BTM1A Agere Systems, BTM1A Datasheet - Page 6

• Manufacturer Part Number: BTM1A
• Description: Dual Differential Transceivers--BTK1A And BTM1A
• Manufacturer: Agere Systems

BTK1A and BTM1A
Timing Characteristics
Table 6. Driver Timing Characteristics (See Figure 3 and Figure 4.)
For t
connected to output is shown in Figure 7. T
* 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
test circuit connected to output is shown in Figure 8. T
6
Propagation Delay:
Capacitive Delay
Disable Time (either E1 or E2):
Enable Time (either E1 or E2):
Output Skew:
Rise Time (20%—80%)
Fall Time (80%—20%)
Propagation Delay:
Pulse Width Distortion, ltpHL-tpLHI:
Output Waveform Skews:
Disable Time, C
Enable Time:
Rise Time (20% — 80%)
Fall Time (80% — 20%)
Input High to Output
Input Low to Output
High-to-High Impedance
Low-to-High Impedance
High Impedance to High
High Impedance to Low
|t
|t
Difference Between Drivers
Input to Output High
Input to Output Low
High-to-high Impedance
Low-to-high Impedance
P1
PHH –
Load Capacitance (C
Load Capacitance (C
Part-to-Part Skew, T
Part-to-Part Skew, T
Same Part Skew
High Impedance to High
High Impedance to Low
P1
– t
and t
P2
t
PHL
|
P2
|, |t
propagation delays over the temperature range, see Figure 13. Propagation delay test circuit
PLH
Parameter
L
= 5 pF:
– t
PLL
Parameter
†
†
A
A
|
PLH
L
L
= 75 °C
= –40 °C to +125 °C
) = 15 pF
) = 150 pF
and t
PHL
) over the temperature range, see Figure 14 and Figure 15. Propagation delay
A
= 40 °C to +125 °C, V
Symbol
t
t
t
t
skew1
skew2
t
t
t
t
t
t
t
PHZ
PZH
PLZ
PZL
P1
P2
skew
tLH
tHL
t
p
*
*
A
= 40 °C to +125 °C, V
tskew1p-p
tskew1p-p
Symbol
tskew1
tskew1
tskew
t
t
t
t
t
t
t
t
PLH
PHL
PHZ
PZH
PLZ
PZL
tLH
tHL
Min
0.8
0.8
—
—
—
—
—
—
4
4
4
4
CC
= 5 V
Min
1.5
1.5
—
—
—
—
—
—
—
—
—
—
—
0.5 V.
CC
0.02
Typ
1.2
1.2
0.1
0.2
0.7
0.7
—
8
8
8
8
= 5 V
Typ
2.5
2.5
0.8
—
—
—
—
—
—
5
5
8
8
0.5 V.
Max
Agere Systems Inc.
Max
0.03
4.0
4.0
0.7
4.0
1.4
1.5
0.3
3.0
3.0
12
12
12
12
2.0
2.0
0.3
0.5
0.3
12
12
12
12
2
2
October 2001
Unit
ns/pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns