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Texas Instruments SN74LVC8T245DBQR — Logic ICs

SN74LVC8T245DBQR Translation Transceiver, 24-SSOP

MPNSN74LVC8T245DBQR
End of Life

Texas Instruments 74LVC series SN74LVC8T245DBQR, Translation Transceiver, 3-State, 2-Element, 8-Bit per Element, 1.65V to 5.5V Supply, 24-SSOP, -40°C to 85°C.

$1.64Ref. price · indicative, final on quote
Texas Instruments SN74LVC8T245DBQR datasheet (PDF)
Packaging24-SSOP (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Series74LVC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74LVC8T245DBQR specifications
ParameterValue
Series74LVC
Logic typeTranslation Transceiver
Output type3-State
MountingSurface Mount
Supply voltage1.65V ~ 5.5V
Current - output high, low32mA, 32mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case24-SSOP (0.154\", 3.90mm Width)
Number of elements2
Number of bits per element8

Product details

The Texas Instruments SN74LVC8T245DBQR is a dual-supply 8-bit translation transceiver from the 74LVC logic family. It provides bidirectional voltage-level translation between two independent supply rails, each operating from 1.65V up to 5.5V. The part integrates two 8-bit elements with 3-state outputs, each capable of sinking or sourcing 32mA. Typical applications include mixed-voltage system interfaces, memory-bus translation, and general-purpose level shifting in telecom, industrial control, and computing equipment where 3.3V and 1.8V or 5V domains must communicate.

Supply range and level translation — the key decision driver

It allows direct translation between any two standard logic voltages within that window — for example, 1.8V to 3.3V, 2.5V to 5V, or 3.3V to 1.8V. The direction control pins (DIR) per element set the data flow, and the output-enable (OE) pin puts all outputs into high-impedance state for bus isolation.

Package and footprint — 24-SSOP narrow-body

The narrow-body width saves lateral board space compared to a 24-SOIC wide-body (7.5mm) or 24-TSSOP (4.4mm) alternative.

It is ROHS3 compliant. For production BOM lines, this part presents no imminent obsolescence risk.

Frequently asked questions

Is SN74LVC8T245DBQR equivalent to SN74LVC245?

No, they are not pin-compatible equivalents. The SN74LVC8T245 is a dual-supply translation transceiver with separate VCCA and VCCB rails for level shifting between different voltage domains. The SN74LVC245 is a single-supply octal bus transceiver without voltage translation capability. The 8T245 handles bidirectional level translation; the 245 does not.

Does SN74LVC8T245DBQR require external components for level translation?

No external pull-up resistors or additional level-shifter ICs are required for typical bidirectional or unidirectional data translation. The part integrates the direction control and output-enable logic. Only decoupling capacitors on each supply rail (VCCA and VCCB) are recommended per standard high-speed logic layout practice.

What is the lifecycle status of SN74LVC8T245DBQR?

The part is ROHS3 compliant. There is no reported end-of-life or last-time-buy schedule.

Can SN74LVC8T245 be used for I2C level shifting?

The SN74LVC8T245 is a standard CMOS translation transceiver with 3-state outputs. I2C requires open-drain outputs with pull-up resistors for bus arbitration. This part's push-pull outputs will conflict with the I2C bus architecture. For I2C level shifting, use a dedicated open-drain translator such as the TXS0108E or PCA9306.