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

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Sequence illustrated in waveforms: High Level Input Voltage. Low Level Output Voltage. Low Level Input Voltage. Synchronous operation is provided by having all flip-flops clocked. The high-level overflow ripple carry pulse can be enable successive cascaded stages. 774ls161

Search field Part name Part description. Internal Look-Ahead for Fast Counting.

74LS Datasheet(PDF) – System Logic Semiconductor

Load, clock or enable T Reset. Hold time at any input. Dayasheet mode of operation eliminates the output counting spikes that. As presetting is synchronous setting up a low.

Count to thirteen, fourteen, fifteen, zero, one, and two. Propagation Delay, Enable T to Ripple carry. High Level Input Current. This counter is fully programmable; that is the outputs may be. A buffered clock input triggers the four 74ls16 on the rising positive- going edge of the clock input wave form.

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Synchronous 4 Bit Counters; Binary, Direct Reset

Propagation Delay, Reset to Any Q. Maximum Ratings are those values beyond which damage to the device may occur. As presetting is synchronous setting up a low level at the load datashet 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 carry look-ahead circuitry provides for cascading counters for 74os161 synchronous applications without additional gating.

Propagation Delay, Clock to Ripple carry. This synchronous, presettable counter features an internal carry. 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.

Width of clock pulse. Not more than one output should be shorted at a time, and the 74la161 should not exceed one second. This synchronous, presettable counter features an internal carry. The carry look-ahead circuitry provides for cascading counters for. Instrumental in 74ls16 this function are two counter-enable inputs and a ripple carry output. Propagation Delay, Clock load input low to Any Q.

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Low Level Input Current. The ripple carry output thus enabled. Data or enable P. All outputs high V. 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.

Output Short Circuit Current. Preset to binary twelve. This counter datazheet fully programmable; that is the outputs may be preset to either level. The carry look-ahead circuitry provides for cascading counters for. 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.

Fairchild Semiconductor – datasheet pdf

All diodes are 1N or 1N Instrumental in accomplishiing this function are two counter-enable inputs and a datasneet carry output. High Level Output Voltage. Carry Output for n-Bit Cascading. Width of reset pulse. Functional operation should be restricted to the Recommended Operating Conditions. This mode of operation eliminates the output counting spikes that. Reset outputs to zero.