SN74CB3Q3251 1-of-8 FET Multiplexer/Demultiplexer 2.5-V/3.3-V Low-Voltage High-Bandwidth Bus Switch | TI.com

SN74CB3Q3251 (ACTIVE)

1-of-8 FET Multiplexer/Demultiplexer 2.5-V/3.3-V Low-Voltage High-Bandwidth Bus Switch

1-of-8 FET Multiplexer/Demultiplexer 2.5-V/3.3-V Low-Voltage High-Bandwidth Bus Switch - SN74CB3Q3251
Datasheet
 

Description

The SN74CB3Q3251 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q3251 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q3251 is a 1-of-8 multiplexer/demultiplexer with a single output-enable (OE\) input. The select (S0, S1, S2) inputs control 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 circuitry prevents damaging current 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

  • High-Bandwidth Data Path (up to 500 MHz (1))
  • Equivalent to IDTQS3VH251 Device
  • 5-V Tolerant I/Os With Device Powered Up or Powered Down
  • Low and Flat ON-State Resistance (ron) Characteristics Over Operating Range (ron = 4

Parametrics

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Part number Order Configuration Number of channels (#) Power supply type Vdd (Min) (V) Vdd (Max) (V) Ron (Typ) (Ohms) Bandwidth (MHz) 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)
SN74CB3Q3251 Order now 8:1     1     Single     2.3     3.6     3.5     500     Catalog     -40 to 85     SSOP | 16
TSSOP | 16
TVSOP | 16
VQFN | 16    
3.6     11     64     600     2000     Powered-off protection
Supports input voltage beyond supply    
1       15     3.5     1     2     0.8     1.7    
SN74CBT3251 Order now 8:1     1     Single     4     5.5     5     200     Catalog     -40 to 85     SOIC | 16
SSOP | 16
SSOP | 16
TSSOP | 16
VQFN | 16    
5.5     15     128       3       1     1       4     1     1.5     0.8     2    
SN74CBTLV3251 Order now 8:1     1     Single     2.3     3.6     5     200     Catalog     -40 to 85     SOIC | 16
SSOP | 16
TSSOP | 16
TVSOP | 16
VQFN | 16    
3.6     40     128       10     Powered-off protection     1     1       6         0.8     2