74fst3257 ON Semiconductor, 74fst3257 Datasheet - Page 5

• Manufacturer Part Number: 74fst3257
• Description: Quad 2 1 Multiplexer/ Demultiplexer Bus Switch
• Manufacturer: ON Semiconductor

ENABLE
INPUT
NOTES:
1. Input driven by 50 W source terminated in 50 W.
2. CL includes load and stray capacitance.
*C
SWITCH
INPUT
OUTPUT
L
OUTPUT
OUTPUT
= 50 pF
t
f
= 2.5 nS
10 %
t
PLH
Figure 6. Enable/Disable Delays
t
t
90 %
PZH
PZL
Figure 5. Propagation Delays
AC Loading and Waveforms
1.5 V
Figure 4. AC Test Circuit
OUTPUT
UNDER
FROM
1.5 V
TEST
http://onsemi.com
1.5 V
74FST3257
90 %
10 %
t
f
= 2.5 nS
1.5 V
1.5 V
5
90 %
C
10 %
L
1.5 V
*
V
500 W
500 W
I
1.5 V
90 %
10 %
t
t
f
f
1.5 V
= 2.5 nS
= 2.5 nS
t
PZL
t
PHZL
t
PLH
3.0 V
V
V
V
V
GND
OL
OL
OH
OH
+ 0.3 V
− 0.3 V
V
V
3.0 V
GND
OH
OL