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DM74LS165 8-Bit Parallel In/Serial Output Shift Registers
August 1986 Revised March 2000
DM74LS165 8-Bit Parallel In/Serial Output Shift Registers
General Description
This device is an 8-bit serial shift register which shifts data in the direction of QA toward QH when clocked. Parallel-in access is made available by eight individual direct data inputs, which are enabled by a low level at the shift/load input. These registers also feature gated clock inputs and complementary outputs from the eighth bit. Clocking is accomplished through a 2-input NOR gate, permitting one input to be used as a clock-inhibit function. Holding either of the clock inputs HIGH inhibits clocking, and holding either clock input LOW with the load input HIGH enables the other clock input.