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74F521
Datasheet
General description
The 74F521 is an expandable 8-bit comparator. It compares two words of up to 8 bits each and provides a Low output when the two words match bit for bit. The expansion input IA=B also serves as an active-Low enable input.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| N74F521D | N74F521D | 9337 395 80602 | Volume production | SOT163-1
(SO20) | Tube (Signetics) | Standard Marking | N74F521D
| week 30, 2004 |
| N74F521D | N74F521D-T | 9337 395 80623 | Volume production | SOT163-1
(SO20) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F521D
| week 30, 2004 |
| N74F521N | N74F521N | 9336 539 10602 | Volume production | SOT146-1
(DIP20) | Tube (Signetics) | Standard Marking | N74F521N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| N74F521D | 9337 395 80602 | 0.3400 | NA | ARROW ELECTRONICS | 1,385 | 7/4/2008 | Buy online | not available |
| N74F521D | 9337 395 80623 | 0.3400 | Order samples | |||||
| N74F521N | 9336 539 10602 | 0.3500 | NA | ARROW ELECTRONICS | 1,022 | 7/4/2008 | 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 |
|---|---|---|---|---|---|---|---|
| N74F521D | SOT163-1
(SO20) | 8-Bit Identity Comparator | 8 | 4.5-5.5 V | 20 | TTL | -1/+20 mA |
| N74F521N | SOT146-1
(DIP20) | 8-Bit Identity Comparator | 8 | 4.5-5.5 V | 20 | TTL | -1/+20 mA |
Similar products
74F521 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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