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74ABT648
Datasheet
General description
The 74ABT648 high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive.
The 74ABT648 transceiver/register consists of bus transceiver circuits with inverting 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 direction (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. Outputs from real time or stored registers will be inverted. 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.
Features
- Combines 74ABT245 and 74ABT374A type functions in one device
- Independent registers for A and B buses
- Multiplexed real time and stored data
- 3-state buffers
- Live insertion and extraction permitted
- Output capability: +64 mA and -32 mA
- Power-up 3-state
- Power-up reset
- Latch-up protection:
- JESD78: exceeds 500 mA
- ESD protection:
- MIL STD 883 method 3015: exceeds 2000 V
- Machine model: exceeds 200 V
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74ABT648D | 74ABT648D | 9350 479 40602 | Volume production | SOT137-1
(SO24) | Tube (Signetics) | Standard Marking | 74ABT648D
| week 13, 2005 |
| 74ABT648D | 74ABT648D-T | 9350 479 40623 | Volume production | SOT137-1
(SO24) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | 74ABT648D
| week 13, 2005 |
| 74ABT648PW | 74ABT648PW | 9351 788 70112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | 74ABT648PW
| week 10, 2005 |
| 74ABT648PW | 74ABT648PW-T | 9351 788 70118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74ABT648PW
| week 10, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74ABT648D | 9350 479 40602 | 2.9000 | NA | DIGI-KEY CORPORATION | 1,200 | 6/29/2008 | Buy online | not available |
| 74ABT648D | 9350 479 40623 | 2.9000 | Order samples | |||||
| 74ABT648PW | 9351 788 70112 | 2.9000 | NA | DIGI-KEY CORPORATION | 1,575 | 6/29/2008 | Buy online | not available |
| 74ABT648PW | 9351 788 70118 | 2.9000 | 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 | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| 74ABT648D | SOT137-1
(SO24) | Octal Transceiver/Register; Inverting (3-State) | 200 | 5.9 | 4.5-5.5 V | 24 | TTL | -32/+64 mA |
| 74ABT648PW | SOT355-1
(TSSOP24) | Octal Transceiver/Register; Inverting (3-State) | 200 | 5.9 | 4.5-5.5 V | 24 | TTL | -32/+64 mA |
Similar products
74ABT648 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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