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74ABT646A
Datasheet
(Product Specification)
17-Feb-98, 14 pages, 129 kB
General description
The 74ABT646A high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive.
The 74ABT646A transceiver/register consists of bus transceiver circuits with 3-State outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes High. Output Enable (OE) and DIR pins are provided to control the transceiver function. In the transceiver mode, data present at the high impedance port may be stored in either the A or B register or both.
The Select (SAB, SBA) pins determine whether data is stored or transferred through the device in real-time. The DIR determines which bus will receive data when the OE is active (Low). In the isolation mode (OE = High), data from Bus A may be stored in the B register and/or data from Bus B may be stored in the A register. When an output function is disabled, the input function is still enabled and may be used to store and transmit data. Only one of the two buses, A or B, may be driven at a time. The examples on the next page demonstrate the four fundamental bus management functions that can be performed with the 74ABT646A.
Features
- Combines 74ABT245 and 74ABT374 type functions in one device
- Independent registers for A and B buses
- Live insertion/extraction permitted
- Power-up 3-State
- Power-up reset
- Multiplexed real-time and stored data
- Output capability: +64mA/-32mA
- Latch-up protection exceeds 500mA per Jedec Std 17
- ESD protection exceeds 2000 V per MIL STD 883 Method 3015 and 200 V per Machine Model
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| 74ABT646AD | 74ABT646AD,112 | 9351 926 30112 | Volume production | SOT137 | Tube | Standard Marking | |
| 74ABT646AD | 74ABT646AD,118 | 9351 926 30118 | Volume production | SOT137 | Reel Pack, SMD, 13" | Standard Marking | |
| 74ABT646ADB | 74ABT646ADB,112 | 9351 926 40112 | Volume production | SOT340-1
(SSOP24) | Tube | Standard Marking | |
| 74ABT646ADB | 74ABT646ADB,118 | 9351 926 40118 | Volume production | SOT340-1
(SSOP24) | Reel Pack, SMD, 13" | Standard Marking | |
| 74ABT646APW | 74ABT646APW,112 | 9351 926 60112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | |
| 74ABT646APW | 74ABT646APW,118 | 9351 926 60118 | Volume production | SOT355-1
(TSSOP24) | 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 |
|---|---|---|---|---|---|---|---|---|
| 74ABT646AD | 74ABT646AD,112 | 74ABT646AD |
| week 13, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT646AD | 74ABT646AD,118 | 74ABT646AD |
| week 13, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT646ADB | 74ABT646ADB,112 | 74ABT646ADB |
| week 12, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT646ADB | 74ABT646ADB,118 | 74ABT646ADB |
| week 12, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT646APW | 74ABT646APW,112 | 74ABT646APW |
| week 10, 2005 | 1,33 | 7,52E+08 | 1 | |
| 74ABT646APW | 74ABT646APW,118 | 74ABT646APW |
| week 10, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 74ABT646AD | 9351 926 30112 | 74ABT646AD,112 | 1.2600 | not available | ||||||
| 74ABT646AD | 9351 926 30118 | 74ABT646AD,118 | 1.2600 | not available | ||||||
| 74ABT646ADB | 9351 926 40112 | 74ABT646ADB,112 | 1.2600 | not available | ||||||
| 74ABT646ADB | 9351 926 40118 | 74ABT646ADB,118 | 1.2600 | not available | ||||||
| 74ABT646APW | 9351 926 60112 | 74ABT646APW,112 | 1.2600 | not available | ||||||
| 74ABT646APW | 9351 926 60118 | 74ABT646APW,118 | 1.2600 | not available |
Applications
- Desktop/Notebook (PCMCIA) video
- Multimedia
- Digital television
- Image processing
- Video phone
- Intercast.
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 | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| 74ABT646AD | SOT137
| Transceiver/Register (3-State) | 350 | 4.4 | 4.5-5.5 V | 24 | TTL | -32/+64 mA |
| 74ABT646ADB | SOT340-1
(SSOP24) | Transceiver/Register (3-State) | 350 | 4.4 | 4.5-5.5 V | 24 | TTL | -32/+64 mA |
| 74ABT646APW | SOT355-1
(TSSOP24) | Transceiver/Register (3-State) | 350 | 4.4 | 4.5-5.5 V | 24 | TTL | -32/+64 mA |
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