LTC1520 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1520 Datasheet PDF : 8 Pages
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UW
W
SWITCHI G TI E WAVEFOR S
INPUT
tPLH
OUTPUT
3V
2.5V
VDD/2
2.5V
tPHL
VDD/2
2V
1520 F01
INPUT
2.5V
+
1/4 LTC1520
–
Figure 1. Propagation Delay Test Circuit and Waveforms
LTC1520
OUTPUT
15pF
1520 F01b
3V
ENABLE
0V
5V
OUT 1
VOL
VOH
OUT 1
0V
RECEIVER
OUTPUT
1.5V
1.5V
t ZL
t LZ
OUTPUT
1.5V NORMALLY LOW
0.2V
1.5V
OUTPUT
NORMALLY HIGH
t ZH
t HZ
S1
CL
1k S2
1k
VDD
0.2V
1520 F02
Figure 2. Receiver Enable and Disable Timing
Test Circuit and Waveforms
3V
INPUT
A1, A2
B1, B2 = 2.5V
2V
CH1 OUT
tCH-CH
VDD/2
VDD/2
tCH-CH
CH2 OUT
VDD/2
VDD/2
1520 F03
Figure 3. Any Channel to Any Channel Skew, Same Package
INPUT
A1, B1
VID = 500mV
SAME INPUT FOR BOTH PACKAGES
PACKAGE 1
OUT 1
PACKAGE 2
OUT 1
tPKG-PKG
tPKG-PKG
1520 F04
Figure 4. Package-to-Package Propagation Delay Skew
UU
EQUIVALE T I PUT NETWORKS
≥18k
A
3.3V
≥18k
B
3.3V
≥18k
A
≥18k
B
RECEIVER ENABLED, VDD = 5V
RECEIVER DISABLED OR VDD = 0V
1520 F05
Figure 5. Input Thevenin Equivalent
5
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