4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER

The SN74CB3T3257 is a high-speed TTL-compatible FET multiplexer/demultiplexer 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 SN74CB3T3257 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 SN74CB3T3257 is a 4-bit 1-of-2 multiplexer/demultiplexer with a single output-enable (OE) input. The select (S) input controls the data path of the multiplexer/demultiplexer. When OE is low, the multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the multiplexer/demultiplexer is disabled, and a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off. 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 determined by the current-sinking capability of the driver.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN74CB3T3257PWG4 Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TSSOP -40 to 85
SN74CB3T3257PWRE4 Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TSSOP -40 to 85
SN74CB3T3257DGVR Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TVSOP -40 to 85
SN74CB3T3257PWRG4 Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TSSOP -40 to 85
SN74CB3T3257PWE4 Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TSSOP -40 to 85
SN74CB3T3257PWR Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TSSOP -40 to 85
SN74CB3T3257PW Texas Instruments 4-BIT 1-OF-2 FET MULT/DEMULT 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V TOLERANT LEVEL SHIFTER 16-TSSOP -40 to 85
SN74CB3T3257 's PackagesSN74CB3T3257 's pdf datasheet
74CB3T3257DGVRE4 TVSOP
74CB3T3257DGVRG4 TVSOP
SN74CB3T3257DGVR TVSOP
SN74CB3T3257PW TSSOP
SN74CB3T3257PWE4 TSSOP
SN74CB3T3257PWG4 TSSOP
SN74CB3T3257PWR TSSOP
SN74CB3T3257PWRE4 TSSOP
SN74CB3T3257PWRG4 TSSOP

SN74CB3T3257 pdf datasheet download


SN74CB3T3257 Pinout, Pinouts
SN74CB3T3257 pinout,Pin out
This is one package pinout of SN74CB3T3257,If you need more pinouts please download SN74CB3T3257's pdf datasheet.

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