Datasheet

10
LTC1484
SWITCHI G TI E WAVEFOR S
UWW
Figure 6. Driver Propagation Delays
Figure 9. Receiver Enable and Shutdown Timing
Figure 8. Receiver Propagation Delays
1.5V
2.3V
2.3V
t
ZH(SHDN)
, t
ZH
NOTE: A, B ARE THREE-STATED WHEN DE = 0, 1kΩ PULL-UP OR 1kΩ PULL-DOWN
t
ZL(SHDN)
, t
ZL
1.5V
0.5V
0.5V
t
HZ
t
LZ
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
DE
5V
V
OL
V
OH
0V
A, B
A, B
1484 F07
f = 1MHz, t
r
≤ 10ns, t
f
≤ 10ns
Figure 7. Driver Enable and Disable Timing
1.5V
1.5V
1.5V
t
ZH(SHDN),
t
ZH
NOTE: DE = 0, RO IS THREE-STATED IN SHUTDOWN, 1kΩ PULL-UP FOR NORMALLY LOW OUTPUT,
1kΩ PULL-DOWN FOR NORMALLY HIGH OUTPUT
t
ZL(SHDN),
t
ZL
1.5V
0.5V
0.5V
t
HZ
t
LZ
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
RE
5V
0V
5V
0V
RO
RO
1484 F09
f = 1MHz, t
r
≤ 10ns, t
f
≤ 10ns
0V
t
PHL
A – B
V
OL
RO
1.5V
NOTE: t
SKD
= |t
PHL
– t
PLH
|, RE = 0
1.5V
0V
t
PLH
INPUT
OUTPUT
5V
–V
OD2
V
OD2
1484 F08
f = 1MHz, t
r
≤ 10ns, t
f
≤ 10ns
DI
3V
1.5V
t
PLH
t
r
t
SKEW
NOTE: DE = 1
1/2 V
O
V
O
f = 1MHz, t
r
≤
10ns, t
f
≤
10ns
90%
50%
50%
10%
0V
B
A
V
O
–V
O
90%
1.5V
t
PHL
t
SKEW
10%
t
f
V
O
= V(A) – V(B)
1484 F06