BTF1A Datasheet, PDF (7/16 Pages) Agere Systems – Dual Differential Transceiver BTF1A With Idle Bus Indicator

Data Sheet
March 2001
Timing Characteristics (continued)
Dual Differential Transceiver BTF1A
With Idle Bus Indicator
7
6
5
4
tPLH (TYP)
3
2
tPHL (TYP)
1
0
0 25 50 75 100 125 150 175 200
LOAD CAPACITANCE, CL (pF)
12-3462(F)
Note: This graph is included as an aid to the system designers. Total circuit delay varies with load capacitance. The total delay is the sum of the
delay due to the external capacitance and the intrinsic delay of the device.
Figure 2. Typical Extrinsic Propagation Delay Versus Load Capacitance at 25 °C
INPUT
TRANSITION
tP1
tP2
OUTPUTS
tPHH
tPLL
OUTPUT
OUTPUT
OUTPUT
tPHL
80%
20%
ttLH
tPLH
80%
20%
ttHL
Figure 3. Driver Propagation Delay Timing
2.4 V
1.5 V
0.4 V
VOH
VOL
VOH
(VOH + VOL)/2
VOL
VOH
(VOH + VOL)/2
VOL
VOH
VOL
12-2677(F)
Agere Systems Inc.
7