74HCT259BQ

74HC259 74HCT259 8-bit addressable latch Rev. 6 2 February 2016 Product data sheet 1. General description The 74HC259 74HCT259 is an 8-bit addressable latch. The device features four modes of operation. In the addressable latch mode, data on the D input is written into the latch addressed by the inputs AO to A3. The addressed latch will follow the data input, non-addressed latches will retain their previous states. In memory mode, all latches retain their previous states and are unaffected by the data or address inputs. In the 3-to-8 decoding or demultiplexing mode, the addressed output follows the D input and all other outputs are LOW. In the reset mode, all outputs are forced LOW and unaffected by the data or address 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 Combined demultiplexer and 8-bit latch Serial-to-parallel capability Output from each storage bit available Random (addressable) data entry Easily expandable Common reset input Useful as a 3-to-8 active HIGH decoder Complies with JEDEC standard no. 7A Input levels: For 74HC259: CMOS level For 74HCT259: TTL level ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V CDM JESD22E exceeds 1000 V Multiple package options Specified from 40 C to +85 C and from 40 C to +125 C74HC259 74HCT259 NXP Semiconductors 8-bit addressable latch 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC259D 40 C to +125 C SO16 plastic small outline package 16 leads SOT109-1 body width 3.9 mm 74HCT259D 74HC259DB 40 C to +125 C SSOP16 plastic shrink small outline package 16 leads body SOT338-1 width 5.3 mm 74HCT259DB 74HC259PW 40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm 74HCT259PW 74HC259BQ 40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal enhanced very SOT763-1 thin quad flat package no leads 16 terminals 74HCT259BQ body 2.5 3.5 0.85 mm 4. Functional diagram = * * /( * Q P D P Q Fig 1. Logic symbol Fig 2. IEC logic symbol 74HC HCT259 All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2016. All rights reserved. Product data sheet Rev. 6 2 February 2016 2 of 21 D 05 4 4 4 4 4 4 4 4 5 &