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74LV165
74LV165 8-bit parallel-in/serial-out shift register Rev. 6 — 19 February 2014 Product data sheet 1. General description The 74LV165 is an 8-bit parallel-load or serial-in shift register with complementary serial outputs (Q7 and Q7) available from the last stage. When the parallel-load input (PL) is LOW, parallel data from the inputs D0 to D7 are loaded into the register asynchronously. When input PL is HIGH, data enters the register serially at the input DS. It shifts one place to the right (Q0 Q1 Q2, etc.) with each positive-going clock transition. This feature allows parallel-to-serial converter expansion by tying the output Q7 to the input DS of the succeeding stage. The clock input is a gate-OR structure which allows one input to be used as an active LOW clock enable input (CE) input. The pin assignment for the inputs CP and CE is arbitrary and can be reversed for layout convenience. The LOW-to-HIGH transition of the input CE should only take place while CP HIGH for predictable operation. Either the CP or the CE should be HIGH before the LOW-to-HIGH transition of PL to prevent shifting the data when PL is activated. 2. Features and benefits Wide supply voltage range from 1.0 V to 5.5 V Synchronous parallel-to-serial applications Optimized for low voltage applications: 1.0 V to 3.6 V Synchronous serial input for easy expansion Latch-up performance exceeds 250 mA 5.5 V tolerant inputs/outputs Direct interface with TTL levels (2.7 V to 3.6 V) Power-down mode Complies with JEDEC standards: JESD8-5 (2.3 V to 2.7 V) JESD8B/JESD36 (2.7 V to 3.6 V) JESD8-1A (4.5 V to 5.5 V) ESD protection: HBM JESD22-A114-A exceeds 2000 V MM JESD22-A115-A exceeds 200 V Specified from 40 C to +85 C and from 40 C to +125 C
TI
Texas Instruments Incorporated
U.S.A
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