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

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

 

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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) Power supply type Vdd (Min) (V) Vdd (Max) (V) Rating Operating temperature range (C) Package Group Supply range (Max) Ron (Max) (Ohms) Input/output continuous current (Max) (mA) Supply current (Typ) (uA) Supply current (Max) (uA) Features OFF-state leakage current (Max) (µA) ON-state leakage current (Max) (µA) CON (Typ) (pF) COFF (Typ) (pF) ESD CDM (kV) ESD HBM (kV) VIL (Max) (V) VIH (Min) (V)
SN74CBTLV3257 Order now 2:1 SPDT     4     5     200     Single     2.3     3.6     Catalog     -40 to 85     SOIC | 16
SSOP | 16
TSSOP | 16
TVSOP | 16
UQFN | 16
VQFN | 16    
3.6     40     128       10     Powered-off protection
Supports SPI signals
Supports JTAG signals    
  1       5.5       2     0.8     2    
SN74CB3Q3257 Order now 2:1 SPDT     4     4     500     Single     2.3     3.6     Catalog     -40 to 85     SSOP | 16
TSSOP | 16
TVSOP | 16
VQFN | 16    
3.6     9     64     250     700     Powered-off protection
Supports SPI signals
Supports JTAG signals
Supports input voltage beyond supply    
1       10.5     3.5     1     2     0.8     1.7    
SN74CBT3257 Order now 2:1 SPDT     4     5     200     Single     4     5.5     Catalog     -40 to 85     SOIC | 16
SSOP | 16
SSOP | 16
TSSOP | 16
VQFN | 16    
5.5     20     128       3     Supports SPI signals
Supports JTAG signals    
1     1       4         0.8     2    
SN74CBT3257C Order now 2:1 SPDT     4     3     200     Single     4     5.5     Catalog     -40 to 85     SOIC | 16
SSOP | 16
SSOP | 16
TSSOP | 16
VQFN | 16