LB180 Просмотр технического описания (PDF) - Unspecified
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LB180 Datasheet PDF : 24 Pages
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SN55LBC180
SN65LBC180
SN75LBC180
www.ti.com................................................................................................................................................... SLLS174G – FEBRUARY 1994 – REVISED APRIL 2009
PARAMETER MEASUREMENT INFORMATION (continued)
D
0 V or 3 V
Generator
(see Note A)
DE
Input
50 Ω
Y S1
Z
CL = 50 pF
(see Note B)
Output
Input
RL = 110 Ω
Output
1.5 V 1.5 V
tPZH
2.3 V
tPHZ
3V
0V
0.5 V
VOH
Voff ≈ 0
TEST CIRCUIT
VOLTAGE WAVEFORMS
Figure 4. Driver Test Circuit and Enable and Disable Time Waveforms
D
0 V or 3 V
Generator
(see Note A)
50 Ω
DE
Input
Y
S1
Z
CL = 50 pF
(see Note B)
5V
RL = 110 Ω
Output
Input
tPZL
Output
1.5 V
3V
1.5 V
0V
2.3 V
tPLZ
5V
0.5 V
VOL
TEST CIRCUIT
VOLTAGE WAVEFORMS
Figure 5. Driver Test Circuit and Enable and Disable Time Voltage Waveforms
Generator
(see Note A)
Input
A
50 Ω
B
1.5 V
0V
R
RE
CL = 15 pF
(see Note B)
Input
1.5 V
Output
tPLH
Output
90%
1.3 V
10%
tt
3V
1.5 V
0V
90%
tPHL
VOH
1.3 V
10% VOL
tt
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 6. Receiver Test Circuit and Propagation Delay Time Voltage Waveforms
Copyright © 1994–2009, Texas Instruments Incorporated
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