SN74CBTLV3257 4-channel, 2:1 analog switch with power-off protection | TI.com

SN74CBTLV3257
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4-channel, 2:1 analog switch with power-off protection

 

Recommended alternative parts

  • TMUX1574  -  2-Ω RON, 1.5-GHz analog switch with 1.8-V compatible control logic

Description

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

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

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.

Features

  • 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-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

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Parametrics

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Part number Order Configuration Number of channels (#) Ron (Typ) (Ohms) Bandwidth (MHz) Rating Operating temperature range (C) Package Group Input/output continuous current (Max) (mA) Supply current (Typ) (uA) Features ON-state leakage current (Max) (µA) CON (Typ) (pF)
SN74CBTLV3257 Order now 2:1 SPDT     4     5     200     Catalog     -40 to 85     SOIC | 16
SSOP | 16
TSSOP | 16
TVSOP | 16
UQFN | 16
VQFN | 16    
128       Powered-off protection
Supports JTAG signals
Supports SPI signals    
1      
SN3257-Q1 Order now 2:1 SPDT     4     2     900     Automotive     -40 to 125     SOT-23-THN | 16
TSSOP | 16    
25     7.5     1.8-V compatible control inputs
Break-before-make
Fail-safe logic
Integrated pulldown resistor on logic pin
Powered-off protection
Supports SPI signals
Supports input voltage beyond supply    
0.9     8    
SN74CB3Q3257 Order now 2:1 SPDT     4     4     500     Catalog     -40 to 85     SSOP | 16
TSSOP | 16
TVSOP | 16
VQFN | 16    
64     250     Powered-off protection
Supports JTAG signals
Supports SPI signals
Supports input voltage beyond supply    
  10.5    
SN74CBT3257 Order now 2:1 SPDT     4     5     200     Catalog     -40 to 85     SOIC | 16
SSOP | 16
SSOP | 16
TSSOP | 16
VQFN | 16    
128       Supports JTAG signals
Supports SPI signals    
1      
SN74CBT3257C Order now 2:1 SPDT     4     3     200     Catalog     -40 to 85     SOIC | 16
SSOP | 16
SSOP | 16
TSSOP | 16
VQFN | 16    
128       Powered-off protection
Supports JTAG signals
Supports SPI signals
Undershoot protection    
  16.5    
TMUX1574 Order now 2:1 SPDT     4     2     2000     Catalog     -40 to 125     SOT-23-THN | 16
TSSOP | 16
UQFN | 16    
25     40     1.8-V compatible control inputs
Fail-safe logic
Integrated pulldown resistor on logic pin
Powered-off protection
Supports JTAG signals
Supports SPI signals
Supports input voltage beyond supply    
0.05     7.5    
TS3A27518E-Q1 Order now 2:1 SPDT