SN74LVC646A Status: ACTIVE

Octal Bus Transceiver And Register 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 SN74LVC646A

Version	Part Number	Definition
Military	SN54LVC646A	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

SN74LVC16T245: 16-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and Three-State Outputs

SN74LVC4245A: Octal Bus Transceiver And 3.3-V To 5-V Shifter With 3-State Outputs

SN74LVC573A: Octal Transparent D-Type Latches 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.

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Footprints	Samples
SN74LVC646ADBLE	OBSOLETE	-40 to 85		SSOP (DB) \| 24	View		Not Available
SN74LVC646ADBR	ACTIVE	-40 to 85	0.92 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
SN74LVC646ADBRE4	ACTIVE	-40 to 85	0.92 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
SN74LVC646ADBRG4	ACTIVE	-40 to 85	0.92 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
SN74LVC646ADW	ACTIVE	-40 to 85	1.01 \| 1ku	SOIC (DW) \| 24	View	25 \| TUBE	Contact TI Distributor or Sales Office
SN74LVC646ADWE4	ACTIVE	-40 to 85	1.01 \| 1ku	SOIC (DW) \| 24	View	25 \| TUBE	Contact TI Distributor or Sales Office
SN74LVC646ADWG4	ACTIVE	-40 to 85	1.01 \| 1ku	SOIC (DW) \| 24	View	25 \| TUBE	Contact TI Distributor or Sales Office
SN74LVC646ANSR	ACTIVE	-40 to 85	0.92 \| 1ku	SO (NS) \| 24	View	2000 \| LARGE T&R	Purchase Samples
SN74LVC646ANSRE4	ACTIVE	-40 to 85	0.92 \| 1ku	SO (NS) \| 24	View	2000 \| LARGE T&R	Purchase Samples
SN74LVC646ANSRG4	ACTIVE	-40 to 85	0.92 \| 1ku	SO (NS) \| 24	View	2000 \| LARGE T&R	Purchase Samples
SN74LVC646APW	ACTIVE	-40 to 85	1.01 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
SN74LVC646APWE4	ACTIVE	-40 to 85	1.01 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
SN74LVC646APWG4	ACTIVE	-40 to 85	1.01 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
SN74LVC646APWLE	OBSOLETE	-40 to 85		TSSOP (PW) \| 24	View		Not Available
SN74LVC646APWR	ACTIVE	-40 to 85	0.92 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
SN74LVC646APWRE4	ACTIVE	-40 to 85	0.92 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
SN74LVC646APWRG4	ACTIVE	-40 to 85	0.92 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
SN74LVC646APWT	ACTIVE	-40 to 85	0.74 \| 1ku	TSSOP (PW) \| 24	View	250 \| SMALL T&R	Purchase Samples
SN74LVC646APWTE4	ACTIVE	-40 to 85	0.74 \| 1ku	TSSOP (PW) \| 24	View	250 \| SMALL T&R	Purchase Samples
SN74LVC646APWTG4	ACTIVE	-40 to 85	0.74 \| 1ku	TSSOP (PW) \| 24	View	250 \| SMALL T&R	Purchase Samples

* 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 10:54 AM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 15 WeeksSN74LVC646ADBR
Worldwide	DigiKey	972
TI Lead Time*: 15 WeeksSN74LVC646ADBRE4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksSN74LVC646ADBRG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksSN74LVC646ADW
Americas	Avnet	292
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	107
Worldwide	Mouser Electronics	97
TI Lead Time*: 15 WeeksSN74LVC646ADWE4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksSN74LVC646ADWG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksSN74LVC646ANSR
Americas	Rochester Electronics	>1k
TI Lead Time*: 15 WeeksSN74LVC646ANSRE4
None Reported View Distributors
TI Lead Time*: 15 WeeksSN74LVC646ANSRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC646APW
Americas	Arrow	45
Americas	Rochester Electronics	982
Asia	Farnell Asia	59
Europe	Avnet-SILICA	300
Europe	Farnell	59
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksSN74LVC646APWE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksSN74LVC646APWG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksSN74LVC646APWR
Worldwide	DigiKey	44
Worldwide	Mouser Electronics	442
TI Lead Time*: 20 WeeksSN74LVC646APWRE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksSN74LVC646APWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksSN74LVC646APWT
Americas	Rochester Electronics	1k
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksSN74LVC646APWTE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksSN74LVC646APWTG4
Worldwide	DigiKey	Available
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
SN74LVC646ADBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ADBRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ADBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ADW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ADWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ADWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ANSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ANSRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646ANSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWTE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC646APWTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	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 SN74LVC646A

Datasheet

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

Application Notes

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View Application Notes for Registered Transceivers

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LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 47290 views
16 Jan 2007
Signal Switch Data Book (Rev. A) (PDF, 18396 KB) 9634 views
14 Nov 2003
LVC and LV Low-Voltage CMOS Logic Data Book (Rev. B) (PDF, 13291 KB) 6776 views
18 Dec 2002

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Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 90505 views
23 Jul 2009

Solution Guides

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More Literature

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10 Apr 2006
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04 Nov 2004
SN74LVC1G97 and SN74LVC1G98 Product Clip (Rev. A) (PDF, 253 KB) 1632 views
13 Jul 2004
Military Low Voltage Solutions (PDF, 103 KB) 774 views
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Simulation Models

IBIS Model
- SN74LVC646A IBIS Model (Rev. A) (Multiple File Format) 167 views
  01 Nov 2000 Read Abstract

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SN74LVC646A Status: ACTIVE

Octal Bus Transceiver And Register With 3-State Outputs

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