SN74CBTLV3257 Datasheet, PDF (5/6 Pages) Texas Instruments – LOW-VOLTAGE 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER

From Output
Under Test
CL = 50 pF
(see Note A)
SN74CBTLV3257
LOW-VOLTAGE 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER
SCDS040D – DECEMBER 1997 – REVISED NOVEMBER 1999
PARAMETER MEASUREMENT INFORMATION
V_CC = 3.3 V ± 0.3 V
500 Ω ^S1
500 Ω
2 × VCC
Open
GND
TEST
tpd
tPLZ/tPZL
tPHZ/tPZH
S1
Open
2 × VCC
GND
LOAD CIRCUIT
Output
Control
VCC/2
VCC/2
VCC
0V
Input
VCC/2
VCC/2
VCC
0V
tPLH
Output
VCC/2
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
tPHL
VOH
VCC/2
VOL
tPZL
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
VCC/2
tPLZ
VCC
VOL + 0.3 V
VOL
tPZH
tPHZ
Output
Waveform 2
S1 at GND
(see Note B)
VCC/2
VOH
VOH – 0.3 V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. CL 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.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
Figure 2. Load Circuit and Voltage Waveforms
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