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CD54HC251 Datasheet(PDF) 8 Page - Texas Instruments

Part # CD54HC251
Description  CDx4HC251, CDx4HCT251 High-Speed CMOS Logic 8-Input Multiplexer, Three-State
PDF  21 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

CD54HC251 Datasheet(HTML) 8 Page - Texas Instruments

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1.3V
Input
1.3V
3V
0 V
50%
50%
VOH
VOL
tPLH
(1)
tPHL
(1)
VOH
VOL
tPHL
(1)
tPLH
(1)
Output
Waveform 1
Output
Waveform 2
50%
50%
(1) The greater between tPLH and tPHL is the same as tpd.
Figure 6-5. Voltage Waveforms, Propagation
Delays for TTL-Compatible Inputs
1.3V
Input
1.3V
3V
0 V
50%
50%
VCC
VOL
tPZL
(1)
tPLZ
(2)
90%
VOH
0 V
tPZH
(1)
tPHZ
(2)
Output
Waveform 1
S1 CLOSED,
S2 OPEN
Output
Waveform 2
S1 OPEN,
S2 CLOSED
10%
(1) tPLZ and tPHZ are the same as tdis.
(2) tPZL and tPZH are the same as ten.
Figure 6-6. Voltage Waveforms, TTL-Compatible
CMOS Inputs Propagation Delays
CD54HC251, CD74HC251, CD54HCT251, CD74HCT251
SCHS169D – NOVEMBER 1998 – REVISED MARCH 2022
www.ti.com
8
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Copyright © 2022 Texas Instruments Incorporated
Product Folder Links: CD54HC251 CD74HC251 CD54HCT251 CD74HCT251



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