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Texas Instruments SN74CB3T3245DWR — Logic ICs

TI SN74CB3T3245DWR Bus Switch, 8 x 1:1, 2.3V-3.6V, 20-SOIC

MPNSN74CB3T3245DWR
End of Life

Texas Instruments 74CB series Bus Switch, SN74CB3T3245DWR, 8 x 1:1 circuit, 2.3V to 3.6V single supply, -40°C to 85°C, 20-SOIC surface mount package.

$2.15Ref. price · indicative, final on quote
Packaging20-SOIC (0.295", 7.50mm Width)
RoHSROHS3 Compliant
Series74CB
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74CB3T3245DWR specifications
ParameterValue
TypeBus Switch
Series74CB
MountingSurface Mount
Voltage2.3V ~ 3.6V
Voltage supply sourceSingle Supply
Operating temperature-40°C ~ 85°C
Circuit8 x 1:1
PackageTape & Reel (TR); Cut Tape (CT)
Case20-SOIC (0.295\", 7.50mm Width)
Independent circuits1

Product details

Bus switch for voltage-translating signal isolation

This part is designed for hot-insertion and live-board applications where signal isolation and voltage-level translation between different supply domains are needed, such as in telecom line cards, base stations, and industrial backplanes.

Supply voltage and signal compatibility

The single-supply architecture means the switch's pass transistor tracks the supply rail, so a 3.3V VCC yields a low on-state resistance that preserves signal integrity for standard 3.3V CMOS or LVTTL levels. At 2.5V operation, the switch still provides adequate drive for 2.5V logic, making it a clean fit for mixed-voltage boards where a dedicated translator IC would add cost and board area.

Package and footprint for production

For prototype or low-volume builds, the cut-tape option is also available. The surface-mount package suits double-sided PCB layouts common in compact telecom and industrial modules.

Frequently asked questions

What are alternatives to SN74CB3T3245DWR?

A functional alternative within the same 74CB series is the SN74CB3T3384PWR, which offers a 5 x 1:1 circuit configuration in a similar 20-pin package and supply range. The key difference is the channel count: 8 channels on the 3245 versus 5 channels on the 3384.