LB180 Просмотр технического описания (PDF) - Unspecified
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LB180 Datasheet PDF : 24 Pages
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SN55LBC180
SN65LBC180
SN75LBC180
SLLS174G – FEBRUARY 1994 – REVISED APRIL 2009................................................................................................................................................... www.ti.com
PARAMETER MEASUREMENT INFORMATION
D
0 V or 3 V
Y
VOD
DE at 3 V Z
RL
2
RL
2
VOC
Figure 1. Differential and Common-Mode Output Voltages
D
0 V or 3 V
Vtest
–7 V < Vtest < 12 V
R1
375 Ω
Y
RL = 60 Ω
VOD
DE at 3 V
Z
R2
375 Ω
Vtest
Figure 2. Driver VOD Test Circuit
Generator
(see Note A)
50 Ω
DE at 3 V
RL = 54 Ω
Y
CL = 50 pF
(see Note B)
Output
Z
Input
1.5 V
td(OD)
90%
Output 50%
10%
3V
1.5 V
0V
td(OD)
90%
≈ 2.5 V
50%
10% ≈ – 2.5 V
tt(OD)
tt(OD)
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. The input pulse is supplied by a generator having the following characteristics: PRR > 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns,
ZO = 50 Ω.
B. CL includes probe and jig capacitance.
Figure 3. Driver Test Circuit and Differential Output Delay and Transition Time Voltage Waveforms
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