74vhc393 Fairchild Semiconductor, 74vhc393 Datasheet - Page 2
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74vhc393
Manufacturer Part Number
74vhc393
Description
74vhc393 Dual 4-bit Binary Counter
Manufacturer
Fairchild Semiconductor
Datasheet
1.74VHC393.pdf
(10 pages)
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©1998 Fairchild Semiconductor Corporation
74VHC393 Rev. 1.4
Connection Diagram
Pin Descriptions
System Diagram
CLR1, CLR2
CP
QA, QB, QC, QD
1
, CP
Pin Names
2
Clear Inputs
Clock Pulse Inputs
Outputs
Description
2
Logic Symbol/s
Truth Table
X: Don’t Care
CP
X
Inputs
CLR
H
L
L
IEEE/IEC
QA
L
QB
No Change
Outputs
L
Count Up
QC
www.fairchildsemi.com
L
QD
L