6.6 Switching Characteristics
VCC = +3.3V ± 10%, TA = −40°C to +85°C(1)(2)(3)
| PARAMETER |
TEST CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
| tPHLD |
Differential propagation delay high to low |
RL = 100 Ω, CL = 15 pF
(Figure 18 and Figure 19)
|
0.5 |
0.9 |
1.7 |
ns |
| tPLHD |
Differential propagation delay low to high |
0.5 |
1.2 |
1.7 |
ns |
| tSKD1 |
Differential pulse skew |tPHLD − tPLHD|(4) |
|
0.3 |
0.4 |
ns |
| tSKD2 |
Channel-to-channel skew(5) |
|
0.4 |
0.5 |
ns |
| tSKD3 |
Differential part-to-part skew(6) |
0 |
|
1 |
ns |
| tSKD4 |
Differential part-to-part skew(7) |
0 |
|
1.2 |
ns |
| tTLH |
Rise time |
|
0.5 |
1.5 |
ns |
| tTHL |
Fall time |
|
0.5 |
1.5 |
ns |
| tPHZ |
Disable time high to Z |
RL = 100 Ω, CL = 15 pF
(Figure 20 and Figure 21) |
|
2 |
5 |
ns |
| tPLZ |
Disable time low to Z |
|
2 |
5 |
ns |
| tPZH |
Enable time Z to high |
|
3 |
7 |
ns |
| tPZL |
Enable time Z to low |
|
3 |
7 |
ns |
| fMAX |
Maximum operating frequency(8) |
|
200 |
250 |
|
MHz |
(1) All typicals are given for: VCC = 3.3 V, TA = +25°C.
(2) Generator waveform for all tests unless otherwise specified: f = 1 MHz, ZO = 50 Ω, tr ≤ 1 ns, and tf ≤ 1 ns.
(3) CL includes probe and jig capacitance.
(4) tSKD1 |tPHLD – tPLHD| is the magnitude difference in differential propagation delay time between the positive going edge and the negative going edge of the same channel.
(5) tSKD2 is the differential channel-to-channel skew of any event on the same device.
(6) tSKD3, differential part-to-part skew, is defined as the difference between the minimum and maximum specified differential propagation delays. This specification applies to devices at the same VCC and within 5°C of each other within the operating temperature range.
(7) tSKD4, 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. tSKD4 is defined as |Max − Min| differential propagation delay.
(8) 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.