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74F259
Datasheet
General description
The 74F259 addressable latch has four distinct modes of operation which are selectable by controlling the Master Reset (MR) and Enable (E) inputs . In the addressable latch mode, data at the Data inputs is written into the addressed latches. The addressed latches will follow the Data input with all unaddressed latches remaining in their previous states. In the store mode, all latches remain in their previous states and are unaffected by the Data or Address inputs. To eliminate the possibility of entering erroneous data in the latches, the enable should be held High (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode (MR=E=Low), addressed outputs will follow the level of the Data input, with all other outputs Low. In the Master Reset mode, all outputs are Low and unaffected by the Address and Data inputs.
Features
- Combines 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 1-of-8 active-High decoder
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| N74F259D | N74F259D | 9337 790 80602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | N74F259D
| week 6, 2004 |
| N74F259D | N74F259D-T | 9337 790 80623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F259D
| week 6, 2004 |
| N74F259N | N74F259N | 9337 312 90602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | N74F259N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| N74F259D | 9337 790 80602 | 1.5700 | NA | AVNET ELECTRONICS MARKETING | 1,510 | 8/29/2008 | Buy online | not available |
| NA | DIGI-KEY CORPORATION | 572 | 8/28/2008 | Buy online | ||||
| N74F259D | 9337 790 80623 | 1.5700 | Order samples | |||||
| N74F259N | 9337 312 90602 | 1.5700 | NA | DIGI-KEY CORPORATION | 157 | 8/28/2008 | Buy online | Order samples |
Applications
Related applications
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
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 | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| N74F259D | SOT109-1
(SO16) | 8-Bit Addressable Latch | 7.0 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F259N | SOT38-4
(DIP16) | 8-Bit Addressable Latch | 7.0 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
Similar products
74F259 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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