storage Temperature Range |
−65ÊC to +150ÊC |
Lead Temperature Range |
|
Soldering (4 sec.) |
+260ÊC |
Maximum Junction Temperature |
|
(DS90C031T) |
+150ÊC |
Maximum Junction Temperature |
|
(DS90C031E) |
+175ÊC |
ESD Rating (Note 7) |
|
(HBM, 1.5 kW, 100 pF) |
³ 3,500V |
(EIAJ, 0 W, 200 pF) |
³ 250V |
Recommended Operating
Conditions
|
Min |
Typ |
Max |
Units |
Supply Voltage (VCC) |
+4.5 |
+5.0 |
+5.5 |
V |
Operating Free Air Temperature (TA) |
|
|
|
|
DS90C031T |
−40 |
+25 |
+85 |
ÊC |
DS90C031E |
−55 |
+25 |
+125 |
ÊC |
Electrical Characteristics
Over supply voltage and operating temperature ranges, unless otherwise specified. (Notes 2, 3)
Symbol |
Parameter |
Conditions |
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Pin |
Min |
Typ |
Max |
Units |
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VOD1 |
Differential Output Voltage |
RL = 100W (Figure 1) |
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DOUT− , |
250 |
345 |
450 |
mV |
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DVOD1 |
Change in Magnitude of VOD1 |
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DOUT+ |
|
4 |
35 |
|mV| |
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for Complementary Output |
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States |
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VOS |
Offset Voltage |
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1.125 |
1.25 |
1.375 |
V |
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DVOS |
Change in Magnitude of VOS for |
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5 |
25 |
|mV| |
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Complementary Output States |
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VOH |
Output Voltage High |
RL = 100W |
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1.41 |
1.60 |
V |
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VOL |
Output Voltage Low |
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|
0.90 |
1.07 |
|
V |
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VIH |
Input Voltage High |
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DIN, |
2.0 |
|
VCC |
V |
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VIL |
Input Voltage Low |
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EN, |
GND |
|
0.8 |
V |
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EN* |
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II |
Input Current |
VIN = VCC, GND, 2.5V or 0.4V |
−10 |
±1 |
+10 |
µA |
|||
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|||||||||
VCL |
Input Clamp Voltage |
ICL = −18 mA |
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−1.5 |
−0.8 |
|
V |
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IOS |
Output Short Circuit Current |
VOUT = 0V (Note 8) |
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DOUT− , |
|
−3.5 |
−5.0 |
mA |
|
IOZ |
Output TRI-STATE Current |
EN = 0.8V and EN* = 2.0V, |
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DOUT+ |
−10 |
±1 |
+10 |
µA |
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VOUT = 0V or VCC |
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ICC |
No Load Supply Current |
DIN = VCC or GND |
DS90C031T |
VCC |
|
1.7 |
3.0 |
mA |
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Drivers Enabled |
DIN = 2.5V or 0.4V |
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4.0 |
6.5 |
mA |
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ICCL |
Loaded Supply Current |
RL = 100W All Channels |
DS90C031T |
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15.4 |
21.0 |
mA |
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Drivers Enabled |
VIN = VCC or GND |
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DS90C031E |
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15.4 |
25.0 |
mA |
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(all inputs) |
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ICCZ |
No Load Supply Current |
DIN = VCC or GND |
DS90C031T |
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2.2 |
4.0 |
mA |
|
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Drivers Disabled |
EN = GND, EN* = VCC |
DS90C031E |
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2.2 |
10.0 |
mA |
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Switching Characteristics
VCC = +5.0V, TA = +25ÊC DS90C031T. (Notes 3, 4, 6, 9)
Symbol |
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
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tPHLD |
Differential Propagation Delay High to Low |
RL = 100W, CL = 5 pF |
1.0 |
2.0 |
3.0 |
ns |
tPLHD |
Differential Propagation Delay Low to High |
(Figure 2 and Figure 3) |
1.0 |
2.1 |
3.0 |
ns |
tSKD |
Differential Skew |tPHLD ± tPLHD| |
|
0 |
80 |
400 |
ps |
tSK1 |
Channel-to-Channel Skew (Note 4) |
|
0 |
300 |
600 |
ps |
3 |
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Switching Characteristics (Continued)
VCC = +5.0V, TA = +25ÊC DS90C031T. (Notes 3, 4, 6, 9)
Symbol |
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
tTLH |
Rise Time |
|
|
0.35 |
1.5 |
ns |
tTHL |
Fall Time |
|
|
0.35 |
1.5 |
ns |
tPHZ |
Disable Time High to Z |
RL = 100Ω, |
|
2.5 |
10 |
ns |
tPLZ |
Disable Time Low to Z |
CL = 5 pF |
|
2.5 |
10 |
ns |
tPZH |
Enable Time Z to High |
(Figure 4 and Figure 5) |
|
2.5 |
10 |
ns |
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tPZL |
Enable Time Z to Low |
|
|
2.5 |
10 |
ns |
Switching Characteristics
VCC = +5.0V ± 10%, TA = −40ÊC to +85ÊC DS90C031T. (Notes 3, 4, 5, 6, 9)
Symbol |
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
|
|
|
|
|
|
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tPHLD |
Differential Propagation Delay High to Low |
RL = 100Ω, CL = 5 pF |
0.5 |
2.0 |
3.5 |
ns |
tPLHD |
Differential Propagation Delay Low to High |
(Figure 2 and Figure 3) |
0.5 |
2.1 |
3.5 |
ns |
tSKD |
Differential Skew |tPHLD ± tPLHD| |
|
0 |
80 |
900 |
ps |
tSK1 |
Channel-to-Channel Skew (Note 4) |
|
0 |
0.3 |
1.0 |
ns |
tSK2 |
Chip to Chip Skew (Note 5) |
|
|
|
3.0 |
ns |
tTLH |
Rise Time |
|
|
0.35 |
2.0 |
ns |
tTHL |
Fall Time |
|
|
0.35 |
2.0 |
ns |
tPHZ |
Disable Time High to Z |
RL = 100Ω, |
|
2.5 |
15 |
ns |
tPLZ |
Disable Time Low to Z |
CL = 5 pF |
|
2.5 |
15 |
ns |
tPZH |
Enable Time Z to High |
(Figure 4 and Figure 5) |
|
2.5 |
15 |
ns |
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|||||
tPZL |
Enable Time Z to Low |
|
|
2.5 |
15 |
ns |
Switching Characteristics
VCC = +5.0V ± 10%, TA = −55ÊC to +125ÊC DS90C031E. (Notes 3, 4, 5, 6, 9, 10)
Symbol |
Parameter |
Conditions |
Min |
Typ |
Max |
Units |
|
|
|
|
|
|
|
|
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tPHLD |
Differential Propagation Delay High to Low |
RL = 100Ω, CL = 20 pF |
0.5 |
2.0 |
5.0 |
ns |
|
tPLHD |
Differential Propagation Delay Low to High |
(Figure 3) |
0.5 |
2.1 |
5.0 |
ns |
|
|
|
CL Connected between |
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tSKD |
Differential Skew |tPHLD ± tPLHD| |
0 |
0.08 |
3.0 |
ns |
||
each Output and GND |
|||||||
tSK1 |
Channel-to-Channel Skew (Note 4) |
0 |
0.3 |
3.0 |
ns |
||
|
|||||||
tSK2 |
Chip to Chip Skew (Note 5) |
|
|
|
4.5 |
ns |
|
tPHZ |
Disable Time High to Z |
RL = 100Ω, |
|
2.5 |
20 |
ns |
|
tPLZ |
Disable Time Low to Z |
CL = 5 pF |
|
2.5 |
20 |
ns |
|
|
|
(Figure 4 and Figure 5) |
|
|
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tPZH |
Enable Time Z to High |
|
2.5 |
20 |
ns |
||
|
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||||||
tPZL |
Enable Time Z to Low |
|
|
2.5 |
20 |
ns |
Parameter Measurement Information
DS011946-3
FIGURE 1. Driver VOD and VOS 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
5 |
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