SN54LVC646A-SP Status: ACTIVE

Rad-Tolerant Class V, Octal Bus Transceiver and Register With 3-State Outputs

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Datasheet

Rad-Tolerant Class V Octal Bus Transceiver and Register With 3-State Outputs (PDF 155 KB) 24 views
13 Oct 2008

	SN54LVC646A-SP
Voltage Nodes(V)	3.3,2.7,2.5,1.8
Vcc range(V)	2.0 to 3.6
Input Level	0.0 to 5.5
Output Level	LVTTL
Output Drive(mA)	24
No. of Outputs	8
No. of Bits	8
Static Current	0.01
tpd max(ns)	7.4
Technology Family	LVC
Rating	Space
	Samples
	Inventory

Other qualified versions of SN54LVC646A-SP

Version	Part Number	Definition
Catalog	SN54LVC646A	TI's standard catalog product

Customers Who Evaluated This Product Also Evaluated

SN54LVC646A: OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

Product Information

Features

Operates From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max t_pd of 7.4 ns at 3.3 V
Typical V_OLP (Output Ground Bounce)
<0.8 at V_CC = 3.3 V, T_A = 25°C
Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
Supports Mixed-Mode Signal Operation on All Ports
(5-V Input/Output Voltage With 3.3-V V_CC)
I_off Supports Partial Power-Down-Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
Rad Tolerant: 50kRad (Si) TID⁽¹⁾
- TID Dose Rate 0.10 rad/s
QML-V Qualified, SMD 5962-97626

⁽¹⁾Radiation tolerance is a typical value based upon initial device qualification. Radiation Lot Acceptance Testing is available – contact factory for details.

DESCRIPTION/ORDERING INFORMATION

The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V V_CC operation.

This device consists of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 shows the four fundamental bus-management functions that are performed with the SN54LVC646A device.

Output-enable (OE) and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at the high-impedance port is stored in either register or in both.

The select-control (SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data. DIR determines which bus receives data when OE is low. In the isolation mode (OE high), A data is stored in one register and B data can be stored in the other register.

When an output function is disabled, the input function still is enabled and can be used to store and transmit data. Only one of the two buses, A or B, can be driven at a time.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Package QTY \| Package Carrier	Samples
5962-9762601VKA	ACTIVE	-55 to 125	185.90 \| 1ku	CFP (W) \| 24	1 \| TUBE	Contact TI Distributor or Sales Office

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status	Reported Distributor Inventory
5962-9762601VKA	As of 10:34 AM GMT, 03 Jul 2009	As of 10:34 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	20 Weeks	None Reported View Distributors
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
5962-9762601VKA	TBD	A42 SNPB	N/A for Pkg Type	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

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Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
SN54LVC646A	OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS		TI customers also evaluated this product.

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SN54LVC646A-SP Status: ACTIVE

Rad-Tolerant Class V, Octal Bus Transceiver and Register With 3-State Outputs

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Datasheet

Other qualified versions of SN54LVC646A-SP

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

DESCRIPTION/ORDERING INFORMATION

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

Technical Documents

Datasheet

Application Notes

User Guides

Selection Guides

Solution Guides

More Literature

Support and Community

Customer Tags

Other Support

SN54LVC646A-SP Status: ACTIVE

Rad-Tolerant Class V, Octal Bus Transceiver and Register With 3-State Outputs

Most Popular Links

Datasheet

Other qualified versions of SN54LVC646A-SP

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

DESCRIPTION/ORDERING INFORMATION

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

Technical Documents

Datasheet

Application Notes

User Guides

Selection Guides

Solution Guides

More Literature

Related Products

Support and Community

Customer Tags

Other Support