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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Internal Look-Ahead for Fast Counting. Load, clock or enable T. The carry look-ahead circuitry provides for cascading counters for. Instrumental in accomplishiing this function are two counter-enable inputs and a ripple carry output. High Level Input Current.

Width of reset pulse. Sequence illustrated in waveforms: Reset outputs to zero. The ripple carry output thus enabled will produce a high-level output pulse with a duration approximately equal to daatasheet high level portion of the Q A output. Low Level Input Voltage. 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.

A buffered clock input triggers the four flip-flops on the rising positive- going edge of the clock input wave form. Propagation Delay, Enable T to Ripple carry. Instrumental in accomplishiing this function are two counter-enable inputs and a ripple carry output. Output Short Circuit Current. Data inputs P0, P1, P2, 74ls61.

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Enable P or T. High Level Output Current.

74LS161 Datasheet PDF

Low Level Output Current. As presetting is synchronous setting up a low. Not more than one output should be shorted at a time, and the duration should not exceed one second. The ripple carry output thus enabled will produce dahasheet high-level output pulse with a duration approximately equal to the high level portion of the Q. Maximum Ratings are those values beyond which damage to the device may occur.

74LS (SLS) PDF技术资料下载 74LS 供应信息 IC Datasheet 数据表 (1/5 页)

This counter is fully programmable; that is the outputs may be. Propagation Delay, Clock load input high to Any Q. Width of clock pulse. The carry look-ahead circuitry provides 74lz161 cascading counters for n-bit synchronous applications without additional gating. All outputs high V. Count to thirteen, fourteen, fifteen, zero, one, and two. This mode of operation eliminates the output counting spikes that.

Synchronous 4 Bit Counters; Binary.

74LS datasheet, Pinout ,application circuits Synchronous 4 Bit Counters; Binary, Direct Reset

Synchronous operation 74,s161 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.

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This counter is fully programmable; that is the outputs may be preset to either level. 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.

Search field Part name Part description. The ripple carry output thus enabled. Preset to binary twelve.

Fairchild Semiconductor

Low Level Output Voltage. High Level Input Voltage. Low Level Input Current. All diodes are 1N or 1N The high-level overflow ripple carry pulse can be enable successive cascaded stages.

Functional operation should be restricted to the Recommended 74lx161 Conditions.

A buffered clock input triggers the four flip-flops on the rising positive- going edge of the clock input wave form. 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 74ks161 the levels of the enable inputs. The carry look-ahead circuitry provides for cascading counters for.