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DS34LV87T Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. DS34LV87T
Description  Enhanced CMOS Quad Differential Line Driver
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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DS34LV87T Datasheet(HTML) 3 Page - National Semiconductor (TI)

   
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Switching Characteristics (Notes 5, 6)
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t
PHLD
Differential Propagation Delay
R
L = 100
Ω,C
L =50pF
(Figures 2, 3)
6
10.5
16
ns
High to Low
t
PLHD
Differential Propagation Delay
6
11
16
ns
Low to High
t
SKD
Differential Skew
0.5
2.0
ns
|t
PHLD–tPLHD|
t
SK1
Skew, Pin to Pin (same device)
1.0
2.0
ns
t
SK2
Skew, Part to Part (Note 8)
3.0
5.0
ns
t
TLH
Differential Transition Time
4.2
10
ns
Low to High (20% to 80%)
t
THL
Differential Transition Time
4.7
10
ns
High to Low (80% to 20%)
t
PHZ
Disable Time High to Z
(Figures 4, 5 )12
20
ns
t
PLZ
Disable Time Low to Z
920
ns
t
PZH
Enable Time Z to High
22
32
ns
t
PZL
Enable Time Z to Low
22
32
ns
f
MAX
Maximum Operating Frequency
32
MHz
(Note 9)
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 device
should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation.
Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except differential
voltages VOD1,VOD2,VOD3.
Note 3: All typical values are given for VCC= 3.3V and TA = +25˚C.
Note 4: Only one output shorted at a time. The output (true or complement) is configured High.
Note 5: f = 1 MHz, tr and tf ≤ 6 ns (10% to 90%).
Note 6: See TIA/EIA-422-B specifications for exact test conditions.
Note 7: This specification limit is for compliance with TIA/EIA-422-B and ITU-T V.11.
Note 8: Devices are at the same VCC and within 5˚C within the operating temperature range.
Note 9: All channels switching, output duty cycle criteria is 40%/60% measured at 50%. This parameter is guaranteed by design and characterization.
Parameter Measurement Information
01264502
FIGURE 1. Differential Driver DC Test Circuit
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