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4-channel, 2:1 analog switch with power-off protection


Package | PIN: DGV | 16
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.74
10-24 $0.66
25-99 $0.61
100-249 $0.52
250-499 $0.48
500-749 $0.39
750-999 $0.32
1000+ $0.28


  • 5-Ω Switch Connection Between Two Ports
  • Rail-to-Rail Switching on Data I/O Ports
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-VHuman-Body Model (A114-A)
    • 200-V Machine Model(A115-A)

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Texas Instruments  SN74CBTLV3257DGVR

The SN74CBTLV3257 device is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer. Thelow on-state resistance of the switch allows connections to be made with minimal propagationdelay.

The select (S) input controls the data flow. The FET multiplexers/demultiplexers aredisabled when the output-enable (OE) input is high.

This device is fully specified for partial-power-down applications usingIoff. The Ioff feature ensures that damaging currentwill not backflow through the device when it is powered down. The device has isolation during poweroff.

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 thedriver.