3.3-V Low-Voltage Quadruple FET Bus Switch With 5-V Tolerant Level ShifterThe 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 | |||
SN74CB3T3125PWRG4 | 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 | |||
SN74CB3T3125PWE4 | Texas Instruments | CB3T/3VT SERIES, QUAD 1-BIT DRIVER, TRUE OUTPUT, PDSO14, GREEN, PLASTIC, TSSOP-14 | |||
SN74CB3T3125PW | 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 | |||
SN74CB3T3125PWRE4 | Texas Instruments | 3.3-V Low-Voltage Quadruple FET Bus Switch with 5-V Tolerant Level Shifter 14-TSSOP -40 to 85 |
|
SN74CB3T3125 Pb-Free | SN74CB3T3125 Cross Reference | SN74CB3T3125 Schematic | SN74CB3T3125 Distributor |
SN74CB3T3125 Application Notes | SN74CB3T3125 RoHS | SN74CB3T3125 Circuits | SN74CB3T3125 footprint |