HC165

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community SN54HC165, SN74HC165 SCLS116H – DECEMBER 1982 – REVISED DECEMBER 2015 SNx4HC165 8-Bit Parallel-Load Shift Registers 1 Features 1 Wide Operating Voltage Range of 2 V to 6 V Outputs Can Drive Up to 10 LSTTL Loads Low Power Consumption, 80-µA Maximum ICC Typical tpd = 13 ns ±4-mA Output Drive at 5 V Low Input Current of 1 µA Maximum Complementary Outputs Direct Overriding Load (Data) Inputs Gated Clock Inputs Parallel-to-Serial Data Conversion On Products Compliant to MIL-PRF-38535, All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters. 2 Applications Programable Logic Controllers Appliances Video Display Systems Output Expander Keyboards 3 Description The SNx4HC165 devices are 8-bit parallel-load shift registers that, when clocked, shift the data toward a serial (QH) output. Parallel-in access to each stage is provided by eight individual direct data (A−H) inputs that are enabled by a low level at the shift/load (SH/LD) input. The SNx4HC165 devices also feature a clock-inhibit (CLK INH) function and a complementary serial (QH) output. Clocking is accomplished by a low-to-high transition of the clock (CLK) input while SH/LD is held high and CLK INH is held low. The functions of CLK and CLK INH are interchangeable. Because a low CLK and a low-to-high transition of ...