SN54HC161 Datasheet | Texas Instruments

description /ordering information - No internal connection These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The ’HC161 devices are 4-bit binary counters. 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 (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with synchronous (ripple-clock) counters. A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform. ORDERING INFORMATION PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP - N Tube of 25 SN74HC161N SN74HC161N Tube of 40 SN74HC161D - 40°C to 85°C SOIC - D SOP - NS Reel of 2500 Reel of 250 Reel of 2000 SN74HC161DR SN74HC161DT SN74HC161NSR HC161 HC161 Tube of 90 SN74HC161PW TSSOP - PW Reel of 2000 Reel of 250 SN74HC161PWR SN74HC161PWT HC161 CDIP - J Tube of 25 SNJ54HC161J SNJ54HC161J - 55°C to 125°C CFP - W Tube of 150 SNJ54HC161W...