6.6 Switching Characteristics
VDD = +3.3V ± 10%, TA = −40°C to +125°C(1)(9)
| PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
| LVDS Outputs (Driver Outputs) |
| tPHLD |
Differential Propagation Delay High to Low |
RL = 100 Ω
(Figure 3 and Figure 4)
|
|
0.7 |
2 |
ns |
| tPLHD |
Differential Propagation Delay Low to High |
|
0.7 |
2 |
ns |
| tSKD1 |
Differential Pulse Skew |tPHLD − tPLHD|(2)(3) |
0 |
0.05 |
0.4 |
ns |
| tSKD2 |
Differential Channel-to-Channel Skew(2)(4) |
0 |
0.05 |
0.5 |
ns |
| tSKD3 |
Differential Part-to-Part Skew(2)(5) |
0 |
|
1 |
ns |
| tTLH |
Rise Time(2) |
0.2 |
0.4 |
1 |
ns |
| tTHL |
Fall Time(2) |
0.2 |
0.4 |
1 |
ns |
| tPHZ |
Disable Time High to Z |
RL = 100 Ω
(Figure 5 and Figure 6) |
|
1.5 |
3 |
ns |
| tPLZ |
Disable Time Low to Z |
|
1.5 |
3 |
ns |
| tPZH |
Enable Time Z to High |
1 |
3 |
6 |
ns |
| tPZL |
Enable Time Z to Low |
1 |
3 |
6 |
ns |
| fMAX |
Maximum Operating Frequency(10) |
|
200 |
250 |
|
MHz |
| LVCMOS Outputs (Receiver Outputs) |
| tPHL |
Propagation Delay High to Low |
(Figure 7 and Figure 8) |
0.5 |
2 |
3.5 |
ns |
| tPLH |
Propagation Delay Low to High |
0.5 |
2 |
3.5 |
ns |
| tSK1 |
Pulse Skew |tPHL − tPLH|(6) |
0 |
0.05 |
0.4 |
ns |
| tSK2 |
Channel-to-Channel Skew(7) |
0 |
0.05 |
0.5 |
ns |
| tSK3 |
Part-to-Part Skew(8) |
0 |
|
1 |
ns |
| tTLH |
Rise Time(2) |
0.3 |
0.9 |
1.4 |
ns |
| tTHL |
Fall Time(2) |
0.3 |
0.75 |
1.4 |
ns |
| tPHZ |
Disable Time High to Z |
(Figure 9 and Figure 10) |
3 |
5.6 |
8 |
ns |
| tPLZ |
Disable Time Low to Z |
3 |
5.4 |
8 |
ns |
| tPZH |
Enable Time Z to High |
2.5 |
4.6 |
7 |
ns |
| tPZL |
Enable Time Z to Low |
2.5 |
4.6 |
7 |
ns |
| fMAX |
Maximum Operating Frequency(11) |
|
200 |
250 |
|
MHz |
(1) All typical values are given for: VDD = +3.3 V, TA = +25°C.
(2) These parameters are specified by design. The limits are based on statistical analysis of the device performance over PVT (process, voltage, temperature) ranges.
(3) tSKD1 or differential pulse skew is defined as |tPHLD − tPLHD|. It is the magnitude difference in the differential propagation delays between the positive going edge and the negative going edge of the same driver channel.
(4) tSKD2 or differential channel-to-channel skew is defined as the magnitude difference in the differential propagation delays between two driver channels on the same device.
(5) tSKD3 or differential part-to-part skew is defined as |tPLHD Max − tPLHD Min| or |tPHLD Max − tPHLD Min|. It is the difference between the minimum and maximum specified differential propagation delays. This specification applies to devices at the same VDD and within 5°C of each other within the operating temperature range.
(6) tSK1 or pulse skew is defined as |tPHL − tPLH|. It is the magnitude difference in the propagation delays between the positive going edge and the negative going edge of the same receiver channel.
(7) tSK2 or channel-to-channel skew is defined as the magnitude difference in the propagation delays between two receiver channels on the same device.
(8) tSK3 or part-to-part skew is defined as |tPLH Max − tPLH Min| or |tPHL Max − tPHL Min|. It is the difference between the minimum and maximum specified propagation delays. This specification applies to devices at the same VDD and within 5°C of each other within the operating temperature range.
(9) Generator waveform for all tests unless otherwise specified: f = 1 MHz, ZO = 50 Ω, tr ≤ 1 ns, and tf ≤ 1 ns.
(10) fMAX generator input conditions: tr = tf < 1 ns (0% to 100%), 50% duty cycle, 0 V to 3 V. Output Criteria: duty cycle = 45%/55%, VOD > 250 mV, all channels switching.
(11) fMAX generator input conditions: tr = tf < 1 ns (0% to 100%), 50% duty cycle, VID = 200 mV, VCM = 1.2 V . Output Criteria: duty cycle = 45%/55%, VOH > 2.7 V, VOL < 0.25 V, all channels switching.
(12) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications.