最新无码a∨在线观看,一本av高清一区二区三区,亚洲熟妇色l20p,宅男噜噜69av,中出あ人妻熟女中文字幕

74HC161DB

74HC161DB - Presettable synchronous 4-bit binary counter; asynchronous reset; ·Complies with JEDEC standard no. 7A\n·Input levels:·For 74HC161: CMOS level\n;

Presettable synchronous 4-bit binary counter; asynchronous reset - The 74HC161 is a synchronous presettable binary counter with an internal look-head carry. Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive-going edge of the clock (CP). The outputs (Q0 to Q3) of the counters may be preset HIGH or LOW. A LOW at the parallel enable input (PE) disables the counting action and causes the data at the data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock. Preset takes place regardless of the levels at count enable inputs (CEP and CET). A LOW at the master reset input (MR) sets Q0 to Q3 LOW regardless of the levels at input pins CP, PE, CET and CEP (thus providing an asynchronous clear function). The look-ahead carry simplifies serial cascading of the counters. Both CEP and CET must be HIGH to count. The CET input is fed forward to enable the terminal count output (TC). The TC output thus enabled will produce a HIGH output pulse of a duration approximately equal to a HIGH output of Q0. This pulse can be used to enable the next cascaded stage. The maximum clock frequency for the cascaded counters is determined by the CP to TC propagation delay and CEP to CP set-up time, according to the following formula: fmax= 1 / ( tP(max)(CPtoTC) + tSU(CEPtoCP) ). Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

74HC161DB

Presettable synchronous 4-bit binary counter; asynchronous reset

GENERALDESCRIPTION The74HC/HCT161arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. FEATURES ?Synchronouscountingandloading ?Twocountenableinputsforn-bitcascading ?Positive

ETC

74HC161DB,112

Package：16-SSOP（0.209"，5.30mm 寬）；包裝：管件 類別：集成電路（IC） 計數(shù)器，除法器 描述：IC SYNC 4BIT BINAR COUNTR 16SSOP

ETC

74HC161DB,118

Package：16-SSOP（0.209"，5.30mm 寬）；包裝：管件 類別：集成電路（IC） 計數(shù)器，除法器 描述：IC SYNC 4BIT BINARY COUNT 16SSOP

ETC

74HC161N

Presettablesynchronous4-bitbinarycounter;asynchronousreset

GENERALDESCRIPTION The74HC/HCT161arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. FEATURES ?Synchronouscountingandloading ?Twocountenableinputsforn-bitcascading ?Positive

ETC

74HC161PW

Presettablesynchronous4-bitbinarycounter;asynchronousreset

GENERALDESCRIPTION The74HC/HCT161arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. FEATURES ?Synchronouscountingandloading ?Twocountenableinputsforn-bitcascading ?Positive

ETC

74HC161PW

Presettablesynchronous4-bitbinarycounter;asynchronousreset

1.Generaldescription The74HC161isasynchronouspresettablebinarycounterwithaninternallook-headcarry. Synchronousoperationisprovidedbyhavingallflip-flopsclockedsimultaneouslyonthepositivegoing edgeoftheclock(CP).Theoutputs(Q0toQ3)ofthecountersmaybepresetHI

CD74HC161

High-SpeedCMOSLogicPresettableCounters

CD74HC161

HighSpeedCMOSLogicPresettableCounters

CD74HC161

High-SpeedCMOSLogicPresettableCounters

Features ?’HC161,’HCT1614-BitBinaryCounter, AsynchronousReset ?’HC163,’HCT1634-BitBinaryCounter, SynchronousReset ?SynchronousCountingandLoading ?TwoCountEnableInputsforn-BitCascading ?Look-AheadCarryforHigh-SpeedCounting ?Fanout(OverTemperatureRange) -Sta