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74F280B
Datasheet
General description
The 74F280B is a 9-bit Parity Generator or Checker commonly used to detect errors in high speed data transmission or data retrieval systems. Both Even (åE) and Odd (åO) parity outputs are available for generating or checking even or odd parity on up to 9 bits.
The Even (åE) parity output is High when an even number of Data inputs (I0 - I8) are High. The Odd (åO) parity output is High when an odd number of Data inputs are High.
Expansion to larger word sizes is accomplished by tying the Even (E) outputs of up to nine parallel devices to the data inputs of the final stage. This expansion scheme allows an 81-bit data word to be checked in less than 20ns.
Features
- High-impedance NPN base inputs for reduced loading(20A in Low and High states)
- Buffered inputs - one normalized load
- Word length easily expanded by cascading
- Industrial temperature range available (-40C to +85C)
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| I74F280BD | I74F280BD | 9350 295 20602 | Volume production | SOT108-1
(SO14) | Tube (Signetics) | Standard Marking | I74F280BD
| week 5, 2004 |
| I74F280BD | I74F280BD-T | 9350 295 20623 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | I74F280BD
| week 5, 2004 |
| I74F280BN | I74F280BN | 9350 295 30602 | Volume production | SOT27-1
(DIP14) | Tube (Signetics) | Standard Marking | I74F280BN
| Always Pb-free |
| N74F280BD | N74F280BD-T | 9338 290 10623 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F280BD
| week 5, 2004 |
| N74F280BD | N74F280BD | 9338 290 10602 | Volume production | SOT108-1
(SO14) | Tube (Signetics) | Standard Marking | N74F280BD
| week 5, 2004 |
| N74F280BN | N74F280BN | 9338 290 00602 | Volume production | SOT27-1
(DIP14) | Tube (Signetics) | Standard Marking | N74F280BN
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| I74F280BD | 9350 295 20602 | not available | ||||||
| I74F280BD | 9350 295 20623 | Order samples | ||||||
| I74F280BN | 9350 295 30602 | Order samples | ||||||
| N74F280BD | 9338 290 10623 | 0.2500 | Order samples | |||||
| N74F280BD | 9338 290 10602 | 0.2500 | not available | |||||
| N74F280BN | 9338 290 00602 | 0.2700 | NA | AVNET ELECTRONICS MARKETING | 44 | 7/3/2008 | 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 | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| I74F280BD | SOT108-1
(SO14) | 9-Bit Odd/Even Parity Generator/Checker | 7 | 4.5-5.5 V | 14 | TTL | -1/+20 mA |
| I74F280BN | SOT27-1
(DIP14) | 9-Bit Odd/Even Parity Generator/Checker | 7 | 4.5-5.5 V | 14 | TTL | -1/+20 mA |
| N74F280BD | SOT108-1
(SO14) | 9-Bit Odd/Even Parity Generator/Checker | 7 | 4.5-5.5 V | 14 | TTL | -1/+20 mA |
| N74F280BN | SOT27-1
(DIP14) | 9-Bit Odd/Even Parity Generator/Checker | 7 | 4.5-5.5 V | 14 | TTL | -1/+20 mA |
Similar products
74F280B 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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