Datasheet

6
LTC1518/LTC1519
t
r
= t
f
≤ 3ns for all input and enable signals.
Figure 1. Propagation Delay Test Circuit and Waveforms
Figure 2. Receiver Enable and Disable Timing Test Circuit
and Waveforms
Figure 4. Package-to-Package Propagation Delay Skew
Figure 3. Any Channel to Any Channel Skew, Same Package
SWITCHI G TI E WAVEFOR S
UWW
2.5V 2.5V
V
DD
/2 V
DD
/2
4V
1V
INPUT
OUTPUT
t
PLH
t
PHL
1518/19 F01
–
+
INPUT
2.5V
OUTPUT
15pF
1518/19 F01b
1/4
LTC1518
LTC1519
1.5V
2.5V
2.5V
C
L
1k
1k
S1
S2
t
ZH
t
ZL
1.5V
t
LZ
0.2V
0.2V
t
HZ
V
DD
OUTPUT
NORMALLY LOW
OUTPUT
NORMALLY HIGH
0V
3V
ENABLE
5V
V
OL
V
OH
0V
RECEIVER
OUTPUT
OUT 1
OUT 1
1518/19 F02
V
DD
/2 V
DD
/2
V
DD
/2 V
DD
/2
4V
B1, B2 = 2.5V
1V
CH1 OUT
INPUT
A1, A2
CH2 OUT
t
CH-CH
t
CH-CH
1518/19 F03
SAME INPUT FOR BOTH PACKAGES
INPUT
A1, B1
V
ID
= 1.5V
PACKAGE 1
OUT 1
1518/19 F04
t
PKG-PKG
t
PKG-PKG
PACKAGE 2
OUT 1