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74HC/HCT280
General description
The 74HC/HCT280 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT280 are 9-bit parity generators or checkers commonly used to detect errors in high-speed data transmission or data retrieval systems. Both even and odd parity outputs are available for generating or checking even or odd parity up to 9 bits.
The even parity output (E ) is HIGH when an even number of data inputs (I0 to I8) are HIGH. The odd parity output (0 ) is HIGH when an odd number of data inputs are HIGH.
Expansion to larger word sizes is accomplished by tying the even outputs (E ) of up to nine parallel devices to the data inputs of the final stage. For a single-chip 16-bit even/odd parity generator/checker, see PC74HC/HCT7080.
Features
- Word-length easily expanded by cascading
- Similar pin configuration to the '180' for easy system up-grading
- Generates either odd or even parity for nine data bits
- Output capability: standard
- ICC category: MSI
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74HC280D | 74HC280D | 9337 138 80652 | Volume production | SOT108-1
(SO14) | Bulk Pack, CECC | Standard Marking | 74HC280D
| week 5, 2004 |
| 74HC280D | 74HC280D-T | 9337 138 80653 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13", CECC | Standard Marking | 74HC280D
| week 5, 2004 |
| 74HC280N | 74HC280N | 9336 690 80652 | Volume production | SOT27-1
(DIP14) | Bulk Pack, CECC | Standard Marking | 74HC280N
| Always Pb-free |
| 74HCT280D | 74HCT280D | 9337 138 90652 | Volume production | SOT108-1
(SO14) | Bulk Pack, CECC | Standard Marking | 74HCT280D
| week 5, 2004 |
| 74HCT280D | 74HCT280D-T | 9337 138 90653 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13", CECC | Standard Marking | 74HCT280D
| week 5, 2004 |
| 74HCT280DB | 74HCT280DB | 9351 898 70112 | Volume production | SOT337-1
(SSOP14) | Tube | Standard Marking | 74HCT280DB
| week 13, 2005 |
| 74HCT280DB | 74HCT280DB-T | 9351 898 70118 | Volume production | SOT337-1
(SSOP14) | Reel Pack, SMD, 13" | Standard Marking | 74HCT280DB
| week 13, 2005 |
| 74HCT280N | 74HCT280N | 9336 692 00652 | Volume production | SOT27-1
(DIP14) | Bulk Pack, CECC | Standard Marking | 74HCT280N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74HC280D | 9337 138 80652 | 0.4900 | not available | |||||
| 74HC280D | 9337 138 80653 | 0.4900 | Order samples | |||||
| 74HC280N | 9336 690 80652 | 0.4400 | Order samples | |||||
| 74HCT280D | 9337 138 90652 | 0.4900 | NA | AVNET ELECTRONICS MARKETING | 1,040 | 9/5/2008 | Buy online | not available |
| NA | DIGI-KEY CORPORATION | 1,092 | 9/3/2008 | Buy online | ||||
| 74HCT280D | 9337 138 90653 | 0.4900 | NA | MOUSER ELECTRONICS | 2,292 | 9/5/2008 | Buy online | Order samples |
| 74HCT280DB | 9351 898 70112 | 0.4900 | NA | DIGI-KEY CORPORATION | 1,092 | 9/3/2008 | Buy online | not available |
| 74HCT280DB | 9351 898 70118 | 0.4900 | Order samples | |||||
| 74HCT280N | 9336 692 00652 | 0.4400 | Order samples |
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| 74HC280D | SOT108-1
(SO14) | 9-Bit Odd/Even Parity Generator/Checker | 17@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC280N | SOT27-1
(DIP14) | 9-Bit Odd/Even Parity Generator/Checker | 17@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HCT280D | SOT108-1
(SO14) | 9-Bit Odd/Even Parity Generator/Checker; TTL Enabled | 18 | 4.5-5.5V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT280DB | SOT337-1
(SSOP14) | 9-Bit Odd/Even Parity Generator/Checker; TTL Enabled | 18 | 4.5-5.5V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT280N | SOT27-1
(DIP14) | 9-Bit Odd/Even Parity Generator/Checker; TTL Enabled | 18 | 4.5-5.5V | 14 | Low Power | TTL | +/- 4 mA |
Similar products
74HC/HCT280 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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