DG3157 Datasheet, PDF (5/6 Pages) Vishay Siliconix – High-Speed, Low rON, SPDT Analog Switch (2:1 Multiplexer/Demultiplexer Bus Switch)

AC LOADING AND WAVEFORMS
New Product
From Output
Under Test
C_L
50 pF
R_L
500 W
R_L
500 W
V_LD
SW
Open
GND
Load Circuit
Figure 2. AC Test Circuit
DG3157
Vishay Siliconix
TEST
t_PLH/t_PHL
t_PLZ/t_PZL
t_PHZ/t_PZH
SW
Open
V_LD
GND
t_r = 2.5 ns
Switch
Input
10%
Output
90%
1.5 V
90%
1.5 V
t_w
t_PLH
1.5 V
t_f = 2.5 ns
t_f = 2.5 ns
3.0 V
90%
Logic
Input
1.5 V
10%
GND
10%
t_PZL
10%
t_PHL
V_OH
1.5 V
Output
Waveform 1
SW at V_LD
t_PZH
1.5 V
V_OL
Output
Waveform 2
SW at GND
1.5 V
t_r = 2.5 ns
90%
3.0 V
1.5 V
GND
t_PLZ
V_LD
2
V_OL + 0.3 V
V_OL
t_PHZ
V_OH
V_OH −0.3 V
0V
Propagation Delay Times
Enable and Disable Time—Low- and High-Level Enabling
Figure 3. AC Waveforms
Notes:
a. C_L includes probe and jig capacitance.
b. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
c. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
d. All input pulses are supplied by generators having the following characteristics: PRR v 10 MHz, Z_O = 50 W.
e. The outputs are measured one at a time with one transition per measurement.
f. t_PLZ and t_PHZ are the same as t_dis.
g. t_PZL and t_PZH are the same as t_dis.
h. t_PLH and t_PHL are the same as t_dis.
i. V_LD = 2 V+.
Document Number: 72648
S-32552—Rev. A, 15-Dec-03
www.vishay.com
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