74AHCT164BQ,115

74AHC164 74AHCT164 8-bit serial-in/parallel-out shift register Rev. 4 11 June 2020 Product data sheet 1. General description The 74AHC164 74AHCT164 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 are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments. 2. Features Wide supply voltage range from 2.0 V to 5.5 V Overvoltage tolerant inputs to 5.5 V High noise immunity CMOS low power dissipation Balanced propagation delays All inputs have Schmitt-trigger actions Input levels: For 74AHC164: CMOS level For 74AHCT164: TTL level ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101C exceeds 1000 V Latch-up performance exceeds 100 mA per JESD 78 Class II Level A Multiple package options Specified from -40 C to +85 C and from -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74AHC164D -40 C to +125 C SO14 plastic small outline package 14 leads SOT108-1 body width 3.9 mm 74AHCT164D 74AHC164PW -40 C to +125 C TSSOP14 plastic thin shrink small outline package SOT402-1 14 leads body width 4.4 mm 74AHCT164PW 74AHC164BQ -40 C to +125 C DHVQFN14 plastic dual in-line compatible thermal SOT762-1 enhanced very thin quad flat package no leads 74AHCT164BQ 14 terminals body 2.5 3 0.85 mmNexperia 74AHC164 74AHCT164 8-bit serial-in/parallel-out shift register 4. Functional diagram 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. 1. 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 CP 8 11 Q5 12 12 Q6 13 13 Q7 MR 9 001aac423 001aac424 Fig. 2. Logic symbol Fig. 3. IEC logic symbol 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. Logic diagram 74AHC AHCT164 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2020. All rights reserved Product data sheet Rev. 4 11 June 2020 2 / 16