74HC590 8-bit binary counter with output register 3-state Rev. 3 24 February 2016 Product data sheet 1. General description The 74HC590 is an 8-bit binary counter with a storage register and 3-state outputs. The storage register has parallel (Q0 to Q7) outputs. The binary counter features master reset counter (MRC) and count enable (CE) inputs. The counter and storage register have separate positive edge triggered clock (CPC and CPR) inputs. If both clocks are connected together, the counter state is always one count ahead of the register. Internal circuitry prevents clocking from the clock enable. A ripple carry output (RCO) is provided for cascading. Cascading is accomplished by connecting RCO of the first stage to CE of the second stage. Cascading for larger count chains can be accomplished by connecting RCO of each stage to the counter clock (CPC) input of the following stage. 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 Counter and register have independent clock inputs Counter has master reset Complies with JEDEC standard no. 7A Multiple package options Input levels: For 74HC590: CMOS level ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22-C101C exceeds 2000 V Specified from 40 Cto+85 C and from 40 Cto+125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC590D 40 C to +125 C SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1 74HC590PW 40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads body SOT403-1 width 4.4 mm 74HC590BQ 40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal enhanced very thin SOT763-1 quad flat package no leads 16 terminals body 2.5 3.5 0.85 mm74HC590 Nexperia 8-bit binary counter with output register 3-state 4. Functional diagram & 7 0 ( 5(* , *5 67267(5 %,7 2( 6 67 7( 273878 F DD Fig 1. Functional diagram = 7 & 2 05& 4 4 4 4 4 4 4 & 4 DF D DF D Fig 2. Logic symbol Fig 3. IEC logic symbol 74HC590 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 3 24 February 2016 2 of 20 2( 05 4 4 4 4 4 &( 4 4 4 &7 5&2 5& &3& &35 &3& * &( 5 &7 & &35 (1 2( 4 4 4 4 4 4 4 4 2 5& &35 5& (5 %, 2817 1 5< %, &3& &(