74LV165A 8-bit parallel-in/serial-out shift register Rev. 4 28 March 2014 Product data sheet 1. General description The 74LV165A 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. Schmitt-trigger action at all inputs, makes the circuit tolerant for slower input rise and fall times. It is fully specified for partial-power-down applications using I . The I circuitry OFF OFF disables the output, preventing the damaging current backflow through the device when it is powered down. 2. Features and benefits Wide supply voltage range from 2.0 V to 5.5 V Synchronous parallel-to-serial applications Synchronous serial input for easy expansion Latch-up performance exceeds 250 mA CMOS LOW power consumption 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 Cto+85 C74LV165A Nexperia 8-bit parallel-in/serial-out shift register 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74LV165AD 40 C to +85 C SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1 74LV165APW 40 C to +85 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm 4. Functional diagram 65* & >/2 * >6+,)7 & 4 4 3/ PQD DDD Fig 1. Logic symbol Fig 2. IEC logic symbol 3/ 4 ,18//(/ 6(55 2 , / 7 3 4 DDD Fig 3. Functional diagram 74LV165A All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 28 March 2014 2 of 19 &( &3 %,7 6+,)7 5(*,67(5 6 &( &3 6