74LS161 DATASHEET PDF

These synchronous, presettable counters feature an inter- nal carry look-ahead for application in high-speed counting designs. The DM74LSA and. 74LS Synchronous 4-bit Binary Counters. These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed. System Logic Semiconductor 74LS datasheet, Synchronous 4 Bit Counters; Binary/ Direct Reset (3-page), 74LS datasheet, 74LS pdf, 74LS

Author: Mezidal Moogular
Country: Tanzania
Language: English (Spanish)
Genre: Health and Food
Published (Last): 1 December 2010
Pages: 302
PDF File Size: 18.70 Mb
ePub File Size: 6.99 Mb
ISBN: 187-3-61768-686-4
Downloads: 80687
Price: Free* [*Free Regsitration Required]
Uploader: Bazshura

This mode of operation eliminates the output counting spikes that. High Level Input Current. Instrumental daatasheet accomplishiing this function are two counter-enable inputs and a ripple carry output.

Fairchild Semiconductor

Width of clock pulse. Low Level Output Voltage. The ripple carry output thus enabled. High Level Output Current. Data or enable P. Load, clock or enable T Reset. Preset to binary twelve. Count to thirteen, fourteen, fifteen, zero, one, and two. The carry look-ahead circuitry provides for cascading counters for.

  KLANTPROFIEL WFT PDF

All diodes are 1N or 1N Enable P or T. High Level Output Voltage. This mode of operation eliminates the output counting spikes that. High Level Input Voltage.

Synchronous operation is provided by having all flip-flops clocked. Search field Part name Part description. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change conicident with each other when so instructed by the count-enable inputs and internal gating.

All outputs high V.

74LS Datasheet(PDF) – Fairchild Semiconductor

Sequence illustrated in waveforms: This mode of operation eliminates the output counting spikes that are normally associated with asynchronous ripple clock counters. Propagation Delay, Clock load input low to Any Q. This synchronous, presettable counter features an internal carry. This counter is fully programmable; that is the outputs may be preset to either level.

The high-level overflow ripple carry pulse can be enable successive cascaded stages. Data inputs P0, P1, P2, P3. Synchronous 4 Bit Counters; Binary.

The carry datasheett circuitry provides for cascading counters for n-bit synchronous applications without additional gating. Functional operation should be restricted to the Recommended Operating Conditions. This counter is fully programmable; that is the outputs may be.

  ANATOMIA VETERINARIA SISSON PDF

As presetting is synchronous setting up a low level at the load input disables the counter and causes the outputs to agree with the setup data after the next clock pulse regardless of the levels of the enable inputs.

The ripple carry output thus enabled will produce a high-level output pulse with a duration approximately equal to the high level portion of the Q. Low Level Input Voltage.

Propagation Delay, Reset to Any Q. The ripple carry output thus enabled will produce a high-level output pulse with a duration approximately equal to the high level portion of the Q A output. Reset outputs to zero.

Propagation Delay, Clock to Ripple carry. Propagation Delay, Datasheeh T to Ripple carry. Low Level Input Current.