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74ABT899
Datasheet
General description
The 74ABT899 is a 9-bit to 9-bit parity transceiver with separate transparent latches for the A bus and B bus. Either bus can generate or check parity. The parity bit can be fed-through with no change or the generated parity can be substituted with the SEL input.
Parity error checking of the A and B bus latches is continuously provided with ERRA and ERRB, even with both buses in 3-State.
The 74ABT899 features independent latch enables for the A and B bus latches, a select pin for ODD/EVEN parity, and separate error signal output pins for checking parity.
Features
- Symmetrical (A and B bus functions are identical)
- Selectable generate parity or 'feed-through' parity for A-to-B and B-to-A directions
- Independent transparent latches for A-to-B and B-to-A directions
- Selectable ODD/EVEN parity
- Continuously checks parity of both A bus and B bus latches as ERRA and ERRB
- Ability to simultaneously generate and check parity
- Can simultaneously read/latch A and B bus data
- Output capability: +64 mA/-32mA
- Latch-up protection exceeds 500mA per Jedec JC40.2 Std 17
- ESD protection exceeds 2000 V per MIL STD 883 Method 3015 and 200 V per Machine Model
- Power up 3-State
- Power-up reset
- Live insertion/extraction permitted
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74ABT899A | 74ABT899A | 9350 576 30602 | Volume production | SOT261-2
(PLCC28) | Tube (Signetics) | Standard Marking | 74ABT899A
| week 13, 2005 |
| 74ABT899A | 74ABT899A-T | 9350 576 30623 | Volume production | SOT261-2
(PLCC28) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | 74ABT899A
| week 13, 2005 |
| 74ABT899D | 74ABT899D | 9350 640 30112 | Volume production | SOT136-1
(SO28) | Tube | Standard Marking | 74ABT899D
| week 6, 2005 |
| 74ABT899D | 74ABT899D-T | 9350 640 30118 | Volume production | SOT136-1
(SO28) | Reel Pack, SMD, 13" | Standard Marking | 74ABT899D
| week 6, 2005 |
| 74ABT899DB | 74ABT899DB | 9352 077 10112 | Volume production | SOT341-1
(SSOP28) | Tube | Standard Marking | 74ABT899DB
| week 11, 2005 |
| 74ABT899DB | 74ABT899DB-T | 9352 077 10118 | Volume production | SOT341-1
(SSOP28) | Reel Pack, SMD, 13" | Standard Marking | 74ABT899DB
| week 11, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74ABT899A | 9350 576 30602 | 2.9900 | not available | |||||
| 74ABT899A | 9350 576 30623 | 2.9900 | Order samples | |||||
| 74ABT899D | 9350 640 30112 | 2.9900 | not available | |||||
| 74ABT899D | 9350 640 30118 | 2.9900 | Order samples | |||||
| 74ABT899DB | 9352 077 10112 | 2.9900 | not available | |||||
| 74ABT899DB | 9352 077 10118 | 2.9900 | ASIA | WPG | 5,000 | 08/05/2008 | Buy online | Order samples |
Technical documents
Application Notes
AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)
Support Documents
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| 74ABT899A | SOT261-2
(PLCC28) | Latched Transceiver with Parity Generator/Checker (3-State) | 3.2 | 4.5-5.5 V | 28 | TTL | -32/+64 mA |
| 74ABT899D | SOT136-1
(SO28) | Latched Transceiver with Parity Generator/Checker (3-State) | 3.2 | 4.5-5.5 V | 28 | TTL | -32/+64 mA |
| 74ABT899DB | SOT341-1
(SSOP28) | Latched Transceiver with Parity Generator/Checker (3-State) | 3.2 | 4.5-5.5 V | 28 | TTL | -32/+64 mA |
Similar products
74ABT899 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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