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DM74LS161A

Synchronous 4-Bit Binary Counters

GeneralDescription Thesesynchronous,presettablecountersfeatureaninternalcarrylook-aheadforapplicationinhigh-speedcountingdesigns.TheDM74LS161AandDM74LS163Aare4-bitbinarycounters.ThecarryoutputisdecodedbymeansofaNORgate,thuspreventingspikesduringthenormal

DM74LS161A

Synchronous 4-Bit Binary Counters

DM74LS161A

Synchronous 4-Bit Binary Counters

DM74LS161A

Synchronous 4-Bit Binary Counters;

DM74LS161A

Synchronous 4-Bit Binary Counters;

DM74LS161AM

Synchronous 4-Bit Binary Counters; ■Synchronously programmable\n■Internal look-ahead for fast counting\n■Carry output for n-bit cascading\n■Synchronous counting\n■Load control line\n■Diode-clamped inputs\n■Typical propagation time, clock to Q output 14 ns\n■Typical clock frequency 32 MHz\n■Typical power dissipation 93 mW;

General Description\nThese synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The DM74LS161A and DM74LS163A are 4-bit binary counters. The carry output is decoded by means of a NOR gate, thus preventing spikes during the normal counting mode of operation. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation eliminates the output counting\nspikes which are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four flip-flops on the rising (positive-going) edge of the clock input waveform.

DM74LS161AM

Synchronous 4-Bit Binary Counters

GeneralDescription Thesesynchronous,presettablecountersfeatureaninternalcarrylook-aheadforapplicationinhigh-speedcountingdesigns.TheDM74LS161AandDM74LS163Aare4-bitbinarycounters.ThecarryoutputisdecodedbymeansofaNORgate,thuspreventingspikesduringthenormal

DM74LS161AN

Synchronous 4-Bit Binary Counters

GeneralDescription Thesesynchronous,presettablecountersfeatureaninternalcarrylook-aheadforapplicationinhigh-speedcountingdesigns.TheDM74LS161AandDM74LS163Aare4-bitbinarycounters.ThecarryoutputisdecodedbymeansofaNORgate,thuspreventingspikesduringthenormal

DM74LS161A_98

Synchronous 4-Bit Binary Counters

DM74LS161AE

Synchronous 4-Bit Binary Counters