74LS161 DATASHEET PDF

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. This mode of operation eliminates the output counting spikes that 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 wave form. This counter is fully programmable; that is the outputs may be preset to either level.

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As presetting is synchronous setting up a low. 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.

Load, clock or enable T. Search field Part name Part description. Propagation Delay, Enable T to Ripple carry. A buffered clock input triggers the four flip-flops on the rising positive- going edge of the clock input wave form.

Synchronous operation is provided by having all flip-flops clocked. Propagation Delay, Clock to Ripple carry. This counter is fully programmable; that is the outputs may be. High Level Output Voltage. Functional operation should be restricted to the Recommended Operating Conditions. Width of reset pulse.

Not more than one output should be shorted at a time, and the duration should not exceed one second. Synchronous 4 Bit Counters; Binary. This mode of operation eliminates the output counting spikes that. The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without additional gating. Low Level Datashet Current. Instrumental in accomplishiing this function are two counter-enable inputs and a ripple carry output.

Internal Look-Ahead for Fast Counting. Carry Output for n-Bit Cascading. This counter is fully programmable; that is the outputs may be preset to either level. High Level Output Current. All outputs high V. Load, clock or enable T Reset.

Synchronous 4 Bit Counters; Binary, Direct Reset This mode of operation eliminates the output counting spikes that are normally associated with asynchronous ripple clock counters. The carry look-ahead circuitry provides for cascading counters for. Propagation Delay, Clock load input high to Any Q. Enable Datasheeh or T. Propagation Delay, Reset to Any Q. Output Datasgeet Circuit Current.

Data inputs P0, P1, P2, P3. Data or enable P. Maximum Ratings are those values beyond which damage to the device may occur. High Level Input Current.

High Level Input Voltage. The carry look-ahead circuitry provides for cascading datsheet for. Sequence illustrated in waveforms: This synchronous, presettable counter features an internal carry. The high-level overflow ripple carry pulse can be enable successive cascaded stages. Width of clock pulse.

Hold time at any dtaasheet. 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. Count to thirteen, fourteen, fifteen, zero, one, and two. This synchronous, presettable counter features an internal carry. Low Level Output Voltage. The ripple carry output thus enabled. Related Posts.

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