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74VHC393 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 74VHC393
Description  Dual 4-Bit Binary Counter
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74VHC393 Datasheet(HTML) 1 Page - Fairchild Semiconductor

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© 2005 Fairchild Semiconductor Corporation
DS011571
www.fairchildsemi.com
March 1993
Revised February 2005
74VHC393
Dual 4-Bit Binary Counter
General Description
The VHC393 is an advanced high speed CMOS 4-bit
Binary Counter fabricated with silicon gate CMOS technol-
ogy. It achieves the high speed operation similar to equiva-
lent Bipolar Schottky TTL while maintaining the CMOS low
power dissipation. It contains two independent counter cir-
cuits in one package, so that counting or frequency division
of 8 binary bits can be achieved with one IC. This device
changes state on the negative going transition of the
CLOCK pulse. The counter can be reset to “0” (Q0–Q3
“L”) by a HIGH at the CLEAR input regardless of other
inputs.
An input protection circuit ensures that 0V to 7V can be
applied to the input pins without regard to the supply volt-
age. This device can be used to interface 5V to 3V systems
and two supply systems such as battery back up. This cir-
cuit prevents device destruction due to mismatched supply
and input voltages.
Features
s High Speed: fMAX 170 MHz (typ) at TA 25qC
s Low power dissipation: ICC 4 PA (max) at TA 25qC
s High noise immunity: VNIH VNIL 28% VCC (min)
s Power down protection is provided on all inputs
s Pin and function compatible with 74HC393
Ordering Code:
Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
Logic Symbol
IEEE/IEC
Connection Diagram
Pin Descriptions
Order Number
Package
Package Description
Number
74VHC393M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
74VHC393SJ
M14D
Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74VHC393MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74VHC393MTCX_NL
(Note 1)
MTC14
Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
74VHC393N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pin Names
Description
CLR1, CLR2
Clear Inputs
CP1, CP2
Clock Pulse Inputs
QA, QB, QC, QD
Outputs


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