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74ABT899
Datasheet
(Product Specification)
16-Jan-98, 16 pages, 134 kB
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 | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| 74ABT899A | 74ABT899A,602 | 9350 576 30602 | Volume production | SOT261-2
(PLCC28) | Tube (Signetics) | Standard Marking | |
| 74ABT899A | 74ABT899A,623 | 9350 576 30623 | Volume production | SOT261-2
(PLCC28) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | |
| 74ABT899D | 74ABT899D,112 | 9350 640 30112 | Volume production | SOT136 | Tube | Standard Marking | |
| 74ABT899D | 74ABT899D,118 | 9350 640 30118 | Volume production | SOT136 | Reel Pack, SMD, 13" | Standard Marking | |
| 74ABT899DB | 74ABT899DB,112 | 9352 077 10112 | Volume production | SOT341-1
(SSOP28) | Tube | Standard Marking | |
| 74ABT899DB | 74ABT899DB,118 | 9352 077 10118 | Volume production | SOT341-1
(SSOP28) | Reel Pack, SMD, 13" | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| 74ABT899A | 74ABT899A,602 | 74ABT899A |
| week 13, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT899A | 74ABT899A,623 | 74ABT899A |
| week 13, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT899D | 74ABT899D,112 | 74ABT899D |
| week 6, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT899D | 74ABT899D,118 | 74ABT899D |
| week 6, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT899DB | 74ABT899DB,112 | 74ABT899DB |
| week 11, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT899DB | 74ABT899DB,118 | 74ABT899DB |
| week 11, 2005 | 1,33 | 7,52E+08 | 1 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| 74ABT899A | 9350 576 30602 | 74ABT899A,602 | 2.9900 | not available | ||||||
| 74ABT899A | 9350 576 30623 | 74ABT899A,623 | 2.9900 | not available | ||||||
| 74ABT899D | 9350 640 30112 | 74ABT899D,112 | 2.9900 | not available | ||||||
| 74ABT899D | 9350 640 30118 | 74ABT899D,118 | 2.9900 | not available | ||||||
| 74ABT899DB | 9352 077 10112 | 74ABT899DB,112 | 2.9900 | not available | ||||||
| 74ABT899DB | 9352 077 10118 | 74ABT899DB,118 | 2.9900 | ASIA | WPI | 5,000 | 1000 | 11/19/2009 | Buy online | not available |
Design support
Application Notes
AN203;
Test Fixtures for High Speed Logic (1998-04-02)
Support Documents
ABT_FUNCSELGD;
Functional selection guide ABT family (2004-08-13)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
| 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 |
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