74LV164 8-bit serial-in/parallel-out shift register Rev. 6 15 September 2021 Product data sheet 1. General description The 74LV164 is an 8-bit serial-in/parallel-out shift register. The device features two serial data inputs (DSA and DSB), eight parallel outputs (Q0 to Q7). Data is entered serially through DSA or DSB and either input can be used as an active HIGH enable for data entry through the other input. Data is shifted on the LOW-to-HIGH transition of the clock input (CP). A LOW on the master reset input (MR) clears the register and forces all outputs LOW, independently of other inputs. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess V . CC 2. Features and benefits Wide supply voltage range from 1.0 V to 5.5 V CMOS low power dissipation Optimized for low-voltage applications: 1.0 V to 3.6 V Accepts TTL input levels between V = 2.7 V and V = 3.6 V CC CC Typical V (output ground bounce): < 0.8 V at V = 3.3 V and T = 25 C OLP CC amb Typical V (output V undershoot): > 2 V at V = 3.3 V and T = 25 C OHV OH CC amb Gated serial data inputs Asynchronous master reset Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Complies with JEDEC standards: JESD8-7 (1.65 V to 1.95 V) JESD8-5 (2.3 V to 2.7 V) JESD8C (2.7 V to 3.6 V) JESD36 (4.5 V to 5.5 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Specified from -40 C to +80 C and from -40 C to +125 C. 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74LV164D -40 C to +125 C SO14 plastic small outline package 14 leads SOT108-1 body width 3.9 mm 74LV164PW -40 C to +125 C TSSOP14 plastic thin shrink small outline package 14 leads SOT402-1 body width 4.4 mm 74LV164BQ -40 C to +125 C DHVQFN14 plastic dual in-line compatible thermal enhanced SOT762-1 very thin quad flat package no leads 14 terminals body 2.5 3 0.85 mmNexperia 74LV164 8-bit serial-in/parallel-out shift register 4. Functional diagram SRG8 8 C1/ 9 R 1 3 & 1D 2 4 5 3 Q0 DSA 1 6 4 Q1 2 DSB 5 Q2 10 6 Q3 11 10 Q4 11 Q5 CP 8 12 12 Q6 13 MR 9 13 Q7 001aac423 001aac424 Fig. 1. Logic symbol Fig. 2. IEC logic symbol 1 DSA 2 DSB 8-BIT SERIAL- IN/PARALLEL- OUT 8 CP SHIFT REGISTER 9 MR 3 4 5 6 10 11 12 13 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 001aac425 Fig. 3. Functional diagram 5. Pinning information 5.1. Pinning 74LV164 terminal 1 index area DSB 2 13 Q7 Q0 3 12 Q6 74LV164 Q1 4 11 Q5 (1) Q2 5 10 Q4 V CC DSA 1 14 V CC 6 9 Q3 MR DSB 2 13 Q7 Q0 3 12 Q6 Q1 4 11 Q5 001aac429 Q2 5 10 Q4 Transparent top view Q3 6 9 MR (1) This is not a supply pin. There is no electrical or GND 7 8 CP mechanical requirement to solder the pad. In case 001aac422 soldered, the solder land should remain floating or connected to V . CC Fig. 4. Pin configuration SOT108-1 (SO14) and SOT402-1 (TSSOP14) Fig. 5. Pin configuration SOT762-1 (DHVQFN14) 74LV164 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 6 15 September 2021 2 / 15 GND 7 1 DSA CP 8 14 V CC