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| MC74VHCT257A_14 Datasheet, PDF (5/7 Pages) ON Semiconductor – Quad 2-Channel Multiplexer | |||
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MC74VHCT257A
VCC
A, B or S
50%
GND
tPLH
tPHL
Y
50% VCC
Figure 5. Switching Waveform
VCC
OE
50%
GND
tPZL
tPLZ
HIGH
Y
50% VCC
IMPEDANCE
VOL + 0.3V
tPZH
tPHZ
VOH - 0.3V
Y
50% VCC
HIGH
IMPEDANCE
Figure 6. Switching Waveform
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
*Includes all probe and jig capacitance
Figure 7. Test Circuit
DEVICE
UNDER
TEST
TEST POINT
1 kW
OUTPUT
CL *
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
*Includes all probe and jig capacitance
Figure 8. Test Circuit
INPUT
Figure 9. Input Equivalent Circuit
ORDERING INFORMATION
Device
MC74VHCT257ADG
Package
SOICâ16
(PbâFree)
Shippingâ
48 Units / Rail
MC74VHCT257ADR2G
SOICâ16
(PbâFree)
2500 Tape & Reel
MC74VHCT257ADTG
TSSOPâ16
(PbâFree)
96 Units / Rail
M74VHCT257ADTR2G
TSSOPâ16
(PbâFree)
2500 Tape & Reel
â For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
http://onsemi.com
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