74HC164DB,112 Nexperia

74HC164 74HCT164 8-bit serial-in, parallel-out shift register Rev. 10 1 September 2021 Product data sheet 1. General description The 74HC164 74HCT164 is an 8-bit serial-in/parallel-out shift register. The device features two serial data inputs (DSA and DSB), eight parallel data 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 transitions of the clock (CP) input. 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 of V . CC 2. Features and benefits Wide supply voltage range from 2.0 to 6.0 V CMOS low power dissipation High noise immunity Input levels: For 74HC164: CMOS level For 74HCT164: TTL level Gated serial data inputs Asynchronous master reset Complies with JEDEC standards JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V) Latch-up performance exceeds 100 mA per JESD 78 Class II Level B ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 C to +85 C and -40 C to +125 C. 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC164D -40 C to +125 C SO14 plastic small outline package 14 leads SOT108-1 body width 3.9 mm 74HCT164D 74HC164PW -40 C to +125 C TSSOP14 plastic thin shrink small outline package 14 leads SOT402-1 body width 4.4 mm 74HCT164PW 74HC164BQ -40 C to +125 C DHVQFN14 plastic dual in-line compatible thermal enhanced SOT762-1 very thin quad flat package no leads 14 terminals 74HCT164BQ body 2.5 3 0.85 mmNexperia 74HC164 74HCT164 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. Logic diagram DSA D Q D Q D Q D Q D Q D Q D Q D Q CP CP CP CP CP CP CP CP DSB FF1 FF2 FF3 FF4 FF5 FF6 FF7 FF8 R R R R R R R R D D D D D D D D CP MR Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 001aac616 Fig. 4. Functional diagram 74HC HCT164 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 10 1 September 2021 2 / 16