DS92LV090A_14 Datasheet, PDF (5/16 Pages) Texas Instruments – 9 Channel Bus LVDS Transceiver

DS92LV090A
www.ti.com
SNLS025D – APRIL 2000 – REVISED APRIL 2013
AC Electrical Characteristics
Over recommended operating supply voltage and temperature ranges unless otherwise specified ⁽¹⁾
Symbol
Parameter
Conditions
Min
Typ
Max
DIFFERENTIAL DRIVER TIMING REQUIREMENTS
t_PHLD
t_PLHD
t_SKD1
t_SKD2
t_SKD3
Differential Prop. Delay High to Low ⁽²⁾
Differential Prop. Delay Low to High ⁽²⁾
Differential Skew |t_PHLD–t_PLHD| ⁽³⁾
Chip to Chip Skew ⁽⁴⁾
Channel to Channel Skew ⁽⁵⁾
t_TLH
Transition Time Low to High
t_THL
Transition Time High to Low
t_PHZ
Disable Time High to Z
t_PLZ
Disable Time Low to Z
t_PZH
Enable Time Z to High
t_PZL
Enable Time Z to Low
DIFFERENTIAL RECEIVER TIMING REQUIREMENTS
t_PHLD
t_PLHD
t_SDK1
t_SDK2
t_SDK3
Differential Prop. Delay High to Low ⁽²⁾
Differential Prop Delay Low to High ⁽²⁾
Differential Skew |t_PHLD–t_PLHD| ⁽³⁾
Chip to Chip Skew ⁽⁴⁾
Channel to Channel Skew ⁽⁵⁾
t_TLH
Transition Time Low to High
t_THL
Transition Time High to Low
t_PHZ
Disable Time High to Z
t_PLZ
Disable Time Low to Z
t_PZH
Enable Time Z to High
t_PZL
Enable Time Z to Low
R_L = 27Ω,
Figure 4, Figure 5,
C_L = 10 pF
R_L = 27Ω,
Figure 6, Figure 7,
C_L = 10 pF
Figure 8, Figure 9,
C_L = 35 pF
R_L = 500Ω,
Figure 10, Figure 11,
C_L = 35 pF
0.6
1.4
2.2
0.6
1.4
2.2
80
1.6
0.25 0.45
0.6
1.2
0.5
1.2
3
8
3
8
3
8
3
8
1.6
2.4
3.2
1.6
2.4
3.2
80
1.6
0.35 0.60
1.5
2.5
1.5
2.5
4.5
10
3.5
8
3.5
8
3.5
8
Units
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
(1) Generator waveforms for all tests unless otherwise specified: f = 25 MHz, Z_O = 50Ω, t_r, t_f = <1.0 ns (0%–100%). To ensure fastest
propagation delay and minimum skew, data input edge rates should be equal to or faster than 1ns/V; control signals equal to or faster
than 3ns/V. In general, the faster the input edge rate, the better the AC performance.
(2) Propagation delays are specified by design and characterization.
(3) t_SKD1 |t_PHLD–t_PLHD| is the worse case skew between any channel and any device over recommended operation conditions.
(4) Chip to Chip skew is the difference in differential propagation delay between any channels of any devices, either edge.
(5) Channel to Channel skew is the difference in driver output or receiver output propagation delay between any channels within a device,
either edge.
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