Datasheet

equations: Where: Tcp = Crossing Point Tra, Trb, Tfa and Tfb are time measurements with respect to the
DS8922, DS8922A, DS8923A
www.ti.com SNLS373B –JUNE 1998–REVISED APRIL 2013
Driver Switching Characteristics
Parameter Conditions Min Typ Max Units
8922 8922A/23A
SINGLE ENDED CHARACTERISTICS (Figure 4, Figure 5, Figure 6, and Figure 8)
T
pLH
CL = 30 pF 12 15 15 ns
T
pHL
CL = 30 pF 12 15 15 ns
T
TLH
CL = 30 pF 5 10 10 ns
T
THL
CL = 30 pF 5 10 10 ns
|T
pLH
–T
pHL
| CL = 30 pF 0.5 ns
Skew CL = 30 pF
(1)
0.5 5 3.5 ns
Skew (Channel to Channel) 0.5 3.0 2.0 ns
T
pLZ
CL = 30 pF 15 ns
T
pHZ
CL = 30 pF 15 ns
T
pZL
CL = 30 pF 20 ns
T
pZH
CL = 30 pF 20 ns
DIFFERENTIAL SWITCHING CHARACTERISTICS
(2)
, (Figure 4)
T
pLH
CL = 30 pF 12 15 15 ns
T
pHL
CL = 30 pF 12 15 15 ns
|T
pLH
–T
pHL
| CL = 30 pF 0.5 6.0 2.75 ns
(1) Difference between complementary outputs at the 50% point.
(2) Differential Delays are defined as calculated results from single ended rise and fall time measurements. This approach in establishing
AC performance specifications has been taken due to limitations of available Automatic Test Equipment (ATE). The calculated ATE
results assume a linear transition between measurement points and are a result of the following
input.
Switching Time Waveforms
AC Test Circuits and Switching Waveforms
Figure 1.
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