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| 型號(hào)： | DS99144 |
| 英文描述： | QUAD DIFFERENTIAL DRIVERS |
| 中文描述： | 四差分驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 255K |
| 代理商： | DS99144 |
Agere Systems Inc.
5
Data Sheet
January 1999
BDG1A, BDP1A, BDGLA, BPNGA, BPNPA, and BPPGA
Quad Differential Drivers
Timing Characteristics
Table 4. Timing Characteristics
(See Figures 2 and 3.)
For t
P1
and t
P2
propagation delays over the temperature range, see Figure 9.
Propagation delay test circuit connected to output (see Figure 6).
T
A
=
–
40
°
C to +125
°
C, V
CC
= 5 V
±
0.5 V.
* t
P1
and t
P2
are measured from the 1.5 V point of the input to the crossover point of the outputs (see Figure 2).
CL = 5 pF. Capacitor is connected from each output to ground.
Parameter
Symbol
Min
Typ
Max
Unit
Propagation Delay:
Input High to Output
Input Low to Output
Capacitive Delay
Disable Time (either E1 or E2):
High-to-high Impedance
Low-to-high Impedance
Enable Time (either E1 or E2):
High Impedance to High
High Impedance to Low
Output Skew, |t
P1
–
t
P2
|
|t
PHH
–
t
PHL
|, |t
PLH
–
t
PLL
|
Difference Between Drivers
Rise Time (20%
—
80%)
Fall Time (80%
—
20%)
t
P1
*
t
P2
*
t
p
0.8
0.8
—
1.2
1.2
0.02
2.0
2.0
0.03
ns
ns
ns/pF
t
PHZ
t
PLZ
4
4
8
8
12
12
ns
ns
t
PZH
t
PZL
t
skew1
t
skew2
t
skew
t
tLH
t
tHL
4
4
—
—
—
—
—
8
8
12
12
0.3
0.5
0.3
2
2
ns
ns
ns
ns
ns
ns
ns
0.1
0.2
—
0.7
0.7
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