CD74HC4051-EP Datasheet, PDF (8/15 Pages) Texas Instruments – ANALOG MULTIPLEXER/DEMULTIPLEXER

CD74HC4051-EP
ANALOG MULTIPLEXER/DEMULTIPLEXER
SCLS464 – SEPTEMBER 2002
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
Test
Point
CL
(see Note A)
RL = 1 kΩ
LOAD CIRCUIT
VCC
S1
S2
VEE
PARAMETER
tPZH
ten
tPZL
tdis
tPHZ
tPLZ
tpd
S1
Open
Closed
Open
Closed
Open
S2
Closed
Open
Closed
Open
Open
Input
In-Phase
Output
Out-of-Phase
Output
50% VCC
tPLH
50%
10%
tPHL
90%
90%
50% VCC
tPHL
90%
tr
501%0%VCC
tf
tPLH
50%
10%
VCC
VEE
VOH
5100%%VCVCOL
tf
90% ^VOH
VOL
tr
Output
Control
tPZL
Output
Waveform 1
(see Note B)
tPZH
Output
Waveform 2
(see Note B)
50% VCC
VCC
50% VCC
0V
50% VCC
tPLZ
≈VCC
10% _VOL
tPHZ
50% VCC
90%
VOH
≈0 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
VOLTAGE WAVEFORMS
OUTPUT ENABLE AND DISABLE TIMES
NOTES: A. CL includes probe and test-fixture capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following
characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.
D. For clock inputs, fmax is measured with the input duty cycle at 50%.
E. The outputs are measured one at a time with one input transition per measurement.
F. tPLZ and tPHZ are the same as tdis.
G. tPZL and tPZH are the same as ten.
H. tPLH and tPHL are the same as tpd.
Figure 7. Load Circuit and Voltage Waveforms
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