Select site:
- English
74F579
Datasheet
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 number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| N74F579D | N74F579D | 9338 403 70602 | Volume production | SOT163-1
(SO20) | Tube (Signetics) | Standard Marking | N74F579D
| week 4, 2004 |
| N74F579D | N74F579D-T | 9338 403 70623 | Volume production | SOT163-1
(SO20) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F579D
| week 4, 2004 |
| N74F579N | N74F579N | 9337 811 30602 | Volume production | SOT146-1
(DIP20) | Tube (Signetics) | Standard Marking | N74F579N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| N74F579D | 9338 403 70602 | 1.3700 | NA | ARROW ELECTRONICS | 814 | 10/6/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 14 | 10/3/2008 | Buy online | ||||
| N74F579D | 9338 403 70623 | 1.3700 | Order samples | |||||
| N74F579N | 9337 811 30602 | 1.3700 | NA | ARROW ELECTRONICS | 683 | 10/6/2008 | Buy online | Order samples |
Technical documents
Application Notes
AN202_1;
Testing and specifying FAST logic (01-Jun-87)
AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)
AN216_2;
Arbitration in shared resource systems (18-Jul-88)
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| N74F579D | SOT163-1
(SO20) | 8-Bit Bidirectional Binary Counter; 20-Pin (3-State) | 115 | 7.5 | 4.5-5.5 V | 20 | TTL | -3/+24 mA |
| N74F579N | SOT146-1
(DIP20) | 8-Bit Bidirectional Binary Counter; 20-Pin (3-State) | 115 | 7.5 | 4.5-5.5 V | 20 | TTL | -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.
Disclaimer
The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.
The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.
As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.
- http://www.philips.semiconductors.com use http://www.nxp.com
- http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
- sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)
The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-
If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.