DS90LV031B Datasheet, PDF (3/10 Pages) National Semiconductor (TI) – 3V LVDS Quad CMOS Differential Line Driver

Switching Characteristics - Industrial
Over supply voltage and operating temperature ranges, unless otherwise specified. (Notes 4, 10, 12)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t_PHLD
t_PLHD
t_SKD1
Differential Propagation Delay High to Low
Differential Propagation Delay Low to High
Differential Pulse Skew |t_PHLD − t_PLHD|
(Note 6)
R_L = 100Ω, C_L = 10 pF
(Figure 2 and Figure 3)
0.8
1.18
2.0
ns
0.8
1.25
2.0
ns
0
0.07
0.4
ns
t_SKD2
t_SKD3
t_SKD4
t_TLH
t_THL
t_PHZ
t_PLZ
t_PZH
t_PZL
f_MAX
Channel-to-Channel Skew (Note 7)
Differential Part to Part Skew (Note 8)
Differential Part to Part Skew (Note 9)
Rise Time
Fall Time
Disable Time High to Z
Disable Time Low to Z
Enable Time Z to High
Enable Time Z to Low
Maximum Operating Frequency (Note 14)
R_L = 100Ω, C_L = 10 pF
(Figure 4 and Figure 5)
0
0.1
0.5
0
1.0
0
1.2
0.38
1.5
0.40
1.5
5
5
7
7
200
250
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
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: These ABS-MAX voltage ratings are guaranteed by design and bench characterization. The pin under test is pulled negative with respect to ground, using
a curve tracer. During the test, I_CC and the current out of the pin under test are monitored using DC meters.
Note 3: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except: V_OD1 and
∆V_OD1.
Note 4: All typicals are given for: V_CC = +3.3V, T_A = +25˚C.
Note 5: The DS90LV031B is a current mode device and only functions within datasheet specifications when a resistive load is applied to the driver outputs typical
range is (90Ω to 110Ω)
Note 6: t_SKD1, |t_PHLD − t_PLHD| is the magnitude difference in differential propagation delay time between the positive going edge and the negative going edge of the
same channel.
Note 7: t_SKD2 is the Differential Channel-to-Channel Skew of any event on the same device.
Note 8: t_SKD3, Differential Part to Part Skew, is defined as the difference between the minimum and maximum specified differential propagation delays. This speci-
fication applies to devices at the same V_CC and within 5˚C of each other within the operating temperature range.
Note 9: t_SKD4, part to part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices over recommended
operating temperature and voltage ranges, and across process distribution. t_SKD4 is defined as |Max − Min| differential propagation delay.
Note 10: Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z_O = 50Ω, t_r ≤ 1 ns, and t_f ≤ 1 ns.
Note 11: Output short circuit current (I_OS) is specified as magnitude only, minus sign indicates direction only.
Note 12: C_L includes probe and jig capacitance.
Note 13: All input voltages are for one channel unless otherwise specified. Other inputs are set to GND.
Note 14: f_MAX generator input conditions: t_r = t_f < 1ns, (0% to 100%), 50% duty cycle, 0V to 3V. Output Criteria: duty cycle = 45%/55%, VOD > 250mV, all channels
switching.
Parameter Measurement Information
FIGURE 1. Driver V_OD and V_OS Test Circuit
DS101311-3
3
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