DS8921_15 Datasheet, PDF (5/20 Pages) Texas Instruments – Differential Line Driver and Receiver Pair

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6.5 Receiver Switching Characteristics
TEST CONDITIONS
t_pLH
t_pHL
|t_pLH–t _pHL|
C_L = 30 pF
(Figure 3 and Figure 4)
C_L = 30 pF
(Figure 3 and Figure 4)
C_L = 30 pF
(Figure 3 and Figure 4)
DS8921, DS8921A, DS8921AT
SNLS374D – MAY 1998 – REVISED JANUARY 2015
MIN
TYP
MAX
8921
MAX
8921A
MAX
8921AT
UNIT
14
22.5
20
20
ns
14
22.5
20
20
ns
0.5
5
3.5
5
ns
6.6 Driver Switching Characteristics: Single-Ended Characteristics
TEST CONDITIONS
MIN
TYP
MAX
8921
t_pLH
C_L = 30 pF
(Figure 5 and Figure 6)
10
15
t_pHL
C_L = 30 pF
(Figure 5 and Figure 6)
10
15
t_TLH
C_L = 30 pF
(Figure 9 and Figure 10)
5
8
t_THL
Skew
C_L = 30 pF
(Figure 9 and Figure 10)
CL = 30 pF⁽¹⁾
5
8
1
5
(Figure 5 and Figure 6)
(1) Difference between complementary outputs at the 50% point.
MAX
8921A
15
MAX
8921AT
15
UNIT
ns
15
15
ns
8
9.5
ns
8
9.5
ns
3.5
3.5
ns
6.7 Driver Switching Characteristics: Differential Characteristics⁽¹⁾
TEST CONDITIONS
MIN
TYP
MAX
8921
t_pLH
C_L = 30 pF
(Figure 5, Figure 7, and Figure 8)
10
15
t_pHL
C_L = 30 pF
(Figure 5, Figure 7, and Figure 8)
10
15
|t_pLH–t _pHL| C_L = 30 pF
(Figure 5, Figure 7, and Figure 8)
0.5
6
MAX
8921A
15
MAX
8921AT
15
UNIT
ns
15
15
ns
2.75
2.75
ns
(1) 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 equations:
T_cr = Crossing Point T_ra, T_rb, T_fa and T _fb are time measurements with respect to the input. See Figure 8.
Where:
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