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Datasheet

74F579
(Product Specification)
18-Dec-00, 14 pages, 124 kB

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General description

The 74F579 is a fully synchronous 8-stage Up/Down Counter with multiplexed 3-State I/O ports for bus-oriented applications. It features a preset capability for programmable operation, carry look-ahead for easy cascading and a U/D input to control the direction of counting. All state changes, except for the case of asynchronous reset, are initiated by the rising edge of the clock. TC output is not recommended for use as a clock or asynchronous reset due to the possibility of decoding spikes.

Features

  • Fully synchronous operation
  • Multiplexed 3-State I/O ports for bus oriented applications
  • Built in cascading carry capability
  • U/D pin to control direction of counting
  • Separate pins for Master reset and Synchronous operation
  • Center power pins to reduce effects of package inductance
  • Count frequency 115 MHz Typ
  • Supply current 100 mA Typ
  • See 74F269 for 24-pin separate I/O port version
  • See 74F779 for 16-pin version


Products/packages

Type numberNorth American Type numberOrdering code (12NC)Product statusPackagePackingMarkingChemical contentLeadfree conversion date
N74F579DN74F579D9338 403 70602Volume productionSOT163-1
(SO20)
Tube (Signetics)Standard MarkingN74F579D
week 4, 2004
N74F579DN74F579D-T9338 403 70623Volume productionSOT163-1
(SO20)
Reel Pack, SMD, 13" (Signetics)Standard MarkingN74F579D
week 4, 2004
N74F579NN74F579N9337 811 30602Volume productionSOT146-1
(DIP20)
Tube (Signetics)Standard MarkingN74F579N
Always Pb-free

Pricing/ordering/availability

Type numberOrdering code(12NC)Indicative price/unit($)RegionDistributorIn stockInventory dateBuy onlineSamples
N74F579D9338 403  70602  1.3700NAARROW ELECTRONICS81410/6/2008 Buy online not available
   NAAVNET ELECTRONICS MARKETING1410/3/2008 Buy online  
N74F579D9338 403  70623  1.3700      Order samples
N74F579N9337 811  30602  1.3700NAARROW ELECTRONICS68310/6/2008 Buy online Order samples

Block diagrams/pinning

Parametrics/similar products

Type numberPackageDescriptionFmax(MHz)Propagation Delay(ns)VoltageNo. of PinsLogic Switching LevelsOutput Drive Capability
N74F579DSOT163-1
(SO20)
8-Bit Bidirectional Binary Counter; 20-Pin (3-State)1157.54.5-5.5 V20TTL-3/+24 mA
N74F579NSOT146-1
(DIP20)
8-Bit Bidirectional Binary Counter; 20-Pin (3-State)1157.54.5-5.5 V20TTL-3/+24 mA

Similar products

74F579 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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