SN74LVC8T245 Status: ACTIVE

8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and Three-State Outputs

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Datasheet

SN74LVC8T245 (Rev. A) (PDF 979 KB)
29 Jun 2005

	SN74LVC8T245
Voltage Nodes(V)	5, 3.3, 2.5, 1.8
Vcc range(V)	1.65 to 5.5
Input Level	TTL/CMOS
Output Level	LVTTL
Logic	True
No. of Bits	8
No. of Outputs	8
Output Drive(mA)	-32/32
Static Current	0.025
Technology Family	LVC
Pin/Package	24QFN, 24SO, 24SOIC, 24SSOP, 24SSOP/QSOP, 24TSSOP, 24TVSOP
Operating Temp Range(Celsius)	-40 to 85
Approx. Price (US$)	0.80 \| 1ku
Rating	Catalog
	Samples
	Inventory

Other qualified versions of SN74LVC8T245

Version	Part Number	Definition
Enhanced Product	SN74LVC8T245-EP	Supports Defense, Aerospace and Medical Applications

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SN74LVC14A: Hex Schmitt-Trigger Inverter
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More Related Products

Product Information

Features

Control Inputs V_IH/V_IL Levels Are Referenced to V_CCA Voltage
V_CC Isolation Feature - If Either V_CC Input Is at GND, All Are in the High-Impedance State
Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 4000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74LVC8T245 is optimized to operate with V_CCA and V_CCB set at 1.65 V to 5.5 V. The A port is designed to track V_CCA. V_CCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track V_CCB. V_CCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes.

The SN74LVC8T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess I_CC and I_CCZ.

The SN74LVC8T245 is designed so that the control pins (DIR and OE) are supplied by V_CCA.

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.

The V_CC isolation feature ensures that if either V_CC input is at GND, all outputs are in the high-impedance state.

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)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Footprints	Samples
74LVC8T245DBQRG4	ACTIVE	-40 to 85	0.80 \| 1ku	SSOP/QSOP (DBQ) \| 24	View	2500 \| LARGE T&R
74LVC8T245RHLRG4	ACTIVE	-40 to 85	0.85 \| 1ku	QFN (RHL) \| 24		1000 \| LARGE T&R
SN74LVC8T245DBQR	ACTIVE	-40 to 85	0.80 \| 1ku	SSOP/QSOP (DBQ) \| 24	View	2500 \| LARGE T&R
SN74LVC8T245DBR	ACTIVE	-40 to 85	0.80 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245DBRE4	ACTIVE	-40 to 85	0.80 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245DBRG4	ACTIVE	-40 to 85	0.80 \| 1ku	SSOP (DB) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245DGVR	ACTIVE	-40 to 85	0.80 \| 1ku	TVSOP (DGV) \| 24		2000 \| LARGE T&R
SN74LVC8T245DGVRG4	ACTIVE	-40 to 85	0.80 \| 1ku	TVSOP (DGV) \| 24		2000 \| LARGE T&R
SN74LVC8T245DWR	ACTIVE	-40 to 85	0.80 \| 1ku	SOIC (DW) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245DWRG4	ACTIVE	-40 to 85	0.80 \| 1ku	SOIC (DW) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245NSR	ACTIVE	-40 to 85	0.80 \| 1ku	SO (NS) \| 24	View	2000 \| LARGE T&R	Purchase Samples
SN74LVC8T245NSRG4	ACTIVE	-40 to 85	0.80 \| 1ku	SO (NS) \| 24	View	2000 \| LARGE T&R	Purchase Samples
SN74LVC8T245PW	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
SN74LVC8T245PWE4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
SN74LVC8T245PWG4	ACTIVE	-40 to 85	0.85 \| 1ku	TSSOP (PW) \| 24	View	60 \| TUBE	Purchase Samples
SN74LVC8T245PWR	ACTIVE	-40 to 85	0.80 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245PWRE4	ACTIVE	-40 to 85	0.80 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245PWRG4	ACTIVE	-40 to 85	0.80 \| 1ku	TSSOP (PW) \| 24	View	2000 \| LARGE T&R
SN74LVC8T245RHLR	ACTIVE	-40 to 85	0.85 \| 1ku	QFN (RHL) \| 24		1000 \| LARGE T&R

* 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 10:44 AM GMT, 06 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 15 Weeks74LVC8T245DBQRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 Weeks74LVC8T245RHLRG4
None Reported View Distributors
TI Lead Time*: 15 WeeksSN74LVC8T245DBQR
Americas	Arrow	>1k
	Rochester Electronics	>1k
Asia	WPI	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 15 WeeksSN74LVC8T245DBR
Worldwide	Mouser Electronics	38
TI Lead Time*: 15 WeeksSN74LVC8T245DBRE4
None Reported View Distributors
TI Lead Time*: 15 WeeksSN74LVC8T245DBRG4
None Reported View Distributors
TI Lead Time*: 12 WeeksSN74LVC8T245DGVR
Asia	Farnell Asia	>1k
	WPI	887
Europe	Farnell	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 12 WeeksSN74LVC8T245DGVRG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksSN74LVC8T245DWR
Americas	Arrow	>1k
TI Lead Time*: 15 WeeksSN74LVC8T245DWRG4
None Reported View Distributors
TI Lead Time*: 15 WeeksSN74LVC8T245NSR
None Reported View Distributors
TI Lead Time*: 15 WeeksSN74LVC8T245NSRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC8T245PW
Asia	Farnell Asia	43
TI Lead Time*: 20 WeeksSN74LVC8T245PWE4
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC8T245PWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC8T245PWR
Asia	WPI	522
TI Lead Time*: 20 WeeksSN74LVC8T245PWRE4
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC8T245PWRG4
None Reported View Distributors
TI Lead Time*: 18 WeeksSN74LVC8T245RHLR
Asia	Farnell Asia	70
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
74LVC8T245DBQRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
74LVC8T245RHLRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
SN74LVC8T245DBQR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
SN74LVC8T245DBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245DBRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245DBRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245DGVR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245DGVRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245DWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245DWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245NSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245NSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245PWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245PWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC8T245RHLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	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 SN74LVC8T245

Datasheet

SN74LVC8T245 (Rev. A) (PDF, 979 KB)
29 Jun 2005

Application Notes

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View Application Notes for Dual Supply Translators

User Guides

LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 46781 views
16 Jan 2007
Signal Switch Data Book (Rev. A) (PDF, 18396 KB) 9486 views
14 Nov 2003
LVC and LV Low-Voltage CMOS Logic Data Book (Rev. B) (PDF, 13291 KB) 6695 views
18 Dec 2002

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 88336 views
23 Jul 2009

Solution Guides

Communications Infrastructure Solutions Guide 1Q2008 (Rev. G) (PDF, 1726 KB) 39605 views
11 Feb 2008

More Literature

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07 Oct 2003
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10 Apr 2006
Design Summary for WCSP Little Logic (Rev. B) (PDF, 295 KB) 1804 views
04 Nov 2004
SN74LVC1G97 and SN74LVC1G98 Product Clip (Rev. A) (PDF, 253 KB) 1612 views
13 Jul 2004
Military Low Voltage Solutions (PDF, 103 KB) 765 views
04 Apr 2001
SN74LVC1G3157 and SNS74LVC2G53 SPDT Analog Switches (PDF, 65 KB) 2400 views
12 Jun 2003
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13 Jun 2002
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27 Mar 2002
Low-Voltage Logic (LVC) Designer's Guide (HTM, 8 KB) 2901 views
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View More Literature for Dual Supply Translators

Simulation Models

IBIS Model
- SN74LVC8T245 IBIS Model (Multiple File Format) 403 views
  09 Sep 2005 Read Abstract

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SN74LVC8T245 Status: ACTIVE

8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and Three-State Outputs

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