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Description
Synchronous Decade Counter with Asynchronous Clear
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General Description
TheMM54HC160/MM74HC160,MM54HC161/MM74HC161,MM54HC162/MM74HC162, and
MM54HC163/MM74HC163synchronouspresettablecount-ers utilize advanced silicon-gate
CMOS technology and in-tern al look-ahead carry logic for use in high speed counting app
lications. They offer the high noise immunity and low power consumption inherent to CMOS
with speeds similar to low power Schottky TTL.The’HC160andthe’HC162are 4bitdecadecou
nters,andthe’HC161 and the’HC163are 4bitbinarycounters.All flip-flops are clocked simulta
neous- l yon the low to high transition (positive edge)of the CLOCK In put waveform.These co
unters may be preset using the LOAD input. Pre-setting of all four flip-flops is synchronous to
the rising edge Of CLOCK.When LOAD is held low counting is disabled and the data on the A,
B, C, and D inputs is loaded into the counter on the rising edge of CLOCK. If the load input is
taken high before the positive edge of CLOCK the count Operation will be unaffected.All of th
ese counters maybe cleared by utilizing the CLEAR input.TheclearfunctionontheMM54HC162/
MM74HC162 and MM54HC163/MM74HC163 counters are synchronous to the clock.That is,the
counters are cleared on the posi-tive edge of CLOCK while the clear input is held low.The MM5
4HC160/MM74HC160 and MM54HC161/ MM74HC161 counters are cleared asynchronously. Wh
en The CLEAR is taken low the counter is cleared immediately regard less of the CLOCK.Two acti
ve high enable inputs (ENP and ENT) and a RIP-PLECARRY(RC)out put are provided to enable ea
sy cas ca ding of counters. Both ENABLE input s must be high to count. The ENT input also enabl
es the RC output. When enabled,the RC out puts a positive pulse when the counter overflows. Th
is pulse is approximately equal in duration toThe high level portion of the QA output.The RC out
put is fedTo successive cascaded stages to facilitate easy implemen-tation of N-bit counters.All in
puts are protected from damage due to static dis-Charge by diodes to VCC and ground.
Features
Typical operating frequency:40MHz
Typical propagation delay;clock to Q:18ns
Low quiescent current:80 mA maximum(74HCSeries)
Low input current:1 mA maximum
Wide power supply range:2–6V
Preview of the first 3 pages of the data sheet
Some Part number from the same manufacture
Same catergory
6 buyer reviews from Philippines
Jessica Morris
Length of registration:7 years
I recently purchased an IC MM74HCT74N from your store, and I am very pleased with its performance. It is a high-speed dual D-type flip-flop with reset, and it has been working great in my circuit. It is very reliable and has a low power consumption, which is great for my application. The functionality of the IC is exactly what I needed, and I am very satisfied with the quality of the product. I wo
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03/17/2023
Shelly
Length of registration:9 years
The service attitude is very good, the quality is good and very satisfied, the price is affordable, the workmanship is fine, it is worth buying.
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09/20/2022
CHRISTOS TSITSEKLIS
Length of registration:3 years
Very satisfied with
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08/23/2021
Johan Olfert BZE10569
Length of registration:3 years
Very satisfied with
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08/08/2020
ANDREY SEMYONOV
Length of registration:9 years
The goods are very satisfied, quality is very good, the seller is reliable, I recommend.
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11/11/2018
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Warranty
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MM74HC
MM74HC has several brands around the world that may have alternate names for MM74HC due to regional differences or acquisition. MM74HC may also be known as the following names:
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