3.3-V Low-Voltage Quadruple FET Bus Switch With 5-V Tolerant Level Shifter

The SN74CB3T3125 is a high-speed TTL-compatible FET bus Switch with low ON-state resistance (ron), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks VCC. The SN74CB3T3125 supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1). The SN74CB3T3125 is organized as four 1-bit Bus Switches with separate output-enable (1OE, 2OE, 3OE, 4OE) inputs. It CAN be used as four 1-bit Bus Switches or as one 4-bit bus Switch When OE is low, the associated 1-bit bus Switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 1-bit bus Switch is OFF, and the high-impedance state exists between the A and B ports.
This device is fully specified for partial-power-down applications using Ioff. The Ioff 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 VCC through a pullup resistor; the minimum value of the resistor is determ c7d ined by the current-sinking capability of the driver.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN74CB3T3125PWG4 Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85
SN74CB3T3125PWRE4 Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85
SN74CB3T3125PWR Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85
SN74CB3T3125PW Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85
SN74CB3T3125PWRG4 Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85
SN74CB3T3125PWE4 Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85
SN74CB3T3125RGYR Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-VQFN -40 to 85
SN74CB3T3125DGVR Texas Instruments 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TVSOP -40 to 85
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SN74CB3T3125 pdf datasheet download


SN74CB3T3125 Pinout, Pinouts
SN74CB3T3125 pinout,Pin out
This is one package pinout of SN74CB3T3125,If you need more pinouts please download SN74CB3T3125's pdf datasheet.

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