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參數(shù)資料
| 型號： | BTK1A |
| 英文描述： | Dual Differential Transceivers BTK1A and BTM1A |
| 中文描述： | 雙差分收發(fā)器BTK1A和BTM1A |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 301K |
| 代理商： | BTK1A |
6
Agere Systems Inc.
Data Sheet
October 2001
BTK1A and BTM1A
Dual Differential Transceivers
Timing Characteristics
Table 6. Driver Timing Characteristics
(See Figure 3 and Figure 4.)
For t
P1
and t
P2
propagation delays over the temperature range, see Figure 13. Propagation delay test circuit
connected to output is shown in Figure 7. T
A
=
40
°
C to +125
°
C, V
CC
= 5 V
±
0.5 V.
* tP1 and tP2 are measured from the 1.5 V point of the input to the crossover point of the outputs (see Figure 3).
CL = 5 pF. Capacitor is connected from each output to ground.
Table 7. Receiver Timing Characteristics
(See Figure 5 and Figure 6.)
For propagation delays (t
PLH
and t
PHL
) over the temperature range, see Figure 14 and Figure 15. Propagation delay
test circuit connected to output is shown in Figure 8. T
A
=
40
°
C to +125
°
C, V
CC
= 5 V
±
0.5 V.
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
4
4
8
8
12
12
ns
ns
t
skew1
t
skew2
t
skew
t
tLH
t
tHL
—
—
—
—
—
0.1
0.2
—
0.7
0.7
0.3
0.5
0.3
2
2
ns
ns
ns
ns
ns
Parameter
Symbol
Min
Typ
Max
Unit
Propagation Delay:
Input to Output High
Input to Output Low
Pulse Width Distortion, ltpHL-tpLHI:
Load Capacitance (C
L
) = 15 pF
Load Capacitance (C
L
) = 150 pF
Output Waveform Skews:
Part-to-Part Skew, T
A
= 75
°
C
Part-to-Part Skew, T
A
=
–
40
°
C to +125
°
C
Same Part Skew
Disable Time, C
L
= 5 pF:
High-to-high Impedance
Low-to-high Impedance
Enable Time:
High Impedance to High
High Impedance to Low
Rise Time (20%
—
80%)
Fall Time (80%
—
20%)
t
PLH
t
PHL
1.5
1.5
2.5
2.5
4.0
4.0
ns
ns
tskew1
tskew1
—
—
—
—
0.7
4.0
ns
ns
tskew1p-p
tskew1p-p
tskew
—
—
—
0.8
—
—
1.4
1.5
0.3
ns
ns
ns
t
PHZ
t
PLZ
—
—
5
5
12
12
ns
ns
t
PZH
t
PZL
t
tLH
t
tHL
—
—
—
—
8
8
—
—
12
12
3.0
3.0
ns
ns
ns
ns
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