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MM74HC393 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. MM74HC393
Description  Dual 4-Bit Binary Counter
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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MM74HC393 Datasheet(HTML) 1 Page - Fairchild Semiconductor

   
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September 1983
Revised February 1999
© 1999 Fairchild Semiconductor Corporation
DS005337.prf
www.fairchildsemi.com
MM74HC393
Dual 4-Bit Binary Counter
General Description
The MM74HC393 counter circuits contain independent rip-
ple carry counters and utilize advanced silicon-gate CMOS
technology. The MM74HC393 contains two 4-bit ripple
carry binary counters, which can be cascaded to create a
single divide-by-256 counter.
Each of the two 4-bit counters is incremented on the HIGH-
to-LOW transition (negative edge) of the clock input, and
each has an independent clear input. When clear is set
HIGH all four bits of each counter are set to a low level.
This enables count truncation and allows the implementa-
tion of divide-by-N counter configurations.
Each of the counters outputs can drive 10 low power
Schottky TTL equivalent loads. This counter is functionally
as well as pin equivalent to the 74LS393. All inputs are pro-
tected from damage due to static discharge by diodes to
VCC and ground.
Features
s Typical operating frequency: 50 MHz
s Typical propagation delay: 13 ns (Ck to QA)
s Wide operating supply voltage range: 2–6V
s Low input current:
<1 µA
s Low quiescent supply current: 80
µA maximum (74HC
Series)
s Fanout of 10 LS-TTL loads
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignments for DIP, SOIC, SOP and TSSOP
Top View
Order Number
Package Number
Package Description
MM74HC393M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
MM74HC393SJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HC393MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HC393N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide


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