SN54LVC646A Status: ACTIVE

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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Datasheet

SN54LVC646A, SN74LVC646A (Rev. J) (PDF 553 KB)
31 Jul 2003

	SN54LVC646A	SN74LVC646A
Voltage Nodes(V)	3.3, 2.7, 2.5, 1.8	3.3, 2.7, 2.5, 1.8
Vcc range(V)	2.0 to 3.6	2.0 to 3.6
Output Level	LVTTL	LVTTL
Output Drive(mA)	-24/24
No. of Outputs	8	8
No. of Bits	8
Static Current	0.01	0.01
th(ns)	1.7	TTL/CMOS
tpd max(ns)	7.4
tsu(ns)	1.5
Technology Family	LVC	LVC
Rating	Military	Catalog
	Samples	Samples
	Inventory	Inventory

Other qualified versions of SN54LVC646A

Version	Part Number	Definition
Catalog	SN74LVC646A	TI's standard catalog product
Space	SN54LVC646A-SP	Radiation tolerant, ceramic packaging and qualified for use in Space-based application

Customers Who Evaluated This Product Also Evaluated

SN54LVC541A: OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

SN54LVC74A: DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET

SN54LVTH16501: 3.3-V ABT 18-BIT UNIVERSAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

Product Information

Features

Operate 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 V 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)

Description

The SN54LVC646A octal bus transceiver and register is designed for 2.7-V to 3.6-V V_CC operation, and the SN74LVC646A octal bus transceiver and register is designed for 1.65-V to 3.6-V V_CC operation.

These devices consist 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 illustrates the four fundamental bus-management functions that are performed with the ’LVC646A devices.

Output-enable (OE)\ and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at thehigh-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 is still 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 these devices as translators in a mixed 3.3-V/5-V system environment.

These devices are 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		CAD Design Tools	Samples
Device	Status	Temp (^oC)	DSCC #	Price \| Quantity	Package \| Pins	Package QTY \| Package Carrier	Footprints	Samples
5962-9762601Q3A	ACTIVE	-55 to 125		17.52 \| 1ku	LCCC (FK) \| 28	1 \| TUBE	Purchase Samples
5962-9762601QKA	ACTIVE	-55 to 125		18.59 \| 1ku	CFP (W) \| 24	1 \| TUBE		Purchase Samples
5962-9762601QLA	ACTIVE	-55 to 125		13.06 \| 1ku	CDIP (JT) \| 24	1 \| TUBE	Purchase Samples
SNJ54LVC646AFK	ACTIVE	-55 to 125	5962-9762601Q3A	17.52 \| 1ku	LCCC (FK) \| 28	1 \| TUBE	Contact TI Distributor or Sales Office
SNJ54LVC646AJT	ACTIVE	-55 to 125	5962-9762601QLA	13.06 \| 1ku	CDIP (JT) \| 24	1 \| TUBE	Contact TI Distributor or Sales Office
SNJ54LVC646AW	ACTIVE	-55 to 125	5962-9762601QKA	18.59 \| 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

Reported Distributor Inventory as of 11:16 AM GMT, 08 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 6 Weeks5962-9762601Q3A
None Reported View Distributors
TI Lead Time*: 6 Weeks5962-9762601QKA
Americas	Rochester Electronics	333
TI Lead Time*: 6 Weeks5962-9762601QLA
None Reported View Distributors
TI Lead Time*: 6 WeeksSNJ54LVC646AFK
None Reported View Distributors
TI Lead Time*: 6 WeeksSNJ54LVC646AJT
None Reported View Distributors
TI Lead Time*: 6 WeeksSNJ54LVC646AW
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
5962-9762601Q3A	TBD	POST-PLATE	N/A for Pkg Type	View	View
5962-9762601QKA	TBD	A42	N/A for Pkg Type	View	View
5962-9762601QLA	TBD	A42	N/A for Pkg Type	View	View
SNJ54LVC646AFK	TBD	POST-PLATE	N/A for Pkg Type	View	View
SNJ54LVC646AJT	TBD	A42	N/A for Pkg Type	View	View
SNJ54LVC646AW	TBD	A42	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.

Technical Documents

Most useful technical documents for SN54LVC646A

Datasheet

SN54LVC646A, SN74LVC646A (Rev. J) (PDF, 553 KB)
31 Jul 2003

Application Notes

Input and Output Characteristics of Digital Integrated Circuits (HTM, 9 KB) 9160 views
01 Oct 1996 Read Abstract
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06 Nov 2003 Read Abstract
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24 May 2004 Read Abstract
Selecting the Right Level Translation Solution (Rev. A) (HTM, 8 KB) 15418 views
22 Jun 2004 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21380 views
28 May 2003 Read Abstract
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01 Nov 2002 Read Abstract
16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) (HTM, 8 KB) 1104 views
22 May 2002 Read Abstract
Implications of Slow or Floating CMOS Inputs (Rev. C) (HTM, 8 KB) 7013 views
01 Feb 1998 Read Abstract
Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices (HTM, 9 KB) 633 views
01 Dec 1997 Read Abstract
Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) (HTM, 8 KB) 2402 views
01 Aug 1997 Read Abstract
CMOS Power Consumption and CPD Calculation (Rev. B) (HTM, 9 KB) 3135 views
01 Jun 1997 Read Abstract
LVC Characterization Information (HTM, 8 KB) 2368 views
01 Dec 1996 Read Abstract
Understanding Advanced Bus-Interface Products Design Guide (PDF, 253 KB) 4075 views
01 May 1996

View Application Notes for Registered Transceivers

User Guides

LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 46833 views
16 Jan 2007
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14 Nov 2003
LVC and LV Low-Voltage CMOS Logic Data Book (Rev. B) (PDF, 13291 KB) 6706 views
18 Dec 2002

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 88618 views
23 Jul 2009

Solution Guides

Communications Infrastructure Solutions Guide 1Q2008 (Rev. G) (PDF, 1726 KB) 39743 views
11 Feb 2008

More Literature

Logic Cross-Reference (Rev. A) (PDF, 2938 KB) 15250 views
07 Oct 2003
Dual-Supply Level Translation Product Clip (Rev. B) (PDF, 328 KB) 2431 views
10 Apr 2006
Design Summary for WCSP Little Logic (Rev. B) (PDF, 295 KB) 1806 views
04 Nov 2004
SN74LVC1G97 and SN74LVC1G98 Product Clip (Rev. A) (PDF, 253 KB) 1620 views
13 Jul 2004
Military Low Voltage Solutions (PDF, 103 KB) 768 views
04 Apr 2001
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12 Jun 2003
Standard Linear & Logic for PCs, Servers & Motherboards (PDF, 3997 KB) 1210 views
13 Jun 2002
STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS (PDF, 5872 KB) 480 views
27 Mar 2002
Low-Voltage Logic (LVC) Designer's Guide (HTM, 8 KB) 2902 views
01 Sep 1996 Read Abstract

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SN54LVC646A Status: ACTIVE

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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Datasheet

Other qualified versions of SN54LVC646A

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

Description

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 Status: ACTIVE

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

Most Popular Links

Datasheet

Other qualified versions of SN54LVC646A

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

Description

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